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.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f [2018-10-04 12:18:16,461 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:18:16,464 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:18:16,475 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:18:16,476 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:18:16,477 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:18:16,478 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:18:16,480 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:18:16,481 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:18:16,482 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:18:16,483 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 12:18:16,483 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 12:18:16,484 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 12:18:16,485 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 12:18:16,486 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 12:18:16,487 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 12:18:16,488 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 12:18:16,490 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 12:18:16,492 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 12:18:16,494 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 12:18:16,495 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 12:18:16,496 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 12:18:16,498 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-04 12:18:16,507 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-04 12:18:16,534 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:18:16,537 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:18:16,538 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:18:16,538 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:18:16,539 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:18:16,539 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:18:16,539 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:18:16,540 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:18:16,541 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:18:16,541 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:18:16,541 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:18:16,541 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:18:16,542 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:18:16,542 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:18:16,542 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:18:16,542 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:18:16,542 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:18:16,543 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:18:16,544 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:18:16,544 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:18:16,545 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:18:16,545 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:18:16,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:18:16,545 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:18:16,545 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:18:16,546 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:18:16,546 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:18:16,546 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:18:16,546 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:18:16,546 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:18:16,615 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:18:16,629 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:18:16,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:18:16,638 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:18:16,639 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:18:16,640 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-04 12:18:16,640 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl' [2018-10-04 12:18:16,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:18:16,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:18:16,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:18:16,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:18:16,702 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:18:16,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:18:16" (1/1) ... [2018-10-04 12:18:16,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:18:16" (1/1) ... [2018-10-04 12:18:16,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:18:16,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:18:16,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:18:16,745 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:18:16,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:18:16" (1/1) ... [2018-10-04 12:18:16,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:18:16" (1/1) ... [2018-10-04 12:18:16,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:18:16" (1/1) ... [2018-10-04 12:18:16,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:18:16" (1/1) ... [2018-10-04 12:18:16,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:18:16" (1/1) ... [2018-10-04 12:18:16,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:18:16" (1/1) ... [2018-10-04 12:18:16,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:18:16" (1/1) ... [2018-10-04 12:18:16,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:18:16,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:18:16,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:18:16,771 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:18:16,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:18:16" (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 12:18:16,851 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-04 12:18:16,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 12:18:16,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 12:18:17,075 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 12:18:17,076 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:18:17 BoogieIcfgContainer [2018-10-04 12:18:17,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:18:17,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:18:17,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:18:17,081 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:18:17,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:18:16" (1/2) ... [2018-10-04 12:18:17,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454e327e and model type gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:18:17, skipping insertion in model container [2018-10-04 12:18:17,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:18:17" (2/2) ... [2018-10-04 12:18:17,085 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-04 12:18:17,095 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:18:17,103 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:18:17,152 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:18:17,153 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:18:17,153 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:18:17,153 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:18:17,153 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:18:17,154 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:18:17,154 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:18:17,154 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:18:17,154 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:18:17,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 12:18:17,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 12:18:17,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:17,178 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 12:18:17,179 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:17,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:17,186 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-10-04 12:18:17,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:17,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:17,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:17,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:17,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:17,266 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:17,267 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:17,267 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) [2018-10-04 12:18:17,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:18:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:18:17,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:17,404 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 12:18:17,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:18:17,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 12:18:17,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 12:18:17,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 12:18:17,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 12:18:17,477 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 12:18:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:17,521 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-04 12:18:17,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 12:18:17,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 12:18:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:17,535 INFO L225 Difference]: With dead ends: 9 [2018-10-04 12:18:17,535 INFO L226 Difference]: Without dead ends: 5 [2018-10-04 12:18:17,543 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 12:18:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-04 12:18:17,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-04 12:18:17,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-04 12:18:17,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-04 12:18:17,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-04 12:18:17,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:17,590 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-04 12:18:17,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 12:18:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-04 12:18:17,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 12:18:17,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:17,591 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 12:18:17,592 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:17,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:17,592 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-10-04 12:18:17,592 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:17,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:17,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:17,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:17,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:17,606 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:17,607 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:17,607 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) [2018-10-04 12:18:17,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:18:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:18:17,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:17,776 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:17,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-10-04 12:18:17,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 12:18:17,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 12:18:17,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-04 12:18:17,779 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-04 12:18:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:17,826 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-04 12:18:17,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 12:18:17,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-04 12:18:17,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:17,829 INFO L225 Difference]: With dead ends: 8 [2018-10-04 12:18:17,829 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 12:18:17,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-04 12:18:17,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 12:18:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 12:18:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 12:18:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 12:18:17,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-04 12:18:17,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:17,834 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 12:18:17,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 12:18:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 12:18:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 12:18:17,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:17,835 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-04 12:18:17,835 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:17,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:17,835 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-10-04 12:18:17,836 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:17,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:17,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:17,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:17,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:17,846 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:17,846 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:17,847 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:18:17,862 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:18:17,886 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:18:17,887 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:17,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:17,995 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:17,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-04 12:18:17,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 12:18:17,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 12:18:17,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-04 12:18:17,997 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-04 12:18:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:18,086 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-04 12:18:18,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:18:18,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-04 12:18:18,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:18,088 INFO L225 Difference]: With dead ends: 9 [2018-10-04 12:18:18,088 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 12:18:18,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-04 12:18:18,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 12:18:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 12:18:18,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 12:18:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 12:18:18,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-04 12:18:18,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:18,093 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 12:18:18,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 12:18:18,093 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 12:18:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 12:18:18,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:18,094 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-04 12:18:18,094 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:18,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:18,095 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-10-04 12:18:18,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:18,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:18,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:18,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:18,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:18,108 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:18,108 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:18,109 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:18:18,128 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:18:18,149 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 12:18:18,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:18,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:18,502 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 12:18:18,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:18,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-04 12:18:18,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 12:18:18,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 12:18:18,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-04 12:18:18,523 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-04 12:18:18,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:18,575 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-04 12:18:18,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 12:18:18,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-04 12:18:18,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:18,578 INFO L225 Difference]: With dead ends: 10 [2018-10-04 12:18:18,578 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 12:18:18,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-04 12:18:18,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 12:18:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-04 12:18:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-04 12:18:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-04 12:18:18,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-04 12:18:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:18,583 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-04 12:18:18,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 12:18:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-04 12:18:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 12:18:18,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:18,584 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-04 12:18:18,585 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:18,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:18,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-10-04 12:18:18,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:18,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:18,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:18,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:18,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:18,596 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:18,597 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:18,597 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 12:18:18,606 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:18:18,620 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:18:18,621 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:18,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:18,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:18,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-04 12:18:18,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 12:18:18,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 12:18:18,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-04 12:18:18,869 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-04 12:18:18,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:18,931 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 12:18:18,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 12:18:18,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-04 12:18:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:18,933 INFO L225 Difference]: With dead ends: 11 [2018-10-04 12:18:18,933 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 12:18:18,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-04 12:18:18,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 12:18:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 12:18:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 12:18:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 12:18:18,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-04 12:18:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:18,939 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 12:18:18,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 12:18:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 12:18:18,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 12:18:18,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:18,940 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-04 12:18:18,940 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:18,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:18,940 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-10-04 12:18:18,940 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:18,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:18,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:18,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:18,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:18,958 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:18,958 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:18,958 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 12:18:18,966 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:18:18,980 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-04 12:18:18,980 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:18,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:19,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:19,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-04 12:18:19,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 12:18:19,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 12:18:19,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-04 12:18:19,148 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-04 12:18:19,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:19,450 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-04 12:18:19,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 12:18:19,451 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-04 12:18:19,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:19,452 INFO L225 Difference]: With dead ends: 12 [2018-10-04 12:18:19,452 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 12:18:19,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-04 12:18:19,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 12:18:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 12:18:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 12:18:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 12:18:19,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-04 12:18:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:19,457 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 12:18:19,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 12:18:19,457 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 12:18:19,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 12:18:19,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:19,458 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-04 12:18:19,458 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:19,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:19,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-10-04 12:18:19,459 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:19,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:19,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:19,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:19,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:19,469 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:19,470 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:19,470 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:18:19,511 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:18:19,532 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-04 12:18:19,533 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:19,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:19,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:19,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-04 12:18:19,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 12:18:19,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 12:18:19,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-04 12:18:19,825 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-04 12:18:19,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:19,904 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 12:18:19,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 12:18:19,906 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-04 12:18:19,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:19,907 INFO L225 Difference]: With dead ends: 13 [2018-10-04 12:18:19,907 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 12:18:19,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-04 12:18:19,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 12:18:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 12:18:19,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 12:18:19,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 12:18:19,911 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-04 12:18:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:19,912 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 12:18:19,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 12:18:19,912 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 12:18:19,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 12:18:19,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:19,913 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-04 12:18:19,913 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:19,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:19,913 INFO L82 PathProgramCache]: Analyzing trace with hash -124817652, now seen corresponding path program 7 times [2018-10-04 12:18:19,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:19,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:19,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:19,914 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:19,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:19,924 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:19,925 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:19,925 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 12:18:19,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:18:19,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:20,127 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:20,150 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:20,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-04 12:18:20,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 12:18:20,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 12:18:20,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-04 12:18:20,152 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-04 12:18:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:20,242 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-04 12:18:20,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 12:18:20,243 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-04 12:18:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:20,244 INFO L225 Difference]: With dead ends: 14 [2018-10-04 12:18:20,244 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 12:18:20,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-04 12:18:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 12:18:20,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 12:18:20,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 12:18:20,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-04 12:18:20,250 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-04 12:18:20,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:20,250 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-04 12:18:20,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 12:18:20,250 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-04 12:18:20,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 12:18:20,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:20,251 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-04 12:18:20,251 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:20,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash 425621891, now seen corresponding path program 8 times [2018-10-04 12:18:20,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:20,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:20,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:20,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:20,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:20,261 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:20,262 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:20,262 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 12:18:20,272 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:18:20,287 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:18:20,287 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:20,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:20,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:20,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-04 12:18:20,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 12:18:20,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 12:18:20,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-04 12:18:20,530 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-04 12:18:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:20,686 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 12:18:20,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 12:18:20,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-04 12:18:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:20,688 INFO L225 Difference]: With dead ends: 15 [2018-10-04 12:18:20,688 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 12:18:20,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-04 12:18:20,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 12:18:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 12:18:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 12:18:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 12:18:20,693 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-04 12:18:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:20,693 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 12:18:20,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 12:18:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 12:18:20,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 12:18:20,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:20,694 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-04 12:18:20,694 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:20,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:20,695 INFO L82 PathProgramCache]: Analyzing trace with hash 309378540, now seen corresponding path program 9 times [2018-10-04 12:18:20,695 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:20,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:20,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:20,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:20,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:20,705 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:20,705 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:20,705 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 12:18:20,719 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:18:20,739 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-04 12:18:20,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:20,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:21,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:21,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-04 12:18:21,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 12:18:21,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 12:18:21,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-10-04 12:18:21,053 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-04 12:18:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:21,241 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-04 12:18:21,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 12:18:21,242 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-04 12:18:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:21,243 INFO L225 Difference]: With dead ends: 16 [2018-10-04 12:18:21,243 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 12:18:21,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-10-04 12:18:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 12:18:21,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 12:18:21,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 12:18:21,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-04 12:18:21,248 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-04 12:18:21,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:21,248 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-04 12:18:21,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 12:18:21,249 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-04 12:18:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 12:18:21,249 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:21,249 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-04 12:18:21,249 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:21,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:21,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1000801955, now seen corresponding path program 10 times [2018-10-04 12:18:21,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:21,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:21,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:21,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:21,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:21,260 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:21,260 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:21,260 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 12:18:21,269 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:18:21,284 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:18:21,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:21,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:21,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:21,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-04 12:18:21,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 12:18:21,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 12:18:21,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-10-04 12:18:21,491 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-04 12:18:21,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:21,628 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 12:18:21,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 12:18:21,635 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-04 12:18:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:21,636 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:18:21,636 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 12:18:21,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-10-04 12:18:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 12:18:21,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 12:18:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 12:18:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 12:18:21,641 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-04 12:18:21,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:21,641 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 12:18:21,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 12:18:21,641 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 12:18:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 12:18:21,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:21,642 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-04 12:18:21,642 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:21,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:21,643 INFO L82 PathProgramCache]: Analyzing trace with hash 960091340, now seen corresponding path program 11 times [2018-10-04 12:18:21,643 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:21,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:21,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:21,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:21,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:21,656 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:21,656 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:21,656 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 12:18:21,677 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:18:21,697 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 12:18:21,697 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:21,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:22,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:22,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-04 12:18:22,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 12:18:22,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 12:18:22,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-10-04 12:18:22,348 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-04 12:18:22,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:22,529 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-04 12:18:22,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 12:18:22,530 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-04 12:18:22,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:22,531 INFO L225 Difference]: With dead ends: 18 [2018-10-04 12:18:22,531 INFO L226 Difference]: Without dead ends: 16 [2018-10-04 12:18:22,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-10-04 12:18:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-04 12:18:22,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-04 12:18:22,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-04 12:18:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-04 12:18:22,536 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-04 12:18:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:22,537 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-04 12:18:22,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 12:18:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-04 12:18:22,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-04 12:18:22,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:22,538 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-04 12:18:22,538 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:22,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:22,538 INFO L82 PathProgramCache]: Analyzing trace with hash -301937725, now seen corresponding path program 12 times [2018-10-04 12:18:22,539 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:22,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:22,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:22,540 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:22,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:22,549 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:22,549 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:22,549 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 12:18:22,564 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:18:22,592 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 12:18:22,592 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:22,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:22,864 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:22,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-04 12:18:22,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 12:18:22,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 12:18:22,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-10-04 12:18:22,865 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-04 12:18:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:23,113 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 12:18:23,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 12:18:23,116 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-04 12:18:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:23,117 INFO L225 Difference]: With dead ends: 19 [2018-10-04 12:18:23,117 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 12:18:23,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-10-04 12:18:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 12:18:23,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 12:18:23,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 12:18:23,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 12:18:23,121 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-04 12:18:23,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:23,122 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 12:18:23,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 12:18:23,122 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 12:18:23,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 12:18:23,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:23,123 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-04 12:18:23,123 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:23,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:23,123 INFO L82 PathProgramCache]: Analyzing trace with hash -770133076, now seen corresponding path program 13 times [2018-10-04 12:18:23,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:23,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:23,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:23,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:23,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:23,134 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:23,134 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:23,134 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) [2018-10-04 12:18:23,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:18:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:18:23,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:23,564 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:23,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:23,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-04 12:18:23,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 12:18:23,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 12:18:23,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-10-04 12:18:23,595 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-04 12:18:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:23,782 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-04 12:18:23,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 12:18:23,783 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-04 12:18:23,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:23,784 INFO L225 Difference]: With dead ends: 20 [2018-10-04 12:18:23,784 INFO L226 Difference]: Without dead ends: 18 [2018-10-04 12:18:23,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-10-04 12:18:23,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-04 12:18:23,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-04 12:18:23,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-04 12:18:23,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-04 12:18:23,788 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-04 12:18:23,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:23,789 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-04 12:18:23,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 12:18:23,789 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-04 12:18:23,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-04 12:18:23,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:23,789 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-04 12:18:23,790 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:23,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:23,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1895680227, now seen corresponding path program 14 times [2018-10-04 12:18:23,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:23,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:23,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:23,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:23,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:23,800 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:23,801 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:23,801 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:18:23,825 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:18:23,847 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:18:23,847 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:23,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:24,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:24,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-04 12:18:24,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 12:18:24,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 12:18:24,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-10-04 12:18:24,440 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-04 12:18:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:24,701 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 12:18:24,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 12:18:24,704 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-04 12:18:24,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:24,704 INFO L225 Difference]: With dead ends: 21 [2018-10-04 12:18:24,705 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 12:18:24,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-10-04 12:18:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 12:18:24,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 12:18:24,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 12:18:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 12:18:24,709 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-04 12:18:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:24,709 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 12:18:24,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 12:18:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 12:18:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 12:18:24,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:24,710 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-04 12:18:24,711 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:24,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:24,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1363453300, now seen corresponding path program 15 times [2018-10-04 12:18:24,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:24,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:24,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:24,712 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:24,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:24,721 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:24,722 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:24,722 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 12:18:24,743 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:18:24,802 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-04 12:18:24,802 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:24,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:26,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:26,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-04 12:18:26,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 12:18:26,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 12:18:26,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-10-04 12:18:26,308 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-04 12:18:26,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:26,571 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-04 12:18:26,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 12:18:26,572 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-04 12:18:26,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:26,573 INFO L225 Difference]: With dead ends: 22 [2018-10-04 12:18:26,573 INFO L226 Difference]: Without dead ends: 20 [2018-10-04 12:18:26,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-10-04 12:18:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-04 12:18:26,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-04 12:18:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-04 12:18:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-04 12:18:26,580 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-04 12:18:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:26,581 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-04 12:18:26,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 12:18:26,582 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-04 12:18:26,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-04 12:18:26,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:26,582 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-04 12:18:26,582 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:26,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:26,583 INFO L82 PathProgramCache]: Analyzing trace with hash 682622467, now seen corresponding path program 16 times [2018-10-04 12:18:26,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:26,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:26,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:26,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:26,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:26,605 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:26,606 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:26,606 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 12:18:26,626 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:18:26,652 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:18:26,652 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:26,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:26,967 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:26,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-04 12:18:26,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 12:18:26,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 12:18:26,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-10-04 12:18:26,968 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-04 12:18:27,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:27,539 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 12:18:27,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 12:18:27,540 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-04 12:18:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:27,541 INFO L225 Difference]: With dead ends: 23 [2018-10-04 12:18:27,541 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 12:18:27,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-10-04 12:18:27,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 12:18:27,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 12:18:27,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 12:18:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 12:18:27,546 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-04 12:18:27,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:27,546 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 12:18:27,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 12:18:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 12:18:27,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 12:18:27,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:27,547 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-04 12:18:27,547 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:27,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:27,548 INFO L82 PathProgramCache]: Analyzing trace with hash -313538196, now seen corresponding path program 17 times [2018-10-04 12:18:27,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:27,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:27,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:27,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:27,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:27,558 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:27,558 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:27,559 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:18:27,571 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:18:27,601 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-04 12:18:27,601 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:27,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:27,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:27,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-04 12:18:27,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 12:18:27,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 12:18:27,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-10-04 12:18:27,949 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-04 12:18:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:28,250 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-04 12:18:28,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 12:18:28,251 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-04 12:18:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:28,252 INFO L225 Difference]: With dead ends: 24 [2018-10-04 12:18:28,252 INFO L226 Difference]: Without dead ends: 22 [2018-10-04 12:18:28,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-10-04 12:18:28,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-04 12:18:28,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-04 12:18:28,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-04 12:18:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-04 12:18:28,257 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-04 12:18:28,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:28,257 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-04 12:18:28,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 12:18:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-04 12:18:28,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-04 12:18:28,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:28,258 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-04 12:18:28,258 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:28,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:28,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1129747677, now seen corresponding path program 18 times [2018-10-04 12:18:28,259 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:28,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:28,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:28,260 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:28,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:28,268 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:28,268 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:28,269 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 12:18:28,289 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:18:28,333 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-04 12:18:28,334 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:28,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:28,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:28,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-04 12:18:28,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 12:18:28,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 12:18:28,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-10-04 12:18:28,845 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-04 12:18:29,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:29,156 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 12:18:29,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 12:18:29,157 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-04 12:18:29,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:29,158 INFO L225 Difference]: With dead ends: 25 [2018-10-04 12:18:29,158 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 12:18:29,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-10-04 12:18:29,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 12:18:29,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 12:18:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 12:18:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 12:18:29,164 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-04 12:18:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:29,164 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 12:18:29,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 12:18:29,165 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 12:18:29,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 12:18:29,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:29,165 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-04 12:18:29,166 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:29,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:29,166 INFO L82 PathProgramCache]: Analyzing trace with hash -662437812, now seen corresponding path program 19 times [2018-10-04 12:18:29,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:29,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:29,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:29,167 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:29,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:29,174 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:29,175 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:29,175 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 12:18:29,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:18:29,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:29,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:29,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-04 12:18:29,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 12:18:29,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 12:18:29,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-10-04 12:18:29,602 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-04 12:18:29,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:29,969 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-04 12:18:29,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 12:18:29,970 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-04 12:18:29,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:29,971 INFO L225 Difference]: With dead ends: 26 [2018-10-04 12:18:29,971 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 12:18:29,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-10-04 12:18:29,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 12:18:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-04 12:18:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-04 12:18:29,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-04 12:18:29,978 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-04 12:18:29,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:29,978 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-04 12:18:29,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 12:18:29,978 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-04 12:18:29,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-04 12:18:29,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:29,979 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-04 12:18:29,979 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:29,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:29,980 INFO L82 PathProgramCache]: Analyzing trace with hash 939266115, now seen corresponding path program 20 times [2018-10-04 12:18:29,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:29,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:29,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:29,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:29,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:29,989 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:29,989 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:29,989 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 12:18:30,008 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:18:30,035 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:18:30,035 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:30,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:30,345 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 12:18:30,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:30,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-04 12:18:30,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 12:18:30,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 12:18:30,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-10-04 12:18:30,367 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-04 12:18:30,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:30,826 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 12:18:30,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 12:18:30,826 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-04 12:18:30,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:30,827 INFO L225 Difference]: With dead ends: 27 [2018-10-04 12:18:30,827 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 12:18:30,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-10-04 12:18:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 12:18:30,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 12:18:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 12:18:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 12:18:30,833 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-04 12:18:30,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:30,833 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 12:18:30,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 12:18:30,833 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 12:18:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 12:18:30,835 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:30,835 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-04 12:18:30,835 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:30,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:30,836 INFO L82 PathProgramCache]: Analyzing trace with hash -947519700, now seen corresponding path program 21 times [2018-10-04 12:18:30,836 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:30,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:30,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:30,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:30,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:30,845 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:30,845 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:30,845 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 12:18:30,853 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:18:30,979 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-04 12:18:30,979 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:30,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:31,724 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:31,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-04 12:18:31,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 12:18:31,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 12:18:31,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-10-04 12:18:31,726 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-04 12:18:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:32,124 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-04 12:18:32,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 12:18:32,132 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-04 12:18:32,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:32,133 INFO L225 Difference]: With dead ends: 28 [2018-10-04 12:18:32,133 INFO L226 Difference]: Without dead ends: 26 [2018-10-04 12:18:32,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-10-04 12:18:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-04 12:18:32,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-04 12:18:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-04 12:18:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-04 12:18:32,137 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-04 12:18:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:32,138 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-04 12:18:32,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 12:18:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-04 12:18:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-04 12:18:32,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:32,138 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-04 12:18:32,139 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:32,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:32,139 INFO L82 PathProgramCache]: Analyzing trace with hash 691662179, now seen corresponding path program 22 times [2018-10-04 12:18:32,139 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:32,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:32,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:32,140 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:32,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:32,147 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:32,147 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:32,147 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:18:32,164 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:18:32,206 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:18:32,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:32,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:32,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:32,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-04 12:18:32,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 12:18:32,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 12:18:32,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-10-04 12:18:32,804 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-04 12:18:33,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:33,610 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 12:18:33,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 12:18:33,610 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-04 12:18:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:33,611 INFO L225 Difference]: With dead ends: 29 [2018-10-04 12:18:33,611 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 12:18:33,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-10-04 12:18:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 12:18:33,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 12:18:33,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 12:18:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 12:18:33,618 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-04 12:18:33,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:33,618 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 12:18:33,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 12:18:33,618 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 12:18:33,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 12:18:33,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:33,619 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-04 12:18:33,619 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:33,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:33,619 INFO L82 PathProgramCache]: Analyzing trace with hash -33307124, now seen corresponding path program 23 times [2018-10-04 12:18:33,619 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:33,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:33,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:33,620 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:33,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:33,627 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:33,627 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:33,627 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 12:18:33,647 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:18:33,683 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-04 12:18:33,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:33,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:34,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:34,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-04 12:18:34,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 12:18:34,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 12:18:34,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-10-04 12:18:34,272 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-04 12:18:34,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:34,883 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-04 12:18:34,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 12:18:34,883 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-04 12:18:34,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:34,884 INFO L225 Difference]: With dead ends: 30 [2018-10-04 12:18:34,884 INFO L226 Difference]: Without dead ends: 28 [2018-10-04 12:18:34,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-10-04 12:18:34,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-04 12:18:34,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-04 12:18:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-04 12:18:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-04 12:18:34,891 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-04 12:18:34,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:34,891 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-04 12:18:34,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 12:18:34,892 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-04 12:18:34,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-04 12:18:34,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:34,892 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-04 12:18:34,893 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:34,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:34,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1032519037, now seen corresponding path program 24 times [2018-10-04 12:18:34,893 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:34,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:34,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:34,894 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:34,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:34,900 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:34,901 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:34,901 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:18:34,918 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:18:34,980 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 12:18:34,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:34,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:35,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:35,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-04 12:18:35,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 12:18:35,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 12:18:35,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-10-04 12:18:35,492 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-04 12:18:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:35,984 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 12:18:35,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 12:18:35,985 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-04 12:18:35,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:35,986 INFO L225 Difference]: With dead ends: 31 [2018-10-04 12:18:35,986 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 12:18:35,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-10-04 12:18:35,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 12:18:35,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 12:18:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 12:18:35,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 12:18:35,993 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-04 12:18:35,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:35,993 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 12:18:35,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 12:18:35,993 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 12:18:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 12:18:35,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:35,994 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-04 12:18:35,995 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:35,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:35,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1943317268, now seen corresponding path program 25 times [2018-10-04 12:18:35,995 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:35,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:35,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:35,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:35,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:36,003 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:36,004 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:36,004 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:18:36,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:18:36,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:36,888 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:36,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-04 12:18:36,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 12:18:36,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 12:18:36,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-10-04 12:18:36,890 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-04 12:18:37,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:37,412 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-04 12:18:37,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 12:18:37,412 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-04 12:18:37,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:37,413 INFO L225 Difference]: With dead ends: 32 [2018-10-04 12:18:37,413 INFO L226 Difference]: Without dead ends: 30 [2018-10-04 12:18:37,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-10-04 12:18:37,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-04 12:18:37,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-04 12:18:37,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-04 12:18:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-04 12:18:37,418 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-04 12:18:37,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:37,419 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-04 12:18:37,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 12:18:37,419 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-04 12:18:37,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-04 12:18:37,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:37,420 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-04 12:18:37,420 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:37,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:37,420 INFO L82 PathProgramCache]: Analyzing trace with hash -113291357, now seen corresponding path program 26 times [2018-10-04 12:18:37,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:37,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:37,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:37,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:37,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:37,428 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:37,428 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:37,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:18:37,440 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:18:37,490 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:18:37,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:37,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:38,062 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:38,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-04 12:18:38,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 12:18:38,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 12:18:38,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-10-04 12:18:38,064 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-04 12:18:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:38,733 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 12:18:38,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 12:18:38,733 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-04 12:18:38,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:38,734 INFO L225 Difference]: With dead ends: 33 [2018-10-04 12:18:38,734 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 12:18:38,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-10-04 12:18:38,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 12:18:38,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 12:18:38,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 12:18:38,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 12:18:38,739 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-04 12:18:38,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:38,739 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 12:18:38,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 12:18:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 12:18:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 12:18:38,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:38,740 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-04 12:18:38,740 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:38,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:38,740 INFO L82 PathProgramCache]: Analyzing trace with hash 782937036, now seen corresponding path program 27 times [2018-10-04 12:18:38,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:38,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:38,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:38,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:38,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:38,747 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:38,747 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:38,747 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 12:18:38,760 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:18:39,066 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-04 12:18:39,066 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:39,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:39,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:39,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-04 12:18:39,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 12:18:39,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 12:18:39,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-10-04 12:18:39,698 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-04 12:18:40,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:40,282 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-04 12:18:40,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 12:18:40,283 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-04 12:18:40,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:40,284 INFO L225 Difference]: With dead ends: 34 [2018-10-04 12:18:40,284 INFO L226 Difference]: Without dead ends: 32 [2018-10-04 12:18:40,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-10-04 12:18:40,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-04 12:18:40,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-04 12:18:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-04 12:18:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-04 12:18:40,295 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-04 12:18:40,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:40,295 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-04 12:18:40,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 12:18:40,295 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-04 12:18:40,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-04 12:18:40,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:40,296 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-04 12:18:40,296 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:40,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:40,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1498753853, now seen corresponding path program 28 times [2018-10-04 12:18:40,297 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:40,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:40,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:40,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:40,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:40,311 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:40,312 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:40,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:18:40,323 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:18:40,370 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:18:40,370 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:40,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:40,946 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:40,966 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:40,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-04 12:18:40,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 12:18:40,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 12:18:40,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-10-04 12:18:40,967 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-04 12:18:41,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:41,787 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 12:18:41,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 12:18:41,788 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-04 12:18:41,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:41,789 INFO L225 Difference]: With dead ends: 35 [2018-10-04 12:18:41,789 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 12:18:41,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-10-04 12:18:41,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 12:18:41,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 12:18:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 12:18:41,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 12:18:41,797 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-04 12:18:41,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:41,797 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 12:18:41,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 12:18:41,797 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 12:18:41,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 12:18:41,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:41,798 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-04 12:18:41,798 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:41,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:41,799 INFO L82 PathProgramCache]: Analyzing trace with hash 783272620, now seen corresponding path program 29 times [2018-10-04 12:18:41,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:41,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:41,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:41,800 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:41,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:41,806 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:41,806 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:41,806 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 12:18:41,830 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:18:41,891 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-04 12:18:41,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:41,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:42,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:42,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-04 12:18:42,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 12:18:42,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 12:18:42,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-10-04 12:18:42,516 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-04 12:18:43,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:43,236 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-04 12:18:43,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 12:18:43,236 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-04 12:18:43,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:43,237 INFO L225 Difference]: With dead ends: 36 [2018-10-04 12:18:43,237 INFO L226 Difference]: Without dead ends: 34 [2018-10-04 12:18:43,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-10-04 12:18:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-04 12:18:43,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-04 12:18:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-04 12:18:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-04 12:18:43,244 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-04 12:18:43,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:43,245 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-04 12:18:43,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 12:18:43,245 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-04 12:18:43,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-04 12:18:43,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:43,245 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-04 12:18:43,245 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:43,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:43,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1488350749, now seen corresponding path program 30 times [2018-10-04 12:18:43,246 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:43,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:43,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:43,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:43,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:43,253 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:43,253 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:43,253 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 12:18:43,279 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:18:43,418 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-04 12:18:43,419 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:43,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:44,008 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:44,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-04 12:18:44,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 12:18:44,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 12:18:44,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-10-04 12:18:44,009 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-04 12:18:44,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:44,716 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 12:18:44,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 12:18:44,717 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-04 12:18:44,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:44,717 INFO L225 Difference]: With dead ends: 37 [2018-10-04 12:18:44,717 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 12:18:44,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-10-04 12:18:44,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 12:18:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 12:18:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 12:18:44,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 12:18:44,723 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-04 12:18:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:44,723 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 12:18:44,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 12:18:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 12:18:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 12:18:44,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:44,723 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-04 12:18:44,724 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:44,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:44,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1105768844, now seen corresponding path program 31 times [2018-10-04 12:18:44,724 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:44,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:44,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:44,725 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:44,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:44,731 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:44,732 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:44,732 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) [2018-10-04 12:18:44,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:18:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:18:44,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:45,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:45,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-04 12:18:45,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 12:18:45,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 12:18:45,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-10-04 12:18:45,445 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-04 12:18:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:46,181 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-04 12:18:46,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 12:18:46,181 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-04 12:18:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:46,182 INFO L225 Difference]: With dead ends: 38 [2018-10-04 12:18:46,182 INFO L226 Difference]: Without dead ends: 36 [2018-10-04 12:18:46,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-10-04 12:18:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-04 12:18:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-04 12:18:46,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-04 12:18:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-04 12:18:46,188 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-04 12:18:46,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:46,188 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-04 12:18:46,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 12:18:46,188 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-04 12:18:46,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-04 12:18:46,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:46,189 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-04 12:18:46,189 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:46,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:46,189 INFO L82 PathProgramCache]: Analyzing trace with hash -80902397, now seen corresponding path program 32 times [2018-10-04 12:18:46,190 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:46,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:46,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:46,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:46,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:46,197 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:46,197 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:46,197 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 12:18:46,206 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:18:46,262 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:18:46,263 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:46,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:47,211 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:47,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-04 12:18:47,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 12:18:47,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 12:18:47,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-10-04 12:18:47,213 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-04 12:18:48,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:48,070 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 12:18:48,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 12:18:48,071 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-04 12:18:48,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:48,071 INFO L225 Difference]: With dead ends: 39 [2018-10-04 12:18:48,071 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 12:18:48,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-10-04 12:18:48,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 12:18:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 12:18:48,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 12:18:48,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 12:18:48,077 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-04 12:18:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:48,078 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 12:18:48,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 12:18:48,078 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 12:18:48,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 12:18:48,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:48,078 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-04 12:18:48,079 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:48,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:48,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1786994796, now seen corresponding path program 33 times [2018-10-04 12:18:48,079 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:48,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:48,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:48,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:48,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:48,084 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:48,084 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:48,084 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 12:18:48,092 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:18:48,749 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-04 12:18:48,750 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:48,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:49,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:49,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-04 12:18:49,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 12:18:49,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 12:18:49,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-10-04 12:18:49,679 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-04 12:18:50,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:50,552 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-04 12:18:50,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 12:18:50,552 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-04 12:18:50,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:50,553 INFO L225 Difference]: With dead ends: 40 [2018-10-04 12:18:50,553 INFO L226 Difference]: Without dead ends: 38 [2018-10-04 12:18:50,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-10-04 12:18:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-04 12:18:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-04 12:18:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-04 12:18:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-04 12:18:50,559 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-04 12:18:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:50,559 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-04 12:18:50,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 12:18:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-04 12:18:50,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-04 12:18:50,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:50,559 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-04 12:18:50,560 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:50,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:50,560 INFO L82 PathProgramCache]: Analyzing trace with hash -437734365, now seen corresponding path program 34 times [2018-10-04 12:18:50,560 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:50,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:50,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:50,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:50,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:50,569 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:50,569 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:50,569 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 12:18:50,579 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:18:50,638 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:18:50,639 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:50,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:51,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:51,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-04 12:18:51,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 12:18:51,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 12:18:51,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-10-04 12:18:51,356 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-04 12:18:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:52,441 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 12:18:52,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 12:18:52,442 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-04 12:18:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:52,442 INFO L225 Difference]: With dead ends: 41 [2018-10-04 12:18:52,443 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 12:18:52,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-10-04 12:18:52,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 12:18:52,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 12:18:52,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 12:18:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 12:18:52,447 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-04 12:18:52,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:52,447 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 12:18:52,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 12:18:52,448 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 12:18:52,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 12:18:52,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:52,448 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-04 12:18:52,448 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:52,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:52,451 INFO L82 PathProgramCache]: Analyzing trace with hash -684861620, now seen corresponding path program 35 times [2018-10-04 12:18:52,451 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:52,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:52,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:52,452 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:52,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:52,459 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:52,459 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:52,459 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 12:18:52,473 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:18:52,558 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-04 12:18:52,559 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:52,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:54,444 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:54,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-04 12:18:54,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 12:18:54,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 12:18:54,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-10-04 12:18:54,446 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-04 12:18:55,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:55,478 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-04 12:18:55,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 12:18:55,479 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-04 12:18:55,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:55,480 INFO L225 Difference]: With dead ends: 42 [2018-10-04 12:18:55,480 INFO L226 Difference]: Without dead ends: 40 [2018-10-04 12:18:55,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-10-04 12:18:55,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-04 12:18:55,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-04 12:18:55,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-04 12:18:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-04 12:18:55,485 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-04 12:18:55,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:55,485 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-04 12:18:55,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 12:18:55,485 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-04 12:18:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-04 12:18:55,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:55,486 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-04 12:18:55,486 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:55,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:55,486 INFO L82 PathProgramCache]: Analyzing trace with hash 244128067, now seen corresponding path program 36 times [2018-10-04 12:18:55,486 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:55,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:55,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:55,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:55,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:55,494 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:55,494 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:55,494 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 12:18:55,508 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:18:55,713 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 12:18:55,713 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:55,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:56,556 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:56,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:56,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-04 12:18:56,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 12:18:56,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 12:18:56,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-10-04 12:18:56,578 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-04 12:18:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:57,800 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 12:18:57,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 12:18:57,801 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-04 12:18:57,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:57,802 INFO L225 Difference]: With dead ends: 43 [2018-10-04 12:18:57,802 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 12:18:57,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-10-04 12:18:57,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 12:18:57,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 12:18:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 12:18:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 12:18:57,807 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-04 12:18:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:57,808 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 12:18:57,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 12:18:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 12:18:57,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 12:18:57,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:57,809 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-04 12:18:57,809 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:57,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:57,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1021962708, now seen corresponding path program 37 times [2018-10-04 12:18:57,810 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:57,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:57,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:57,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:18:57,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:57,817 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:57,818 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:57,818 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 12:18:57,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:18:57,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:18:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:18:58,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:18:58,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-04 12:18:58,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 12:18:58,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 12:18:58,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-10-04 12:18:58,746 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-04 12:18:59,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:18:59,823 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-04 12:18:59,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 12:18:59,824 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-04 12:18:59,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:18:59,825 INFO L225 Difference]: With dead ends: 44 [2018-10-04 12:18:59,825 INFO L226 Difference]: Without dead ends: 42 [2018-10-04 12:18:59,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-10-04 12:18:59,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-04 12:18:59,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-04 12:18:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-04 12:18:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-04 12:18:59,830 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-04 12:18:59,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:18:59,830 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-04 12:18:59,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 12:18:59,831 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-04 12:18:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-04 12:18:59,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:18:59,831 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-04 12:18:59,831 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:18:59,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:18:59,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1616071069, now seen corresponding path program 38 times [2018-10-04 12:18:59,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:18:59,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:18:59,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:59,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:18:59,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:18:59,839 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:18:59,839 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:18:59,839 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:18:59,846 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:18:59,906 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:18:59,907 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:18:59,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:00,763 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:00,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-04 12:19:00,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 12:19:00,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 12:19:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-10-04 12:19:00,764 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-04 12:19:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:01,940 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 12:19:01,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 12:19:01,941 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-04 12:19:01,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:01,941 INFO L225 Difference]: With dead ends: 45 [2018-10-04 12:19:01,941 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 12:19:01,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-10-04 12:19:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 12:19:01,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 12:19:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 12:19:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 12:19:01,946 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-04 12:19:01,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:01,946 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 12:19:01,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 12:19:01,947 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 12:19:01,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 12:19:01,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:01,947 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-04 12:19:01,947 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:01,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:01,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1441406220, now seen corresponding path program 39 times [2018-10-04 12:19:01,948 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:01,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:01,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:01,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:01,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:01,954 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:01,954 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:01,954 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 12:19:01,970 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:19:03,390 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-04 12:19:03,390 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:03,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:04,279 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:04,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-04 12:19:04,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 12:19:04,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 12:19:04,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-10-04 12:19:04,280 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-04 12:19:05,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:05,449 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-04 12:19:05,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 12:19:05,450 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-04 12:19:05,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:05,451 INFO L225 Difference]: With dead ends: 46 [2018-10-04 12:19:05,451 INFO L226 Difference]: Without dead ends: 44 [2018-10-04 12:19:05,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-10-04 12:19:05,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-04 12:19:05,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-04 12:19:05,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-04 12:19:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-04 12:19:05,455 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-04 12:19:05,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:05,455 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-04 12:19:05,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 12:19:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-04 12:19:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-04 12:19:05,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:05,456 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-04 12:19:05,456 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:05,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:05,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1733921667, now seen corresponding path program 40 times [2018-10-04 12:19:05,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:05,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:05,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:05,457 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:05,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:05,464 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:05,465 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:05,465 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 12:19:05,477 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:19:05,572 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:19:05,572 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:05,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:06,686 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:06,706 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:06,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-04 12:19:06,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 12:19:06,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 12:19:06,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-10-04 12:19:06,708 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-04 12:19:08,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:08,213 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 12:19:08,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 12:19:08,213 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-04 12:19:08,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:08,214 INFO L225 Difference]: With dead ends: 47 [2018-10-04 12:19:08,214 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 12:19:08,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-10-04 12:19:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 12:19:08,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 12:19:08,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 12:19:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 12:19:08,219 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-04 12:19:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:08,219 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 12:19:08,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 12:19:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 12:19:08,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 12:19:08,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:08,220 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-04 12:19:08,220 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:08,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:08,220 INFO L82 PathProgramCache]: Analyzing trace with hash -2083001364, now seen corresponding path program 41 times [2018-10-04 12:19:08,220 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:08,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:08,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:08,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:08,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:08,227 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:08,228 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:08,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:19:08,238 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:19:08,334 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-04 12:19:08,334 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:08,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:09,372 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:09,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-04 12:19:09,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 12:19:09,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 12:19:09,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-10-04 12:19:09,373 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-04 12:19:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:10,655 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-04 12:19:10,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 12:19:10,656 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-04 12:19:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:10,657 INFO L225 Difference]: With dead ends: 48 [2018-10-04 12:19:10,657 INFO L226 Difference]: Without dead ends: 46 [2018-10-04 12:19:10,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-10-04 12:19:10,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-04 12:19:10,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-04 12:19:10,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-04 12:19:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-04 12:19:10,661 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-04 12:19:10,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:10,661 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-04 12:19:10,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 12:19:10,662 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-04 12:19:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-04 12:19:10,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:10,662 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-04 12:19:10,662 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:10,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:10,663 INFO L82 PathProgramCache]: Analyzing trace with hash -148531037, now seen corresponding path program 42 times [2018-10-04 12:19:10,663 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:10,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:10,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:10,663 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:10,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:10,668 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:10,668 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:10,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:19:10,675 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:19:11,150 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-04 12:19:11,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:11,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:13,067 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:13,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-04 12:19:13,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 12:19:13,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 12:19:13,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-10-04 12:19:13,068 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-04 12:19:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:14,510 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 12:19:14,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 12:19:14,511 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-04 12:19:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:14,511 INFO L225 Difference]: With dead ends: 49 [2018-10-04 12:19:14,511 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 12:19:14,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-10-04 12:19:14,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 12:19:14,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 12:19:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 12:19:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 12:19:14,517 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-04 12:19:14,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:14,517 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 12:19:14,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 12:19:14,517 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 12:19:14,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 12:19:14,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:14,517 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-04 12:19:14,518 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:14,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:14,518 INFO L82 PathProgramCache]: Analyzing trace with hash -309493044, now seen corresponding path program 43 times [2018-10-04 12:19:14,518 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:14,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:14,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:14,519 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:14,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:14,525 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:14,526 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:14,526 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 12:19:14,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:19:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:19:14,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:16,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:16,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-04 12:19:16,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 12:19:16,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 12:19:16,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-10-04 12:19:16,207 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-04 12:19:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:17,797 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-04 12:19:17,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 12:19:17,797 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-04 12:19:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:17,798 INFO L225 Difference]: With dead ends: 50 [2018-10-04 12:19:17,798 INFO L226 Difference]: Without dead ends: 48 [2018-10-04 12:19:17,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-10-04 12:19:17,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-04 12:19:17,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-04 12:19:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-04 12:19:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-04 12:19:17,803 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-04 12:19:17,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:17,803 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-04 12:19:17,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 12:19:17,804 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-04 12:19:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-04 12:19:17,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:17,804 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-04 12:19:17,804 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:17,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:17,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1004347965, now seen corresponding path program 44 times [2018-10-04 12:19:17,805 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:17,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:17,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:17,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:19:17,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:17,812 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:17,813 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:17,813 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) [2018-10-04 12:19:17,828 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:19:17,933 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:19:17,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:17,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:19,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:19,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-04 12:19:19,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 12:19:19,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 12:19:19,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-10-04 12:19:19,021 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-04 12:19:20,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:20,475 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 12:19:20,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 12:19:20,476 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-04 12:19:20,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:20,477 INFO L225 Difference]: With dead ends: 51 [2018-10-04 12:19:20,477 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 12:19:20,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-10-04 12:19:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 12:19:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 12:19:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 12:19:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 12:19:20,485 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-04 12:19:20,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:20,486 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 12:19:20,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 12:19:20,486 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 12:19:20,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 12:19:20,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:20,486 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-04 12:19:20,487 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:20,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:20,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1070014036, now seen corresponding path program 45 times [2018-10-04 12:19:20,487 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:20,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:20,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:20,488 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:20,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:20,495 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:20,495 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:20,495 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 12:19:20,505 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:19:23,111 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-04 12:19:23,111 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:23,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:24,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:24,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-04 12:19:24,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 12:19:24,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 12:19:24,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-10-04 12:19:24,296 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-04 12:19:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:25,802 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-04 12:19:25,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 12:19:25,802 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-04 12:19:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:25,803 INFO L225 Difference]: With dead ends: 52 [2018-10-04 12:19:25,803 INFO L226 Difference]: Without dead ends: 50 [2018-10-04 12:19:25,804 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-10-04 12:19:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-04 12:19:25,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-04 12:19:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-04 12:19:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-04 12:19:25,808 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-04 12:19:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:25,808 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-04 12:19:25,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 12:19:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-04 12:19:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-04 12:19:25,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:25,809 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-04 12:19:25,809 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:25,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:25,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1189305059, now seen corresponding path program 46 times [2018-10-04 12:19:25,810 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:25,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:25,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:25,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:25,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:25,817 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:25,818 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:25,818 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) [2018-10-04 12:19:25,832 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:19:25,960 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:19:25,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:25,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:27,246 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:27,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-04 12:19:27,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 12:19:27,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 12:19:27,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-10-04 12:19:27,247 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-04 12:19:28,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:28,961 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 12:19:28,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 12:19:28,962 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-04 12:19:28,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:28,963 INFO L225 Difference]: With dead ends: 53 [2018-10-04 12:19:28,963 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 12:19:28,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-10-04 12:19:28,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 12:19:28,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 12:19:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 12:19:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 12:19:28,968 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-04 12:19:28,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:28,968 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 12:19:28,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 12:19:28,968 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 12:19:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 12:19:28,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:28,969 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-04 12:19:28,969 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:28,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:28,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1786247028, now seen corresponding path program 47 times [2018-10-04 12:19:28,969 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:28,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:28,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:28,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:28,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:28,976 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:28,976 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:28,976 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 12:19:28,990 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:19:29,116 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-04 12:19:29,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:29,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:30,323 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:30,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-04 12:19:30,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 12:19:30,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 12:19:30,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-10-04 12:19:30,324 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-04 12:19:31,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:31,995 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-04 12:19:31,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 12:19:31,995 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-04 12:19:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:31,996 INFO L225 Difference]: With dead ends: 54 [2018-10-04 12:19:31,996 INFO L226 Difference]: Without dead ends: 52 [2018-10-04 12:19:31,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-10-04 12:19:31,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-04 12:19:32,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-04 12:19:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-04 12:19:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-04 12:19:32,002 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-04 12:19:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:32,002 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-04 12:19:32,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 12:19:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-04 12:19:32,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-04 12:19:32,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:32,003 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-04 12:19:32,003 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:32,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:32,004 INFO L82 PathProgramCache]: Analyzing trace with hash 460918787, now seen corresponding path program 48 times [2018-10-04 12:19:32,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:32,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:32,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:32,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:32,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:32,011 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:32,011 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:32,011 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 12:19:32,019 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:19:32,713 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 12:19:32,714 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:32,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:34,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:34,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:34,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-04 12:19:34,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 12:19:34,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 12:19:34,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-10-04 12:19:34,106 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-04 12:19:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:35,842 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 12:19:35,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 12:19:35,842 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-04 12:19:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:35,843 INFO L225 Difference]: With dead ends: 55 [2018-10-04 12:19:35,844 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 12:19:35,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-10-04 12:19:35,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 12:19:35,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 12:19:35,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 12:19:35,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 12:19:35,850 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-04 12:19:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:35,850 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 12:19:35,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 12:19:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 12:19:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 12:19:35,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:35,851 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-04 12:19:35,851 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:35,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:35,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1403582316, now seen corresponding path program 49 times [2018-10-04 12:19:35,851 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:35,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:35,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:35,852 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:35,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:35,857 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:35,858 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:35,858 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:19:35,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:19:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:19:35,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:37,298 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:37,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-04 12:19:37,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 12:19:37,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 12:19:37,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-10-04 12:19:37,299 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-04 12:19:39,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:39,354 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-04 12:19:39,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 12:19:39,355 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-04 12:19:39,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:39,356 INFO L225 Difference]: With dead ends: 56 [2018-10-04 12:19:39,356 INFO L226 Difference]: Without dead ends: 54 [2018-10-04 12:19:39,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-10-04 12:19:39,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-04 12:19:39,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-04 12:19:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-04 12:19:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-04 12:19:39,361 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-04 12:19:39,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:39,361 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-04 12:19:39,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 12:19:39,362 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-04 12:19:39,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-04 12:19:39,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:39,362 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-04 12:19:39,362 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:39,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:39,363 INFO L82 PathProgramCache]: Analyzing trace with hash 561380643, now seen corresponding path program 50 times [2018-10-04 12:19:39,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:39,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:39,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:39,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:19:39,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:39,371 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:39,371 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:39,371 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 12:19:39,386 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:19:39,519 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:19:39,519 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:39,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:40,906 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:40,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-04 12:19:40,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 12:19:40,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 12:19:40,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-10-04 12:19:40,907 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-04 12:19:42,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:42,917 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 12:19:42,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 12:19:42,917 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-04 12:19:42,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:42,918 INFO L225 Difference]: With dead ends: 57 [2018-10-04 12:19:42,918 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 12:19:42,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-10-04 12:19:42,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 12:19:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 12:19:42,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 12:19:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 12:19:42,921 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-04 12:19:42,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:42,922 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 12:19:42,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 12:19:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 12:19:42,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 12:19:42,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:42,922 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-04 12:19:42,923 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:42,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:42,923 INFO L82 PathProgramCache]: Analyzing trace with hash 222932556, now seen corresponding path program 51 times [2018-10-04 12:19:42,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:42,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:42,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:42,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:42,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:42,931 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:42,931 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:42,931 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 12:19:42,947 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:19:47,384 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-04 12:19:47,385 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:47,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:49,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:49,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:49,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-04 12:19:49,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 12:19:49,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 12:19:49,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-10-04 12:19:49,135 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-04 12:19:51,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:51,061 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-04 12:19:51,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 12:19:51,062 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-04 12:19:51,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:51,063 INFO L225 Difference]: With dead ends: 58 [2018-10-04 12:19:51,063 INFO L226 Difference]: Without dead ends: 56 [2018-10-04 12:19:51,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-10-04 12:19:51,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-04 12:19:51,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-04 12:19:51,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-04 12:19:51,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-04 12:19:51,069 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-04 12:19:51,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:51,069 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-04 12:19:51,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 12:19:51,069 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-04 12:19:51,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-04 12:19:51,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:51,070 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-04 12:19:51,070 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:51,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:51,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1679023549, now seen corresponding path program 52 times [2018-10-04 12:19:51,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:51,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:51,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:51,071 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:51,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:51,078 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:51,079 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:51,079 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 12:19:51,093 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:19:51,259 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:19:51,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:51,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:52,769 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:52,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-04 12:19:52,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 12:19:52,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 12:19:52,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-10-04 12:19:52,770 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-04 12:19:54,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:54,987 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 12:19:54,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 12:19:54,988 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-04 12:19:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:54,989 INFO L225 Difference]: With dead ends: 59 [2018-10-04 12:19:54,989 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 12:19:54,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-10-04 12:19:54,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 12:19:54,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 12:19:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 12:19:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 12:19:54,995 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-04 12:19:54,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:54,995 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 12:19:54,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 12:19:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 12:19:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 12:19:54,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:54,996 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-04 12:19:54,996 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:54,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:54,996 INFO L82 PathProgramCache]: Analyzing trace with hash -510120660, now seen corresponding path program 53 times [2018-10-04 12:19:54,996 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:54,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:54,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:54,997 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:54,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:55,004 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:55,005 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:55,005 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 12:19:55,018 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:19:55,170 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-04 12:19:55,171 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:19:55,176 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:19:56,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:19:56,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:19:56,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-04 12:19:56,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 12:19:56,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 12:19:56,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-10-04 12:19:56,803 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-04 12:19:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:19:59,005 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-04 12:19:59,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 12:19:59,005 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-04 12:19:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:19:59,006 INFO L225 Difference]: With dead ends: 60 [2018-10-04 12:19:59,006 INFO L226 Difference]: Without dead ends: 58 [2018-10-04 12:19:59,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-10-04 12:19:59,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-04 12:19:59,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-04 12:19:59,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-04 12:19:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-04 12:19:59,011 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-04 12:19:59,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:19:59,011 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-04 12:19:59,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 12:19:59,011 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-04 12:19:59,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-04 12:19:59,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:19:59,011 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-04 12:19:59,012 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:19:59,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:19:59,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1366130531, now seen corresponding path program 54 times [2018-10-04 12:19:59,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:19:59,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:19:59,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:59,013 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:19:59,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:19:59,019 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:19:59,020 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:19:59,020 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 12:19:59,030 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:20:00,397 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-04 12:20:00,397 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:20:00,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:20:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:20:01,999 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:20:01,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-04 12:20:02,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 12:20:02,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 12:20:02,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-10-04 12:20:02,000 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-04 12:20:04,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:20:04,335 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 12:20:04,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 12:20:04,335 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-04 12:20:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:20:04,336 INFO L225 Difference]: With dead ends: 61 [2018-10-04 12:20:04,336 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 12:20:04,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-10-04 12:20:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 12:20:04,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 12:20:04,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 12:20:04,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 12:20:04,341 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-04 12:20:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:20:04,341 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 12:20:04,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 12:20:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 12:20:04,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 12:20:04,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:20:04,342 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-04 12:20:04,342 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:20:04,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:20:04,343 INFO L82 PathProgramCache]: Analyzing trace with hash -599624692, now seen corresponding path program 55 times [2018-10-04 12:20:04,343 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:20:04,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:20:04,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:04,344 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:20:04,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:04,350 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:20:04,351 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:20:04,351 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 12:20:04,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:20:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:20:04,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:20:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:20:06,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:20:06,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-04 12:20:06,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 12:20:06,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 12:20:06,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-10-04 12:20:06,180 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-04 12:20:08,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:20:08,448 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-04 12:20:08,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 12:20:08,448 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-04 12:20:08,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:20:08,449 INFO L225 Difference]: With dead ends: 62 [2018-10-04 12:20:08,449 INFO L226 Difference]: Without dead ends: 60 [2018-10-04 12:20:08,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-10-04 12:20:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-04 12:20:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-04 12:20:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-04 12:20:08,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-04 12:20:08,453 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-04 12:20:08,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:20:08,454 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-04 12:20:08,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 12:20:08,454 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-04 12:20:08,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-04 12:20:08,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:20:08,454 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-04 12:20:08,454 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:20:08,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:20:08,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1408494461, now seen corresponding path program 56 times [2018-10-04 12:20:08,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:20:08,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:20:08,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:08,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:20:08,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:08,463 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:20:08,463 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:20:08,464 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) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:20:08,474 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:20:08,603 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:20:08,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:20:08,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:20:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:20:10,406 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:20:10,406 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-10-04 12:20:10,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 12:20:10,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 12:20:10,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-10-04 12:20:10,407 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-04 12:20:12,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:20:12,751 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 12:20:12,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 12:20:12,751 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-04 12:20:12,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:20:12,752 INFO L225 Difference]: With dead ends: 63 [2018-10-04 12:20:12,752 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 12:20:12,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-10-04 12:20:12,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 12:20:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 12:20:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 12:20:12,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 12:20:12,758 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-04 12:20:12,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:20:12,759 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 12:20:12,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 12:20:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 12:20:12,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 12:20:12,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:20:12,760 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-04 12:20:12,760 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:20:12,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:20:12,760 INFO L82 PathProgramCache]: Analyzing trace with hash -713653524, now seen corresponding path program 57 times [2018-10-04 12:20:12,760 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:20:12,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:20:12,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:12,761 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:20:12,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:12,768 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:20:12,768 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:20:12,768 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 12:20:12,782 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:20:20,570 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-04 12:20:20,570 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:20:20,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:20:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:20:22,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:20:22,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-10-04 12:20:22,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 12:20:22,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 12:20:22,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-10-04 12:20:22,272 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-04 12:20:24,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:20:24,849 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-04 12:20:24,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 12:20:24,849 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-04 12:20:24,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:20:24,850 INFO L225 Difference]: With dead ends: 64 [2018-10-04 12:20:24,850 INFO L226 Difference]: Without dead ends: 62 [2018-10-04 12:20:24,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-10-04 12:20:24,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-04 12:20:24,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-04 12:20:24,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-04 12:20:24,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-04 12:20:24,856 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-04 12:20:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:20:24,856 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-04 12:20:24,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 12:20:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-04 12:20:24,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-04 12:20:24,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:20:24,856 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-04 12:20:24,857 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:20:24,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:20:24,857 INFO L82 PathProgramCache]: Analyzing trace with hash -648420957, now seen corresponding path program 58 times [2018-10-04 12:20:24,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:20:24,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:20:24,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:24,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:20:24,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:24,865 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:20:24,865 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:20:24,865 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 12:20:24,879 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:20:25,025 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:20:25,025 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:20:25,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:20:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:20:26,902 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:20:26,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-04 12:20:26,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 12:20:26,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 12:20:26,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-10-04 12:20:26,903 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-04 12:20:29,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:20:29,547 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 12:20:29,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 12:20:29,548 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-04 12:20:29,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:20:29,549 INFO L225 Difference]: With dead ends: 65 [2018-10-04 12:20:29,549 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 12:20:29,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-10-04 12:20:29,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 12:20:29,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 12:20:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 12:20:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 12:20:29,554 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-04 12:20:29,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:20:29,554 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 12:20:29,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 12:20:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 12:20:29,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 12:20:29,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:20:29,555 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-04 12:20:29,555 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:20:29,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:20:29,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1373788620, now seen corresponding path program 59 times [2018-10-04 12:20:29,555 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:20:29,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:20:29,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:29,556 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:20:29,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:29,563 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:20:29,563 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:20:29,563 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 12:20:29,580 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:20:29,768 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-04 12:20:29,768 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:20:29,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:20:32,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:20:32,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:20:32,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-10-04 12:20:32,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 12:20:32,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 12:20:32,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-10-04 12:20:32,401 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-04 12:20:35,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:20:35,126 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-04 12:20:35,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 12:20:35,127 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-04 12:20:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:20:35,127 INFO L225 Difference]: With dead ends: 66 [2018-10-04 12:20:35,127 INFO L226 Difference]: Without dead ends: 64 [2018-10-04 12:20:35,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-10-04 12:20:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-04 12:20:35,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-04 12:20:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-04 12:20:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-04 12:20:35,133 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-04 12:20:35,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:20:35,133 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-04 12:20:35,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 12:20:35,133 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-04 12:20:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-04 12:20:35,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:20:35,133 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-04 12:20:35,133 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:20:35,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:20:35,134 INFO L82 PathProgramCache]: Analyzing trace with hash -362223933, now seen corresponding path program 60 times [2018-10-04 12:20:35,134 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:20:35,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:20:35,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:35,135 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:20:35,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:35,141 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:20:35,141 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:20:35,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:20:35,156 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:20:37,077 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 12:20:37,078 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:20:37,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:20:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:20:38,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:20:38,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-04 12:20:38,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 12:20:38,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 12:20:38,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-10-04 12:20:38,942 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-04 12:20:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:20:41,714 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 12:20:41,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 12:20:41,715 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-04 12:20:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:20:41,716 INFO L225 Difference]: With dead ends: 67 [2018-10-04 12:20:41,716 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 12:20:41,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-10-04 12:20:41,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 12:20:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 12:20:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 12:20:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 12:20:41,721 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-04 12:20:41,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:20:41,721 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 12:20:41,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 12:20:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 12:20:41,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 12:20:41,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:20:41,721 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-04 12:20:41,722 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:20:41,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:20:41,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1655961772, now seen corresponding path program 61 times [2018-10-04 12:20:41,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:20:41,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:20:41,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:41,723 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:20:41,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:41,728 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:20:41,729 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:20:41,729 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 12:20:41,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:20:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:20:41,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:20:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:20:43,876 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:20:43,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-04 12:20:43,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 12:20:43,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 12:20:43,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-10-04 12:20:43,878 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-04 12:20:46,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:20:46,708 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-04 12:20:46,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 12:20:46,709 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-04 12:20:46,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:20:46,710 INFO L225 Difference]: With dead ends: 68 [2018-10-04 12:20:46,710 INFO L226 Difference]: Without dead ends: 66 [2018-10-04 12:20:46,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-10-04 12:20:46,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-04 12:20:46,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-04 12:20:46,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-04 12:20:46,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-04 12:20:46,715 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-04 12:20:46,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:20:46,715 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-04 12:20:46,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 12:20:46,715 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-04 12:20:46,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-04 12:20:46,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:20:46,715 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-04 12:20:46,716 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:20:46,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:20:46,716 INFO L82 PathProgramCache]: Analyzing trace with hash -204790813, now seen corresponding path program 62 times [2018-10-04 12:20:46,716 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:20:46,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:20:46,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:46,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:20:46,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:46,723 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:20:46,723 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:20:46,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:20:46,743 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:20:46,911 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:20:46,912 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:20:46,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:20:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:20:48,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:20:48,905 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-04 12:20:48,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 12:20:48,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 12:20:48,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-10-04 12:20:48,906 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-04 12:20:51,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:20:51,900 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 12:20:51,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 12:20:51,900 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-04 12:20:51,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:20:51,901 INFO L225 Difference]: With dead ends: 69 [2018-10-04 12:20:51,901 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 12:20:51,902 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-10-04 12:20:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 12:20:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 12:20:51,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 12:20:51,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 12:20:51,907 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-04 12:20:51,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:20:51,907 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 12:20:51,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 12:20:51,908 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 12:20:51,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 12:20:51,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:20:51,908 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-04 12:20:51,909 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:20:51,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:20:51,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2053546100, now seen corresponding path program 63 times [2018-10-04 12:20:51,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:20:51,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:20:51,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:51,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:20:51,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:20:51,917 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:20:51,917 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:20:51,917 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:20:51,929 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:21:04,891 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-04 12:21:04,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:21:04,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:21:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:21:07,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:21:07,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-04 12:21:07,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 12:21:07,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 12:21:07,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-10-04 12:21:07,005 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-04 12:21:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:21:10,134 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-04 12:21:10,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 12:21:10,134 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-04 12:21:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:21:10,134 INFO L225 Difference]: With dead ends: 70 [2018-10-04 12:21:10,135 INFO L226 Difference]: Without dead ends: 68 [2018-10-04 12:21:10,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-10-04 12:21:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-04 12:21:10,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-04 12:21:10,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-04 12:21:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-04 12:21:10,139 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-04 12:21:10,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:21:10,139 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-04 12:21:10,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 12:21:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-04 12:21:10,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-04 12:21:10,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:21:10,140 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-04 12:21:10,140 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:21:10,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:21:10,140 INFO L82 PathProgramCache]: Analyzing trace with hash 764582147, now seen corresponding path program 64 times [2018-10-04 12:21:10,140 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:21:10,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:21:10,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:10,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:21:10,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:10,148 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:21:10,148 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:21:10,149 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 12:21:10,161 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:21:10,394 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:21:10,394 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:21:10,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:21:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:21:12,605 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:21:12,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-04 12:21:12,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 12:21:12,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 12:21:12,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-10-04 12:21:12,606 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-04 12:21:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:21:15,834 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 12:21:15,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 12:21:15,835 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-04 12:21:15,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:21:15,835 INFO L225 Difference]: With dead ends: 71 [2018-10-04 12:21:15,836 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 12:21:15,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-10-04 12:21:15,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 12:21:15,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 12:21:15,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 12:21:15,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 12:21:15,841 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-04 12:21:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:21:15,842 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 12:21:15,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 12:21:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 12:21:15,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 12:21:15,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:21:15,842 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-04 12:21:15,843 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:21:15,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:21:15,843 INFO L82 PathProgramCache]: Analyzing trace with hash -2067755412, now seen corresponding path program 65 times [2018-10-04 12:21:15,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:21:15,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:21:15,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:15,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:21:15,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:15,850 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:21:15,850 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:21:15,850 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 12:21:15,858 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:21:16,131 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-04 12:21:16,132 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:21:16,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:21:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:21:18,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:21:18,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-04 12:21:18,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 12:21:18,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 12:21:18,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-10-04 12:21:18,293 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-04 12:21:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:21:21,508 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-04 12:21:21,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 12:21:21,508 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-04 12:21:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:21:21,508 INFO L225 Difference]: With dead ends: 72 [2018-10-04 12:21:21,509 INFO L226 Difference]: Without dead ends: 70 [2018-10-04 12:21:21,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-10-04 12:21:21,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-04 12:21:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-04 12:21:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-04 12:21:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-04 12:21:21,514 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-04 12:21:21,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:21:21,514 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-04 12:21:21,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 12:21:21,515 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-04 12:21:21,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-04 12:21:21,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:21:21,515 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-04 12:21:21,515 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:21:21,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:21:21,515 INFO L82 PathProgramCache]: Analyzing trace with hash 324093475, now seen corresponding path program 66 times [2018-10-04 12:21:21,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:21:21,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:21:21,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:21,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:21:21,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:21,523 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:21:21,523 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:21:21,523 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 12:21:21,536 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:21:24,971 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-04 12:21:24,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:21:24,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:21:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:21:28,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:21:28,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-04 12:21:28,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 12:21:28,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 12:21:28,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-10-04 12:21:28,694 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-04 12:21:32,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:21:32,009 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 12:21:32,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 12:21:32,010 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-04 12:21:32,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:21:32,011 INFO L225 Difference]: With dead ends: 73 [2018-10-04 12:21:32,011 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 12:21:32,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-10-04 12:21:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 12:21:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 12:21:32,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 12:21:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 12:21:32,016 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-04 12:21:32,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:21:32,016 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 12:21:32,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 12:21:32,016 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 12:21:32,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 12:21:32,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:21:32,017 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-04 12:21:32,017 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:21:32,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:21:32,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1456964940, now seen corresponding path program 67 times [2018-10-04 12:21:32,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:21:32,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:21:32,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:32,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:21:32,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:32,024 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:21:32,024 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:21:32,024 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 12:21:32,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:21:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:21:32,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:21:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:21:34,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:21:34,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-10-04 12:21:34,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 12:21:34,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 12:21:34,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-10-04 12:21:34,703 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-04 12:21:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:21:39,368 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-04 12:21:39,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 12:21:39,376 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-04 12:21:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:21:39,377 INFO L225 Difference]: With dead ends: 74 [2018-10-04 12:21:39,377 INFO L226 Difference]: Without dead ends: 72 [2018-10-04 12:21:39,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-10-04 12:21:39,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-04 12:21:39,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-04 12:21:39,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-04 12:21:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-04 12:21:39,381 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-04 12:21:39,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:21:39,381 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-04 12:21:39,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 12:21:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-04 12:21:39,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-04 12:21:39,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:21:39,381 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-04 12:21:39,382 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:21:39,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:21:39,382 INFO L82 PathProgramCache]: Analyzing trace with hash -2078725309, now seen corresponding path program 68 times [2018-10-04 12:21:39,382 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:21:39,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:21:39,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:39,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:21:39,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:39,390 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:21:39,390 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:21:39,390 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 12:21:39,405 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:21:39,616 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:21:39,617 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:21:39,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:21:42,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:21:42,252 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:21:42,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-10-04 12:21:42,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 12:21:42,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 12:21:42,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-10-04 12:21:42,253 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-04 12:21:45,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:21:45,715 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 12:21:45,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 12:21:45,716 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-04 12:21:45,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:21:45,716 INFO L225 Difference]: With dead ends: 75 [2018-10-04 12:21:45,716 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 12:21:45,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-10-04 12:21:45,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 12:21:45,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 12:21:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 12:21:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 12:21:45,720 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-04 12:21:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:21:45,720 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 12:21:45,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 12:21:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 12:21:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 12:21:45,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:21:45,721 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-04 12:21:45,721 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:21:45,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:21:45,721 INFO L82 PathProgramCache]: Analyzing trace with hash -15973332, now seen corresponding path program 69 times [2018-10-04 12:21:45,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:21:45,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:21:45,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:45,722 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:21:45,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:21:45,729 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:21:45,730 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:21:45,730 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 12:21:45,739 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:22:05,979 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-04 12:22:05,979 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:22:05,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:22:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:22:08,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:22:08,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-04 12:22:08,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 12:22:08,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 12:22:08,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-10-04 12:22:08,796 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-04 12:22:12,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:22:12,792 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-04 12:22:12,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 12:22:12,792 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-04 12:22:12,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:22:12,793 INFO L225 Difference]: With dead ends: 76 [2018-10-04 12:22:12,793 INFO L226 Difference]: Without dead ends: 74 [2018-10-04 12:22:12,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-10-04 12:22:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-04 12:22:12,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-04 12:22:12,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-04 12:22:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-04 12:22:12,801 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-04 12:22:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:22:12,801 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-04 12:22:12,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 12:22:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-04 12:22:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-04 12:22:12,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:22:12,802 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-04 12:22:12,802 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:22:12,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:22:12,802 INFO L82 PathProgramCache]: Analyzing trace with hash -495171485, now seen corresponding path program 70 times [2018-10-04 12:22:12,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:22:12,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:22:12,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:22:12,803 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:22:12,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:22:12,811 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:22:12,812 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:22:12,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:22:12,827 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:22:13,206 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:22:13,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:22:13,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:22:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:22:15,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:22:15,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2018-10-04 12:22:15,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 12:22:15,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 12:22:15,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-10-04 12:22:15,756 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-04 12:22:19,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:22:19,559 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 12:22:19,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 12:22:19,560 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-04 12:22:19,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:22:19,561 INFO L225 Difference]: With dead ends: 77 [2018-10-04 12:22:19,561 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 12:22:19,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-10-04 12:22:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 12:22:19,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 12:22:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 12:22:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 12:22:19,568 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-04 12:22:19,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:22:19,568 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 12:22:19,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 12:22:19,568 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 12:22:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 12:22:19,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:22:19,569 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-04 12:22:19,569 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:22:19,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:22:19,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1829554956, now seen corresponding path program 71 times [2018-10-04 12:22:19,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:22:19,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:22:19,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:22:19,570 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:22:19,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:22:19,577 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:22:19,577 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:22:19,577 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:22:19,591 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:22:19,944 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-04 12:22:19,944 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:22:19,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:22:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:22:22,749 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:22:22,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-04 12:22:22,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 12:22:22,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 12:22:22,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-10-04 12:22:22,750 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-04 12:22:26,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:22:26,441 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-04 12:22:26,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 12:22:26,442 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-04 12:22:26,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:22:26,443 INFO L225 Difference]: With dead ends: 78 [2018-10-04 12:22:26,443 INFO L226 Difference]: Without dead ends: 76 [2018-10-04 12:22:26,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-10-04 12:22:26,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-04 12:22:26,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-04 12:22:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-04 12:22:26,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-04 12:22:26,450 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-04 12:22:26,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:22:26,450 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-04 12:22:26,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 12:22:26,450 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-04 12:22:26,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-04 12:22:26,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:22:26,451 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-04 12:22:26,451 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:22:26,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:22:26,452 INFO L82 PathProgramCache]: Analyzing trace with hash 881630595, now seen corresponding path program 72 times [2018-10-04 12:22:26,452 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:22:26,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:22:26,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:22:26,453 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:22:26,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:22:26,460 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:22:26,460 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:22:26,460 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:22:26,474 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:22:30,918 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 12:22:30,918 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:22:30,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:22:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:22:33,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:22:33,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2018-10-04 12:22:33,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 12:22:33,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 12:22:33,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-10-04 12:22:33,799 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. Received shutdown request... [2018-10-04 12:22:34,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 12:22:34,096 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 12:22:34,103 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 12:22:34,104 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 12:22:34 BoogieIcfgContainer [2018-10-04 12:22:34,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 12:22:34,105 INFO L168 Benchmark]: Toolchain (without parser) took 257405.39 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 48.8 MB). Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -14.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 7.1 GB. [2018-10-04 12:22:34,106 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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 12:22:34,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.10 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 12:22:34,107 INFO L168 Benchmark]: Boogie Preprocessor took 25.61 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 12:22:34,107 INFO L168 Benchmark]: RCFGBuilder took 305.39 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 12:22:34,108 INFO L168 Benchmark]: TraceAbstraction took 257026.62 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 48.8 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -36.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2018-10-04 12:22:34,110 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 0.22 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 43.10 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.61 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 305.39 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 257026.62 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 48.8 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -36.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 46). Cancelled while BasicCegarLoop was constructing difference of abstraction (76states) and FLOYD_HOARE automaton (currently 8 states, 75 states before enhancement), while ReachableStatesComputation was computing reachable states (6 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 256.9s OverallTime, 73 OverallIterations, 72 TraceHistogramMax, 100.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 217 SDtfs, 0 SDslu, 2628 SDs, 0 SdLazy, 132713 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 84.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2774 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2701 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=72, 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: 0.3s AutomataMinimizationTime, 72 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 67.7s SatisfiabilityAnalysisTime, 83.8s InterpolantComputationTime, 2847 NumberOfCodeBlocks, 2847 NumberOfCodeBlocksAsserted, 787 NumberOfCheckSat, 2774 ConstructedInterpolants, 0 QuantifiedInterpolants, 957281 SizeOfPredicates, 218 NumberOfNonLiveVariables, 14527 ConjunctsInSsa, 10947 ConjunctsInUnsatCore, 73 InterpolantComputations, 1 PerfectInterpolantSequences, 0/64824 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.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_12-22-34-119.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gauss_sum.i_3.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_12-22-34-119.csv Completed graceful shutdown