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/real-life/threadpooling_product_WithProcedures.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 10:42:53,579 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:42:53,581 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:42:53,593 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 10:42:53,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 10:42:53,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 10:42:53,596 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 10:42:53,598 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 10:42:53,599 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 10:42:53,600 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 10:42:53,601 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-30 10:42:53,601 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-30 10:42:53,602 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-30 10:42:53,603 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-30 10:42:53,604 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-30 10:42:53,605 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-30 10:42:53,606 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-30 10:42:53,608 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-30 10:42:53,610 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-30 10:42:53,611 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-30 10:42:53,612 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-30 10:42:53,614 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-30 10:42:53,616 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-30 10:42:53,625 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-30 10:42:53,640 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:42:53,640 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:42:53,641 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:42:53,641 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:42:53,642 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:42:53,642 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:42:53,642 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:42:53,643 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:42:53,643 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:42:53,643 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:42:53,643 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:42:53,643 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:42:53,644 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:42:53,644 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:42:53,644 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:42:53,644 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:42:53,644 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:42:53,645 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:42:53,645 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:42:53,645 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:42:53,645 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:42:53,646 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:42:53,646 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:42:53,646 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:42:53,646 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:42:53,646 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:42:53,647 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:42:53,647 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:42:53,647 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:42:53,647 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:42:53,647 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 10:42:53,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:42:53,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:42:53,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:42:53,715 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:42:53,715 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:42:53,716 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl [2018-09-30 10:42:53,717 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithProcedures.bpl' [2018-09-30 10:42:53,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:42:53,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:42:53,798 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:42:53,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:42:53,798 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:42:53,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:53" (1/1) ... [2018-09-30 10:42:53,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:53" (1/1) ... [2018-09-30 10:42:53,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:42:53,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:42:53,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:42:53,847 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:42:53,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:53" (1/1) ... [2018-09-30 10:42:53,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:53" (1/1) ... [2018-09-30 10:42:53,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:53" (1/1) ... [2018-09-30 10:42:53,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:53" (1/1) ... [2018-09-30 10:42:53,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:53" (1/1) ... [2018-09-30 10:42:53,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:53" (1/1) ... [2018-09-30 10:42:53,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:53" (1/1) ... [2018-09-30 10:42:53,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:42:53,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:42:53,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:42:53,885 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:42:53,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:42:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure l1l0 [2018-09-30 10:42:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure l1l0 [2018-09-30 10:42:53,970 INFO L130 BoogieDeclarations]: Found specification of procedure l0l1 [2018-09-30 10:42:53,970 INFO L138 BoogieDeclarations]: Found implementation of procedure l0l1 [2018-09-30 10:42:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure l0l0 [2018-09-30 10:42:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure l0l0 [2018-09-30 10:42:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-30 10:42:53,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-30 10:42:53,971 INFO L130 BoogieDeclarations]: Found specification of procedure l1l1 [2018-09-30 10:42:53,972 INFO L138 BoogieDeclarations]: Found implementation of procedure l1l1 [2018-09-30 10:42:54,585 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-30 10:42:54,585 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:42:54 BoogieIcfgContainer [2018-09-30 10:42:54,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:42:54,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:42:54,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:42:54,590 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:42:54,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:42:53" (1/2) ... [2018-09-30 10:42:54,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7f03e7 and model type threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:42:54, skipping insertion in model container [2018-09-30 10:42:54,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:42:54" (2/2) ... [2018-09-30 10:42:54,594 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product_WithProcedures.bpl [2018-09-30 10:42:54,605 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:42:54,613 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-09-30 10:42:54,662 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:42:54,663 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:42:54,663 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:42:54,664 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:42:54,664 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:42:54,664 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:42:54,664 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:42:54,664 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:42:54,664 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:42:54,686 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-09-30 10:42:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-30 10:42:54,691 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:54,692 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:42:54,694 INFO L423 AbstractCegarLoop]: === Iteration 1 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:54,701 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1282157605, now seen corresponding path program 1 times [2018-09-30 10:42:54,704 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:54,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:54,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:54,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:54,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:42:54,980 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:42:54,981 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-30 10:42:54,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 10:42:54,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 10:42:54,996 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:54,999 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2018-09-30 10:42:57,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:57,014 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2018-09-30 10:42:57,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 10:42:57,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-09-30 10:42:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:57,034 INFO L225 Difference]: With dead ends: 72 [2018-09-30 10:42:57,034 INFO L226 Difference]: Without dead ends: 70 [2018-09-30 10:42:57,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:57,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-09-30 10:42:57,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 48. [2018-09-30 10:42:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-30 10:42:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2018-09-30 10:42:57,089 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 7 [2018-09-30 10:42:57,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:57,089 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2018-09-30 10:42:57,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 10:42:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2018-09-30 10:42:57,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-30 10:42:57,090 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:57,091 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:42:57,091 INFO L423 AbstractCegarLoop]: === Iteration 2 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:57,092 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:57,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1272619553, now seen corresponding path program 1 times [2018-09-30 10:42:57,092 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:57,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:57,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:57,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:57,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:57,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:42:57,201 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:42:57,201 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-30 10:42:57,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 10:42:57,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 10:42:57,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:57,204 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2018-09-30 10:42:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:42:58,213 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2018-09-30 10:42:58,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 10:42:58,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-09-30 10:42:58,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:42:58,225 INFO L225 Difference]: With dead ends: 81 [2018-09-30 10:42:58,225 INFO L226 Difference]: Without dead ends: 79 [2018-09-30 10:42:58,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:42:58,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-30 10:42:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 57. [2018-09-30 10:42:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-30 10:42:58,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2018-09-30 10:42:58,251 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 78 transitions. Word has length 7 [2018-09-30 10:42:58,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:42:58,251 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 78 transitions. [2018-09-30 10:42:58,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 10:42:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 78 transitions. [2018-09-30 10:42:58,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 10:42:58,253 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:42:58,253 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:42:58,255 INFO L423 AbstractCegarLoop]: === Iteration 3 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:42:58,256 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:42:58,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1601446133, now seen corresponding path program 1 times [2018-09-30 10:42:58,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:42:58,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:42:58,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:58,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:42:58,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:42:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:42:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:42:58,633 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:42:58,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-30 10:42:58,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 10:42:58,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 10:42:58,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:42:58,636 INFO L87 Difference]: Start difference. First operand 57 states and 78 transitions. Second operand 7 states. [2018-09-30 10:43:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:00,538 INFO L93 Difference]: Finished difference Result 122 states and 175 transitions. [2018-09-30 10:43:00,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 10:43:00,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-09-30 10:43:00,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:00,544 INFO L225 Difference]: With dead ends: 122 [2018-09-30 10:43:00,544 INFO L226 Difference]: Without dead ends: 120 [2018-09-30 10:43:00,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:00,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-09-30 10:43:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 73. [2018-09-30 10:43:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-30 10:43:00,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 103 transitions. [2018-09-30 10:43:00,562 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 103 transitions. Word has length 10 [2018-09-30 10:43:00,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:00,562 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 103 transitions. [2018-09-30 10:43:00,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 10:43:00,563 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 103 transitions. [2018-09-30 10:43:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 10:43:00,564 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:00,564 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:00,565 INFO L423 AbstractCegarLoop]: === Iteration 4 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:00,565 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:00,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1152651256, now seen corresponding path program 1 times [2018-09-30 10:43:00,565 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:00,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:00,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:00,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:00,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:00,679 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:00,680 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:00,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:00,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:00,898 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-30 10:43:00,898 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2018-09-30 10:43:00,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 10:43:00,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 10:43:00,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:00,899 INFO L87 Difference]: Start difference. First operand 73 states and 103 transitions. Second operand 9 states. [2018-09-30 10:43:03,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:03,033 INFO L93 Difference]: Finished difference Result 168 states and 243 transitions. [2018-09-30 10:43:03,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 10:43:03,033 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2018-09-30 10:43:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:03,035 INFO L225 Difference]: With dead ends: 168 [2018-09-30 10:43:03,036 INFO L226 Difference]: Without dead ends: 121 [2018-09-30 10:43:03,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-30 10:43:03,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 97. [2018-09-30 10:43:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-30 10:43:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 136 transitions. [2018-09-30 10:43:03,058 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 136 transitions. Word has length 10 [2018-09-30 10:43:03,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:03,058 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 136 transitions. [2018-09-30 10:43:03,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 10:43:03,058 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 136 transitions. [2018-09-30 10:43:03,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 10:43:03,060 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:03,060 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:03,060 INFO L423 AbstractCegarLoop]: === Iteration 5 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:03,061 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:03,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1536370777, now seen corresponding path program 1 times [2018-09-30 10:43:03,061 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:03,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:03,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:03,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:03,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:03,194 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:03,195 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:03,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:03,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:03,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:03,367 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:03,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2018-09-30 10:43:03,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 10:43:03,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 10:43:03,368 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:03,368 INFO L87 Difference]: Start difference. First operand 97 states and 136 transitions. Second operand 10 states. [2018-09-30 10:43:05,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:05,313 INFO L93 Difference]: Finished difference Result 164 states and 232 transitions. [2018-09-30 10:43:05,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 10:43:05,314 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2018-09-30 10:43:05,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:05,317 INFO L225 Difference]: With dead ends: 164 [2018-09-30 10:43:05,317 INFO L226 Difference]: Without dead ends: 162 [2018-09-30 10:43:05,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:05,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-09-30 10:43:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 109. [2018-09-30 10:43:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 10:43:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 154 transitions. [2018-09-30 10:43:05,338 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 154 transitions. Word has length 11 [2018-09-30 10:43:05,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:05,339 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 154 transitions. [2018-09-30 10:43:05,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 10:43:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 154 transitions. [2018-09-30 10:43:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 10:43:05,340 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:05,340 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:05,341 INFO L423 AbstractCegarLoop]: === Iteration 6 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:05,341 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:05,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1150793287, now seen corresponding path program 1 times [2018-09-30 10:43:05,341 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:05,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:05,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:05,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:05,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:05,448 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:05,449 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:05,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:05,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:05,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:05,601 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:05,601 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2018-09-30 10:43:05,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 10:43:05,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 10:43:05,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:05,602 INFO L87 Difference]: Start difference. First operand 109 states and 154 transitions. Second operand 10 states. [2018-09-30 10:43:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:07,576 INFO L93 Difference]: Finished difference Result 181 states and 254 transitions. [2018-09-30 10:43:07,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 10:43:07,578 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2018-09-30 10:43:07,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:07,579 INFO L225 Difference]: With dead ends: 181 [2018-09-30 10:43:07,579 INFO L226 Difference]: Without dead ends: 179 [2018-09-30 10:43:07,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:07,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-30 10:43:07,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 117. [2018-09-30 10:43:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-30 10:43:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 164 transitions. [2018-09-30 10:43:07,604 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 164 transitions. Word has length 11 [2018-09-30 10:43:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:07,605 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 164 transitions. [2018-09-30 10:43:07,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 10:43:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 164 transitions. [2018-09-30 10:43:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-30 10:43:07,606 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:07,607 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:07,607 INFO L423 AbstractCegarLoop]: === Iteration 7 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:07,607 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:07,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1829652612, now seen corresponding path program 1 times [2018-09-30 10:43:07,608 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:07,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:07,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:07,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:07,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:07,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:07,842 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:07,842 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:07,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:07,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:07,967 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-30 10:43:07,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2018-09-30 10:43:07,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 10:43:07,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 10:43:07,968 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:07,968 INFO L87 Difference]: Start difference. First operand 117 states and 164 transitions. Second operand 9 states. [2018-09-30 10:43:09,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:09,803 INFO L93 Difference]: Finished difference Result 217 states and 304 transitions. [2018-09-30 10:43:09,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 10:43:09,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2018-09-30 10:43:09,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:09,805 INFO L225 Difference]: With dead ends: 217 [2018-09-30 10:43:09,805 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 10:43:09,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 10:43:09,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 119. [2018-09-30 10:43:09,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 10:43:09,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 160 transitions. [2018-09-30 10:43:09,829 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 160 transitions. Word has length 13 [2018-09-30 10:43:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:09,829 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 160 transitions. [2018-09-30 10:43:09,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 10:43:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 160 transitions. [2018-09-30 10:43:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:43:09,831 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:09,831 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:09,831 INFO L423 AbstractCegarLoop]: === Iteration 8 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:09,831 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:09,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1433054771, now seen corresponding path program 1 times [2018-09-30 10:43:09,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:09,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:09,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:09,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:09,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:09,959 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:09,959 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:09,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:10,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:10,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:10,218 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:10,218 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 12 [2018-09-30 10:43:10,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:43:10,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:43:10,219 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:10,219 INFO L87 Difference]: Start difference. First operand 119 states and 160 transitions. Second operand 13 states. [2018-09-30 10:43:14,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:14,451 INFO L93 Difference]: Finished difference Result 194 states and 266 transitions. [2018-09-30 10:43:14,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 10:43:14,454 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2018-09-30 10:43:14,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:14,455 INFO L225 Difference]: With dead ends: 194 [2018-09-30 10:43:14,456 INFO L226 Difference]: Without dead ends: 192 [2018-09-30 10:43:14,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-09-30 10:43:14,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 181. [2018-09-30 10:43:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-09-30 10:43:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 257 transitions. [2018-09-30 10:43:14,499 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 257 transitions. Word has length 14 [2018-09-30 10:43:14,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:14,499 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 257 transitions. [2018-09-30 10:43:14,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:43:14,500 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 257 transitions. [2018-09-30 10:43:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:43:14,502 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:14,502 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:14,502 INFO L423 AbstractCegarLoop]: === Iteration 9 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:14,503 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:14,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1436992942, now seen corresponding path program 1 times [2018-09-30 10:43:14,503 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:14,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:14,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:14,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:14,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:14,601 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:14,602 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:14,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:14,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:14,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:14,968 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:14,968 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 12 [2018-09-30 10:43:14,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 10:43:14,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 10:43:14,969 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:14,969 INFO L87 Difference]: Start difference. First operand 181 states and 257 transitions. Second operand 14 states. [2018-09-30 10:43:19,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:19,362 INFO L93 Difference]: Finished difference Result 246 states and 347 transitions. [2018-09-30 10:43:19,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 10:43:19,364 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-09-30 10:43:19,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:19,366 INFO L225 Difference]: With dead ends: 246 [2018-09-30 10:43:19,366 INFO L226 Difference]: Without dead ends: 244 [2018-09-30 10:43:19,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:19,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2018-09-30 10:43:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 193. [2018-09-30 10:43:19,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-09-30 10:43:19,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 274 transitions. [2018-09-30 10:43:19,399 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 274 transitions. Word has length 14 [2018-09-30 10:43:19,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:19,399 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 274 transitions. [2018-09-30 10:43:19,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 10:43:19,399 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 274 transitions. [2018-09-30 10:43:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:43:19,400 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:19,400 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:19,401 INFO L423 AbstractCegarLoop]: === Iteration 10 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:19,401 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:19,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1436993326, now seen corresponding path program 1 times [2018-09-30 10:43:19,401 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:19,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:19,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:19,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:19,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:19,506 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:19,506 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:19,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:19,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:19,972 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:19,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2018-09-30 10:43:19,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 10:43:19,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 10:43:19,973 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:19,973 INFO L87 Difference]: Start difference. First operand 193 states and 274 transitions. Second operand 14 states. [2018-09-30 10:43:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:25,125 INFO L93 Difference]: Finished difference Result 288 states and 406 transitions. [2018-09-30 10:43:25,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 10:43:25,130 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-09-30 10:43:25,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:25,132 INFO L225 Difference]: With dead ends: 288 [2018-09-30 10:43:25,132 INFO L226 Difference]: Without dead ends: 286 [2018-09-30 10:43:25,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:25,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-09-30 10:43:25,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 221. [2018-09-30 10:43:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-09-30 10:43:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 315 transitions. [2018-09-30 10:43:25,165 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 315 transitions. Word has length 14 [2018-09-30 10:43:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:25,166 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 315 transitions. [2018-09-30 10:43:25,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 10:43:25,166 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 315 transitions. [2018-09-30 10:43:25,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:43:25,169 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:25,170 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:25,170 INFO L423 AbstractCegarLoop]: === Iteration 11 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:25,170 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:25,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1791986342, now seen corresponding path program 1 times [2018-09-30 10:43:25,170 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:25,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:25,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:25,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:25,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:25,288 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:25,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:25,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:25,448 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:25,448 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2018-09-30 10:43:25,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 10:43:25,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 10:43:25,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:25,449 INFO L87 Difference]: Start difference. First operand 221 states and 315 transitions. Second operand 14 states. [2018-09-30 10:43:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:28,802 INFO L93 Difference]: Finished difference Result 314 states and 443 transitions. [2018-09-30 10:43:28,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:43:28,807 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-09-30 10:43:28,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:28,809 INFO L225 Difference]: With dead ends: 314 [2018-09-30 10:43:28,809 INFO L226 Difference]: Without dead ends: 312 [2018-09-30 10:43:28,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:28,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-09-30 10:43:28,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 243. [2018-09-30 10:43:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-09-30 10:43:28,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 349 transitions. [2018-09-30 10:43:28,843 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 349 transitions. Word has length 14 [2018-09-30 10:43:28,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:28,844 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 349 transitions. [2018-09-30 10:43:28,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 10:43:28,844 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 349 transitions. [2018-09-30 10:43:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:43:28,845 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:28,845 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:28,845 INFO L423 AbstractCegarLoop]: === Iteration 12 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:28,845 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:28,845 INFO L82 PathProgramCache]: Analyzing trace with hash 844488035, now seen corresponding path program 1 times [2018-09-30 10:43:28,846 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:28,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:28,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:28,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:28,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:28,946 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:28,946 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:28,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:28,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:29,109 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:29,109 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 12 [2018-09-30 10:43:29,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:43:29,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:43:29,109 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:29,110 INFO L87 Difference]: Start difference. First operand 243 states and 349 transitions. Second operand 13 states. [2018-09-30 10:43:31,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:31,678 INFO L93 Difference]: Finished difference Result 322 states and 462 transitions. [2018-09-30 10:43:31,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 10:43:31,685 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2018-09-30 10:43:31,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:31,687 INFO L225 Difference]: With dead ends: 322 [2018-09-30 10:43:31,687 INFO L226 Difference]: Without dead ends: 320 [2018-09-30 10:43:31,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:31,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-09-30 10:43:31,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 302. [2018-09-30 10:43:31,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-09-30 10:43:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 444 transitions. [2018-09-30 10:43:31,746 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 444 transitions. Word has length 14 [2018-09-30 10:43:31,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:31,746 INFO L480 AbstractCegarLoop]: Abstraction has 302 states and 444 transitions. [2018-09-30 10:43:31,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:43:31,747 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 444 transitions. [2018-09-30 10:43:31,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:43:31,747 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:31,750 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:31,751 INFO L423 AbstractCegarLoop]: === Iteration 13 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:31,751 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:31,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1052420626, now seen corresponding path program 1 times [2018-09-30 10:43:31,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:31,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:31,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:31,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:31,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:31,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:31,908 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:31,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:31,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:32,072 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:32,073 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2018-09-30 10:43:32,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 10:43:32,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 10:43:32,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:32,074 INFO L87 Difference]: Start difference. First operand 302 states and 444 transitions. Second operand 14 states. [2018-09-30 10:43:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:36,320 INFO L93 Difference]: Finished difference Result 378 states and 544 transitions. [2018-09-30 10:43:36,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:43:36,320 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-09-30 10:43:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:36,323 INFO L225 Difference]: With dead ends: 378 [2018-09-30 10:43:36,323 INFO L226 Difference]: Without dead ends: 376 [2018-09-30 10:43:36,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:36,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-09-30 10:43:36,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 301. [2018-09-30 10:43:36,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-09-30 10:43:36,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 443 transitions. [2018-09-30 10:43:36,372 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 443 transitions. Word has length 14 [2018-09-30 10:43:36,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:36,373 INFO L480 AbstractCegarLoop]: Abstraction has 301 states and 443 transitions. [2018-09-30 10:43:36,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 10:43:36,373 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 443 transitions. [2018-09-30 10:43:36,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:43:36,374 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:36,375 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:36,375 INFO L423 AbstractCegarLoop]: === Iteration 14 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:36,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:36,375 INFO L82 PathProgramCache]: Analyzing trace with hash 697427610, now seen corresponding path program 1 times [2018-09-30 10:43:36,375 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:36,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:36,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:36,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:36,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:36,463 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:36,463 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:36,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:36,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:36,690 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:36,690 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 15 [2018-09-30 10:43:36,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:43:36,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:43:36,691 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:36,691 INFO L87 Difference]: Start difference. First operand 301 states and 443 transitions. Second operand 16 states. [2018-09-30 10:43:42,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:42,213 INFO L93 Difference]: Finished difference Result 395 states and 572 transitions. [2018-09-30 10:43:42,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 10:43:42,213 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 14 [2018-09-30 10:43:42,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:42,215 INFO L225 Difference]: With dead ends: 395 [2018-09-30 10:43:42,215 INFO L226 Difference]: Without dead ends: 393 [2018-09-30 10:43:42,216 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:42,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-09-30 10:43:42,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 312. [2018-09-30 10:43:42,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-09-30 10:43:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 459 transitions. [2018-09-30 10:43:42,270 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 459 transitions. Word has length 14 [2018-09-30 10:43:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:42,270 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 459 transitions. [2018-09-30 10:43:42,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 10:43:42,270 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 459 transitions. [2018-09-30 10:43:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:43:42,271 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:42,271 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:42,272 INFO L423 AbstractCegarLoop]: === Iteration 15 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:42,272 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:42,272 INFO L82 PathProgramCache]: Analyzing trace with hash 697427226, now seen corresponding path program 1 times [2018-09-30 10:43:42,272 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:42,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:42,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:42,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:42,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:42,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:42,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:42,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:42,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:42,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:42,569 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:42,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 13 [2018-09-30 10:43:42,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:43:42,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:43:42,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:42,570 INFO L87 Difference]: Start difference. First operand 312 states and 459 transitions. Second operand 15 states. [2018-09-30 10:43:47,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:47,418 INFO L93 Difference]: Finished difference Result 383 states and 560 transitions. [2018-09-30 10:43:47,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 10:43:47,419 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-09-30 10:43:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:47,423 INFO L225 Difference]: With dead ends: 383 [2018-09-30 10:43:47,423 INFO L226 Difference]: Without dead ends: 381 [2018-09-30 10:43:47,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-09-30 10:43:47,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 328. [2018-09-30 10:43:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-09-30 10:43:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 482 transitions. [2018-09-30 10:43:47,495 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 482 transitions. Word has length 14 [2018-09-30 10:43:47,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:47,495 INFO L480 AbstractCegarLoop]: Abstraction has 328 states and 482 transitions. [2018-09-30 10:43:47,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:43:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 482 transitions. [2018-09-30 10:43:47,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-30 10:43:47,496 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:47,497 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:47,497 INFO L423 AbstractCegarLoop]: === Iteration 16 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:47,497 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:47,497 INFO L82 PathProgramCache]: Analyzing trace with hash 406900684, now seen corresponding path program 1 times [2018-09-30 10:43:47,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:47,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:47,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:47,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:47,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:47,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:47,908 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:47,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:47,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:48,106 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:48,106 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2018-09-30 10:43:48,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:43:48,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:43:48,106 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:48,107 INFO L87 Difference]: Start difference. First operand 328 states and 482 transitions. Second operand 16 states. [2018-09-30 10:43:52,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:52,212 INFO L93 Difference]: Finished difference Result 429 states and 618 transitions. [2018-09-30 10:43:52,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 10:43:52,212 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2018-09-30 10:43:52,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:52,215 INFO L225 Difference]: With dead ends: 429 [2018-09-30 10:43:52,215 INFO L226 Difference]: Without dead ends: 427 [2018-09-30 10:43:52,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:52,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-09-30 10:43:52,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 242. [2018-09-30 10:43:52,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-09-30 10:43:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 351 transitions. [2018-09-30 10:43:52,267 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 351 transitions. Word has length 17 [2018-09-30 10:43:52,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:52,267 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 351 transitions. [2018-09-30 10:43:52,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 10:43:52,267 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 351 transitions. [2018-09-30 10:43:52,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-30 10:43:52,268 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:52,269 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:52,269 INFO L423 AbstractCegarLoop]: === Iteration 17 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:52,269 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:52,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2143481530, now seen corresponding path program 1 times [2018-09-30 10:43:52,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:52,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:52,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:52,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:52,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:53,359 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:53,359 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:53,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:53,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:53,678 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:53,678 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2018-09-30 10:43:53,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:43:53,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:43:53,679 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:53,679 INFO L87 Difference]: Start difference. First operand 242 states and 351 transitions. Second operand 16 states. [2018-09-30 10:43:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:57,720 INFO L93 Difference]: Finished difference Result 330 states and 466 transitions. [2018-09-30 10:43:57,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 10:43:57,720 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 17 [2018-09-30 10:43:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:57,722 INFO L225 Difference]: With dead ends: 330 [2018-09-30 10:43:57,722 INFO L226 Difference]: Without dead ends: 328 [2018-09-30 10:43:57,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-09-30 10:43:57,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 158. [2018-09-30 10:43:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-09-30 10:43:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 226 transitions. [2018-09-30 10:43:57,769 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 226 transitions. Word has length 17 [2018-09-30 10:43:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:57,769 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 226 transitions. [2018-09-30 10:43:57,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 10:43:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 226 transitions. [2018-09-30 10:43:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:43:57,770 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:57,771 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:57,771 INFO L423 AbstractCegarLoop]: === Iteration 18 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:57,771 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:57,771 INFO L82 PathProgramCache]: Analyzing trace with hash -653821292, now seen corresponding path program 1 times [2018-09-30 10:43:57,771 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:57,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:57,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:57,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:57,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:58,293 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:58,293 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:58,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:58,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:58,435 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:58,435 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2018-09-30 10:43:58,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:43:58,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:43:58,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:58,436 INFO L87 Difference]: Start difference. First operand 158 states and 226 transitions. Second operand 13 states. [2018-09-30 10:44:00,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:00,725 INFO L93 Difference]: Finished difference Result 271 states and 380 transitions. [2018-09-30 10:44:00,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 10:44:00,725 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2018-09-30 10:44:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:00,727 INFO L225 Difference]: With dead ends: 271 [2018-09-30 10:44:00,727 INFO L226 Difference]: Without dead ends: 269 [2018-09-30 10:44:00,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:00,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-09-30 10:44:00,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 180. [2018-09-30 10:44:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-09-30 10:44:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 258 transitions. [2018-09-30 10:44:00,780 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 258 transitions. Word has length 18 [2018-09-30 10:44:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:00,780 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 258 transitions. [2018-09-30 10:44:00,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:44:00,780 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 258 transitions. [2018-09-30 10:44:00,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:44:00,781 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:00,781 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:00,782 INFO L423 AbstractCegarLoop]: === Iteration 19 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:00,782 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:00,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1014964826, now seen corresponding path program 1 times [2018-09-30 10:44:00,782 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:00,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:00,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:00,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:00,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:00,914 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:00,914 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:00,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:00,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:01,085 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-30 10:44:01,085 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2018-09-30 10:44:01,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:44:01,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:44:01,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:01,086 INFO L87 Difference]: Start difference. First operand 180 states and 258 transitions. Second operand 13 states. [2018-09-30 10:44:08,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:08,769 INFO L93 Difference]: Finished difference Result 741 states and 1047 transitions. [2018-09-30 10:44:08,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-30 10:44:08,769 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2018-09-30 10:44:08,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:08,771 INFO L225 Difference]: With dead ends: 741 [2018-09-30 10:44:08,772 INFO L226 Difference]: Without dead ends: 564 [2018-09-30 10:44:08,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2018-09-30 10:44:08,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 341. [2018-09-30 10:44:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-09-30 10:44:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 486 transitions. [2018-09-30 10:44:08,902 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 486 transitions. Word has length 18 [2018-09-30 10:44:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:08,902 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 486 transitions. [2018-09-30 10:44:08,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:44:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 486 transitions. [2018-09-30 10:44:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:44:08,903 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:08,903 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:08,903 INFO L423 AbstractCegarLoop]: === Iteration 20 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:08,904 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:08,904 INFO L82 PathProgramCache]: Analyzing trace with hash -155045024, now seen corresponding path program 1 times [2018-09-30 10:44:08,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:08,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:08,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:08,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:08,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:09,013 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:09,013 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:09,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:09,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:09,192 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:09,193 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2018-09-30 10:44:09,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:44:09,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:44:09,193 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:09,193 INFO L87 Difference]: Start difference. First operand 341 states and 486 transitions. Second operand 13 states. [2018-09-30 10:44:12,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:12,988 INFO L93 Difference]: Finished difference Result 809 states and 1155 transitions. [2018-09-30 10:44:12,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 10:44:12,996 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2018-09-30 10:44:12,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:12,998 INFO L225 Difference]: With dead ends: 809 [2018-09-30 10:44:12,999 INFO L226 Difference]: Without dead ends: 470 [2018-09-30 10:44:13,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:13,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2018-09-30 10:44:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 368. [2018-09-30 10:44:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-09-30 10:44:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 523 transitions. [2018-09-30 10:44:13,152 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 523 transitions. Word has length 18 [2018-09-30 10:44:13,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:13,152 INFO L480 AbstractCegarLoop]: Abstraction has 368 states and 523 transitions. [2018-09-30 10:44:13,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:44:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 523 transitions. [2018-09-30 10:44:13,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:44:13,153 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:13,153 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:13,153 INFO L423 AbstractCegarLoop]: === Iteration 21 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:13,154 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:13,154 INFO L82 PathProgramCache]: Analyzing trace with hash 393788879, now seen corresponding path program 1 times [2018-09-30 10:44:13,154 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:13,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:13,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:13,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:13,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:13,374 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:13,374 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:13,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:13,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:13,528 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:13,528 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-09-30 10:44:13,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:44:13,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:44:13,529 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:13,529 INFO L87 Difference]: Start difference. First operand 368 states and 523 transitions. Second operand 13 states. [2018-09-30 10:44:19,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:19,100 INFO L93 Difference]: Finished difference Result 1106 states and 1568 transitions. [2018-09-30 10:44:19,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 10:44:19,100 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2018-09-30 10:44:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:19,103 INFO L225 Difference]: With dead ends: 1106 [2018-09-30 10:44:19,103 INFO L226 Difference]: Without dead ends: 724 [2018-09-30 10:44:19,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2018-09-30 10:44:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 519. [2018-09-30 10:44:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2018-09-30 10:44:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 739 transitions. [2018-09-30 10:44:19,299 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 739 transitions. Word has length 18 [2018-09-30 10:44:19,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:19,300 INFO L480 AbstractCegarLoop]: Abstraction has 519 states and 739 transitions. [2018-09-30 10:44:19,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:44:19,300 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 739 transitions. [2018-09-30 10:44:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:44:19,301 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:19,301 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:19,301 INFO L423 AbstractCegarLoop]: === Iteration 22 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:19,301 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:19,302 INFO L82 PathProgramCache]: Analyzing trace with hash -216264799, now seen corresponding path program 1 times [2018-09-30 10:44:19,302 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:19,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:19,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:19,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:19,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:19,458 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:19,458 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:19,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:19,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:19,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:19,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2018-09-30 10:44:19,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 10:44:19,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 10:44:19,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:19,630 INFO L87 Difference]: Start difference. First operand 519 states and 739 transitions. Second operand 11 states. [2018-09-30 10:44:22,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:22,188 INFO L93 Difference]: Finished difference Result 711 states and 1002 transitions. [2018-09-30 10:44:22,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:44:22,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2018-09-30 10:44:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:22,192 INFO L225 Difference]: With dead ends: 711 [2018-09-30 10:44:22,192 INFO L226 Difference]: Without dead ends: 709 [2018-09-30 10:44:22,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:22,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2018-09-30 10:44:22,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 498. [2018-09-30 10:44:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2018-09-30 10:44:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 704 transitions. [2018-09-30 10:44:22,366 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 704 transitions. Word has length 18 [2018-09-30 10:44:22,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:22,366 INFO L480 AbstractCegarLoop]: Abstraction has 498 states and 704 transitions. [2018-09-30 10:44:22,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 10:44:22,366 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 704 transitions. [2018-09-30 10:44:22,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:44:22,367 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:22,367 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:22,368 INFO L423 AbstractCegarLoop]: === Iteration 23 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:22,368 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:22,368 INFO L82 PathProgramCache]: Analyzing trace with hash 983482113, now seen corresponding path program 1 times [2018-09-30 10:44:22,368 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:22,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:22,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:22,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:22,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:22,517 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:22,517 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:22,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:22,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:22,656 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-30 10:44:22,656 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2018-09-30 10:44:22,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:44:22,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:44:22,657 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:22,657 INFO L87 Difference]: Start difference. First operand 498 states and 704 transitions. Second operand 13 states. [2018-09-30 10:44:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:26,592 INFO L93 Difference]: Finished difference Result 1319 states and 1864 transitions. [2018-09-30 10:44:26,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 10:44:26,592 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2018-09-30 10:44:26,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:26,595 INFO L225 Difference]: With dead ends: 1319 [2018-09-30 10:44:26,595 INFO L226 Difference]: Without dead ends: 823 [2018-09-30 10:44:26,596 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2018-09-30 10:44:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 566. [2018-09-30 10:44:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2018-09-30 10:44:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 809 transitions. [2018-09-30 10:44:26,819 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 809 transitions. Word has length 18 [2018-09-30 10:44:26,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:26,819 INFO L480 AbstractCegarLoop]: Abstraction has 566 states and 809 transitions. [2018-09-30 10:44:26,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:44:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 809 transitions. [2018-09-30 10:44:26,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:44:26,821 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:26,821 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:26,821 INFO L423 AbstractCegarLoop]: === Iteration 24 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:26,821 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:26,821 INFO L82 PathProgramCache]: Analyzing trace with hash 801556786, now seen corresponding path program 1 times [2018-09-30 10:44:26,822 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:26,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:26,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:26,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:26,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:27,109 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:27,110 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:27,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:27,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:27,356 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:27,356 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 12 [2018-09-30 10:44:27,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:44:27,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:44:27,357 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:27,357 INFO L87 Difference]: Start difference. First operand 566 states and 809 transitions. Second operand 13 states. [2018-09-30 10:44:29,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:29,607 INFO L93 Difference]: Finished difference Result 766 states and 1086 transitions. [2018-09-30 10:44:29,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 10:44:29,607 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2018-09-30 10:44:29,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:29,610 INFO L225 Difference]: With dead ends: 766 [2018-09-30 10:44:29,610 INFO L226 Difference]: Without dead ends: 764 [2018-09-30 10:44:29,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:29,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2018-09-30 10:44:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 608. [2018-09-30 10:44:29,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2018-09-30 10:44:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 869 transitions. [2018-09-30 10:44:29,803 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 869 transitions. Word has length 18 [2018-09-30 10:44:29,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:29,804 INFO L480 AbstractCegarLoop]: Abstraction has 608 states and 869 transitions. [2018-09-30 10:44:29,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:44:29,804 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 869 transitions. [2018-09-30 10:44:29,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:44:29,805 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:29,805 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:29,805 INFO L423 AbstractCegarLoop]: === Iteration 25 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:29,805 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:29,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1593301430, now seen corresponding path program 1 times [2018-09-30 10:44:29,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:29,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:29,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:29,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:29,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:29,929 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:29,929 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:29,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:29,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:30,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:30,534 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-30 10:44:30,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2018-09-30 10:44:30,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:44:30,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:44:30,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:30,535 INFO L87 Difference]: Start difference. First operand 608 states and 869 transitions. Second operand 13 states. [2018-09-30 10:44:38,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:38,368 INFO L93 Difference]: Finished difference Result 2095 states and 2968 transitions. [2018-09-30 10:44:38,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-30 10:44:38,369 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2018-09-30 10:44:38,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:38,373 INFO L225 Difference]: With dead ends: 2095 [2018-09-30 10:44:38,373 INFO L226 Difference]: Without dead ends: 1329 [2018-09-30 10:44:38,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:38,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2018-09-30 10:44:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 992. [2018-09-30 10:44:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2018-09-30 10:44:38,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1402 transitions. [2018-09-30 10:44:38,694 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1402 transitions. Word has length 18 [2018-09-30 10:44:38,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:38,694 INFO L480 AbstractCegarLoop]: Abstraction has 992 states and 1402 transitions. [2018-09-30 10:44:38,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:44:38,694 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1402 transitions. [2018-09-30 10:44:38,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:44:38,695 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:38,695 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:38,695 INFO L423 AbstractCegarLoop]: === Iteration 26 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:38,696 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:38,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1366841759, now seen corresponding path program 1 times [2018-09-30 10:44:38,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:38,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:38,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:38,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:38,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:38,954 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:38,954 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:38,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:39,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:39,098 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:39,098 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2018-09-30 10:44:39,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 10:44:39,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 10:44:39,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:39,099 INFO L87 Difference]: Start difference. First operand 992 states and 1402 transitions. Second operand 11 states. [2018-09-30 10:44:42,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:42,439 INFO L93 Difference]: Finished difference Result 1291 states and 1819 transitions. [2018-09-30 10:44:42,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:44:42,440 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2018-09-30 10:44:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:42,445 INFO L225 Difference]: With dead ends: 1291 [2018-09-30 10:44:42,446 INFO L226 Difference]: Without dead ends: 1289 [2018-09-30 10:44:42,446 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:42,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2018-09-30 10:44:42,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1028. [2018-09-30 10:44:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2018-09-30 10:44:42,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1454 transitions. [2018-09-30 10:44:42,793 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1454 transitions. Word has length 18 [2018-09-30 10:44:42,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:42,794 INFO L480 AbstractCegarLoop]: Abstraction has 1028 states and 1454 transitions. [2018-09-30 10:44:42,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 10:44:42,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1454 transitions. [2018-09-30 10:44:42,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:44:42,795 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:42,795 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:42,795 INFO L423 AbstractCegarLoop]: === Iteration 27 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:42,795 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:42,795 INFO L82 PathProgramCache]: Analyzing trace with hash -817918193, now seen corresponding path program 1 times [2018-09-30 10:44:42,795 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:42,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:42,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:42,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:42,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:42,967 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:42,968 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:42,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:43,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:43,153 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-30 10:44:43,154 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2018-09-30 10:44:43,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:44:43,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:44:43,154 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:43,154 INFO L87 Difference]: Start difference. First operand 1028 states and 1454 transitions. Second operand 13 states. [2018-09-30 10:44:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:47,339 INFO L93 Difference]: Finished difference Result 2222 states and 3144 transitions. [2018-09-30 10:44:47,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 10:44:47,340 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2018-09-30 10:44:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:47,344 INFO L225 Difference]: With dead ends: 2222 [2018-09-30 10:44:47,344 INFO L226 Difference]: Without dead ends: 1132 [2018-09-30 10:44:47,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2018-09-30 10:44:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 831. [2018-09-30 10:44:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2018-09-30 10:44:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1173 transitions. [2018-09-30 10:44:47,675 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1173 transitions. Word has length 18 [2018-09-30 10:44:47,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:47,675 INFO L480 AbstractCegarLoop]: Abstraction has 831 states and 1173 transitions. [2018-09-30 10:44:47,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:44:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1173 transitions. [2018-09-30 10:44:47,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:44:47,676 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:47,677 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:47,677 INFO L423 AbstractCegarLoop]: === Iteration 28 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:47,677 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:47,677 INFO L82 PathProgramCache]: Analyzing trace with hash -228224959, now seen corresponding path program 1 times [2018-09-30 10:44:47,677 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:47,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:47,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:47,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:47,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:47,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:47,811 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:47,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:47,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:47,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:47,969 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:47,969 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-09-30 10:44:47,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:44:47,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:44:47,970 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:47,970 INFO L87 Difference]: Start difference. First operand 831 states and 1173 transitions. Second operand 13 states. [2018-09-30 10:44:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:53,621 INFO L93 Difference]: Finished difference Result 1989 states and 2785 transitions. [2018-09-30 10:44:53,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 10:44:53,621 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2018-09-30 10:44:53,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:53,625 INFO L225 Difference]: With dead ends: 1989 [2018-09-30 10:44:53,626 INFO L226 Difference]: Without dead ends: 1130 [2018-09-30 10:44:53,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2018-09-30 10:44:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 806. [2018-09-30 10:44:53,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2018-09-30 10:44:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1135 transitions. [2018-09-30 10:44:53,902 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1135 transitions. Word has length 18 [2018-09-30 10:44:53,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:53,902 INFO L480 AbstractCegarLoop]: Abstraction has 806 states and 1135 transitions. [2018-09-30 10:44:53,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:44:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1135 transitions. [2018-09-30 10:44:53,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 10:44:53,904 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:53,904 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:53,904 INFO L423 AbstractCegarLoop]: === Iteration 29 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:53,904 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:53,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1122647006, now seen corresponding path program 1 times [2018-09-30 10:44:53,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:53,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:53,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:53,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:53,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:54,278 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:54,278 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:54,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:54,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:54,422 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:54,422 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-09-30 10:44:54,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 10:44:54,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 10:44:54,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:54,423 INFO L87 Difference]: Start difference. First operand 806 states and 1135 transitions. Second operand 11 states. [2018-09-30 10:44:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:44:57,595 INFO L93 Difference]: Finished difference Result 1022 states and 1428 transitions. [2018-09-30 10:44:57,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 10:44:57,595 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-09-30 10:44:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:44:57,601 INFO L225 Difference]: With dead ends: 1022 [2018-09-30 10:44:57,601 INFO L226 Difference]: Without dead ends: 1020 [2018-09-30 10:44:57,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:44:57,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2018-09-30 10:44:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 838. [2018-09-30 10:44:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2018-09-30 10:44:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1182 transitions. [2018-09-30 10:44:57,912 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1182 transitions. Word has length 22 [2018-09-30 10:44:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:44:57,912 INFO L480 AbstractCegarLoop]: Abstraction has 838 states and 1182 transitions. [2018-09-30 10:44:57,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 10:44:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1182 transitions. [2018-09-30 10:44:57,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 10:44:57,913 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:44:57,913 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:44:57,914 INFO L423 AbstractCegarLoop]: === Iteration 30 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:44:57,914 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:44:57,914 INFO L82 PathProgramCache]: Analyzing trace with hash 15880131, now seen corresponding path program 1 times [2018-09-30 10:44:57,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:44:57,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:44:57,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:57,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:57,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:44:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:58,024 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:44:58,024 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:44:58,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:44:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:44:58,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:44:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:44:58,194 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:44:58,194 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-09-30 10:44:58,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 10:44:58,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 10:44:58,194 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:44:58,195 INFO L87 Difference]: Start difference. First operand 838 states and 1182 transitions. Second operand 10 states. [2018-09-30 10:45:02,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:02,203 INFO L93 Difference]: Finished difference Result 1127 states and 1575 transitions. [2018-09-30 10:45:02,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:45:02,203 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-09-30 10:45:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:02,207 INFO L225 Difference]: With dead ends: 1127 [2018-09-30 10:45:02,207 INFO L226 Difference]: Without dead ends: 1125 [2018-09-30 10:45:02,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:02,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2018-09-30 10:45:02,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 852. [2018-09-30 10:45:02,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2018-09-30 10:45:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1203 transitions. [2018-09-30 10:45:02,511 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1203 transitions. Word has length 22 [2018-09-30 10:45:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:02,511 INFO L480 AbstractCegarLoop]: Abstraction has 852 states and 1203 transitions. [2018-09-30 10:45:02,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 10:45:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1203 transitions. [2018-09-30 10:45:02,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 10:45:02,513 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:02,513 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:45:02,513 INFO L423 AbstractCegarLoop]: === Iteration 31 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:02,513 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:02,513 INFO L82 PathProgramCache]: Analyzing trace with hash -510719313, now seen corresponding path program 1 times [2018-09-30 10:45:02,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:02,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:02,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:02,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:02,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:02,815 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:02,815 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:02,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:02,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:03,915 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:03,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-09-30 10:45:03,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 10:45:03,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 10:45:03,915 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:03,915 INFO L87 Difference]: Start difference. First operand 852 states and 1203 transitions. Second operand 14 states. [2018-09-30 10:45:08,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:08,593 INFO L93 Difference]: Finished difference Result 1127 states and 1578 transitions. [2018-09-30 10:45:08,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 10:45:08,593 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2018-09-30 10:45:08,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:08,597 INFO L225 Difference]: With dead ends: 1127 [2018-09-30 10:45:08,597 INFO L226 Difference]: Without dead ends: 1125 [2018-09-30 10:45:08,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:08,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2018-09-30 10:45:08,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 830. [2018-09-30 10:45:08,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 830 states. [2018-09-30 10:45:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1171 transitions. [2018-09-30 10:45:08,882 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1171 transitions. Word has length 22 [2018-09-30 10:45:08,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:08,882 INFO L480 AbstractCegarLoop]: Abstraction has 830 states and 1171 transitions. [2018-09-30 10:45:08,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 10:45:08,883 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1171 transitions. [2018-09-30 10:45:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 10:45:08,884 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:08,884 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:45:08,884 INFO L423 AbstractCegarLoop]: === Iteration 32 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:08,885 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:08,885 INFO L82 PathProgramCache]: Analyzing trace with hash 627807824, now seen corresponding path program 1 times [2018-09-30 10:45:08,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:08,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:08,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:08,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:08,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:09,918 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:09,918 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:09,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:09,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:10,137 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:10,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2018-09-30 10:45:10,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:45:10,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:45:10,138 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:10,138 INFO L87 Difference]: Start difference. First operand 830 states and 1171 transitions. Second operand 15 states. [2018-09-30 10:45:15,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:15,007 INFO L93 Difference]: Finished difference Result 1072 states and 1499 transitions. [2018-09-30 10:45:15,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 10:45:15,007 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2018-09-30 10:45:15,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:15,011 INFO L225 Difference]: With dead ends: 1072 [2018-09-30 10:45:15,011 INFO L226 Difference]: Without dead ends: 1070 [2018-09-30 10:45:15,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:15,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-09-30 10:45:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 788. [2018-09-30 10:45:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2018-09-30 10:45:15,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1104 transitions. [2018-09-30 10:45:15,315 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1104 transitions. Word has length 22 [2018-09-30 10:45:15,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:15,316 INFO L480 AbstractCegarLoop]: Abstraction has 788 states and 1104 transitions. [2018-09-30 10:45:15,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:45:15,316 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1104 transitions. [2018-09-30 10:45:15,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 10:45:15,317 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:15,317 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:45:15,318 INFO L423 AbstractCegarLoop]: === Iteration 33 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:15,318 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:15,318 INFO L82 PathProgramCache]: Analyzing trace with hash 345073063, now seen corresponding path program 1 times [2018-09-30 10:45:15,318 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:15,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:15,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:15,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:15,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:15,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:15,561 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:15,561 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:15,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:15,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:15,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:15,693 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:15,693 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-09-30 10:45:15,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 10:45:15,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 10:45:15,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:15,694 INFO L87 Difference]: Start difference. First operand 788 states and 1104 transitions. Second operand 10 states. [2018-09-30 10:45:19,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:19,301 INFO L93 Difference]: Finished difference Result 1025 states and 1426 transitions. [2018-09-30 10:45:19,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:45:19,302 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-09-30 10:45:19,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:19,305 INFO L225 Difference]: With dead ends: 1025 [2018-09-30 10:45:19,305 INFO L226 Difference]: Without dead ends: 1023 [2018-09-30 10:45:19,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:19,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2018-09-30 10:45:19,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 818. [2018-09-30 10:45:19,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2018-09-30 10:45:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1149 transitions. [2018-09-30 10:45:19,592 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1149 transitions. Word has length 22 [2018-09-30 10:45:19,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:19,592 INFO L480 AbstractCegarLoop]: Abstraction has 818 states and 1149 transitions. [2018-09-30 10:45:19,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 10:45:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1149 transitions. [2018-09-30 10:45:19,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 10:45:19,593 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:19,593 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:45:19,594 INFO L423 AbstractCegarLoop]: === Iteration 34 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:19,594 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:19,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1613894486, now seen corresponding path program 1 times [2018-09-30 10:45:19,594 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:19,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:19,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:19,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:19,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:19,766 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:19,766 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:19,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:19,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:19,932 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:19,933 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2018-09-30 10:45:19,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:45:19,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:45:19,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:19,933 INFO L87 Difference]: Start difference. First operand 818 states and 1149 transitions. Second operand 15 states. [2018-09-30 10:45:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:24,841 INFO L93 Difference]: Finished difference Result 1057 states and 1481 transitions. [2018-09-30 10:45:24,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 10:45:24,841 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2018-09-30 10:45:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:24,845 INFO L225 Difference]: With dead ends: 1057 [2018-09-30 10:45:24,845 INFO L226 Difference]: Without dead ends: 1055 [2018-09-30 10:45:24,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:24,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2018-09-30 10:45:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 770. [2018-09-30 10:45:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2018-09-30 10:45:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1073 transitions. [2018-09-30 10:45:25,160 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1073 transitions. Word has length 22 [2018-09-30 10:45:25,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:25,160 INFO L480 AbstractCegarLoop]: Abstraction has 770 states and 1073 transitions. [2018-09-30 10:45:25,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:45:25,161 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1073 transitions. [2018-09-30 10:45:25,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-30 10:45:25,162 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:25,162 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:45:25,162 INFO L423 AbstractCegarLoop]: === Iteration 35 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:25,162 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:25,162 INFO L82 PathProgramCache]: Analyzing trace with hash -488650854, now seen corresponding path program 1 times [2018-09-30 10:45:25,162 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:25,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:25,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:25,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:25,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:25,281 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:25,281 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:25,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:25,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 10:45:25,454 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:25,455 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2018-09-30 10:45:25,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:45:25,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:45:25,455 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:25,455 INFO L87 Difference]: Start difference. First operand 770 states and 1073 transitions. Second operand 15 states. [2018-09-30 10:45:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:31,964 INFO L93 Difference]: Finished difference Result 1779 states and 2438 transitions. [2018-09-30 10:45:31,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 10:45:31,964 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2018-09-30 10:45:31,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:31,969 INFO L225 Difference]: With dead ends: 1779 [2018-09-30 10:45:31,969 INFO L226 Difference]: Without dead ends: 1507 [2018-09-30 10:45:31,970 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:31,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2018-09-30 10:45:32,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1174. [2018-09-30 10:45:32,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2018-09-30 10:45:32,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1623 transitions. [2018-09-30 10:45:32,391 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1623 transitions. Word has length 25 [2018-09-30 10:45:32,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:32,391 INFO L480 AbstractCegarLoop]: Abstraction has 1174 states and 1623 transitions. [2018-09-30 10:45:32,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:45:32,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1623 transitions. [2018-09-30 10:45:32,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-30 10:45:32,392 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:32,392 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:45:32,392 INFO L423 AbstractCegarLoop]: === Iteration 36 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:32,392 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:32,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1608047085, now seen corresponding path program 1 times [2018-09-30 10:45:32,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:32,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:32,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:32,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:32,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:32,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:32,780 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:32,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:32,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 10:45:32,951 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:32,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2018-09-30 10:45:32,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:45:32,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:45:32,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:32,952 INFO L87 Difference]: Start difference. First operand 1174 states and 1623 transitions. Second operand 15 states. [2018-09-30 10:45:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:39,589 INFO L93 Difference]: Finished difference Result 2685 states and 3700 transitions. [2018-09-30 10:45:39,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 10:45:39,589 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2018-09-30 10:45:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:39,597 INFO L225 Difference]: With dead ends: 2685 [2018-09-30 10:45:39,597 INFO L226 Difference]: Without dead ends: 1652 [2018-09-30 10:45:39,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2018-09-30 10:45:40,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1212. [2018-09-30 10:45:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1212 states. [2018-09-30 10:45:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1681 transitions. [2018-09-30 10:45:40,078 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1681 transitions. Word has length 25 [2018-09-30 10:45:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:40,078 INFO L480 AbstractCegarLoop]: Abstraction has 1212 states and 1681 transitions. [2018-09-30 10:45:40,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:45:40,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1681 transitions. [2018-09-30 10:45:40,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-30 10:45:40,080 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:40,080 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:45:40,080 INFO L423 AbstractCegarLoop]: === Iteration 37 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:40,080 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:40,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1101622072, now seen corresponding path program 1 times [2018-09-30 10:45:40,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:40,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:40,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:40,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:40,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:40,224 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:40,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:40,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:40,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 10:45:40,398 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:40,399 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2018-09-30 10:45:40,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:45:40,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:45:40,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:40,399 INFO L87 Difference]: Start difference. First operand 1212 states and 1681 transitions. Second operand 15 states. [2018-09-30 10:45:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:47,492 INFO L93 Difference]: Finished difference Result 2130 states and 2907 transitions. [2018-09-30 10:45:47,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 10:45:47,493 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2018-09-30 10:45:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:47,501 INFO L225 Difference]: With dead ends: 2130 [2018-09-30 10:45:47,501 INFO L226 Difference]: Without dead ends: 1946 [2018-09-30 10:45:47,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1946 states. [2018-09-30 10:45:48,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1946 to 1616. [2018-09-30 10:45:48,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1616 states. [2018-09-30 10:45:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2248 transitions. [2018-09-30 10:45:48,193 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2248 transitions. Word has length 25 [2018-09-30 10:45:48,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:48,194 INFO L480 AbstractCegarLoop]: Abstraction has 1616 states and 2248 transitions. [2018-09-30 10:45:48,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:45:48,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2248 transitions. [2018-09-30 10:45:48,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-30 10:45:48,195 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:48,196 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:45:48,196 INFO L423 AbstractCegarLoop]: === Iteration 38 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:48,196 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:48,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1649781575, now seen corresponding path program 1 times [2018-09-30 10:45:48,196 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:48,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:48,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:48,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:48,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:48,452 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:48,452 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:48,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:48,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 10:45:48,607 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:48,607 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2018-09-30 10:45:48,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:45:48,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:45:48,608 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:48,608 INFO L87 Difference]: Start difference. First operand 1616 states and 2248 transitions. Second operand 15 states. [2018-09-30 10:45:55,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:45:55,475 INFO L93 Difference]: Finished difference Result 3372 states and 4705 transitions. [2018-09-30 10:45:55,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 10:45:55,476 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2018-09-30 10:45:55,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:45:55,485 INFO L225 Difference]: With dead ends: 3372 [2018-09-30 10:45:55,485 INFO L226 Difference]: Without dead ends: 2040 [2018-09-30 10:45:55,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:45:55,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2018-09-30 10:45:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1575. [2018-09-30 10:45:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1575 states. [2018-09-30 10:45:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2199 transitions. [2018-09-30 10:45:56,099 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2199 transitions. Word has length 25 [2018-09-30 10:45:56,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:45:56,099 INFO L480 AbstractCegarLoop]: Abstraction has 1575 states and 2199 transitions. [2018-09-30 10:45:56,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:45:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2199 transitions. [2018-09-30 10:45:56,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-30 10:45:56,101 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:45:56,101 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:45:56,101 INFO L423 AbstractCegarLoop]: === Iteration 39 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:45:56,101 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:45:56,101 INFO L82 PathProgramCache]: Analyzing trace with hash -664447164, now seen corresponding path program 2 times [2018-09-30 10:45:56,101 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:45:56,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:45:56,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:56,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:45:56,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:45:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:45:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:56,309 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:45:56,309 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:45:56,317 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:45:56,366 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:45:56,367 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:45:56,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:45:56,613 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:45:56,634 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:45:56,634 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-09-30 10:45:56,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 10:45:56,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 10:45:56,635 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:45:56,635 INFO L87 Difference]: Start difference. First operand 1575 states and 2199 transitions. Second operand 20 states. [2018-09-30 10:46:20,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:20,810 INFO L93 Difference]: Finished difference Result 2646 states and 3763 transitions. [2018-09-30 10:46:20,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-30 10:46:20,811 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 29 [2018-09-30 10:46:20,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:20,818 INFO L225 Difference]: With dead ends: 2646 [2018-09-30 10:46:20,819 INFO L226 Difference]: Without dead ends: 2644 [2018-09-30 10:46:20,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2018-09-30 10:46:21,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 1833. [2018-09-30 10:46:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2018-09-30 10:46:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2576 transitions. [2018-09-30 10:46:21,497 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2576 transitions. Word has length 29 [2018-09-30 10:46:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:21,497 INFO L480 AbstractCegarLoop]: Abstraction has 1833 states and 2576 transitions. [2018-09-30 10:46:21,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 10:46:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2576 transitions. [2018-09-30 10:46:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-30 10:46:21,522 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:21,522 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:46:21,522 INFO L423 AbstractCegarLoop]: === Iteration 40 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:21,522 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:21,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1030242552, now seen corresponding path program 2 times [2018-09-30 10:46:21,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:21,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:21,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:21,523 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:21,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:22,309 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:22,309 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:22,316 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:46:22,366 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:46:22,367 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:22,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:46:22,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:22,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2018-09-30 10:46:22,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 10:46:22,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 10:46:22,721 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:22,721 INFO L87 Difference]: Start difference. First operand 1833 states and 2576 transitions. Second operand 22 states. [2018-09-30 10:46:46,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:46:46,219 INFO L93 Difference]: Finished difference Result 2887 states and 4117 transitions. [2018-09-30 10:46:46,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-30 10:46:46,219 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 29 [2018-09-30 10:46:46,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:46:46,227 INFO L225 Difference]: With dead ends: 2887 [2018-09-30 10:46:46,227 INFO L226 Difference]: Without dead ends: 2885 [2018-09-30 10:46:46,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:46:46,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2018-09-30 10:46:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2102. [2018-09-30 10:46:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2102 states. [2018-09-30 10:46:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2970 transitions. [2018-09-30 10:46:47,058 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 2970 transitions. Word has length 29 [2018-09-30 10:46:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:46:47,058 INFO L480 AbstractCegarLoop]: Abstraction has 2102 states and 2970 transitions. [2018-09-30 10:46:47,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 10:46:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 2970 transitions. [2018-09-30 10:46:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-30 10:46:47,061 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:46:47,061 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:46:47,062 INFO L423 AbstractCegarLoop]: === Iteration 41 === [l1l0Err0ASSERT_VIOLATIONASSERT, l0l1Err0ASSERT_VIOLATIONASSERT, l1l1Err0ASSERT_VIOLATIONASSERT, l1l1Err1ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:46:47,062 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:46:47,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1174012687, now seen corresponding path program 2 times [2018-09-30 10:46:47,062 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:46:47,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:46:47,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:47,063 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:46:47,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:46:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:46:47,441 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-30 10:46:47,442 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:46:47,442 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:46:47,450 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:46:47,510 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:46:47,510 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:46:47,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:46:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 10:46:47,976 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:46:47,977 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2018-09-30 10:46:47,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:46:47,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:46:47,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:46:47,977 INFO L87 Difference]: Start difference. First operand 2102 states and 2970 transitions. Second operand 16 states. [2018-09-30 10:47:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:02,443 INFO L93 Difference]: Finished difference Result 6948 states and 9725 transitions. [2018-09-30 10:47:02,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-30 10:47:02,443 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2018-09-30 10:47:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:02,453 INFO L225 Difference]: With dead ends: 6948 [2018-09-30 10:47:02,454 INFO L226 Difference]: Without dead ends: 4896 [2018-09-30 10:47:02,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4896 states. Received shutdown request... [2018-09-30 10:47:04,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4896 to 3634. [2018-09-30 10:47:04,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3634 states. [2018-09-30 10:47:04,086 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 10:47:04,092 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 10:47:04,093 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithProcedures.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 10:47:04 BoogieIcfgContainer [2018-09-30 10:47:04,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 10:47:04,094 INFO L168 Benchmark]: Toolchain (without parser) took 250300.18 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 125.8 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 155.6 MB). Peak memory consumption was 700.7 MB. Max. memory is 7.1 GB. [2018-09-30 10:47:04,096 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:47:04,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.52 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:47:04,097 INFO L168 Benchmark]: Boogie Preprocessor took 37.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:47:04,097 INFO L168 Benchmark]: RCFGBuilder took 701.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 10:47:04,098 INFO L168 Benchmark]: TraceAbstraction took 249506.06 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 125.8 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 134.5 MB). Peak memory consumption was 679.6 MB. Max. memory is 7.1 GB. [2018-09-30 10:47:04,102 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 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.52 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 701.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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 249506.06 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 125.8 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 134.5 MB). Peak memory consumption was 679.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 66). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 99). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 112). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 121). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 4 error locations. TIMEOUT Result, 249.4s OverallTime, 41 OverallIterations, 3 TraceHistogramMax, 219.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2756 SDtfs, 6732 SDslu, 5263 SDs, 0 SdLazy, 30784 SolverSat, 8412 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2390 GetRequests, 666 SyntacticMatches, 5 SemanticMatches, 1719 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2102occurred in iteration=40, 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: 10.1s AutomataMinimizationTime, 41 MinimizatonAttempts, 8172 StatesRemovedByMinimization, 40 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 16.7s InterpolantComputationTime, 1448 NumberOfCodeBlocks, 1448 NumberOfCodeBlocksAsserted, 82 NumberOfCheckSat, 1369 ConstructedInterpolants, 28 QuantifiedInterpolants, 115783 SizeOfPredicates, 549 NumberOfNonLiveVariables, 9833 ConjunctsInSsa, 1018 ConjunctsInUnsatCore, 79 InterpolantComputations, 9 PerfectInterpolantSequences, 100/380 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/threadpooling_product_WithProcedures.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_10-47-04-114.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product_WithProcedures.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_10-47-04-114.csv Completed graceful shutdown