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/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-133090d [2018-10-04 09:43:59,832 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 09:43:59,836 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 09:43:59,848 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 09:43:59,849 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 09:43:59,850 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 09:43:59,851 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 09:43:59,853 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 09:43:59,854 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 09:43:59,857 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 09:43:59,857 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 09:43:59,858 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 09:43:59,859 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 09:43:59,860 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 09:43:59,864 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 09:43:59,865 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 09:43:59,866 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 09:43:59,870 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 09:43:59,878 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 09:43:59,882 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 09:43:59,884 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 09:43:59,887 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 09:43:59,889 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-04 09:43:59,897 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 [2018-10-04 09:43:59,923 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 09:43:59,923 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 09:43:59,924 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 09:43:59,924 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 09:43:59,928 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 09:43:59,928 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 09:43:59,928 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 09:43:59,928 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 09:43:59,929 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 09:43:59,929 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 09:43:59,929 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 09:43:59,929 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 09:43:59,929 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 09:43:59,930 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 09:43:59,931 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 09:43:59,931 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 09:43:59,931 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 09:43:59,931 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 09:43:59,931 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 09:43:59,932 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 09:43:59,932 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 09:43:59,932 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 09:43:59,932 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:43:59,932 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 09:43:59,933 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 09:43:59,934 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 09:43:59,934 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 09:43:59,934 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 09:43:59,934 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 09:43:59,935 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 09:43:59,935 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 09:43:59,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 09:43:59,993 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 09:44:00,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 09:44:00,002 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 09:44:00,003 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 09:44:00,004 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl [2018-10-04 09:44:00,004 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl' [2018-10-04 09:44:00,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 09:44:00,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 09:44:00,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 09:44:00,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 09:44:00,070 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 09:44:00,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:44:00" (1/1) ... [2018-10-04 09:44:00,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:44:00" (1/1) ... [2018-10-04 09:44:00,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 09:44:00,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 09:44:00,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 09:44:00,113 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 09:44:00,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:44:00" (1/1) ... [2018-10-04 09:44:00,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:44:00" (1/1) ... [2018-10-04 09:44:00,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:44:00" (1/1) ... [2018-10-04 09:44:00,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:44:00" (1/1) ... [2018-10-04 09:44:00,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:44:00" (1/1) ... [2018-10-04 09:44:00,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:44:00" (1/1) ... [2018-10-04 09:44:00,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:44:00" (1/1) ... [2018-10-04 09:44:00,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 09:44:00,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 09:44:00,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 09:44:00,139 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 09:44:00,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:44:00" (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 [2018-10-04 09:44:00,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 09:44:00,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 09:44:00,429 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 09:44:00,430 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:44:00 BoogieIcfgContainer [2018-10-04 09:44:00,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 09:44:00,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 09:44:00,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 09:44:00,435 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 09:44:00,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:44:00" (1/2) ... [2018-10-04 09:44:00,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc60b59 and model type gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 09:44:00, skipping insertion in model container [2018-10-04 09:44:00,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:44:00" (2/2) ... [2018-10-04 09:44:00,439 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i_3.bpl [2018-10-04 09:44:00,449 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 09:44:00,457 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 09:44:00,509 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 09:44:00,510 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 09:44:00,510 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 09:44:00,510 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 09:44:00,510 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 09:44:00,511 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 09:44:00,511 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 09:44:00,511 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 09:44:00,511 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 09:44:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-04 09:44:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 09:44:00,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:00,535 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 09:44:00,536 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:00,543 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:00,544 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-04 09:44:00,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:00,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:00,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:00,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:00,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:00,645 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:00,645 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:00,645 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:00,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:00,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:00,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:44:00,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:44:00,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:44:00,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:44:00,847 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:00,849 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-04 09:44:00,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:00,898 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-04 09:44:00,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:44:00,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-04 09:44:00,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:00,916 INFO L225 Difference]: With dead ends: 11 [2018-10-04 09:44:00,916 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 09:44:00,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 09:44:00,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 09:44:00,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 09:44:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 09:44:00,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 09:44:00,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-04 09:44:00,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:00,954 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 09:44:00,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:44:00,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 09:44:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 09:44:00,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:00,955 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-04 09:44:00,956 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:00,956 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:00,956 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-04 09:44:00,956 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:00,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:00,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:00,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:00,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:00,968 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:00,969 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:00,969 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:00,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:00,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:01,104 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:01,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-10-04 09:44:01,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 09:44:01,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 09:44:01,107 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:01,107 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-04 09:44:01,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:01,174 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 09:44:01,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 09:44:01,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-04 09:44:01,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:01,176 INFO L225 Difference]: With dead ends: 11 [2018-10-04 09:44:01,176 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 09:44:01,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 2 [2018-10-04 09:44:01,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 09:44:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 09:44:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 09:44:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 09:44:01,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-04 09:44:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:01,181 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 09:44:01,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 09:44:01,181 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 09:44:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 09:44:01,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:01,182 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-04 09:44:01,182 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:01,182 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:01,182 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-04 09:44:01,183 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:01,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:01,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:01,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:01,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:01,191 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:01,192 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:01,192 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 (exit command is (exit), workingDir is null) [2018-10-04 09:44:01,204 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:01,218 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:01,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:01,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:01,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:01,405 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-04 09:44:01,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 09:44:01,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 09:44:01,405 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:01,406 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-04 09:44:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:01,450 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 09:44:01,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:44:01,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-04 09:44:01,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:01,452 INFO L225 Difference]: With dead ends: 13 [2018-10-04 09:44:01,452 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 09:44:01,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-04 09:44:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 09:44:01,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 09:44:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 09:44:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 09:44:01,457 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-04 09:44:01,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:01,458 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 09:44:01,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 09:44:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 09:44:01,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 09:44:01,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:01,459 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-04 09:44:01,459 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:01,459 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:01,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-04 09:44:01,460 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:01,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:01,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:01,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:01,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:01,470 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:01,470 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:01,470 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:01,484 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:01,498 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-04 09:44:01,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:01,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:01,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:01,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-04 09:44:01,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 09:44:01,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 09:44:01,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:01,821 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-04 09:44:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:01,888 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 09:44:01,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 09:44:01,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-04 09:44:01,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:01,890 INFO L225 Difference]: With dead ends: 15 [2018-10-04 09:44:01,890 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 09:44:01,891 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 4 [2018-10-04 09:44:01,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 09:44:01,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 09:44:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 09:44:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 09:44:01,896 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-04 09:44:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:01,896 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 09:44:01,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 09:44:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 09:44:01,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 09:44:01,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:01,897 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-04 09:44:01,898 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:01,898 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:01,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-04 09:44:01,899 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:01,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:01,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:01,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:01,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:01,909 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:01,910 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:01,910 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:01,922 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:01,972 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:01,972 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:01,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:02,115 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:02,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-04 09:44:02,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 09:44:02,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 09:44:02,117 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:02,117 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-10-04 09:44:02,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:02,288 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 09:44:02,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 09:44:02,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-04 09:44:02,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:02,289 INFO L225 Difference]: With dead ends: 17 [2018-10-04 09:44:02,289 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 09:44:02,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5 [2018-10-04 09:44:02,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 09:44:02,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 09:44:02,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 09:44:02,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 09:44:02,298 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-04 09:44:02,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:02,298 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 09:44:02,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 09:44:02,298 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 09:44:02,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 09:44:02,299 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:02,299 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-04 09:44:02,299 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:02,300 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:02,300 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-04 09:44:02,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:02,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:02,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:02,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:02,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:02,311 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:02,312 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:02,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:02,321 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:44:02,336 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-04 09:44:02,336 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:02,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:02,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:02,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-04 09:44:02,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 09:44:02,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 09:44:02,507 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:02,507 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-10-04 09:44:02,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:02,642 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 09:44:02,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 09:44:02,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-04 09:44:02,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:02,644 INFO L225 Difference]: With dead ends: 19 [2018-10-04 09:44:02,644 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 09:44:02,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-04 09:44:02,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 09:44:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 09:44:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 09:44:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 09:44:02,650 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-04 09:44:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:02,650 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 09:44:02,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 09:44:02,650 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 09:44:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 09:44:02,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:02,651 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-10-04 09:44:02,652 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:02,652 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:02,652 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-10-04 09:44:02,652 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:02,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:02,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:02,653 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:02,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:02,663 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:02,664 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:02,664 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:02,679 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:44:02,701 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 09:44:02,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:02,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:03,251 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:03,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-04 09:44:03,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 09:44:03,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 09:44:03,252 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:03,252 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-10-04 09:44:03,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:03,413 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 09:44:03,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 09:44:03,416 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-04 09:44:03,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:03,417 INFO L225 Difference]: With dead ends: 21 [2018-10-04 09:44:03,417 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 09:44:03,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 7 [2018-10-04 09:44:03,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 09:44:03,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 09:44:03,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 09:44:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 09:44:03,422 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-04 09:44:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:03,423 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 09:44:03,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 09:44:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 09:44:03,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 09:44:03,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:03,424 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-04 09:44:03,424 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:03,424 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:03,425 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-10-04 09:44:03,425 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:03,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:03,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:03,426 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:03,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:03,437 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:03,437 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:03,437 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:03,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:03,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:03,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:03,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-04 09:44:03,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 09:44:03,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 09:44:03,626 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:03,626 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-10-04 09:44:03,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:03,742 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 09:44:03,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 09:44:03,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-04 09:44:03,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:03,744 INFO L225 Difference]: With dead ends: 23 [2018-10-04 09:44:03,744 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 09:44:03,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8 [2018-10-04 09:44:03,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 09:44:03,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 09:44:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 09:44:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 09:44:03,750 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-04 09:44:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:03,750 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 09:44:03,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 09:44:03,750 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 09:44:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 09:44:03,751 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:03,751 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-10-04 09:44:03,751 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:03,752 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:03,752 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-10-04 09:44:03,752 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:03,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:03,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:03,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:03,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:03,764 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:03,764 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:03,764 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:03,782 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:44:03,797 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:03,797 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:03,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:03,991 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:03,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-04 09:44:03,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 09:44:03,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 09:44:03,992 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:03,992 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-10-04 09:44:04,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:04,115 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 09:44:04,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 09:44:04,120 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-10-04 09:44:04,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:04,120 INFO L225 Difference]: With dead ends: 25 [2018-10-04 09:44:04,121 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 09:44:04,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9 [2018-10-04 09:44:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 09:44:04,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 09:44:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 09:44:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 09:44:04,127 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-10-04 09:44:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:04,127 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 09:44:04,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 09:44:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 09:44:04,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 09:44:04,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:04,128 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-04 09:44:04,128 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:04,129 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:04,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-10-04 09:44:04,129 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:04,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:04,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:04,130 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:04,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:04,141 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:04,141 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:04,141 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:04,153 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:04,178 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-04 09:44:04,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:04,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:04,462 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:04,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-04 09:44:04,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 09:44:04,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 09:44:04,464 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:04,464 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-04 09:44:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:04,633 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 09:44:04,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 09:44:04,633 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-04 09:44:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:04,634 INFO L225 Difference]: With dead ends: 27 [2018-10-04 09:44:04,634 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 09:44:04,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 10 [2018-10-04 09:44:04,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 09:44:04,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 09:44:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 09:44:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 09:44:04,640 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-10-04 09:44:04,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:04,640 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 09:44:04,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 09:44:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 09:44:04,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 09:44:04,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:04,641 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-10-04 09:44:04,641 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:04,641 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:04,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-10-04 09:44:04,642 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:04,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:04,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:04,643 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:04,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:04,652 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:04,653 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:04,653 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:04,665 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:04,683 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:04,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:04,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:04,889 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:04,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:04,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-04 09:44:04,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 09:44:04,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 09:44:04,911 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:04,911 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-10-04 09:44:05,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:05,250 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 09:44:05,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 09:44:05,251 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-10-04 09:44:05,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:05,252 INFO L225 Difference]: With dead ends: 29 [2018-10-04 09:44:05,252 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 09:44:05,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime 11 [2018-10-04 09:44:05,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 09:44:05,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 09:44:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 09:44:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 09:44:05,258 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-10-04 09:44:05,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:05,259 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 09:44:05,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 09:44:05,259 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 09:44:05,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 09:44:05,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:05,260 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-04 09:44:05,260 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:05,260 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:05,261 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-10-04 09:44:05,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:05,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:05,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:05,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:05,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:05,272 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:05,272 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:05,272 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:05,285 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:44:05,309 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-04 09:44:05,309 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:05,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:05,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:05,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-04 09:44:05,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 09:44:05,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 09:44:05,833 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:05,833 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-10-04 09:44:06,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:06,143 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 09:44:06,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 09:44:06,144 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-04 09:44:06,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:06,145 INFO L225 Difference]: With dead ends: 31 [2018-10-04 09:44:06,145 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 09:44:06,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 12 [2018-10-04 09:44:06,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 09:44:06,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 09:44:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 09:44:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 09:44:06,152 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-10-04 09:44:06,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:06,152 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 09:44:06,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 09:44:06,152 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 09:44:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 09:44:06,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:06,153 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-10-04 09:44:06,154 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:06,154 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:06,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-10-04 09:44:06,154 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:06,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:06,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:06,155 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:06,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:06,165 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:06,166 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:06,166 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:06,182 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:44:06,211 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 09:44:06,211 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:06,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:06,483 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:06,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-04 09:44:06,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 09:44:06,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 09:44:06,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:06,484 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-10-04 09:44:06,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:06,857 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 09:44:06,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 09:44:06,857 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-10-04 09:44:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:06,858 INFO L225 Difference]: With dead ends: 33 [2018-10-04 09:44:06,858 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 09:44:06,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 13 [2018-10-04 09:44:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 09:44:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 09:44:06,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 09:44:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 09:44:06,865 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-10-04 09:44:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:06,866 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 09:44:06,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 09:44:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 09:44:06,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 09:44:06,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:06,867 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-04 09:44:06,867 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:06,867 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:06,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-10-04 09:44:06,868 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:06,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:06,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:06,869 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:06,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:06,898 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:06,898 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:06,899 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:06,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:06,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:08,333 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:08,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:08,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-04 09:44:08,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 09:44:08,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 09:44:08,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:08,356 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-10-04 09:44:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:08,565 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 09:44:08,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 09:44:08,572 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-04 09:44:08,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:08,572 INFO L225 Difference]: With dead ends: 35 [2018-10-04 09:44:08,573 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 09:44:08,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 14 [2018-10-04 09:44:08,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 09:44:08,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 09:44:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 09:44:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 09:44:08,579 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-10-04 09:44:08,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:08,579 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 09:44:08,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 09:44:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 09:44:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 09:44:08,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:08,580 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-10-04 09:44:08,580 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:08,581 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:08,581 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-10-04 09:44:08,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:08,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:08,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:08,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:08,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:08,592 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:08,593 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:08,593 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:08,607 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:44:08,629 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:08,629 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:08,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:09,706 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:09,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:09,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-04 09:44:09,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 09:44:09,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 09:44:09,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:09,736 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-10-04 09:44:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:10,005 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 09:44:10,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 09:44:10,006 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-04 09:44:10,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:10,007 INFO L225 Difference]: With dead ends: 37 [2018-10-04 09:44:10,007 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 09:44:10,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 15 [2018-10-04 09:44:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 09:44:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 09:44:10,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 09:44:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 09:44:10,014 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-04 09:44:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:10,014 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 09:44:10,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 09:44:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 09:44:10,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 09:44:10,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:10,015 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-04 09:44:10,016 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:10,016 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:10,016 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-10-04 09:44:10,016 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:10,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:10,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:10,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:10,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:10,029 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:10,029 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:10,029 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:10,039 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:10,104 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-04 09:44:10,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:10,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:10,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:10,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-04 09:44:10,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 09:44:10,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 09:44:10,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:10,533 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-10-04 09:44:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:10,823 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 09:44:10,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 09:44:10,826 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-04 09:44:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:10,827 INFO L225 Difference]: With dead ends: 39 [2018-10-04 09:44:10,827 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 09:44:10,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 16 [2018-10-04 09:44:10,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 09:44:10,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 09:44:10,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 09:44:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 09:44:10,836 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-10-04 09:44:10,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:10,837 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 09:44:10,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 09:44:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 09:44:10,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 09:44:10,838 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:10,838 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-10-04 09:44:10,838 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:10,839 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:10,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-10-04 09:44:10,839 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:10,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:10,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:10,840 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:10,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:10,860 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:10,860 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:10,861 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:10,875 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:10,901 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:10,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:10,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:11,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:11,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-04 09:44:11,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 09:44:11,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 09:44:11,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:11,342 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-10-04 09:44:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:11,654 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 09:44:11,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 09:44:11,660 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-10-04 09:44:11,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:11,661 INFO L225 Difference]: With dead ends: 41 [2018-10-04 09:44:11,661 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 09:44:11,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 17 [2018-10-04 09:44:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 09:44:11,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 09:44:11,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 09:44:11,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 09:44:11,672 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-10-04 09:44:11,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:11,672 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 09:44:11,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 09:44:11,672 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 09:44:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 09:44:11,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:11,676 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-04 09:44:11,676 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:11,676 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:11,676 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-10-04 09:44:11,676 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:11,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:11,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:11,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:11,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:11,687 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:11,687 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:11,687 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:11,703 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:44:11,732 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-04 09:44:11,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:11,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:12,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:12,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-04 09:44:12,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 09:44:12,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 09:44:12,216 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:12,216 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-10-04 09:44:12,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:12,836 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 09:44:12,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 09:44:12,836 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-04 09:44:12,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:12,837 INFO L225 Difference]: With dead ends: 43 [2018-10-04 09:44:12,837 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 09:44:12,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 18 [2018-10-04 09:44:12,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 09:44:12,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 09:44:12,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 09:44:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 09:44:12,845 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-10-04 09:44:12,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:12,845 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 09:44:12,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 09:44:12,845 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 09:44:12,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 09:44:12,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:12,846 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-10-04 09:44:12,846 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:12,847 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:12,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-10-04 09:44:12,847 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:12,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:12,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:12,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:12,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:12,856 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:12,857 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:12,857 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:12,868 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:44:12,924 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 09:44:12,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:12,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:13,310 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:13,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:13,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-04 09:44:13,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 09:44:13,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 09:44:13,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:13,344 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-10-04 09:44:13,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:13,956 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 09:44:13,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 09:44:13,957 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-10-04 09:44:13,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:13,958 INFO L225 Difference]: With dead ends: 45 [2018-10-04 09:44:13,958 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 09:44:13,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 19 [2018-10-04 09:44:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 09:44:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 09:44:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 09:44:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 09:44:13,963 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-10-04 09:44:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:13,964 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 09:44:13,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 09:44:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 09:44:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 09:44:13,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:13,965 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-04 09:44:13,965 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:13,965 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:13,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-10-04 09:44:13,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:13,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:13,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:13,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:13,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:13,974 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:13,974 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:13,975 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:13,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:14,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:14,400 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:14,441 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:14,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:14,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-04 09:44:14,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 09:44:14,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 09:44:14,462 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:14,462 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-10-04 09:44:14,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:14,884 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 09:44:14,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 09:44:14,885 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-04 09:44:14,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:14,886 INFO L225 Difference]: With dead ends: 47 [2018-10-04 09:44:14,886 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 09:44:14,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 20 [2018-10-04 09:44:14,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 09:44:14,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 09:44:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 09:44:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 09:44:14,896 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-10-04 09:44:14,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:14,896 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 09:44:14,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 09:44:14,896 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 09:44:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 09:44:14,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:14,897 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-10-04 09:44:14,897 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:14,897 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:14,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-10-04 09:44:14,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:14,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:14,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:14,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:14,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:14,910 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:14,911 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:14,911 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:14,939 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:44:14,970 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:14,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:14,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:15,460 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:15,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:15,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-04 09:44:15,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 09:44:15,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 09:44:15,545 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:15,545 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-10-04 09:44:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:15,943 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 09:44:15,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 09:44:15,944 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-04 09:44:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:15,945 INFO L225 Difference]: With dead ends: 49 [2018-10-04 09:44:15,945 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 09:44:15,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 21 [2018-10-04 09:44:15,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 09:44:15,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 09:44:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 09:44:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 09:44:15,953 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-10-04 09:44:15,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:15,953 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 09:44:15,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 09:44:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 09:44:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 09:44:15,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:15,955 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-04 09:44:15,955 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:15,955 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-10-04 09:44:15,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:15,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:15,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:15,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:15,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:15,964 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:15,964 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:15,965 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:15,979 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:16,120 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-04 09:44:16,120 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:16,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:16,573 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:16,797 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:16,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-04 09:44:16,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 09:44:16,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 09:44:16,798 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:16,798 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-10-04 09:44:17,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:17,304 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 09:44:17,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 09:44:17,305 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-04 09:44:17,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:17,306 INFO L225 Difference]: With dead ends: 51 [2018-10-04 09:44:17,306 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 09:44:17,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 22 [2018-10-04 09:44:17,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 09:44:17,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 09:44:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 09:44:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 09:44:17,312 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-10-04 09:44:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:17,312 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 09:44:17,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 09:44:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 09:44:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 09:44:17,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:17,313 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-10-04 09:44:17,314 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:17,314 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:17,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-10-04 09:44:17,314 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:17,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:17,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:17,315 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:17,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:17,326 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:17,326 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:17,326 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:17,339 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:17,382 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:17,382 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:17,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:17,811 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:17,935 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:17,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:17,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-04 09:44:17,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 09:44:17,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 09:44:17,957 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:17,957 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-10-04 09:44:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:18,370 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 09:44:18,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 09:44:18,377 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-10-04 09:44:18,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:18,378 INFO L225 Difference]: With dead ends: 53 [2018-10-04 09:44:18,378 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 09:44:18,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 23 [2018-10-04 09:44:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 09:44:18,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 09:44:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 09:44:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 09:44:18,394 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-04 09:44:18,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:18,394 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 09:44:18,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 09:44:18,394 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 09:44:18,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 09:44:18,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:18,395 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-04 09:44:18,395 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:18,395 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:18,396 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-10-04 09:44:18,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:18,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:18,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:18,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:18,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:18,411 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:18,412 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:18,412 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:18,429 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:44:18,477 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-04 09:44:18,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:18,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:18,801 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:18,999 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:18,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-04 09:44:18,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 09:44:19,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 09:44:19,000 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:19,000 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-10-04 09:44:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:19,512 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 09:44:19,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 09:44:19,512 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-04 09:44:19,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:19,513 INFO L225 Difference]: With dead ends: 55 [2018-10-04 09:44:19,513 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 09:44:19,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 24 [2018-10-04 09:44:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 09:44:19,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 09:44:19,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 09:44:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 09:44:19,520 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-10-04 09:44:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:19,520 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 09:44:19,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 09:44:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 09:44:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 09:44:19,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:19,521 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-10-04 09:44:19,521 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:19,522 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:19,522 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-10-04 09:44:19,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:19,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:19,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:19,523 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:19,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:19,529 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:19,530 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:19,530 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 (exit command is (exit), workingDir is null) [2018-10-04 09:44:19,544 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:19,634 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 09:44:19,634 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:19,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:19,979 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:20,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:20,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-04 09:44:20,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 09:44:20,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 09:44:20,207 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:20,207 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-10-04 09:44:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:20,763 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 09:44:20,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 09:44:20,764 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-10-04 09:44:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:20,765 INFO L225 Difference]: With dead ends: 57 [2018-10-04 09:44:20,765 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 09:44:20,765 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 25 [2018-10-04 09:44:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 09:44:20,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 09:44:20,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 09:44:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 09:44:20,773 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-10-04 09:44:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:20,774 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 09:44:20,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 09:44:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 09:44:20,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 09:44:20,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:20,775 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-04 09:44:20,775 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:20,775 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-10-04 09:44:20,776 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:20,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:20,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:20,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:20,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:20,784 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:20,784 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:20,784 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:20,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:20,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:21,187 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:21,585 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:21,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-04 09:44:21,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 09:44:21,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 09:44:21,586 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:21,586 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-10-04 09:44:22,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:22,186 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 09:44:22,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 09:44:22,186 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-04 09:44:22,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:22,187 INFO L225 Difference]: With dead ends: 59 [2018-10-04 09:44:22,187 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 09:44:22,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 26 [2018-10-04 09:44:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 09:44:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 09:44:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 09:44:22,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 09:44:22,193 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-10-04 09:44:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:22,193 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 09:44:22,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 09:44:22,193 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 09:44:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 09:44:22,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:22,194 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-10-04 09:44:22,194 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:22,194 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:22,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-10-04 09:44:22,194 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:22,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:22,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:22,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:22,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:22,202 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:22,202 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:22,202 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:22,217 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:44:22,263 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:22,263 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:22,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:22,609 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:22,888 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:22,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-04 09:44:22,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 09:44:22,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 09:44:22,889 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:22,889 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-10-04 09:44:23,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:23,460 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 09:44:23,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 09:44:23,460 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-10-04 09:44:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:23,461 INFO L225 Difference]: With dead ends: 61 [2018-10-04 09:44:23,461 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 09:44:23,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 27 [2018-10-04 09:44:23,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 09:44:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 09:44:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 09:44:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 09:44:23,468 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-10-04 09:44:23,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:23,468 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 09:44:23,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 09:44:23,468 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 09:44:23,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 09:44:23,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:23,469 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-04 09:44:23,469 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:23,470 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:23,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-10-04 09:44:23,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:23,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:23,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:23,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:23,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:23,477 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:23,477 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:23,478 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:23,492 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:23,815 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-04 09:44:23,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:23,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:24,151 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:24,437 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:24,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-04 09:44:24,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 09:44:24,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 09:44:24,438 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:24,438 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-10-04 09:44:24,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:24,992 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 09:44:24,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 09:44:24,993 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-04 09:44:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:24,994 INFO L225 Difference]: With dead ends: 63 [2018-10-04 09:44:24,994 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 09:44:24,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 28 [2018-10-04 09:44:24,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 09:44:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 09:44:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 09:44:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 09:44:24,999 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-10-04 09:44:24,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:24,999 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 09:44:24,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 09:44:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 09:44:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 09:44:24,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:24,999 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-10-04 09:44:25,000 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:25,000 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:25,000 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-10-04 09:44:25,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:25,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:25,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:25,001 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:25,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:25,007 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:25,007 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:25,007 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:25,019 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:25,077 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:25,077 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:25,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:25,409 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:25,764 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:25,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-04 09:44:25,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 09:44:25,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 09:44:25,765 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:25,765 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-10-04 09:44:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:26,503 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 09:44:26,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 09:44:26,503 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-10-04 09:44:26,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:26,504 INFO L225 Difference]: With dead ends: 65 [2018-10-04 09:44:26,504 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 09:44:26,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 29 [2018-10-04 09:44:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 09:44:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 09:44:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 09:44:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 09:44:26,510 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-10-04 09:44:26,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:26,510 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 09:44:26,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 09:44:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 09:44:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 09:44:26,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:26,511 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-04 09:44:26,512 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:26,512 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:26,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-10-04 09:44:26,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:26,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:26,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:26,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:26,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:26,519 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:26,519 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:26,519 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:26,529 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:44:26,597 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-04 09:44:26,597 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:26,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:27,068 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:27,478 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:27,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:27,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-04 09:44:27,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 09:44:27,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 09:44:27,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:27,500 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-10-04 09:44:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:28,210 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 09:44:28,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 09:44:28,210 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-04 09:44:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:28,211 INFO L225 Difference]: With dead ends: 67 [2018-10-04 09:44:28,211 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 09:44:28,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 30 [2018-10-04 09:44:28,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 09:44:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 09:44:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 09:44:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 09:44:28,217 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-10-04 09:44:28,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:28,217 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 09:44:28,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 09:44:28,217 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 09:44:28,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 09:44:28,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:28,218 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-10-04 09:44:28,218 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:28,218 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:28,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-10-04 09:44:28,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:28,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:28,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:28,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:28,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:28,226 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:28,226 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:28,226 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:28,247 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:44:28,569 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 09:44:28,570 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:28,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:28,879 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:29,264 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:29,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:29,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-04 09:44:29,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 09:44:29,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 09:44:29,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:29,285 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-10-04 09:44:29,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:29,992 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 09:44:29,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 09:44:29,992 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-10-04 09:44:29,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:29,993 INFO L225 Difference]: With dead ends: 69 [2018-10-04 09:44:29,994 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 09:44:29,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 31 [2018-10-04 09:44:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 09:44:29,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 09:44:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 09:44:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 09:44:29,999 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-10-04 09:44:30,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:30,000 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 09:44:30,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 09:44:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 09:44:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 09:44:30,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:30,001 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-04 09:44:30,001 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:30,001 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:30,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-10-04 09:44:30,001 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:30,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:30,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:30,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:30,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:30,008 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:30,008 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:30,009 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:30,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:30,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:30,395 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:31,002 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:31,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-04 09:44:31,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 09:44:31,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 09:44:31,003 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:31,003 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-10-04 09:44:31,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:31,901 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 09:44:31,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 09:44:31,902 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-04 09:44:31,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:31,902 INFO L225 Difference]: With dead ends: 71 [2018-10-04 09:44:31,902 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 09:44:31,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 32 [2018-10-04 09:44:31,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 09:44:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 09:44:31,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 09:44:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 09:44:31,909 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-10-04 09:44:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:31,909 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 09:44:31,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 09:44:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 09:44:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 09:44:31,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:31,910 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-10-04 09:44:31,910 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:31,910 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:31,910 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-10-04 09:44:31,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:31,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:31,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:31,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:31,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:31,917 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:31,917 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:31,917 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:31,925 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:44:31,988 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:31,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:31,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:32,325 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:32,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:32,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-04 09:44:32,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 09:44:32,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 09:44:32,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:32,811 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-10-04 09:44:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:33,587 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 09:44:33,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 09:44:33,588 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-10-04 09:44:33,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:33,589 INFO L225 Difference]: With dead ends: 73 [2018-10-04 09:44:33,589 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 09:44:33,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.6s impTime 33 [2018-10-04 09:44:33,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 09:44:33,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 09:44:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 09:44:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 09:44:33,596 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-10-04 09:44:33,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:33,596 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 09:44:33,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 09:44:33,596 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 09:44:33,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 09:44:33,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:33,597 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-04 09:44:33,597 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:33,597 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:33,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-10-04 09:44:33,598 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:33,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:33,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:33,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:33,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:33,604 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:33,605 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:33,605 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:33,619 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:34,318 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-04 09:44:34,318 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:34,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:34,627 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:35,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:35,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-04 09:44:35,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 09:44:35,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 09:44:35,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:35,246 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-10-04 09:44:36,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:36,111 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 09:44:36,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 09:44:36,111 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-04 09:44:36,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:36,112 INFO L225 Difference]: With dead ends: 75 [2018-10-04 09:44:36,113 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 09:44:36,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.7s impTime 34 [2018-10-04 09:44:36,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 09:44:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 09:44:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 09:44:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 09:44:36,119 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-10-04 09:44:36,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:36,119 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 09:44:36,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 09:44:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 09:44:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 09:44:36,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:36,120 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-10-04 09:44:36,120 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:36,121 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:36,121 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-10-04 09:44:36,121 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:36,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:36,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:36,122 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:36,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:36,129 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:36,129 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:36,129 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:36,143 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:36,218 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:36,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:36,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:37,351 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:37,937 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:44:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:37,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:37,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-04 09:44:37,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 09:44:37,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 09:44:37,970 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:37,971 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-10-04 09:44:38,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:38,891 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 09:44:38,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 09:44:38,891 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-10-04 09:44:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:38,893 INFO L225 Difference]: With dead ends: 77 [2018-10-04 09:44:38,893 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 09:44:38,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 35 [2018-10-04 09:44:38,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 09:44:38,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 09:44:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 09:44:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 09:44:38,899 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-10-04 09:44:38,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:38,899 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 09:44:38,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 09:44:38,899 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 09:44:38,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 09:44:38,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:38,900 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-04 09:44:38,900 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:38,900 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:38,900 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-10-04 09:44:38,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:38,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:38,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:38,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:38,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:38,908 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:38,909 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:38,909 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:38,917 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:44:38,999 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 09:44:38,999 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:39,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:39,286 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:39,910 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:44:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:39,988 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:39,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-04 09:44:39,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 09:44:39,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 09:44:39,989 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:39,989 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-10-04 09:44:40,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:40,897 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 09:44:40,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 09:44:40,897 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-04 09:44:40,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:40,898 INFO L225 Difference]: With dead ends: 79 [2018-10-04 09:44:40,898 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 09:44:40,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.7s impTime 36 [2018-10-04 09:44:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 09:44:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 09:44:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 09:44:40,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-04 09:44:40,904 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-10-04 09:44:40,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:40,904 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-04 09:44:40,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 09:44:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-04 09:44:40,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 09:44:40,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:40,905 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-10-04 09:44:40,905 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:40,905 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:40,905 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-10-04 09:44:40,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:40,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:40,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:40,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:40,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:40,913 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:40,913 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:40,913 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:40,926 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:44:41,179 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 09:44:41,179 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:41,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:41,574 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:42,378 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:44:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:42,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:42,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-04 09:44:42,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 09:44:42,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 09:44:42,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:42,498 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-10-04 09:44:43,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:43,602 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 09:44:43,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 09:44:43,602 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-10-04 09:44:43,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:43,603 INFO L225 Difference]: With dead ends: 81 [2018-10-04 09:44:43,603 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 09:44:43,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime 37 [2018-10-04 09:44:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 09:44:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 09:44:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 09:44:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 09:44:43,608 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-10-04 09:44:43,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:43,608 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 09:44:43,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 09:44:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 09:44:43,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 09:44:43,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:43,609 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-04 09:44:43,609 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:43,609 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:43,609 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-10-04 09:44:43,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:43,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:43,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:43,610 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:43,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:43,617 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:43,617 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:43,617 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:43,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:43,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:44,085 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:44,665 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:44:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:44,838 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:44,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-04 09:44:44,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 09:44:44,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 09:44:44,838 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:44,839 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-10-04 09:44:45,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:45,924 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 09:44:45,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 09:44:45,924 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-04 09:44:45,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:45,925 INFO L225 Difference]: With dead ends: 83 [2018-10-04 09:44:45,926 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 09:44:45,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 38 [2018-10-04 09:44:45,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 09:44:45,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 09:44:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 09:44:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-04 09:44:45,931 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-10-04 09:44:45,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:45,932 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-04 09:44:45,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 09:44:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-04 09:44:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 09:44:45,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:45,933 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-10-04 09:44:45,933 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:45,933 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:45,933 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-10-04 09:44:45,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:45,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:45,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:45,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:45,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:45,941 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:45,941 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:45,941 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:45,955 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:44:46,040 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:46,041 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:46,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:46,866 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:48,319 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:44:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:48,541 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:48,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-04 09:44:48,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 09:44:48,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 09:44:48,542 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:48,542 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-10-04 09:44:49,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:49,769 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 09:44:49,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 09:44:49,769 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-10-04 09:44:49,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:49,770 INFO L225 Difference]: With dead ends: 85 [2018-10-04 09:44:49,770 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 09:44:49,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 39 [2018-10-04 09:44:49,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 09:44:49,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 09:44:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 09:44:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 09:44:49,776 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-10-04 09:44:49,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:49,776 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 09:44:49,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 09:44:49,776 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 09:44:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 09:44:49,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:49,776 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-04 09:44:49,777 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:49,777 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:49,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-10-04 09:44:49,777 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:49,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:49,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:49,778 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:49,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:49,784 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:49,785 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:49,785 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:49,796 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:51,221 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-04 09:44:51,221 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:51,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:51,529 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:52,197 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:44:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:52,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:52,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-04 09:44:52,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 09:44:52,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 09:44:52,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:52,563 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-10-04 09:44:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:53,805 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 09:44:53,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 09:44:53,806 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-04 09:44:53,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:53,807 INFO L225 Difference]: With dead ends: 87 [2018-10-04 09:44:53,807 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 09:44:53,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime 40 [2018-10-04 09:44:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 09:44:53,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 09:44:53,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 09:44:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-04 09:44:53,812 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-10-04 09:44:53,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:53,813 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-04 09:44:53,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 09:44:53,813 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-04 09:44:53,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 09:44:53,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:53,813 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-10-04 09:44:53,813 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:53,813 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:53,814 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-10-04 09:44:53,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:53,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:53,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:53,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:53,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:53,823 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:53,823 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:53,823 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:53,857 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:53,960 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:53,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:53,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:54,510 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:55,121 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:44:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:55,478 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:55,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-04 09:44:55,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 09:44:55,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 09:44:55,479 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:55,479 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-10-04 09:44:56,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:56,771 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 09:44:56,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 09:44:56,771 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-10-04 09:44:56,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:56,772 INFO L225 Difference]: With dead ends: 89 [2018-10-04 09:44:56,772 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 09:44:56,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 41 [2018-10-04 09:44:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 09:44:56,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 09:44:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 09:44:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 09:44:56,779 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-10-04 09:44:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:56,779 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 09:44:56,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 09:44:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 09:44:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 09:44:56,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:56,780 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-04 09:44:56,780 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:56,780 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:56,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-10-04 09:44:56,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:56,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:56,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:56,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:56,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:56,789 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:44:56,789 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:44:56,789 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:44:56,805 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:44:56,950 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-04 09:44:56,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:56,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:57,668 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:44:59,298 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:44:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:59,671 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:44:59,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-04 09:44:59,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 09:44:59,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 09:44:59,672 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:59,672 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-10-04 09:45:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:00,985 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 09:45:00,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 09:45:00,986 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-04 09:45:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:00,987 INFO L225 Difference]: With dead ends: 91 [2018-10-04 09:45:00,987 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 09:45:00,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.0s impTime 42 [2018-10-04 09:45:00,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 09:45:00,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 09:45:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 09:45:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-04 09:45:00,995 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-10-04 09:45:00,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:00,995 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-04 09:45:00,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 09:45:00,995 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-04 09:45:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 09:45:00,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:00,996 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-10-04 09:45:00,996 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:00,996 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:00,996 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-10-04 09:45:00,996 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:00,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:00,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:00,997 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:00,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:01,004 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:01,004 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:01,004 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:01,017 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:45:01,349 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 09:45:01,350 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:01,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:01,657 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:02,227 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:02,840 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:02,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-04 09:45:02,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 09:45:02,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 09:45:02,841 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:02,841 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-10-04 09:45:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:04,154 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 09:45:04,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 09:45:04,155 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-10-04 09:45:04,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:04,155 INFO L225 Difference]: With dead ends: 93 [2018-10-04 09:45:04,155 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 09:45:04,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime 43 [2018-10-04 09:45:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 09:45:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 09:45:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 09:45:04,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 09:45:04,161 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-10-04 09:45:04,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:04,161 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 09:45:04,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 09:45:04,161 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 09:45:04,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 09:45:04,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:04,161 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-04 09:45:04,162 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:04,162 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:04,162 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-10-04 09:45:04,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:04,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:04,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:04,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:04,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:04,169 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:04,169 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:04,170 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:04,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:45:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:45:04,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:04,568 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:05,137 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:05,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:05,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-04 09:45:05,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 09:45:05,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 09:45:05,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:05,594 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-10-04 09:45:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:06,945 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 09:45:06,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 09:45:06,945 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-04 09:45:06,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:06,946 INFO L225 Difference]: With dead ends: 95 [2018-10-04 09:45:06,946 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 09:45:06,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime 44 [2018-10-04 09:45:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 09:45:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 09:45:06,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 09:45:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-04 09:45:06,951 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-10-04 09:45:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:06,951 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-04 09:45:06,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 09:45:06,951 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-04 09:45:06,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 09:45:06,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:06,952 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-10-04 09:45:06,952 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:06,952 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:06,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-10-04 09:45:06,952 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:06,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:06,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:06,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:45:06,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:06,959 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:06,960 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:06,960 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:06,973 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:45:07,056 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:45:07,057 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:07,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:07,392 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:08,176 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:08,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:08,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-04 09:45:08,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 09:45:08,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 09:45:08,675 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:08,675 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-10-04 09:45:10,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:10,125 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 09:45:10,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 09:45:10,126 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-10-04 09:45:10,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:10,127 INFO L225 Difference]: With dead ends: 97 [2018-10-04 09:45:10,127 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 09:45:10,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 45 [2018-10-04 09:45:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 09:45:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 09:45:10,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 09:45:10,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 09:45:10,133 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-10-04 09:45:10,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:10,133 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 09:45:10,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 09:45:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 09:45:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 09:45:10,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:10,134 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-04 09:45:10,134 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:10,134 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:10,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-10-04 09:45:10,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:10,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:10,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:10,135 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:10,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:10,141 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:10,141 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:10,142 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:10,150 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:45:12,780 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-04 09:45:12,780 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:12,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:13,202 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:13,805 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:14,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:14,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-04 09:45:14,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 09:45:14,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 09:45:14,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:14,381 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-10-04 09:45:15,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:15,935 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 09:45:15,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 09:45:15,935 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-04 09:45:15,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:15,936 INFO L225 Difference]: With dead ends: 99 [2018-10-04 09:45:15,937 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 09:45:15,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 46 [2018-10-04 09:45:15,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 09:45:15,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 09:45:15,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 09:45:15,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-04 09:45:15,942 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-10-04 09:45:15,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:15,942 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-04 09:45:15,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 09:45:15,942 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-04 09:45:15,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 09:45:15,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:15,943 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-10-04 09:45:15,943 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:15,943 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:15,943 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-10-04 09:45:15,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:15,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:15,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:15,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:15,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:15,951 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:15,951 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:15,951 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:15,967 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:45:16,103 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:45:16,103 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:16,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:16,723 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:17,305 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:18,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:18,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-04 09:45:18,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 09:45:18,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 09:45:18,182 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:18,183 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-10-04 09:45:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:19,799 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 09:45:19,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 09:45:19,800 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-10-04 09:45:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:19,801 INFO L225 Difference]: With dead ends: 101 [2018-10-04 09:45:19,801 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 09:45:19,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 47 [2018-10-04 09:45:19,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 09:45:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 09:45:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 09:45:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 09:45:19,807 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-10-04 09:45:19,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:19,807 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 09:45:19,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 09:45:19,807 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 09:45:19,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 09:45:19,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:19,808 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-04 09:45:19,808 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:19,808 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:19,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-10-04 09:45:19,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:19,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:19,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:19,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:19,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:19,816 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:19,816 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:19,816 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:19,831 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:45:19,979 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-04 09:45:19,979 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:19,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:21,065 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:21,698 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:22,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:22,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-04 09:45:22,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 09:45:22,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 09:45:22,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:22,409 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-10-04 09:45:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:24,251 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 09:45:24,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 09:45:24,251 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-04 09:45:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:24,252 INFO L225 Difference]: With dead ends: 103 [2018-10-04 09:45:24,252 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 09:45:24,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime 48 [2018-10-04 09:45:24,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 09:45:24,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 09:45:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 09:45:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-04 09:45:24,259 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-10-04 09:45:24,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:24,259 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-04 09:45:24,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 09:45:24,259 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-04 09:45:24,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 09:45:24,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:24,260 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-10-04 09:45:24,260 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:24,260 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:24,260 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-10-04 09:45:24,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:24,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:24,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:24,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:24,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:24,268 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:24,268 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:24,268 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:24,284 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:45:26,257 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 09:45:26,257 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:26,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:26,564 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:27,141 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:27,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:27,926 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:27,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-04 09:45:27,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 09:45:27,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 09:45:27,927 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:27,927 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-10-04 09:45:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:29,919 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 09:45:29,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 09:45:29,920 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-10-04 09:45:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:29,921 INFO L225 Difference]: With dead ends: 105 [2018-10-04 09:45:29,921 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 09:45:29,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 49 [2018-10-04 09:45:29,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 09:45:29,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 09:45:29,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 09:45:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 09:45:29,928 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-10-04 09:45:29,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:29,928 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 09:45:29,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 09:45:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 09:45:29,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 09:45:29,929 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:29,929 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-04 09:45:29,930 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:29,930 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:29,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-10-04 09:45:29,930 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:29,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:29,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:29,931 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:29,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:29,938 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:29,939 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:29,939 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 (exit command is (exit), workingDir is null) [2018-10-04 09:45:29,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:45:30,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:30,367 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:30,940 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:31,762 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:45:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:31,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:31,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-04 09:45:31,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 09:45:31,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 09:45:31,804 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:31,804 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-10-04 09:45:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:33,891 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 09:45:33,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 09:45:33,891 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-04 09:45:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:33,892 INFO L225 Difference]: With dead ends: 107 [2018-10-04 09:45:33,893 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 09:45:33,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.4s impTime 50 [2018-10-04 09:45:33,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 09:45:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 09:45:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 09:45:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-04 09:45:33,900 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-10-04 09:45:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:33,901 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-04 09:45:33,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 09:45:33,901 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-04 09:45:33,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 09:45:33,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:33,902 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-10-04 09:45:33,902 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:33,902 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:33,902 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-10-04 09:45:33,902 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:33,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:33,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:33,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:45:33,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:33,910 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:33,910 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:33,911 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:33,924 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:45:34,037 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:45:34,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:34,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:34,355 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:35,024 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:35,967 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:45:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:36,199 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:36,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-04 09:45:36,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 09:45:36,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 09:45:36,200 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:36,200 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-10-04 09:45:38,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:38,241 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 09:45:38,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 09:45:38,241 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-10-04 09:45:38,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:38,242 INFO L225 Difference]: With dead ends: 109 [2018-10-04 09:45:38,242 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 09:45:38,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 51 [2018-10-04 09:45:38,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 09:45:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 09:45:38,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 09:45:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 09:45:38,254 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-10-04 09:45:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:38,254 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 09:45:38,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 09:45:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 09:45:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 09:45:38,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:38,255 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-04 09:45:38,255 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:38,255 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:38,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-10-04 09:45:38,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:38,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:38,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:38,257 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:38,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:38,264 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:38,265 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:38,265 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:38,284 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:45:42,965 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-04 09:45:42,965 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:42,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:43,390 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:44,065 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:44,888 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:45:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:45,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:45,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-04 09:45:45,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 09:45:45,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 09:45:45,056 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:45,056 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-10-04 09:45:47,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:47,030 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 09:45:47,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 09:45:47,031 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-04 09:45:47,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:47,032 INFO L225 Difference]: With dead ends: 111 [2018-10-04 09:45:47,032 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 09:45:47,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 52 [2018-10-04 09:45:47,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 09:45:47,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 09:45:47,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 09:45:47,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-04 09:45:47,038 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-10-04 09:45:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:47,038 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-04 09:45:47,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 09:45:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-04 09:45:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 09:45:47,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:47,039 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-10-04 09:45:47,039 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:47,039 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:47,039 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-10-04 09:45:47,039 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:47,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:47,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:47,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:47,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:47,047 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:47,047 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:47,047 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:47,057 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:45:47,181 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:45:47,181 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:47,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:47,483 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:48,149 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:49,189 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:45:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:49,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:49,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-04 09:45:49,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 09:45:49,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 09:45:49,434 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:49,434 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-10-04 09:45:51,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:51,561 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 09:45:51,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 09:45:51,562 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-10-04 09:45:51,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:51,563 INFO L225 Difference]: With dead ends: 113 [2018-10-04 09:45:51,563 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 09:45:51,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.8s impTime 53 [2018-10-04 09:45:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 09:45:51,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 09:45:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 09:45:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 09:45:51,568 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-10-04 09:45:51,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:51,568 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 09:45:51,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 09:45:51,568 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 09:45:51,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 09:45:51,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:51,569 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-04 09:45:51,569 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:51,569 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:51,569 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-10-04 09:45:51,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:51,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:51,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:51,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:51,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:51,575 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:51,575 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:51,576 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:51,590 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:45:51,780 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-04 09:45:51,780 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:51,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:52,129 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:52,704 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:45:53,590 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:45:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:54,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:45:54,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-04 09:45:54,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 09:45:54,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 09:45:54,037 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:54,037 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-10-04 09:45:56,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:56,163 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-04 09:45:56,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 09:45:56,163 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-04 09:45:56,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:56,165 INFO L225 Difference]: With dead ends: 115 [2018-10-04 09:45:56,165 INFO L226 Difference]: Without dead ends: 113 [2018-10-04 09:45:56,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.8s impTime 54 [2018-10-04 09:45:56,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-04 09:45:56,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-04 09:45:56,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-04 09:45:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-04 09:45:56,170 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-10-04 09:45:56,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:56,171 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-04 09:45:56,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 09:45:56,171 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-04 09:45:56,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-04 09:45:56,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:56,171 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-10-04 09:45:56,172 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:56,172 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:56,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-10-04 09:45:56,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:56,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:56,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:56,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:56,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:56,180 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:45:56,181 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:45:56,181 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:45:56,190 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:45:58,452 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-04 09:45:58,452 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:58,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:59,068 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:45:59,648 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:46:00,467 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:46:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:46:00,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:46:00,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-04 09:46:00,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 09:46:00,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 09:46:00,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:46:00,821 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-10-04 09:46:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:46:03,395 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-04 09:46:03,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 09:46:03,395 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-10-04 09:46:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:46:03,397 INFO L225 Difference]: With dead ends: 117 [2018-10-04 09:46:03,397 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 09:46:03,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime 55 [2018-10-04 09:46:03,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 09:46:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 09:46:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 09:46:03,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-04 09:46:03,405 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-10-04 09:46:03,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:46:03,405 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-04 09:46:03,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 09:46:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-04 09:46:03,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 09:46:03,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:46:03,406 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-04 09:46:03,406 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:46:03,406 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:46:03,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-10-04 09:46:03,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:46:03,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:46:03,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:03,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:46:03,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:03,414 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:46:03,415 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:46:03,415 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:46:03,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:46:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:46:03,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:46:04,040 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:46:04,618 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:46:05,441 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:46:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:46:05,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:46:05,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-04 09:46:05,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 09:46:05,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 09:46:05,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:46:05,873 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-10-04 09:46:08,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:46:08,426 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-04 09:46:08,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 09:46:08,427 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-04 09:46:08,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:46:08,428 INFO L225 Difference]: With dead ends: 119 [2018-10-04 09:46:08,428 INFO L226 Difference]: Without dead ends: 117 [2018-10-04 09:46:08,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.9s impTime 56 [2018-10-04 09:46:08,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-04 09:46:08,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-04 09:46:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-04 09:46:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-04 09:46:08,436 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-10-04 09:46:08,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:46:08,437 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-04 09:46:08,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 09:46:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-04 09:46:08,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-04 09:46:08,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:46:08,438 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-10-04 09:46:08,438 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:46:08,438 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:46:08,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-10-04 09:46:08,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:46:08,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:46:08,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:08,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:46:08,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:08,447 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:46:08,447 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:46:08,447 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 (exit command is (exit), workingDir is null) [2018-10-04 09:46:08,462 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:46:08,601 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:46:08,601 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:46:08,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:46:09,749 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:46:10,320 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:46:12,258 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:46:12,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:46:12,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:46:12,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-10-04 09:46:12,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 09:46:12,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 09:46:12,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:46:12,745 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-10-04 09:46:15,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:46:15,300 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-04 09:46:15,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 09:46:15,300 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-10-04 09:46:15,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:46:15,301 INFO L225 Difference]: With dead ends: 121 [2018-10-04 09:46:15,301 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 09:46:15,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.3s impTime 57 [2018-10-04 09:46:15,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 09:46:15,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 09:46:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 09:46:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-04 09:46:15,306 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-10-04 09:46:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:46:15,306 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-04 09:46:15,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 09:46:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-04 09:46:15,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 09:46:15,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:46:15,307 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-04 09:46:15,307 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:46:15,307 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:46:15,307 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-10-04 09:46:15,308 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:46:15,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:46:15,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:15,308 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:46:15,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:15,315 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:46:15,315 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:46:15,315 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:46:15,330 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:46:23,120 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-04 09:46:23,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:46:23,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:46:23,601 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:46:24,205 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:46:25,170 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:46:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:46:25,729 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:46:25,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-10-04 09:46:25,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 09:46:25,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 09:46:25,730 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:46:25,730 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-10-04 09:46:28,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:46:28,210 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-04 09:46:28,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 09:46:28,210 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-04 09:46:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:46:28,211 INFO L225 Difference]: With dead ends: 123 [2018-10-04 09:46:28,211 INFO L226 Difference]: Without dead ends: 121 [2018-10-04 09:46:28,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 58 [2018-10-04 09:46:28,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-04 09:46:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-04 09:46:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-04 09:46:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-04 09:46:28,218 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-10-04 09:46:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:46:28,218 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-04 09:46:28,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 09:46:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-04 09:46:28,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-04 09:46:28,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:46:28,219 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-10-04 09:46:28,219 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:46:28,219 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:46:28,219 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-10-04 09:46:28,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:46:28,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:46:28,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:28,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:46:28,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:28,227 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:46:28,228 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:46:28,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:46:28,260 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:46:28,412 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:46:28,412 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:46:28,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:46:28,718 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:46:29,336 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:46:30,333 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:46:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:46:30,973 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:46:30,973 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-04 09:46:30,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 09:46:30,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 09:46:30,974 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:46:30,974 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-10-04 09:46:33,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:46:33,538 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-04 09:46:33,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 09:46:33,538 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-10-04 09:46:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:46:33,539 INFO L225 Difference]: With dead ends: 125 [2018-10-04 09:46:33,539 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 09:46:33,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.1s impTime 59 [2018-10-04 09:46:33,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 09:46:33,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-04 09:46:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-04 09:46:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-04 09:46:33,548 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-10-04 09:46:33,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:46:33,549 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-04 09:46:33,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 09:46:33,549 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-04 09:46:33,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-04 09:46:33,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:46:33,550 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-04 09:46:33,550 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:46:33,550 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:46:33,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-10-04 09:46:33,550 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:46:33,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:46:33,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:33,551 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:46:33,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:33,558 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:46:33,558 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:46:33,559 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:46:33,574 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:46:33,807 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-04 09:46:33,807 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:46:33,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:46:34,119 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:46:34,928 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:46:35,759 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:46:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:46:36,465 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:46:36,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-10-04 09:46:36,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 09:46:36,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 09:46:36,466 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:46:36,466 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-10-04 09:46:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:46:39,183 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-04 09:46:39,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 09:46:39,183 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-04 09:46:39,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:46:39,184 INFO L225 Difference]: With dead ends: 127 [2018-10-04 09:46:39,184 INFO L226 Difference]: Without dead ends: 125 [2018-10-04 09:46:39,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 60 [2018-10-04 09:46:39,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-04 09:46:39,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-04 09:46:39,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-04 09:46:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-04 09:46:39,190 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-10-04 09:46:39,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:46:39,190 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-04 09:46:39,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 09:46:39,190 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-04 09:46:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-04 09:46:39,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:46:39,191 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-10-04 09:46:39,191 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:46:39,191 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:46:39,191 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-10-04 09:46:39,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:46:39,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:46:39,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:39,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:46:39,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:39,199 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:46:39,199 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:46:39,199 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:46:39,207 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:46:40,744 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-04 09:46:40,745 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:46:40,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:46:41,042 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:46:41,603 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:46:42,400 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:46:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:46:43,184 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:46:43,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-04 09:46:43,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 09:46:43,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 09:46:43,185 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:46:43,185 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-10-04 09:46:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:46:46,042 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-04 09:46:46,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 09:46:46,043 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-10-04 09:46:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:46:46,044 INFO L225 Difference]: With dead ends: 129 [2018-10-04 09:46:46,044 INFO L226 Difference]: Without dead ends: 127 [2018-10-04 09:46:46,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 2.0s impTime 61 [2018-10-04 09:46:46,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-04 09:46:46,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-04 09:46:46,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-04 09:46:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-04 09:46:46,051 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-10-04 09:46:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:46:46,052 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-04 09:46:46,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 09:46:46,052 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-04 09:46:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-04 09:46:46,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:46:46,053 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-04 09:46:46,053 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:46:46,053 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:46:46,053 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-10-04 09:46:46,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:46:46,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:46:46,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:46,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:46:46,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:46,061 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:46:46,062 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:46:46,062 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:46:46,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:46:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:46:46,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:46:46,543 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:46:47,118 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:46:47,932 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:46:48,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:46:48,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:46:48,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-04 09:46:48,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 09:46:48,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 09:46:48,783 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:46:48,783 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-10-04 09:46:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:46:51,719 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-04 09:46:51,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 09:46:51,720 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-04 09:46:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:46:51,721 INFO L225 Difference]: With dead ends: 131 [2018-10-04 09:46:51,721 INFO L226 Difference]: Without dead ends: 129 [2018-10-04 09:46:51,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.1s impTime 62 [2018-10-04 09:46:51,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-04 09:46:51,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-04 09:46:51,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-04 09:46:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-04 09:46:51,727 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-10-04 09:46:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:46:51,727 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-04 09:46:51,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 09:46:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-04 09:46:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-04 09:46:51,727 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:46:51,727 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-10-04 09:46:51,728 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:46:51,728 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:46:51,728 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-10-04 09:46:51,728 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:46:51,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:46:51,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:51,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:46:51,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:51,735 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:46:51,735 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:46:51,735 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:46:51,757 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:46:51,919 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:46:51,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:46:51,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:46:52,226 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:46:52,803 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:46:53,620 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:46:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:46:54,555 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:46:54,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-04 09:46:54,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 09:46:54,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 09:46:54,556 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:46:54,556 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-10-04 09:46:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:46:57,516 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-04 09:46:57,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 09:46:57,517 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-10-04 09:46:57,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:46:57,518 INFO L225 Difference]: With dead ends: 133 [2018-10-04 09:46:57,518 INFO L226 Difference]: Without dead ends: 131 [2018-10-04 09:46:57,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.2s impTime 63 [2018-10-04 09:46:57,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-04 09:46:57,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-04 09:46:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-04 09:46:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-04 09:46:57,523 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-10-04 09:46:57,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:46:57,523 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-04 09:46:57,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 09:46:57,524 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-04 09:46:57,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-04 09:46:57,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:46:57,525 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-04 09:46:57,525 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:46:57,525 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:46:57,525 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-10-04 09:46:57,525 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:46:57,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:46:57,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:57,526 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:46:57,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:46:57,534 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:46:57,535 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:46:57,535 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:46:57,550 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:47:10,268 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-04 09:47:10,268 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:47:10,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:47:10,770 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:47:11,325 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:47:12,144 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:47:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:47:13,159 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:47:13,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-04 09:47:13,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 09:47:13,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 09:47:13,160 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:47:13,160 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-10-04 09:47:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:47:16,344 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-04 09:47:16,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 09:47:16,345 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-04 09:47:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:47:16,346 INFO L225 Difference]: With dead ends: 135 [2018-10-04 09:47:16,346 INFO L226 Difference]: Without dead ends: 133 [2018-10-04 09:47:16,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 64 [2018-10-04 09:47:16,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-04 09:47:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-04 09:47:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-04 09:47:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-04 09:47:16,355 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-10-04 09:47:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:47:16,355 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-04 09:47:16,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 09:47:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-04 09:47:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-04 09:47:16,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:47:16,356 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-10-04 09:47:16,356 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:47:16,357 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:47:16,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-10-04 09:47:16,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:47:16,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:47:16,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:16,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:47:16,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:16,366 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:47:16,366 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:47:16,366 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:47:16,380 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:47:16,681 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:47:16,682 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:47:16,689 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:47:18,018 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:47:18,595 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:47:19,415 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:47:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:47:20,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:47:20,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-04 09:47:20,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 09:47:20,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 09:47:20,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:47:20,500 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-10-04 09:47:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:47:23,853 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-04 09:47:23,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 09:47:23,854 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-10-04 09:47:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:47:23,855 INFO L225 Difference]: With dead ends: 137 [2018-10-04 09:47:23,855 INFO L226 Difference]: Without dead ends: 135 [2018-10-04 09:47:23,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 2.9s impTime 65 [2018-10-04 09:47:23,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-04 09:47:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-04 09:47:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-04 09:47:23,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-04 09:47:23,863 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-10-04 09:47:23,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:47:23,863 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-04 09:47:23,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 09:47:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-04 09:47:23,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-04 09:47:23,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:47:23,864 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-04 09:47:23,864 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:47:23,864 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:47:23,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-10-04 09:47:23,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:47:23,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:47:23,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:23,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:47:23,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:23,873 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:47:23,873 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:47:23,874 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:47:23,889 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:47:24,206 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-04 09:47:24,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:47:24,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:47:24,512 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:47:25,087 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:47:26,114 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:47:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:47:27,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:47:27,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-04 09:47:27,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 09:47:27,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 09:47:27,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:47:27,277 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-10-04 09:47:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:47:30,420 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-04 09:47:30,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 09:47:30,420 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-04 09:47:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:47:30,421 INFO L225 Difference]: With dead ends: 139 [2018-10-04 09:47:30,421 INFO L226 Difference]: Without dead ends: 137 [2018-10-04 09:47:30,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime 66 [2018-10-04 09:47:30,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-04 09:47:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-04 09:47:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-04 09:47:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-04 09:47:30,428 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-10-04 09:47:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:47:30,428 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-04 09:47:30,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 09:47:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-04 09:47:30,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-04 09:47:30,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:47:30,429 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-10-04 09:47:30,429 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:47:30,429 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:47:30,429 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-10-04 09:47:30,429 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:47:30,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:47:30,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:30,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:47:30,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:30,436 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:47:30,436 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:47:30,436 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:47:30,450 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:47:31,844 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-04 09:47:31,844 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:47:31,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:47:32,212 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:47:32,787 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:47:33,602 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:47:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:47:34,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:47:34,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-04 09:47:34,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 09:47:34,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 09:47:34,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:47:34,851 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-10-04 09:47:38,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:47:38,634 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-04 09:47:38,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 09:47:38,635 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-10-04 09:47:38,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:47:38,636 INFO L225 Difference]: With dead ends: 141 [2018-10-04 09:47:38,636 INFO L226 Difference]: Without dead ends: 139 [2018-10-04 09:47:38,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.5s impTime 67 [2018-10-04 09:47:38,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-04 09:47:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-04 09:47:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 09:47:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-04 09:47:38,643 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-10-04 09:47:38,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:47:38,644 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-04 09:47:38,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 09:47:38,644 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-04 09:47:38,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 09:47:38,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:47:38,644 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-04 09:47:38,645 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:47:38,645 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:47:38,645 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-10-04 09:47:38,645 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:47:38,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:47:38,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:38,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:47:38,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:38,651 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:47:38,651 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:47:38,651 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:47:38,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:47:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:47:38,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:47:39,185 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:47:39,758 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:47:40,571 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:47:42,147 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 68 new depth: 68 [2018-10-04 09:47:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:47:42,213 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:47:42,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-10-04 09:47:42,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 09:47:42,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 09:47:42,214 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:47:42,214 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-10-04 09:47:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:47:45,663 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-04 09:47:45,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 09:47:45,664 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-04 09:47:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:47:45,664 INFO L225 Difference]: With dead ends: 143 [2018-10-04 09:47:45,665 INFO L226 Difference]: Without dead ends: 141 [2018-10-04 09:47:45,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.8s impTime 68 [2018-10-04 09:47:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-04 09:47:45,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-04 09:47:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-04 09:47:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-04 09:47:45,671 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-10-04 09:47:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:47:45,671 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-04 09:47:45,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 09:47:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-04 09:47:45,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-04 09:47:45,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:47:45,672 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-10-04 09:47:45,672 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:47:45,672 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:47:45,672 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-10-04 09:47:45,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:47:45,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:47:45,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:45,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:47:45,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:45,680 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:47:45,681 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:47:45,681 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:47:45,695 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:47:45,910 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:47:45,910 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:47:45,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:47:46,377 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:47:47,034 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 [2018-10-04 09:47:47,847 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 50 new depth: 50 [2018-10-04 09:47:49,161 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 68 new depth: 68 [2018-10-04 09:47:49,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:47:49,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 09:47:49,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-10-04 09:47:49,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 09:47:49,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 09:47:49,307 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:47:49,307 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-10-04 09:47:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:47:52,975 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-04 09:47:52,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 09:47:52,976 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-10-04 09:47:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:47:52,977 INFO L225 Difference]: With dead ends: 145 [2018-10-04 09:47:52,977 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 09:47:52,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.8s impTime 69 [2018-10-04 09:47:52,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 09:47:52,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-04 09:47:52,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-04 09:47:52,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-04 09:47:52,982 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-10-04 09:47:52,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:47:52,983 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-04 09:47:52,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 09:47:52,983 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-04 09:47:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-04 09:47:52,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:47:52,984 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-04 09:47:52,984 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:47:52,984 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:47:52,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-10-04 09:47:52,984 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:47:52,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:47:52,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:52,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:47:52,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:47:52,993 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 09:47:52,993 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 09:47:52,993 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:47:53,007 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:48:12,513 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-04 09:48:12,513 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:48:12,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:48:12,819 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 19 [2018-10-04 09:48:13,405 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 35 new depth: 35 Received shutdown request... [2018-10-04 09:48:14,062 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-04 09:48:14,263 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 09:48:14,264 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 09:48:14,269 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 09:48:14,270 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 09:48:14 BoogieIcfgContainer [2018-10-04 09:48:14,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 09:48:14,271 INFO L168 Benchmark]: Toolchain (without parser) took 254204.10 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 88.6 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 16.8 MB). Peak memory consumption was 105.4 MB. Max. memory is 7.1 GB. [2018-10-04 09:48:14,272 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.49 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. [2018-10-04 09:48:14,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.01 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. [2018-10-04 09:48:14,274 INFO L168 Benchmark]: Boogie Preprocessor took 23.49 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. [2018-10-04 09:48:14,274 INFO L168 Benchmark]: RCFGBuilder took 292.20 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. [2018-10-04 09:48:14,275 INFO L168 Benchmark]: TraceAbstraction took 253838.14 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 88.6 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -4.3 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. [2018-10-04 09:48:14,278 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 0.49 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 44.01 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 23.49 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 292.20 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 253838.14 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 88.6 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -4.3 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 45). Cancelled while BasicCegarLoop was analyzing trace of length 143 with TraceHistMax 70, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 2 quantified variables from 4 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 253.7s OverallTime, 70 OverallIterations, 70 TraceHistogramMax, 89.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2622 SDtfs, 0 SDslu, 111896 SDs, 0 SdLazy, 116725 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4899 GetRequests, 2484 SyntacticMatches, 0 SemanticMatches, 2415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 90.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=69, 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: 0.4s AutomataMinimizationTime, 69 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 42.6s SatisfiabilityAnalysisTime, 96.2s InterpolantComputationTime, 4968 NumberOfCodeBlocks, 4968 NumberOfCodeBlocksAsserted, 1236 NumberOfCheckSat, 4899 ConstructedInterpolants, 0 QuantifiedInterpolants, 3204455 SizeOfPredicates, 342 NumberOfNonLiveVariables, 15387 ConjunctsInSsa, 10135 ConjunctsInUnsatCore, 69 InterpolantComputations, 1 PerfectInterpolantSequences, 0/109480 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/gauss_sum.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_09-48-14-291.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gauss_sum.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_09-48-14-291.csv Completed graceful shutdown