java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f-m [2018-10-04 14:28:25,423 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 14:28:25,425 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 14:28:25,442 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 14:28:25,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 14:28:25,445 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 14:28:25,446 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 14:28:25,448 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 14:28:25,450 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 14:28:25,451 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 14:28:25,454 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 14:28:25,455 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 14:28:25,456 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 14:28:25,456 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 14:28:25,459 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 14:28:25,467 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 14:28:25,468 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 14:28:25,471 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 14:28:25,474 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 14:28:25,476 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 14:28:25,477 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 14:28:25,480 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 14:28:25,484 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-04 14:28:25,498 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 14:28:25,527 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 14:28:25,527 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 14:28:25,528 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 14:28:25,528 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 14:28:25,529 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 14:28:25,530 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 14:28:25,530 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 14:28:25,530 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 14:28:25,530 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 14:28:25,530 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 14:28:25,531 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 14:28:25,531 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 14:28:25,531 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 14:28:25,531 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 14:28:25,531 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 14:28:25,532 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 14:28:25,532 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 14:28:25,532 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 14:28:25,533 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 14:28:25,533 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 14:28:25,533 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 14:28:25,533 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 14:28:25,533 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 14:28:25,534 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 14:28:25,534 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 14:28:25,534 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 14:28:25,534 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 14:28:25,534 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 14:28:25,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 14:28:25,535 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 14:28:25,535 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 14:28:25,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 14:28:25,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 14:28:25,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 14:28:25,628 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 14:28:25,628 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 14:28:25,629 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl [2018-10-04 14:28:25,630 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/gauss_sum.i_3.bpl' [2018-10-04 14:28:25,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 14:28:25,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 14:28:25,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 14:28:25,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 14:28:25,681 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 14:28:25,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:28:25" (1/1) ... [2018-10-04 14:28:25,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:28:25" (1/1) ... [2018-10-04 14:28:25,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 14:28:25,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 14:28:25,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 14:28:25,719 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 14:28:25,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:28:25" (1/1) ... [2018-10-04 14:28:25,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:28:25" (1/1) ... [2018-10-04 14:28:25,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:28:25" (1/1) ... [2018-10-04 14:28:25,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:28:25" (1/1) ... [2018-10-04 14:28:25,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:28:25" (1/1) ... [2018-10-04 14:28:25,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:28:25" (1/1) ... [2018-10-04 14:28:25,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:28:25" (1/1) ... [2018-10-04 14:28:25,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 14:28:25,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 14:28:25,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 14:28:25,739 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 14:28:25,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:28:25" (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 14:28:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 14:28:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 14:28:25,979 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 14:28:25,980 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:28:25 BoogieIcfgContainer [2018-10-04 14:28:25,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 14:28:25,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 14:28:25,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 14:28:25,989 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 14:28:25,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:28:25" (1/2) ... [2018-10-04 14:28:25,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87a013f and model type gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:28:25, skipping insertion in model container [2018-10-04 14:28:25,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:28:25" (2/2) ... [2018-10-04 14:28:25,993 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i_3.bpl [2018-10-04 14:28:26,005 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 14:28:26,012 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 14:28:26,063 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 14:28:26,064 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 14:28:26,065 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 14:28:26,065 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 14:28:26,065 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 14:28:26,065 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 14:28:26,065 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 14:28:26,066 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 14:28:26,066 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 14:28:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-04 14:28:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 14:28:26,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:26,088 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 14:28:26,090 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:26,096 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:26,097 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-04 14:28:26,099 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:26,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:26,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:26,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:26,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:26,194 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:26,194 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:26,195 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:28:26,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:26,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:26,391 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 14:28:26,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 14:28:26,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 14:28:26,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 14:28:26,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 14:28:26,446 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:26,448 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-04 14:28:26,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:26,511 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-04 14:28:26,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 14:28:26,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-04 14:28:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:26,525 INFO L225 Difference]: With dead ends: 11 [2018-10-04 14:28:26,525 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 14:28:26,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 1 [2018-10-04 14:28:26,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 14:28:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 14:28:26,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 14:28:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 14:28:26,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-04 14:28:26,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:26,565 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 14:28:26,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 14:28:26,566 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 14:28:26,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 14:28:26,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:26,567 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-04 14:28:26,567 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:26,567 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:26,568 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-04 14:28:26,568 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:26,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:26,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:26,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:26,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:26,577 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:26,578 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:26,578 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:28:26,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:26,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:26,811 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:26,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-10-04 14:28:26,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 14:28:26,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 14:28:26,814 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:26,814 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-04 14:28:26,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:26,858 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 14:28:26,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 14:28:26,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-04 14:28:26,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:26,859 INFO L225 Difference]: With dead ends: 11 [2018-10-04 14:28:26,859 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 14:28:26,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-04 14:28:26,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 14:28:26,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 14:28:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 14:28:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 14:28:26,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-04 14:28:26,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:26,865 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 14:28:26,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 14:28:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 14:28:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 14:28:26,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:26,866 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-04 14:28:26,866 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:26,866 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:26,866 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-04 14:28:26,866 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:26,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:26,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:26,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:26,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:26,875 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:26,875 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:26,876 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 14:28:26,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:28:26,915 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:28:26,915 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:26,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:27,061 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 14:28:27,082 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:27,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-04 14:28:27,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 14:28:27,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 14:28:27,083 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:27,083 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-04 14:28:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:27,124 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 14:28:27,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 14:28:27,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-04 14:28:27,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:27,128 INFO L225 Difference]: With dead ends: 13 [2018-10-04 14:28:27,128 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 14:28:27,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-04 14:28:27,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 14:28:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 14:28:27,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 14:28:27,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 14:28:27,137 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-04 14:28:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:27,137 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 14:28:27,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 14:28:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 14:28:27,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 14:28:27,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:27,139 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-04 14:28:27,139 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:27,140 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:27,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-04 14:28:27,140 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:27,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:27,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:27,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:27,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:27,154 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:27,154 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:27,155 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 14:28:27,170 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:28:27,189 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-04 14:28:27,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:27,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:27,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:27,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-04 14:28:27,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 14:28:27,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 14:28:27,329 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:27,329 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-04 14:28:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:27,527 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 14:28:27,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 14:28:27,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-04 14:28:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:27,529 INFO L225 Difference]: With dead ends: 15 [2018-10-04 14:28:27,529 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 14:28:27,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-04 14:28:27,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 14:28:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 14:28:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 14:28:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 14:28:27,535 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-04 14:28:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:27,535 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 14:28:27,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 14:28:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 14:28:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 14:28:27,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:27,536 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-04 14:28:27,536 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:27,537 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:27,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-04 14:28:27,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:27,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:27,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:27,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:27,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:27,550 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:27,550 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:27,550 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 14:28:27,566 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:28:27,614 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:28:27,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:27,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:27,778 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:27,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-04 14:28:27,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 14:28:27,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 14:28:27,779 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:27,780 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-10-04 14:28:27,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:27,951 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 14:28:27,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 14:28:27,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-04 14:28:27,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:27,952 INFO L225 Difference]: With dead ends: 17 [2018-10-04 14:28:27,953 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 14:28:27,953 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5 [2018-10-04 14:28:27,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 14:28:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 14:28:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 14:28:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 14:28:27,959 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-04 14:28:27,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:27,959 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 14:28:27,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 14:28:27,960 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 14:28:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 14:28:27,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:27,962 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-04 14:28:27,962 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:27,962 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:27,962 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-04 14:28:27,963 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:27,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:27,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:27,967 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:27,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:27,986 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:27,986 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:27,986 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 14:28:27,995 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:28:28,010 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-04 14:28:28,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:28,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:28,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:28,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-04 14:28:28,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 14:28:28,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 14:28:28,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:28,165 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-10-04 14:28:28,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:28,243 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 14:28:28,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 14:28:28,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-04 14:28:28,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:28,249 INFO L225 Difference]: With dead ends: 19 [2018-10-04 14:28:28,249 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 14:28:28,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-04 14:28:28,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 14:28:28,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 14:28:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 14:28:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 14:28:28,254 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-04 14:28:28,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:28,255 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 14:28:28,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 14:28:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 14:28:28,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 14:28:28,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:28,256 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-10-04 14:28:28,256 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:28,256 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:28,257 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-10-04 14:28:28,257 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:28,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:28,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:28,258 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:28,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:28,267 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:28,267 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:28,267 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:28:28,285 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:28:28,306 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 14:28:28,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:28,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:28,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:28,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-04 14:28:28,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 14:28:28,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 14:28:28,884 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:28,884 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-10-04 14:28:29,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:29,055 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 14:28:29,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 14:28:29,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-04 14:28:29,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:29,059 INFO L225 Difference]: With dead ends: 21 [2018-10-04 14:28:29,059 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 14:28:29,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 7 [2018-10-04 14:28:29,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 14:28:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 14:28:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 14:28:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 14:28:29,065 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-04 14:28:29,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:29,065 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 14:28:29,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 14:28:29,065 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 14:28:29,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 14:28:29,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:29,066 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-04 14:28:29,066 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:29,067 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:29,067 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-10-04 14:28:29,067 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:29,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:29,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:29,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:29,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:29,078 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:29,078 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:29,078 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 14:28:29,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:29,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:29,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:29,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-04 14:28:29,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 14:28:29,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 14:28:29,304 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:29,304 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-10-04 14:28:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:29,427 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 14:28:29,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 14:28:29,429 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-04 14:28:29,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:29,430 INFO L225 Difference]: With dead ends: 23 [2018-10-04 14:28:29,430 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 14:28:29,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8 [2018-10-04 14:28:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 14:28:29,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 14:28:29,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 14:28:29,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 14:28:29,436 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-04 14:28:29,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:29,436 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 14:28:29,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 14:28:29,436 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 14:28:29,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 14:28:29,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:29,437 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-10-04 14:28:29,437 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:29,438 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:29,438 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-10-04 14:28:29,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:29,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:29,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:29,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:29,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:29,449 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:29,450 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:29,450 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 14:28:29,466 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:28:29,479 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:28:29,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:29,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:29,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:29,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-04 14:28:29,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 14:28:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 14:28:29,666 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:29,666 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-10-04 14:28:29,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:29,803 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 14:28:29,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 14:28:29,809 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-10-04 14:28:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:29,810 INFO L225 Difference]: With dead ends: 25 [2018-10-04 14:28:29,810 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 14:28:29,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9 [2018-10-04 14:28:29,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 14:28:29,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 14:28:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 14:28:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 14:28:29,815 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-10-04 14:28:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:29,816 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 14:28:29,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 14:28:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 14:28:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 14:28:29,817 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:29,817 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-04 14:28:29,817 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:29,818 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:29,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-10-04 14:28:29,818 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:29,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:29,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:29,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:29,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:29,829 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:29,829 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:29,830 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 14:28:29,843 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:28:29,868 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-04 14:28:29,869 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:29,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:30,110 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:30,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:30,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-04 14:28:30,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 14:28:30,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 14:28:30,141 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:30,141 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-04 14:28:30,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:30,487 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 14:28:30,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 14:28:30,488 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-04 14:28:30,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:30,488 INFO L225 Difference]: With dead ends: 27 [2018-10-04 14:28:30,488 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 14:28:30,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 10 [2018-10-04 14:28:30,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 14:28:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 14:28:30,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 14:28:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 14:28:30,495 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-10-04 14:28:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:30,495 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 14:28:30,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 14:28:30,496 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 14:28:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 14:28:30,496 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:30,497 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-10-04 14:28:30,497 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:30,497 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:30,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-10-04 14:28:30,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:30,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:30,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:30,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:30,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:30,508 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:30,508 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:30,508 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 14:28:30,524 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:28:30,544 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:28:30,544 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:30,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:30,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:30,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-04 14:28:30,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 14:28:30,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 14:28:30,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:30,828 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-10-04 14:28:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:31,076 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 14:28:31,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 14:28:31,076 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-10-04 14:28:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:31,077 INFO L225 Difference]: With dead ends: 29 [2018-10-04 14:28:31,077 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 14:28:31,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 11 [2018-10-04 14:28:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 14:28:31,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 14:28:31,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 14:28:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 14:28:31,084 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-10-04 14:28:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:31,085 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 14:28:31,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 14:28:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 14:28:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 14:28:31,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:31,086 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-04 14:28:31,086 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:31,086 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:31,087 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-10-04 14:28:31,087 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:31,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:31,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:31,088 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:31,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:31,098 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:31,098 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:31,098 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 14:28:31,116 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:28:31,139 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-04 14:28:31,140 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:31,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:31,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:31,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-04 14:28:31,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 14:28:31,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 14:28:31,641 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:31,641 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-10-04 14:28:31,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:31,987 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 14:28:31,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 14:28:31,989 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-04 14:28:31,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:31,990 INFO L225 Difference]: With dead ends: 31 [2018-10-04 14:28:31,990 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 14:28:31,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 12 [2018-10-04 14:28:31,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 14:28:31,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 14:28:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 14:28:31,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 14:28:31,996 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-10-04 14:28:31,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:31,997 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 14:28:31,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 14:28:31,997 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 14:28:31,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 14:28:31,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:31,998 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-10-04 14:28:31,998 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:31,998 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:31,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-10-04 14:28:31,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:31,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:31,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:32,000 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:32,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:32,009 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:32,009 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:32,009 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:28:32,024 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:28:32,053 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 14:28:32,053 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:32,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:32,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:32,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-04 14:28:32,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 14:28:32,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 14:28:32,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:32,310 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-10-04 14:28:32,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:32,573 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 14:28:32,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 14:28:32,574 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-10-04 14:28:32,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:32,574 INFO L225 Difference]: With dead ends: 33 [2018-10-04 14:28:32,574 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 14:28:32,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 13 [2018-10-04 14:28:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 14:28:32,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 14:28:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 14:28:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 14:28:32,581 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-10-04 14:28:32,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:32,581 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 14:28:32,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 14:28:32,582 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 14:28:32,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 14:28:32,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:32,582 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-04 14:28:32,583 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:32,583 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:32,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-10-04 14:28:32,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:32,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:32,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:32,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:32,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:32,609 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:32,609 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:32,610 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:28:32,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:32,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:34,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:34,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-04 14:28:34,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 14:28:34,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 14:28:34,037 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:34,037 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-10-04 14:28:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:34,214 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 14:28:34,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 14:28:34,214 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-04 14:28:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:34,215 INFO L225 Difference]: With dead ends: 35 [2018-10-04 14:28:34,215 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 14:28:34,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 14 [2018-10-04 14:28:34,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 14:28:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 14:28:34,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 14:28:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 14:28:34,223 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-10-04 14:28:34,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:34,223 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 14:28:34,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 14:28:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 14:28:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 14:28:34,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:34,224 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-10-04 14:28:34,225 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:34,225 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:34,225 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-10-04 14:28:34,225 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:34,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:34,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:34,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:34,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:34,256 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:34,256 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:34,256 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 14:28:34,267 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:28:34,299 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:28:34,299 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:34,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:35,028 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 14:28:35,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:35,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-04 14:28:35,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 14:28:35,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 14:28:35,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:35,060 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-10-04 14:28:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:35,318 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 14:28:35,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 14:28:35,318 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-04 14:28:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:35,319 INFO L225 Difference]: With dead ends: 37 [2018-10-04 14:28:35,319 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 14:28:35,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 15 [2018-10-04 14:28:35,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 14:28:35,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 14:28:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 14:28:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 14:28:35,326 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-04 14:28:35,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:35,326 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 14:28:35,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 14:28:35,327 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 14:28:35,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 14:28:35,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:35,328 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-04 14:28:35,328 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:35,328 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:35,328 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-10-04 14:28:35,328 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:35,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:35,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:35,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:35,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:35,339 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:35,339 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:35,339 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 14:28:35,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:28:35,407 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-04 14:28:35,408 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:35,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:35,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:35,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-04 14:28:35,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 14:28:35,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 14:28:35,872 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:35,872 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-10-04 14:28:36,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:36,204 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 14:28:36,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 14:28:36,211 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-04 14:28:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:36,212 INFO L225 Difference]: With dead ends: 39 [2018-10-04 14:28:36,212 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 14:28:36,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 16 [2018-10-04 14:28:36,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 14:28:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 14:28:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 14:28:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 14:28:36,217 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-10-04 14:28:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:36,218 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 14:28:36,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 14:28:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 14:28:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 14:28:36,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:36,219 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-10-04 14:28:36,219 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:36,219 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:36,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-10-04 14:28:36,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:36,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:36,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:36,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:36,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:36,232 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:36,233 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:36,233 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 14:28:36,254 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:28:36,283 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:28:36,283 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:36,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:36,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:36,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-04 14:28:36,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 14:28:36,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 14:28:36,596 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:36,596 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-10-04 14:28:36,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:36,881 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 14:28:36,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 14:28:36,888 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-10-04 14:28:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:36,889 INFO L225 Difference]: With dead ends: 41 [2018-10-04 14:28:36,889 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 14:28:36,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 17 [2018-10-04 14:28:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 14:28:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 14:28:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 14:28:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 14:28:36,896 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-10-04 14:28:36,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:36,896 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 14:28:36,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 14:28:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 14:28:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 14:28:36,900 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:36,900 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-04 14:28:36,901 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:36,901 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:36,901 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-10-04 14:28:36,901 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:36,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:36,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:36,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:36,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:36,912 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:36,912 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:36,913 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:28:36,930 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:28:36,965 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-04 14:28:36,965 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:36,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:37,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:37,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-04 14:28:37,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 14:28:37,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 14:28:37,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:37,498 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-10-04 14:28:38,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:38,031 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 14:28:38,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 14:28:38,032 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-04 14:28:38,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:38,032 INFO L225 Difference]: With dead ends: 43 [2018-10-04 14:28:38,033 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 14:28:38,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 18 [2018-10-04 14:28:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 14:28:38,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 14:28:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 14:28:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 14:28:38,040 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-10-04 14:28:38,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:38,040 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 14:28:38,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 14:28:38,040 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 14:28:38,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 14:28:38,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:38,041 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-10-04 14:28:38,042 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:38,042 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:38,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-10-04 14:28:38,042 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:38,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:38,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:38,043 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:38,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:38,052 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:38,052 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:38,052 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 14:28:38,072 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:28:38,128 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 14:28:38,128 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:38,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:38,462 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:38,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-04 14:28:38,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 14:28:38,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 14:28:38,463 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:38,463 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-10-04 14:28:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:39,067 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 14:28:39,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 14:28:39,068 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-10-04 14:28:39,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:39,068 INFO L225 Difference]: With dead ends: 45 [2018-10-04 14:28:39,069 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 14:28:39,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 19 [2018-10-04 14:28:39,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 14:28:39,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 14:28:39,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 14:28:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 14:28:39,074 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-10-04 14:28:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:39,074 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 14:28:39,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 14:28:39,074 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 14:28:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 14:28:39,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:39,075 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-04 14:28:39,075 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:39,075 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:39,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-10-04 14:28:39,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:39,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:39,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:39,076 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:39,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:39,084 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:39,085 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:39,085 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 14:28:39,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:39,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:39,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:39,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-04 14:28:39,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 14:28:39,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 14:28:39,561 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:39,561 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-10-04 14:28:40,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:40,006 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 14:28:40,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 14:28:40,007 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-04 14:28:40,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:40,008 INFO L225 Difference]: With dead ends: 47 [2018-10-04 14:28:40,008 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 14:28:40,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 20 [2018-10-04 14:28:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 14:28:40,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 14:28:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 14:28:40,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 14:28:40,016 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-10-04 14:28:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:40,020 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 14:28:40,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 14:28:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 14:28:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 14:28:40,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:40,021 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-10-04 14:28:40,021 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:40,021 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:40,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-10-04 14:28:40,022 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:40,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:40,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:40,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:40,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:40,030 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:40,031 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:40,031 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 14:28:40,044 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:28:40,076 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:28:40,076 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:40,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:40,688 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:40,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-04 14:28:40,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 14:28:40,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 14:28:40,689 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:40,689 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-10-04 14:28:41,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:41,130 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 14:28:41,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 14:28:41,130 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-04 14:28:41,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:41,131 INFO L225 Difference]: With dead ends: 49 [2018-10-04 14:28:41,131 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 14:28:41,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 21 [2018-10-04 14:28:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 14:28:41,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 14:28:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 14:28:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 14:28:41,139 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-10-04 14:28:41,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:41,139 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 14:28:41,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 14:28:41,139 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 14:28:41,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 14:28:41,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:41,140 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-04 14:28:41,140 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:41,141 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:41,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-10-04 14:28:41,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:41,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:41,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:41,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:41,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:41,149 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:41,149 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:41,149 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:28:41,164 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:28:41,294 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-04 14:28:41,294 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:41,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:41,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:41,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-04 14:28:41,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 14:28:41,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 14:28:41,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:41,722 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-10-04 14:28:42,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:42,257 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 14:28:42,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 14:28:42,260 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-04 14:28:42,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:42,261 INFO L225 Difference]: With dead ends: 51 [2018-10-04 14:28:42,261 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 14:28:42,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 22 [2018-10-04 14:28:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 14:28:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 14:28:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 14:28:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 14:28:42,266 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-10-04 14:28:42,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:42,267 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 14:28:42,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 14:28:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 14:28:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 14:28:42,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:42,268 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-10-04 14:28:42,268 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:42,268 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:42,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-10-04 14:28:42,268 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:42,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:42,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:42,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:42,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:42,277 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:42,277 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:42,277 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 14:28:42,299 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:28:42,337 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:28:42,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:42,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:42,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:42,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-04 14:28:42,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 14:28:42,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 14:28:42,788 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:42,788 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-10-04 14:28:43,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:43,204 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 14:28:43,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 14:28:43,205 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-10-04 14:28:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:43,206 INFO L225 Difference]: With dead ends: 53 [2018-10-04 14:28:43,206 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 14:28:43,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 23 [2018-10-04 14:28:43,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 14:28:43,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 14:28:43,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 14:28:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 14:28:43,213 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-04 14:28:43,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:43,213 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 14:28:43,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 14:28:43,213 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 14:28:43,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 14:28:43,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:43,214 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-04 14:28:43,214 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:43,214 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:43,215 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-10-04 14:28:43,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:43,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:43,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:43,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:43,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:43,223 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:43,223 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:43,223 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 14:28:43,240 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:28:43,290 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-04 14:28:43,290 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:43,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:43,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:43,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-04 14:28:43,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 14:28:43,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 14:28:43,782 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:43,782 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-10-04 14:28:44,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:44,247 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 14:28:44,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 14:28:44,247 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-04 14:28:44,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:44,248 INFO L225 Difference]: With dead ends: 55 [2018-10-04 14:28:44,248 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 14:28:44,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 24 [2018-10-04 14:28:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 14:28:44,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 14:28:44,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 14:28:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 14:28:44,254 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-10-04 14:28:44,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:44,254 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 14:28:44,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 14:28:44,255 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 14:28:44,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 14:28:44,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:44,255 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-10-04 14:28:44,255 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:44,255 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:44,255 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-10-04 14:28:44,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:44,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:44,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:44,256 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:44,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:44,263 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:44,263 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:44,264 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:28:44,280 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:28:44,396 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 14:28:44,397 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:44,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:44,917 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:44,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:44,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-04 14:28:44,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 14:28:44,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 14:28:44,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:44,937 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-10-04 14:28:45,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:45,516 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 14:28:45,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 14:28:45,516 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-10-04 14:28:45,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:45,517 INFO L225 Difference]: With dead ends: 57 [2018-10-04 14:28:45,517 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 14:28:45,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 25 [2018-10-04 14:28:45,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 14:28:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 14:28:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 14:28:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 14:28:45,526 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-10-04 14:28:45,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:45,527 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 14:28:45,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 14:28:45,527 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 14:28:45,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 14:28:45,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:45,528 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-04 14:28:45,528 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:45,528 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:45,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-10-04 14:28:45,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:45,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:45,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:45,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:45,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:45,538 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:45,538 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:45,538 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 14:28:45,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:45,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:46,426 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:46,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-04 14:28:46,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 14:28:46,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 14:28:46,427 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:46,427 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-10-04 14:28:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:46,971 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 14:28:46,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 14:28:46,971 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-04 14:28:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:46,972 INFO L225 Difference]: With dead ends: 59 [2018-10-04 14:28:46,972 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 14:28:46,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.6s impTime 26 [2018-10-04 14:28:46,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 14:28:46,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 14:28:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 14:28:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 14:28:46,977 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-10-04 14:28:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:46,978 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 14:28:46,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 14:28:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 14:28:46,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 14:28:46,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:46,978 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-10-04 14:28:46,978 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:46,978 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:46,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-10-04 14:28:46,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:46,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:46,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:46,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:46,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:46,986 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:46,987 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:46,987 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 14:28:47,000 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:28:47,042 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:28:47,042 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:47,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:47,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:47,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-04 14:28:47,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 14:28:47,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 14:28:47,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:47,651 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-10-04 14:28:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:48,241 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 14:28:48,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 14:28:48,241 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-10-04 14:28:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:48,242 INFO L225 Difference]: With dead ends: 61 [2018-10-04 14:28:48,242 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 14:28:48,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 27 [2018-10-04 14:28:48,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 14:28:48,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 14:28:48,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 14:28:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 14:28:48,249 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-10-04 14:28:48,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:48,250 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 14:28:48,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 14:28:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 14:28:48,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 14:28:48,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:48,250 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-04 14:28:48,251 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:48,251 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:48,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-10-04 14:28:48,251 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:48,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:48,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:48,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:48,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:48,260 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:48,260 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:48,260 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:28:48,275 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:28:48,592 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-04 14:28:48,592 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:48,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:49,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:49,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-04 14:28:49,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 14:28:49,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 14:28:49,213 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:49,213 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-10-04 14:28:49,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:49,842 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 14:28:49,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 14:28:49,843 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-04 14:28:49,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:49,844 INFO L225 Difference]: With dead ends: 63 [2018-10-04 14:28:49,844 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 14:28:49,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime 28 [2018-10-04 14:28:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 14:28:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 14:28:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 14:28:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 14:28:49,850 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-10-04 14:28:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:49,850 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 14:28:49,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 14:28:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 14:28:49,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 14:28:49,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:49,850 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-10-04 14:28:49,851 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:49,851 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:49,851 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-10-04 14:28:49,851 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:49,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:49,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:49,852 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:49,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:49,858 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:49,858 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:49,858 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:28:49,871 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:28:49,924 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:28:49,924 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:49,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:50,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:50,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-04 14:28:50,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 14:28:50,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 14:28:50,592 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:50,593 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-10-04 14:28:51,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:51,434 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 14:28:51,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 14:28:51,434 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-10-04 14:28:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:51,435 INFO L225 Difference]: With dead ends: 65 [2018-10-04 14:28:51,435 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 14:28:51,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 29 [2018-10-04 14:28:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 14:28:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 14:28:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 14:28:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 14:28:51,441 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-10-04 14:28:51,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:51,442 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 14:28:51,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 14:28:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 14:28:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 14:28:51,442 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:51,442 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-04 14:28:51,443 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:51,443 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:51,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-10-04 14:28:51,443 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:51,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:51,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:51,444 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:51,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:51,450 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:51,451 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:51,451 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) [2018-10-04 14:28:51,465 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:28:51,549 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-04 14:28:51,550 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:51,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:53,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:53,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-04 14:28:53,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 14:28:53,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 14:28:53,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:53,059 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-10-04 14:28:53,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:53,823 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 14:28:53,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 14:28:53,823 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-04 14:28:53,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:53,824 INFO L225 Difference]: With dead ends: 67 [2018-10-04 14:28:53,825 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 14:28:53,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime 30 [2018-10-04 14:28:53,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 14:28:53,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 14:28:53,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 14:28:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 14:28:53,831 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-10-04 14:28:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:53,831 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 14:28:53,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 14:28:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 14:28:53,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 14:28:53,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:53,832 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-10-04 14:28:53,832 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:53,832 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:53,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-10-04 14:28:53,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:53,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:53,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:53,834 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:53,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:53,841 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:53,841 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:53,841 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 14:28:53,869 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:28:54,194 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 14:28:54,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:54,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:54,924 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:54,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-04 14:28:54,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 14:28:54,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 14:28:54,925 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:54,925 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-10-04 14:28:55,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:55,672 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 14:28:55,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 14:28:55,673 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-10-04 14:28:55,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:55,674 INFO L225 Difference]: With dead ends: 69 [2018-10-04 14:28:55,674 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 14:28:55,674 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 31 [2018-10-04 14:28:55,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 14:28:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 14:28:55,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 14:28:55,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 14:28:55,680 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-10-04 14:28:55,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:55,680 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 14:28:55,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 14:28:55,680 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 14:28:55,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 14:28:55,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:55,681 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-04 14:28:55,681 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:55,681 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:55,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-10-04 14:28:55,681 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:55,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:55,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:55,682 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:55,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:55,688 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:55,688 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:55,689 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:28:55,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:28:55,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:56,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:56,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-04 14:28:56,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 14:28:56,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 14:28:56,762 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:56,762 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-10-04 14:28:57,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:57,531 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 14:28:57,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 14:28:57,532 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-04 14:28:57,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:57,533 INFO L225 Difference]: With dead ends: 71 [2018-10-04 14:28:57,533 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 14:28:57,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 32 [2018-10-04 14:28:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 14:28:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 14:28:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 14:28:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 14:28:57,539 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-10-04 14:28:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:57,539 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 14:28:57,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 14:28:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 14:28:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 14:28:57,540 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:57,540 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-10-04 14:28:57,540 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:57,540 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:57,540 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-10-04 14:28:57,540 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:57,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:57,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:57,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:28:57,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:57,546 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:57,546 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:57,546 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:28:57,554 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:28:57,618 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:28:57,618 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:28:57,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:28:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:28:58,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:28:58,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-04 14:28:58,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 14:28:58,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 14:28:58,410 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:28:58,410 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-10-04 14:28:59,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:28:59,272 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 14:28:59,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 14:28:59,272 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-10-04 14:28:59,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:28:59,273 INFO L225 Difference]: With dead ends: 73 [2018-10-04 14:28:59,273 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 14:28:59,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.6s impTime 33 [2018-10-04 14:28:59,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 14:28:59,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 14:28:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 14:28:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 14:28:59,279 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-10-04 14:28:59,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:28:59,279 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 14:28:59,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 14:28:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 14:28:59,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 14:28:59,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:28:59,280 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-04 14:28:59,280 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:28:59,280 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:28:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-10-04 14:28:59,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:28:59,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:28:59,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:59,281 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:28:59,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:28:59,287 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:28:59,287 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:28:59,287 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 14:28:59,302 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:29:00,001 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-04 14:29:00,001 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:00,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:00,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:00,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-04 14:29:00,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 14:29:00,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 14:29:00,872 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:00,873 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-10-04 14:29:01,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:01,947 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 14:29:01,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 14:29:01,947 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-04 14:29:01,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:01,948 INFO L225 Difference]: With dead ends: 75 [2018-10-04 14:29:01,949 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 14:29:01,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 34 [2018-10-04 14:29:01,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 14:29:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 14:29:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 14:29:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 14:29:01,955 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-10-04 14:29:01,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:01,956 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 14:29:01,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 14:29:01,956 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 14:29:01,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 14:29:01,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:01,957 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-10-04 14:29:01,957 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:01,957 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:01,957 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-10-04 14:29:01,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:01,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:01,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:01,958 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:01,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:01,964 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:01,965 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:01,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:29:01,980 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:29:02,037 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:29:02,037 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:02,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:02,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:02,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-04 14:29:02,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 14:29:02,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 14:29:02,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:02,944 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-10-04 14:29:03,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:03,982 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 14:29:03,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 14:29:03,982 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-10-04 14:29:03,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:03,983 INFO L225 Difference]: With dead ends: 77 [2018-10-04 14:29:03,983 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 14:29:03,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.7s impTime 35 [2018-10-04 14:29:03,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 14:29:03,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 14:29:03,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 14:29:03,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 14:29:03,990 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-10-04 14:29:03,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:03,991 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 14:29:03,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 14:29:03,991 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 14:29:03,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 14:29:03,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:03,991 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-04 14:29:03,992 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:03,992 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:03,992 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-10-04 14:29:03,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:03,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:03,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:03,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:03,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:03,999 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:04,000 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:04,000 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 14:29:04,007 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:29:04,099 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 14:29:04,100 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:04,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:05,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:05,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-04 14:29:05,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 14:29:05,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 14:29:05,150 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:05,150 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-10-04 14:29:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:06,116 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 14:29:06,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 14:29:06,117 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-04 14:29:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:06,118 INFO L225 Difference]: With dead ends: 79 [2018-10-04 14:29:06,118 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 14:29:06,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 36 [2018-10-04 14:29:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 14:29:06,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 14:29:06,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 14:29:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-04 14:29:06,123 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-10-04 14:29:06,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:06,124 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-04 14:29:06,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 14:29:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-04 14:29:06,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 14:29:06,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:06,124 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-10-04 14:29:06,124 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:06,125 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:06,125 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-10-04 14:29:06,125 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:06,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:06,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:06,126 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:06,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:06,131 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:06,131 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:06,132 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 14:29:06,142 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:29:06,403 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 14:29:06,403 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:06,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:07,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:07,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-04 14:29:07,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 14:29:07,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 14:29:07,470 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:07,470 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-10-04 14:29:08,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:08,561 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 14:29:08,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 14:29:08,562 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-10-04 14:29:08,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:08,563 INFO L225 Difference]: With dead ends: 81 [2018-10-04 14:29:08,563 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 14:29:08,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 37 [2018-10-04 14:29:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 14:29:08,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 14:29:08,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 14:29:08,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 14:29:08,568 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-10-04 14:29:08,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:08,569 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 14:29:08,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 14:29:08,569 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 14:29:08,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 14:29:08,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:08,569 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-04 14:29:08,570 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:08,570 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:08,570 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-10-04 14:29:08,570 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:08,570 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:08,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:08,571 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:08,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:08,578 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:08,578 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:08,578 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 14:29:08,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:29:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:29:08,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:09,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:09,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-04 14:29:09,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 14:29:09,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 14:29:09,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:09,912 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-10-04 14:29:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:10,993 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 14:29:10,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 14:29:10,994 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-04 14:29:10,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:10,995 INFO L225 Difference]: With dead ends: 83 [2018-10-04 14:29:10,995 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 14:29:10,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime 38 [2018-10-04 14:29:10,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 14:29:10,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 14:29:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 14:29:11,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-04 14:29:11,000 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-10-04 14:29:11,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:11,000 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-04 14:29:11,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 14:29:11,001 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-04 14:29:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 14:29:11,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:11,001 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-10-04 14:29:11,001 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:11,002 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:11,002 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-10-04 14:29:11,002 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:11,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:11,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:11,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:29:11,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:11,009 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:11,009 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:11,010 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 14:29:11,025 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:29:11,108 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:29:11,108 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:11,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:13,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:13,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-04 14:29:13,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 14:29:13,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 14:29:13,349 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:13,349 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-10-04 14:29:14,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:14,523 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 14:29:14,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 14:29:14,524 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-10-04 14:29:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:14,525 INFO L225 Difference]: With dead ends: 85 [2018-10-04 14:29:14,525 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 14:29:14,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 39 [2018-10-04 14:29:14,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 14:29:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 14:29:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 14:29:14,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 14:29:14,530 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-10-04 14:29:14,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:14,531 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 14:29:14,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 14:29:14,531 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 14:29:14,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 14:29:14,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:14,531 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-04 14:29:14,532 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:14,532 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:14,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-10-04 14:29:14,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:14,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:14,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:14,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:14,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:14,539 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:14,539 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:14,540 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 14:29:14,550 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:29:15,947 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-04 14:29:15,948 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:15,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:17,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:17,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-04 14:29:17,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 14:29:17,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 14:29:17,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:17,234 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-10-04 14:29:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:18,441 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 14:29:18,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 14:29:18,441 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-04 14:29:18,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:18,442 INFO L225 Difference]: With dead ends: 87 [2018-10-04 14:29:18,442 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 14:29:18,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime 40 [2018-10-04 14:29:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 14:29:18,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 14:29:18,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 14:29:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-04 14:29:18,448 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-10-04 14:29:18,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:18,448 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-04 14:29:18,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 14:29:18,448 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-04 14:29:18,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 14:29:18,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:18,449 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-10-04 14:29:18,449 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:18,449 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:18,449 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-10-04 14:29:18,450 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:18,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:18,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:18,450 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:18,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:18,457 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:18,457 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:18,457 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:29:18,467 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:29:18,565 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:29:18,566 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:18,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:19,891 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:19,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-04 14:29:19,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 14:29:19,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 14:29:19,892 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:19,892 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-10-04 14:29:21,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:21,173 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 14:29:21,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 14:29:21,173 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-10-04 14:29:21,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:21,174 INFO L225 Difference]: With dead ends: 89 [2018-10-04 14:29:21,174 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 14:29:21,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime 41 [2018-10-04 14:29:21,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 14:29:21,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 14:29:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 14:29:21,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 14:29:21,181 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-10-04 14:29:21,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:21,182 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 14:29:21,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 14:29:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 14:29:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 14:29:21,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:21,183 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-04 14:29:21,183 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:21,183 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:21,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-10-04 14:29:21,183 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:21,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:21,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:21,184 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:21,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:21,191 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:21,191 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:21,191 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 14:29:21,201 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:29:21,323 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-04 14:29:21,323 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:21,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:23,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:23,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:23,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-04 14:29:23,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 14:29:23,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 14:29:23,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:23,436 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-10-04 14:29:24,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:24,740 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 14:29:24,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 14:29:24,740 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-04 14:29:24,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:24,741 INFO L225 Difference]: With dead ends: 91 [2018-10-04 14:29:24,741 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 14:29:24,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 42 [2018-10-04 14:29:24,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 14:29:24,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 14:29:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 14:29:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-04 14:29:24,745 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-10-04 14:29:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:24,745 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-04 14:29:24,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 14:29:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-04 14:29:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 14:29:24,746 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:24,746 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-10-04 14:29:24,746 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:24,746 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:24,746 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-10-04 14:29:24,747 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:24,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:24,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:24,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:24,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:24,753 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:24,753 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:24,753 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 14:29:24,768 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:29:25,195 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 14:29:25,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:25,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:26,485 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:26,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-04 14:29:26,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 14:29:26,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 14:29:26,486 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:26,487 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-10-04 14:29:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:28,004 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 14:29:28,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 14:29:28,005 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-10-04 14:29:28,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:28,006 INFO L225 Difference]: With dead ends: 93 [2018-10-04 14:29:28,006 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 14:29:28,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.0s impTime 43 [2018-10-04 14:29:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 14:29:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 14:29:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 14:29:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 14:29:28,011 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-10-04 14:29:28,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:28,011 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 14:29:28,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 14:29:28,011 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 14:29:28,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 14:29:28,012 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:28,012 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-04 14:29:28,012 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:28,012 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:28,012 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-10-04 14:29:28,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:28,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:28,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:28,013 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:28,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:28,019 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:28,019 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:28,020 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:29:28,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:29:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:29:28,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:29,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:29,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-04 14:29:29,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 14:29:29,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 14:29:29,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:29,499 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-10-04 14:29:30,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:30,926 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 14:29:30,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 14:29:30,926 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-04 14:29:30,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:30,927 INFO L225 Difference]: With dead ends: 95 [2018-10-04 14:29:30,927 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 14:29:30,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime 44 [2018-10-04 14:29:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 14:29:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 14:29:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 14:29:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-04 14:29:30,933 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-10-04 14:29:30,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:30,933 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-04 14:29:30,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 14:29:30,933 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-04 14:29:30,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 14:29:30,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:30,934 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-10-04 14:29:30,934 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:30,934 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:30,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-10-04 14:29:30,935 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:30,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:30,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:30,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:29:30,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:30,942 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:30,942 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:30,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:29:30,957 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:29:31,049 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:29:31,049 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:31,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:32,618 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:32,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-04 14:29:32,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 14:29:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 14:29:32,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:32,619 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-10-04 14:29:34,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:34,131 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 14:29:34,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 14:29:34,132 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-10-04 14:29:34,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:34,133 INFO L225 Difference]: With dead ends: 97 [2018-10-04 14:29:34,133 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 14:29:34,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 45 [2018-10-04 14:29:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 14:29:34,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 14:29:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 14:29:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 14:29:34,141 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-10-04 14:29:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:34,141 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 14:29:34,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 14:29:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 14:29:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 14:29:34,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:34,142 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-04 14:29:34,142 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:34,142 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:34,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-10-04 14:29:34,143 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:34,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:34,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:34,143 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:34,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:34,149 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:34,149 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:34,149 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:29:34,158 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:29:36,757 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-04 14:29:36,757 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:36,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:38,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:38,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-04 14:29:38,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 14:29:38,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 14:29:38,455 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:38,455 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-10-04 14:29:40,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:40,015 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 14:29:40,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 14:29:40,016 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-04 14:29:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:40,017 INFO L225 Difference]: With dead ends: 99 [2018-10-04 14:29:40,017 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 14:29:40,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.4s impTime 46 [2018-10-04 14:29:40,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 14:29:40,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 14:29:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 14:29:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-04 14:29:40,023 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-10-04 14:29:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:40,023 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-04 14:29:40,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 14:29:40,023 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-04 14:29:40,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 14:29:40,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:40,023 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-10-04 14:29:40,024 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:40,024 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:40,024 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-10-04 14:29:40,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:40,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:40,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:40,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:40,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:40,030 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:40,031 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:40,031 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:29:40,041 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:29:40,140 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:29:40,140 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:40,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:42,615 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:42,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-04 14:29:42,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 14:29:42,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 14:29:42,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:42,616 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-10-04 14:29:44,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:44,322 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 14:29:44,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 14:29:44,323 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-10-04 14:29:44,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:44,323 INFO L225 Difference]: With dead ends: 101 [2018-10-04 14:29:44,324 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 14:29:44,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.8s impTime 47 [2018-10-04 14:29:44,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 14:29:44,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 14:29:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 14:29:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 14:29:44,329 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-10-04 14:29:44,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:44,329 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 14:29:44,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 14:29:44,329 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 14:29:44,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 14:29:44,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:44,330 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-04 14:29:44,330 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:44,330 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:44,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-10-04 14:29:44,330 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:44,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:44,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:44,331 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:44,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:44,338 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:44,338 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:44,338 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 14:29:44,352 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:29:44,503 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-04 14:29:44,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:44,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:46,107 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:46,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-04 14:29:46,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 14:29:46,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 14:29:46,108 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:46,108 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-10-04 14:29:47,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:47,930 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 14:29:47,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 14:29:47,931 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-04 14:29:47,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:47,932 INFO L225 Difference]: With dead ends: 103 [2018-10-04 14:29:47,932 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 14:29:47,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime 48 [2018-10-04 14:29:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 14:29:47,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 14:29:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 14:29:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-04 14:29:47,940 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-10-04 14:29:47,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:47,940 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-04 14:29:47,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 14:29:47,940 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-04 14:29:47,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 14:29:47,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:47,941 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-10-04 14:29:47,941 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:47,941 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:47,941 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-10-04 14:29:47,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:47,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:47,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:47,942 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:47,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:47,949 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:47,949 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:47,950 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 14:29:47,957 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:29:49,906 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 14:29:49,906 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:49,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:51,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:51,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-04 14:29:51,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 14:29:51,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 14:29:51,982 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:51,982 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-10-04 14:29:53,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:53,944 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 14:29:53,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 14:29:53,944 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-10-04 14:29:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:53,946 INFO L225 Difference]: With dead ends: 105 [2018-10-04 14:29:53,946 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 14:29:53,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 49 [2018-10-04 14:29:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 14:29:53,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 14:29:53,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 14:29:53,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 14:29:53,953 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-10-04 14:29:53,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:53,953 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 14:29:53,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 14:29:53,953 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 14:29:53,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 14:29:53,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:53,954 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-04 14:29:53,954 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:53,954 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:53,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-10-04 14:29:53,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:53,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:53,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:53,955 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:29:53,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:53,962 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:53,962 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:53,963 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 14:29:53,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:29:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:29:54,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:29:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:29:55,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:29:55,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-04 14:29:55,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 14:29:55,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 14:29:55,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:29:55,746 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-10-04 14:29:57,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:29:57,872 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 14:29:57,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 14:29:57,872 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-04 14:29:57,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:29:57,873 INFO L225 Difference]: With dead ends: 107 [2018-10-04 14:29:57,873 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 14:29:57,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.4s impTime 50 [2018-10-04 14:29:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 14:29:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 14:29:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 14:29:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-04 14:29:57,882 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-10-04 14:29:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:29:57,882 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-04 14:29:57,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 14:29:57,883 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-04 14:29:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 14:29:57,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:29:57,883 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-10-04 14:29:57,884 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:29:57,884 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:29:57,884 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-10-04 14:29:57,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:29:57,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:29:57,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:57,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:29:57,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:29:57,893 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:29:57,893 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:29:57,893 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 14:29:57,908 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:29:58,053 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:29:58,053 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:29:58,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:00,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:30:00,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-04 14:30:00,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 14:30:00,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 14:30:00,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:00,387 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-10-04 14:30:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:02,435 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 14:30:02,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 14:30:02,436 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-10-04 14:30:02,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:02,437 INFO L225 Difference]: With dead ends: 109 [2018-10-04 14:30:02,437 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 14:30:02,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.6s impTime 51 [2018-10-04 14:30:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 14:30:02,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 14:30:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 14:30:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 14:30:02,444 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-10-04 14:30:02,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:02,445 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 14:30:02,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 14:30:02,445 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 14:30:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 14:30:02,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:02,446 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-04 14:30:02,446 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:02,446 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:02,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-10-04 14:30:02,446 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:02,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:02,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:02,447 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:02,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:02,455 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:30:02,455 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:30:02,455 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:30:02,463 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:30:06,978 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-04 14:30:06,978 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:06,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:09,009 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:30:09,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2018-10-04 14:30:09,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 14:30:09,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 14:30:09,010 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:09,010 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-10-04 14:30:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:11,076 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 14:30:11,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 14:30:11,076 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-04 14:30:11,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:11,077 INFO L225 Difference]: With dead ends: 111 [2018-10-04 14:30:11,077 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 14:30:11,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.7s impTime 52 [2018-10-04 14:30:11,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 14:30:11,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 14:30:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 14:30:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-04 14:30:11,082 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-10-04 14:30:11,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:11,083 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-04 14:30:11,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 14:30:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-04 14:30:11,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 14:30:11,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:11,083 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-10-04 14:30:11,083 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:11,084 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:11,084 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-10-04 14:30:11,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:11,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:11,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:11,085 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:11,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:11,091 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:30:11,092 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:30:11,092 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 14:30:11,103 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:30:11,228 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:30:11,228 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:11,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:13,445 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:30:13,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2018-10-04 14:30:13,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 14:30:13,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 14:30:13,446 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:13,446 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-10-04 14:30:15,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:15,572 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 14:30:15,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 14:30:15,572 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-10-04 14:30:15,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:15,573 INFO L225 Difference]: With dead ends: 113 [2018-10-04 14:30:15,573 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 14:30:15,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 53 [2018-10-04 14:30:15,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 14:30:15,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 14:30:15,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 14:30:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 14:30:15,579 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-10-04 14:30:15,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:15,579 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 14:30:15,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 14:30:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 14:30:15,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 14:30:15,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:15,580 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-04 14:30:15,580 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:15,580 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:15,580 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-10-04 14:30:15,580 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:15,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:15,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:15,581 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:15,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:15,588 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:30:15,588 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:30:15,589 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 14:30:15,602 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:30:15,788 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-04 14:30:15,788 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:15,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:17,830 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:30:17,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2018-10-04 14:30:17,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 14:30:17,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 14:30:17,831 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:17,831 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-10-04 14:30:20,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:20,125 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-04 14:30:20,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 14:30:20,126 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-04 14:30:20,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:20,127 INFO L225 Difference]: With dead ends: 115 [2018-10-04 14:30:20,127 INFO L226 Difference]: Without dead ends: 113 [2018-10-04 14:30:20,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 54 [2018-10-04 14:30:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-04 14:30:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-04 14:30:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-04 14:30:20,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-04 14:30:20,132 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-10-04 14:30:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:20,133 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-04 14:30:20,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 14:30:20,133 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-04 14:30:20,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-04 14:30:20,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:20,134 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-10-04 14:30:20,134 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:20,134 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:20,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-10-04 14:30:20,134 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:20,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:20,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:20,135 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:20,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:20,142 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:30:20,142 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:30:20,142 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:30:20,155 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:30:22,483 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-04 14:30:22,483 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:22,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:24,715 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:30:24,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2018-10-04 14:30:24,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 14:30:24,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 14:30:24,715 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:24,715 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-10-04 14:30:27,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:27,533 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-04 14:30:27,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 14:30:27,533 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-10-04 14:30:27,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:27,534 INFO L225 Difference]: With dead ends: 117 [2018-10-04 14:30:27,534 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 14:30:27,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.9s impTime 55 [2018-10-04 14:30:27,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 14:30:27,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 14:30:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 14:30:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-04 14:30:27,541 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-10-04 14:30:27,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:27,542 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-04 14:30:27,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 14:30:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-04 14:30:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 14:30:27,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:27,542 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-04 14:30:27,543 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:27,543 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:27,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-10-04 14:30:27,543 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:27,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:27,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:27,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:27,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:27,551 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:30:27,551 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:30:27,551 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) [2018-10-04 14:30:27,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:30:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:30:27,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:29,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:30:29,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-04 14:30:29,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 14:30:29,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 14:30:29,979 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:29,979 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-10-04 14:30:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:32,240 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-04 14:30:32,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 14:30:32,240 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-04 14:30:32,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:32,242 INFO L225 Difference]: With dead ends: 119 [2018-10-04 14:30:32,242 INFO L226 Difference]: Without dead ends: 117 [2018-10-04 14:30:32,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.9s impTime 56 [2018-10-04 14:30:32,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-04 14:30:32,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-04 14:30:32,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-04 14:30:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-04 14:30:32,250 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-10-04 14:30:32,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:32,251 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-04 14:30:32,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 14:30:32,251 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-04 14:30:32,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-04 14:30:32,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:32,252 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-10-04 14:30:32,252 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:32,252 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:32,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-10-04 14:30:32,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:32,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:32,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:32,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:30:32,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:32,260 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:30:32,260 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:30:32,261 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 14:30:32,274 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:30:32,404 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:30:32,404 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:32,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:35,994 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:30:35,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2018-10-04 14:30:35,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 14:30:35,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 14:30:35,995 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:35,995 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-10-04 14:30:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:38,460 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-04 14:30:38,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 14:30:38,461 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-10-04 14:30:38,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:38,462 INFO L225 Difference]: With dead ends: 121 [2018-10-04 14:30:38,462 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 14:30:38,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.0s impTime 57 [2018-10-04 14:30:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 14:30:38,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 14:30:38,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 14:30:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-04 14:30:38,468 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-10-04 14:30:38,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:38,468 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-04 14:30:38,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 14:30:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-04 14:30:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 14:30:38,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:38,468 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-04 14:30:38,469 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:38,469 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:38,469 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-10-04 14:30:38,469 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:38,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:38,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:38,470 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:38,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:38,476 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:30:38,477 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:30:38,477 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 14:30:38,491 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:30:46,239 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-04 14:30:46,239 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:46,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:48,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:30:48,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2018-10-04 14:30:48,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 14:30:48,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 14:30:48,712 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:48,712 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-10-04 14:30:51,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:51,377 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-04 14:30:51,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 14:30:51,377 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-04 14:30:51,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:51,378 INFO L225 Difference]: With dead ends: 123 [2018-10-04 14:30:51,378 INFO L226 Difference]: Without dead ends: 121 [2018-10-04 14:30:51,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 58 [2018-10-04 14:30:51,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-04 14:30:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-04 14:30:51,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-04 14:30:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-04 14:30:51,385 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-10-04 14:30:51,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:51,385 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-04 14:30:51,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 14:30:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-04 14:30:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-04 14:30:51,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:51,386 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-10-04 14:30:51,386 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:51,386 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:51,386 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-10-04 14:30:51,386 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:51,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:51,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:51,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:51,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:51,394 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:30:51,394 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:30:51,395 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 14:30:51,409 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:30:51,558 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:30:51,558 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:51,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:53,871 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:30:53,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2018-10-04 14:30:53,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 14:30:53,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 14:30:53,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:53,873 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-10-04 14:30:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:30:56,543 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-04 14:30:56,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 14:30:56,543 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-10-04 14:30:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:30:56,544 INFO L225 Difference]: With dead ends: 125 [2018-10-04 14:30:56,544 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 14:30:56,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 2.0s impTime 59 [2018-10-04 14:30:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 14:30:56,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-04 14:30:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-04 14:30:56,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-04 14:30:56,552 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-10-04 14:30:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:30:56,552 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-04 14:30:56,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 14:30:56,552 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-04 14:30:56,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-04 14:30:56,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:30:56,553 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-04 14:30:56,553 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:30:56,553 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:30:56,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-10-04 14:30:56,554 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:30:56,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:30:56,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:56,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:30:56,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:30:56,562 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:30:56,562 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:30:56,562 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 14:30:56,578 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:30:56,816 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-04 14:30:56,816 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:30:56,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:30:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:30:59,364 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:30:59,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2018-10-04 14:30:59,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 14:30:59,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 14:30:59,365 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:30:59,365 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-10-04 14:31:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:31:02,074 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-04 14:31:02,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 14:31:02,075 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-04 14:31:02,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:31:02,075 INFO L225 Difference]: With dead ends: 127 [2018-10-04 14:31:02,075 INFO L226 Difference]: Without dead ends: 125 [2018-10-04 14:31:02,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.2s impTime 60 [2018-10-04 14:31:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-04 14:31:02,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-04 14:31:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-04 14:31:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-04 14:31:02,083 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-10-04 14:31:02,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:31:02,083 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-04 14:31:02,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 14:31:02,083 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-04 14:31:02,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-04 14:31:02,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:31:02,084 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-10-04 14:31:02,084 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:31:02,084 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:31:02,084 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-10-04 14:31:02,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:31:02,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:31:02,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:02,085 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:31:02,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:02,092 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:31:02,092 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:31:02,092 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 14:31:02,103 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:31:03,664 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-04 14:31:03,664 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:31:03,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:31:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:31:06,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:31:06,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-04 14:31:06,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 14:31:06,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 14:31:06,265 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:31:06,265 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-10-04 14:31:08,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:31:08,967 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-04 14:31:08,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 14:31:08,968 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-10-04 14:31:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:31:08,969 INFO L225 Difference]: With dead ends: 129 [2018-10-04 14:31:08,969 INFO L226 Difference]: Without dead ends: 127 [2018-10-04 14:31:08,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 61 [2018-10-04 14:31:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-04 14:31:08,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-04 14:31:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-04 14:31:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-04 14:31:08,976 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-10-04 14:31:08,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:31:08,977 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-04 14:31:08,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 14:31:08,977 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-04 14:31:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-04 14:31:08,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:31:08,978 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-04 14:31:08,978 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:31:08,978 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:31:08,978 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-10-04 14:31:08,978 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:31:08,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:31:08,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:08,979 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:31:08,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:08,986 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:31:08,986 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:31:08,986 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 14:31:08,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:31:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:31:09,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:31:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:31:11,866 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:31:11,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2018-10-04 14:31:11,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 14:31:11,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 14:31:11,867 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:31:11,867 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-10-04 14:31:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:31:14,832 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-04 14:31:14,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 14:31:14,832 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-04 14:31:14,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:31:14,833 INFO L225 Difference]: With dead ends: 131 [2018-10-04 14:31:14,833 INFO L226 Difference]: Without dead ends: 129 [2018-10-04 14:31:14,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 62 [2018-10-04 14:31:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-04 14:31:14,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-04 14:31:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-04 14:31:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-04 14:31:14,838 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-10-04 14:31:14,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:31:14,839 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-04 14:31:14,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 14:31:14,839 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-04 14:31:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-04 14:31:14,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:31:14,839 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-10-04 14:31:14,839 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:31:14,840 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:31:14,840 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-10-04 14:31:14,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:31:14,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:31:14,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:14,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:31:14,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:14,847 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:31:14,847 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:31:14,847 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:31:14,866 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:31:15,027 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:31:15,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:31:15,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:31:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:31:17,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:31:17,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-04 14:31:17,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 14:31:17,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 14:31:17,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:31:17,644 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-10-04 14:31:20,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:31:20,661 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-04 14:31:20,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 14:31:20,661 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-10-04 14:31:20,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:31:20,662 INFO L225 Difference]: With dead ends: 133 [2018-10-04 14:31:20,663 INFO L226 Difference]: Without dead ends: 131 [2018-10-04 14:31:20,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.3s impTime 63 [2018-10-04 14:31:20,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-04 14:31:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-04 14:31:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-04 14:31:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-04 14:31:20,668 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-10-04 14:31:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:31:20,668 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-04 14:31:20,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 14:31:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-04 14:31:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-04 14:31:20,669 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:31:20,669 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-04 14:31:20,669 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:31:20,669 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:31:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-10-04 14:31:20,670 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:31:20,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:31:20,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:20,671 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:31:20,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:20,679 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:31:20,679 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:31:20,679 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:31:20,694 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:31:33,354 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-04 14:31:33,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:31:33,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:31:36,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:31:36,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:31:36,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-04 14:31:36,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 14:31:36,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 14:31:36,391 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:31:36,391 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-10-04 14:31:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:31:39,362 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-04 14:31:39,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 14:31:39,363 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-04 14:31:39,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:31:39,364 INFO L225 Difference]: With dead ends: 135 [2018-10-04 14:31:39,364 INFO L226 Difference]: Without dead ends: 133 [2018-10-04 14:31:39,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 64 [2018-10-04 14:31:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-04 14:31:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-04 14:31:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-04 14:31:39,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-04 14:31:39,371 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-10-04 14:31:39,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:31:39,372 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-04 14:31:39,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 14:31:39,372 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-04 14:31:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-04 14:31:39,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:31:39,373 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-10-04 14:31:39,373 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:31:39,373 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:31:39,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-10-04 14:31:39,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:31:39,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:31:39,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:39,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:31:39,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:39,382 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:31:39,382 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:31:39,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 14:31:39,397 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 14:31:39,597 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:31:39,597 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:31:39,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:31:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:31:42,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:31:42,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2018-10-04 14:31:42,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 14:31:42,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 14:31:42,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:31:42,583 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-10-04 14:31:45,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:31:45,946 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-04 14:31:45,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 14:31:45,946 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-10-04 14:31:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:31:45,948 INFO L225 Difference]: With dead ends: 137 [2018-10-04 14:31:45,948 INFO L226 Difference]: Without dead ends: 135 [2018-10-04 14:31:45,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime 65 [2018-10-04 14:31:45,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-04 14:31:45,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-04 14:31:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-04 14:31:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-04 14:31:45,956 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-10-04 14:31:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:31:45,956 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-04 14:31:45,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 14:31:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-04 14:31:45,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-04 14:31:45,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:31:45,957 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-04 14:31:45,957 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:31:45,957 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:31:45,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-10-04 14:31:45,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:31:45,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:31:45,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:45,958 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:31:45,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:45,966 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:31:45,966 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:31:45,966 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 14:31:45,982 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 14:31:46,305 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-04 14:31:46,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:31:46,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:31:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:31:49,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:31:49,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-04 14:31:49,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 14:31:49,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 14:31:49,148 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:31:49,148 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-10-04 14:31:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:31:52,507 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-04 14:31:52,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 14:31:52,507 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-04 14:31:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:31:52,508 INFO L225 Difference]: With dead ends: 139 [2018-10-04 14:31:52,508 INFO L226 Difference]: Without dead ends: 137 [2018-10-04 14:31:52,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 66 [2018-10-04 14:31:52,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-04 14:31:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-04 14:31:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-04 14:31:52,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-04 14:31:52,514 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-10-04 14:31:52,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:31:52,514 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-04 14:31:52,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 14:31:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-04 14:31:52,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-04 14:31:52,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:31:52,515 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-10-04 14:31:52,515 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:31:52,515 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:31:52,515 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-10-04 14:31:52,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:31:52,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:31:52,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:52,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:31:52,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:31:52,523 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:31:52,523 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:31:52,523 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 14:31:52,530 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 14:31:53,897 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-04 14:31:53,897 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:31:53,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:31:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:31:56,969 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:31:56,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2018-10-04 14:31:56,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 14:31:56,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 14:31:56,971 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:31:56,971 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-10-04 14:32:00,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:32:00,395 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-04 14:32:00,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 14:32:00,395 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-10-04 14:32:00,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:32:00,396 INFO L225 Difference]: With dead ends: 141 [2018-10-04 14:32:00,396 INFO L226 Difference]: Without dead ends: 139 [2018-10-04 14:32:00,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.7s impTime 67 [2018-10-04 14:32:00,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-04 14:32:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-04 14:32:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 14:32:00,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-04 14:32:00,402 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-10-04 14:32:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:32:00,402 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-04 14:32:00,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 14:32:00,402 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-04 14:32:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 14:32:00,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:32:00,403 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-04 14:32:00,403 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:32:00,403 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:32:00,403 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-10-04 14:32:00,403 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:32:00,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:32:00,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:32:00,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:32:00,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:32:00,411 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:32:00,411 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:32:00,411 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 14:32:00,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:32:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 14:32:00,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:32:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:32:03,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:32:03,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2018-10-04 14:32:03,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 14:32:03,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 14:32:03,669 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:32:03,669 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-10-04 14:32:07,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:32:07,217 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-04 14:32:07,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 14:32:07,218 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-04 14:32:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:32:07,219 INFO L225 Difference]: With dead ends: 143 [2018-10-04 14:32:07,219 INFO L226 Difference]: Without dead ends: 141 [2018-10-04 14:32:07,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime 68 [2018-10-04 14:32:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-04 14:32:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-04 14:32:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-04 14:32:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-04 14:32:07,228 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-10-04 14:32:07,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:32:07,228 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-04 14:32:07,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 14:32:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-04 14:32:07,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-04 14:32:07,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:32:07,229 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-10-04 14:32:07,229 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:32:07,229 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:32:07,229 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-10-04 14:32:07,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:32:07,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:32:07,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:32:07,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 14:32:07,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:32:07,237 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:32:07,237 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:32:07,237 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 14:32:07,253 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 14:32:07,489 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 14:32:07,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:32:07,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:32:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:32:10,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:32:10,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2018-10-04 14:32:10,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 14:32:10,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 14:32:10,551 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:32:10,551 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-10-04 14:32:14,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:32:14,185 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-04 14:32:14,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 14:32:14,185 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-10-04 14:32:14,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:32:14,187 INFO L225 Difference]: With dead ends: 145 [2018-10-04 14:32:14,187 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 14:32:14,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.7s impTime 69 [2018-10-04 14:32:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 14:32:14,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-04 14:32:14,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-04 14:32:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-04 14:32:14,195 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-10-04 14:32:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:32:14,195 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-04 14:32:14,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 14:32:14,195 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-04 14:32:14,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-04 14:32:14,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:32:14,196 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-04 14:32:14,196 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:32:14,196 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:32:14,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-10-04 14:32:14,196 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:32:14,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:32:14,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:32:14,197 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:32:14,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:32:14,205 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:32:14,205 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:32:14,205 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 14:32:14,215 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 14:32:34,283 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-04 14:32:34,283 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:32:34,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:32:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 14:32:37,743 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 14:32:37,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-04 14:32:37,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 14:32:37,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 14:32:37,744 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 14:32:37,744 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-10-04 14:32:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 14:32:41,391 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-04 14:32:41,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 14:32:41,391 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-10-04 14:32:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 14:32:41,392 INFO L225 Difference]: With dead ends: 147 [2018-10-04 14:32:41,392 INFO L226 Difference]: Without dead ends: 145 [2018-10-04 14:32:41,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 3.0s impTime 70 [2018-10-04 14:32:41,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-04 14:32:41,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-04 14:32:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-04 14:32:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-04 14:32:41,398 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-10-04 14:32:41,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 14:32:41,398 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-04 14:32:41,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 14:32:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-04 14:32:41,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-04 14:32:41,399 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 14:32:41,399 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-10-04 14:32:41,400 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 14:32:41,400 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 14:32:41,400 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-10-04 14:32:41,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 14:32:41,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 14:32:41,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:32:41,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 14:32:41,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 14:32:41,409 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 14:32:41,409 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 14:32:41,409 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 14:32:41,420 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... [2018-10-04 14:32:41,665 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 14:32:41,666 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 14:32:41,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 14:32:41,681 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-04 14:32:41,881 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 14:32:41,882 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 14:32:41,887 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 14:32:41,888 INFO L202 PluginConnector]: Adding new model gauss_sum.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 02:32:41 BoogieIcfgContainer [2018-10-04 14:32:41,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 14:32:41,889 INFO L168 Benchmark]: Toolchain (without parser) took 256209.48 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 76.5 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 363.3 MB). Peak memory consumption was 439.8 MB. Max. memory is 7.1 GB. [2018-10-04 14:32:41,890 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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 14:32:41,891 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.03 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 14:32:41,891 INFO L168 Benchmark]: Boogie Preprocessor took 18.88 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 14:32:41,891 INFO L168 Benchmark]: RCFGBuilder took 242.34 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 14:32:41,892 INFO L168 Benchmark]: TraceAbstraction took 255906.34 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 76.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 342.1 MB). Peak memory consumption was 418.7 MB. Max. memory is 7.1 GB. [2018-10-04 14:32:41,895 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 0.21 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 38.03 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 18.88 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 242.34 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 255906.34 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 76.5 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 342.1 MB). Peak memory consumption was 418.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 45). Cancelled while BasicCegarLoop was analyzing trace of length 145 with TraceHistMax 71, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 2 quantified variables from 4 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 255.8s OverallTime, 71 OverallIterations, 71 TraceHistogramMax, 93.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2695 SDtfs, 0 SDslu, 116796 SDs, 0 SdLazy, 121765 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5040 GetRequests, 2555 SyntacticMatches, 0 SemanticMatches, 2485 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 70 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 62.4s SatisfiabilityAnalysisTime, 94.5s InterpolantComputationTime, 5110 NumberOfCodeBlocks, 5110 NumberOfCodeBlocksAsserted, 1306 NumberOfCheckSat, 5040 ConstructedInterpolants, 0 QuantifiedInterpolants, 3343622 SizeOfPredicates, 347 NumberOfNonLiveVariables, 15820 ConjunctsInSsa, 10422 ConjunctsInUnsatCore, 70 InterpolantComputations, 1 PerfectInterpolantSequences, 0/114310 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gauss_sum.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_14-32-41-906.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gauss_sum.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_14-32-41-906.csv Completed graceful shutdown