java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/real-life/GateController.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 10:14:28,633 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:14:28,635 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:14:28,647 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 10:14:28,648 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 10:14:28,649 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 10:14:28,650 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 10:14:28,652 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 10:14:28,654 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 10:14:28,655 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 10:14:28,656 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 10:14:28,685 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-30 10:14:28,701 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:14:28,702 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:14:28,703 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:14:28,703 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:14:28,704 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:14:28,704 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:14:28,704 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:14:28,704 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:14:28,704 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:14:28,705 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:14:28,705 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:14:28,705 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:14:28,705 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:14:28,705 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:14:28,706 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:14:28,706 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:14:28,706 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:14:28,706 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:14:28,706 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:14:28,707 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:14:28,707 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:14:28,707 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:14:28,707 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:14:28,707 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:14:28,708 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:14:28,708 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:14:28,708 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:14:28,708 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:14:28,708 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:14:28,709 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:14:28,769 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:14:28,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:14:28,791 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:14:28,793 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:14:28,793 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:14:28,794 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl [2018-09-30 10:14:28,795 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/GateController.bpl' [2018-09-30 10:14:28,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:14:28,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:14:28,857 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:14:28,857 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:14:28,857 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:14:28,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:14:28" (1/1) ... [2018-09-30 10:14:28,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:14:28" (1/1) ... [2018-09-30 10:14:28,901 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 10:14:28,901 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 10:14:28,901 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 10:14:28,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:14:28,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:14:28,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:14:28,905 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:14:28,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:14:28" (1/1) ... [2018-09-30 10:14:28,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:14:28" (1/1) ... [2018-09-30 10:14:28,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:14:28" (1/1) ... [2018-09-30 10:14:28,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:14:28" (1/1) ... [2018-09-30 10:14:28,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:14:28" (1/1) ... [2018-09-30 10:14:28,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:14:28" (1/1) ... [2018-09-30 10:14:28,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:14:28" (1/1) ... [2018-09-30 10:14:28,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:14:28,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:14:28,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:14:28,939 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:14:28,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:14:28" (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 10:14:29,045 INFO L124 BoogieDeclarations]: Specification and implementation of procedure GateController given in one single declaration [2018-09-30 10:14:29,045 INFO L130 BoogieDeclarations]: Found specification of procedure GateController [2018-09-30 10:14:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure GateController [2018-09-30 10:14:29,330 INFO L345 CfgBuilder]: Using library mode [2018-09-30 10:14:29,331 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:14:29 BoogieIcfgContainer [2018-09-30 10:14:29,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:14:29,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:14:29,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:14:29,340 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:14:29,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:14:28" (1/2) ... [2018-09-30 10:14:29,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72455c33 and model type GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:14:29, skipping insertion in model container [2018-09-30 10:14:29,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:14:29" (2/2) ... [2018-09-30 10:14:29,344 INFO L112 eAbstractionObserver]: Analyzing ICFG GateController.bpl [2018-09-30 10:14:29,357 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:14:29,370 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 10:14:29,430 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:14:29,431 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:14:29,431 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:14:29,431 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:14:29,431 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:14:29,432 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:14:29,432 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:14:29,432 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:14:29,432 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:14:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-09-30 10:14:29,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-30 10:14:29,467 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:29,469 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-30 10:14:29,471 INFO L423 AbstractCegarLoop]: === Iteration 1 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:29,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:29,481 INFO L82 PathProgramCache]: Analyzing trace with hash 30432, now seen corresponding path program 1 times [2018-09-30 10:14:29,484 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:29,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:29,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:29,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:14:29,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:29,703 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 10:14:29,706 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:14:29,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:14:29,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:14:29,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:14:29,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 10:14:29,728 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-09-30 10:14:29,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:29,803 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2018-09-30 10:14:29,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:14:29,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-30 10:14:29,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:29,817 INFO L225 Difference]: With dead ends: 19 [2018-09-30 10:14:29,817 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 10:14:29,821 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 10:14:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 10:14:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-09-30 10:14:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 10:14:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-09-30 10:14:29,858 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 3 [2018-09-30 10:14:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:29,859 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-09-30 10:14:29,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:14:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2018-09-30 10:14:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 10:14:29,860 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:29,860 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:14:29,860 INFO L423 AbstractCegarLoop]: === Iteration 2 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:29,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:29,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1953617644, now seen corresponding path program 1 times [2018-09-30 10:14:29,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:29,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:29,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:29,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:14:29,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:30,049 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 10:14:30,049 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:30,050 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 10:14:30,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:14:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:30,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:30,500 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-30 10:14:30,622 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 10:14:30,644 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:30,645 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-09-30 10:14:30,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 10:14:30,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 10:14:30,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-09-30 10:14:30,646 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 8 states. [2018-09-30 10:14:30,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:30,818 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-30 10:14:30,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:14:30,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-09-30 10:14:30,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:30,821 INFO L225 Difference]: With dead ends: 21 [2018-09-30 10:14:30,821 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 10:14:30,824 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-09-30 10:14:30,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 10:14:30,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2018-09-30 10:14:30,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 10:14:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-09-30 10:14:30,833 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 8 [2018-09-30 10:14:30,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:30,833 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2018-09-30 10:14:30,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 10:14:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2018-09-30 10:14:30,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 10:14:30,836 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:30,836 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:14:30,838 INFO L423 AbstractCegarLoop]: === Iteration 3 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:30,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:30,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1953558062, now seen corresponding path program 1 times [2018-09-30 10:14:30,839 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:30,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:30,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:30,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:14:30,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:30,886 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:14:30,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:14:30,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:14:30,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:14:30,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 10:14:30,887 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 3 states. [2018-09-30 10:14:30,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:30,904 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2018-09-30 10:14:30,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:14:30,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-09-30 10:14:30,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:30,905 INFO L225 Difference]: With dead ends: 21 [2018-09-30 10:14:30,905 INFO L226 Difference]: Without dead ends: 14 [2018-09-30 10:14:30,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 10:14:30,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-30 10:14:30,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-30 10:14:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-30 10:14:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-09-30 10:14:30,911 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2018-09-30 10:14:30,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:30,912 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-09-30 10:14:30,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:14:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-09-30 10:14:30,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-30 10:14:30,913 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:30,913 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2018-09-30 10:14:30,913 INFO L423 AbstractCegarLoop]: === Iteration 4 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:30,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:30,914 INFO L82 PathProgramCache]: Analyzing trace with hash 72785504, now seen corresponding path program 2 times [2018-09-30 10:14:30,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:30,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:30,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:30,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:14:30,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:31,257 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:31,257 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 10:14:31,268 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:14:31,284 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:14:31,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:31,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:31,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:31,534 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:31,534 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-09-30 10:14:31,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 10:14:31,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 10:14:31,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-30 10:14:31,536 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 12 states. [2018-09-30 10:14:31,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:31,723 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2018-09-30 10:14:31,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 10:14:31,723 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 13 [2018-09-30 10:14:31,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:31,724 INFO L225 Difference]: With dead ends: 25 [2018-09-30 10:14:31,724 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 10:14:31,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-30 10:14:31,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 10:14:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-09-30 10:14:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 10:14:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2018-09-30 10:14:31,732 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2018-09-30 10:14:31,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:31,732 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2018-09-30 10:14:31,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 10:14:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2018-09-30 10:14:31,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:14:31,733 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:31,733 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1] [2018-09-30 10:14:31,734 INFO L423 AbstractCegarLoop]: === Iteration 5 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:31,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:31,734 INFO L82 PathProgramCache]: Analyzing trace with hash 491282284, now seen corresponding path program 3 times [2018-09-30 10:14:31,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:31,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:31,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:31,736 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:31,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:31,876 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:31,876 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -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 10:14:31,884 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:14:31,916 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-30 10:14:31,916 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:31,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:32,291 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:32,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-09-30 10:14:32,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:14:32,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:14:32,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-09-30 10:14:32,294 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 16 states. [2018-09-30 10:14:32,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:32,653 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2018-09-30 10:14:32,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 10:14:32,654 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-09-30 10:14:32,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:32,655 INFO L225 Difference]: With dead ends: 30 [2018-09-30 10:14:32,655 INFO L226 Difference]: Without dead ends: 28 [2018-09-30 10:14:32,656 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-09-30 10:14:32,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-30 10:14:32,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2018-09-30 10:14:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-30 10:14:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-09-30 10:14:32,661 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2018-09-30 10:14:32,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:32,661 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-09-30 10:14:32,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 10:14:32,662 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-09-30 10:14:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-30 10:14:32,662 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:32,663 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1] [2018-09-30 10:14:32,663 INFO L423 AbstractCegarLoop]: === Iteration 6 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:32,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:32,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1589732832, now seen corresponding path program 4 times [2018-09-30 10:14:32,664 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:32,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:32,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:32,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:32,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:32,921 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:32,921 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 10:14:32,929 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:14:32,939 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:14:32,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:32,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:33,307 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:33,307 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-09-30 10:14:33,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 10:14:33,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 10:14:33,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-30 10:14:33,309 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 20 states. [2018-09-30 10:14:33,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:33,640 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-09-30 10:14:33,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 10:14:33,641 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 23 [2018-09-30 10:14:33,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:33,642 INFO L225 Difference]: With dead ends: 35 [2018-09-30 10:14:33,642 INFO L226 Difference]: Without dead ends: 33 [2018-09-30 10:14:33,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-09-30 10:14:33,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-30 10:14:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2018-09-30 10:14:33,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-30 10:14:33,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2018-09-30 10:14:33,649 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2018-09-30 10:14:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:33,649 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2018-09-30 10:14:33,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 10:14:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2018-09-30 10:14:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-30 10:14:33,650 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:33,651 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1] [2018-09-30 10:14:33,651 INFO L423 AbstractCegarLoop]: === Iteration 7 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:33,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:33,652 INFO L82 PathProgramCache]: Analyzing trace with hash 602818540, now seen corresponding path program 5 times [2018-09-30 10:14:33,652 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:33,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:33,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:33,653 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:33,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:34,021 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:34,021 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 10:14:34,029 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:14:34,045 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-30 10:14:34,045 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:34,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:34,468 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-30 10:14:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:34,745 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:34,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2018-09-30 10:14:34,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 10:14:34,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 10:14:34,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2018-09-30 10:14:34,747 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 24 states. [2018-09-30 10:14:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:34,884 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2018-09-30 10:14:34,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 10:14:34,885 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2018-09-30 10:14:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:34,886 INFO L225 Difference]: With dead ends: 40 [2018-09-30 10:14:34,887 INFO L226 Difference]: Without dead ends: 38 [2018-09-30 10:14:34,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2018-09-30 10:14:34,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-30 10:14:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-09-30 10:14:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-30 10:14:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2018-09-30 10:14:34,894 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 28 [2018-09-30 10:14:34,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:34,894 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2018-09-30 10:14:34,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 10:14:34,894 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2018-09-30 10:14:34,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-30 10:14:34,895 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:34,895 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1] [2018-09-30 10:14:34,896 INFO L423 AbstractCegarLoop]: === Iteration 8 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:34,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:34,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1979239776, now seen corresponding path program 6 times [2018-09-30 10:14:34,896 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:34,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:34,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:34,897 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:34,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:35,136 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:35,137 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 10:14:35,145 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:14:35,161 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 10:14:35,161 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:35,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:35,757 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:35,757 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-09-30 10:14:35,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 10:14:35,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 10:14:35,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2018-09-30 10:14:35,759 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 28 states. [2018-09-30 10:14:35,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:35,950 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2018-09-30 10:14:35,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 10:14:35,952 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 33 [2018-09-30 10:14:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:35,953 INFO L225 Difference]: With dead ends: 45 [2018-09-30 10:14:35,953 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 10:14:35,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2018-09-30 10:14:35,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 10:14:35,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-09-30 10:14:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 10:14:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-09-30 10:14:35,962 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 33 [2018-09-30 10:14:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:35,962 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-09-30 10:14:35,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 10:14:35,962 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-09-30 10:14:35,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 10:14:35,963 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:35,964 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1] [2018-09-30 10:14:35,964 INFO L423 AbstractCegarLoop]: === Iteration 9 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:35,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:35,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1800695700, now seen corresponding path program 7 times [2018-09-30 10:14:35,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:35,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:35,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:35,966 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:35,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:36,328 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:36,328 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:14:36,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:14:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:36,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:36,935 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:36,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-09-30 10:14:36,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 10:14:36,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 10:14:36,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=699, Unknown=0, NotChecked=0, Total=992 [2018-09-30 10:14:36,937 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 32 states. [2018-09-30 10:14:37,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:37,099 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-09-30 10:14:37,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 10:14:37,099 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2018-09-30 10:14:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:37,101 INFO L225 Difference]: With dead ends: 50 [2018-09-30 10:14:37,101 INFO L226 Difference]: Without dead ends: 48 [2018-09-30 10:14:37,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=293, Invalid=699, Unknown=0, NotChecked=0, Total=992 [2018-09-30 10:14:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-30 10:14:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-09-30 10:14:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-30 10:14:37,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2018-09-30 10:14:37,108 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2018-09-30 10:14:37,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:37,108 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2018-09-30 10:14:37,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 10:14:37,109 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2018-09-30 10:14:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-30 10:14:37,110 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:37,110 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1] [2018-09-30 10:14:37,110 INFO L423 AbstractCegarLoop]: === Iteration 10 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:37,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:37,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1430989600, now seen corresponding path program 8 times [2018-09-30 10:14:37,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:37,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:37,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:37,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:14:37,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:37,381 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:37,381 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 10:14:37,392 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:14:37,415 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:14:37,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:37,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:38,162 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:38,163 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2018-09-30 10:14:38,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 10:14:38,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 10:14:38,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2018-09-30 10:14:38,165 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 36 states. [2018-09-30 10:14:38,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:38,430 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2018-09-30 10:14:38,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 10:14:38,430 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 43 [2018-09-30 10:14:38,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:38,432 INFO L225 Difference]: With dead ends: 55 [2018-09-30 10:14:38,432 INFO L226 Difference]: Without dead ends: 53 [2018-09-30 10:14:38,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2018-09-30 10:14:38,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-30 10:14:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2018-09-30 10:14:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-30 10:14:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2018-09-30 10:14:38,440 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 43 [2018-09-30 10:14:38,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:38,441 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2018-09-30 10:14:38,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 10:14:38,441 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2018-09-30 10:14:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-30 10:14:38,442 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:38,443 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1] [2018-09-30 10:14:38,443 INFO L423 AbstractCegarLoop]: === Iteration 11 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:38,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:38,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1043842836, now seen corresponding path program 9 times [2018-09-30 10:14:38,443 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:38,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:38,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:38,445 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:38,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:38,730 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:38,730 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:38,730 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:14:38,742 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:14:38,764 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-30 10:14:38,764 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:38,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:40,091 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-30 10:14:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:40,460 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:40,460 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-09-30 10:14:40,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 10:14:40,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 10:14:40,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=1113, Unknown=0, NotChecked=0, Total=1560 [2018-09-30 10:14:40,462 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 40 states. [2018-09-30 10:14:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:40,757 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2018-09-30 10:14:40,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 10:14:40,758 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 48 [2018-09-30 10:14:40,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:40,759 INFO L225 Difference]: With dead ends: 60 [2018-09-30 10:14:40,759 INFO L226 Difference]: Without dead ends: 58 [2018-09-30 10:14:40,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=447, Invalid=1113, Unknown=0, NotChecked=0, Total=1560 [2018-09-30 10:14:40,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-30 10:14:40,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2018-09-30 10:14:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-30 10:14:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-09-30 10:14:40,767 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 48 [2018-09-30 10:14:40,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:40,768 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-09-30 10:14:40,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 10:14:40,768 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-09-30 10:14:40,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-30 10:14:40,769 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:40,769 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1] [2018-09-30 10:14:40,769 INFO L423 AbstractCegarLoop]: === Iteration 12 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:40,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:40,770 INFO L82 PathProgramCache]: Analyzing trace with hash -676496288, now seen corresponding path program 10 times [2018-09-30 10:14:40,770 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:40,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:40,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:40,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:40,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:41,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:41,125 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 10:14:41,137 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:14:41,177 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:14:41,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:41,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:42,062 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:42,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 43 [2018-09-30 10:14:42,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 10:14:42,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 10:14:42,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=1356, Unknown=0, NotChecked=0, Total=1892 [2018-09-30 10:14:42,067 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 44 states. [2018-09-30 10:14:42,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:42,387 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2018-09-30 10:14:42,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:14:42,387 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 53 [2018-09-30 10:14:42,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:42,389 INFO L225 Difference]: With dead ends: 65 [2018-09-30 10:14:42,389 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 10:14:42,390 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=536, Invalid=1356, Unknown=0, NotChecked=0, Total=1892 [2018-09-30 10:14:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 10:14:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-09-30 10:14:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 10:14:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2018-09-30 10:14:42,400 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 53 [2018-09-30 10:14:42,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:42,400 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2018-09-30 10:14:42,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 10:14:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2018-09-30 10:14:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 10:14:42,401 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:42,401 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 1, 1, 1] [2018-09-30 10:14:42,402 INFO L423 AbstractCegarLoop]: === Iteration 13 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:42,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:42,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1014218388, now seen corresponding path program 11 times [2018-09-30 10:14:42,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:42,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:42,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:42,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:42,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:42,878 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:42,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:14:42,888 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:14:42,931 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-30 10:14:42,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:42,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:43,855 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:43,855 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2018-09-30 10:14:43,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 10:14:43,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 10:14:43,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=633, Invalid=1623, Unknown=0, NotChecked=0, Total=2256 [2018-09-30 10:14:43,857 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 48 states. [2018-09-30 10:14:44,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:44,092 INFO L93 Difference]: Finished difference Result 70 states and 83 transitions. [2018-09-30 10:14:44,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 10:14:44,093 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 58 [2018-09-30 10:14:44,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:44,094 INFO L225 Difference]: With dead ends: 70 [2018-09-30 10:14:44,094 INFO L226 Difference]: Without dead ends: 68 [2018-09-30 10:14:44,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=633, Invalid=1623, Unknown=0, NotChecked=0, Total=2256 [2018-09-30 10:14:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-30 10:14:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-30 10:14:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-30 10:14:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2018-09-30 10:14:44,102 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 58 [2018-09-30 10:14:44,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:44,102 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2018-09-30 10:14:44,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 10:14:44,102 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2018-09-30 10:14:44,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-30 10:14:44,103 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:44,104 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 1, 1, 1] [2018-09-30 10:14:44,104 INFO L423 AbstractCegarLoop]: === Iteration 14 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:44,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:44,104 INFO L82 PathProgramCache]: Analyzing trace with hash -778386464, now seen corresponding path program 12 times [2018-09-30 10:14:44,104 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:44,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:44,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:44,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:44,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:44,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:44,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:14:44,666 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:14:44,725 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 10:14:44,725 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:44,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:45,721 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:45,722 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 51 [2018-09-30 10:14:45,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 10:14:45,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 10:14:45,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=738, Invalid=1914, Unknown=0, NotChecked=0, Total=2652 [2018-09-30 10:14:45,723 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand 52 states. [2018-09-30 10:14:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:45,941 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2018-09-30 10:14:45,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 10:14:45,941 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 63 [2018-09-30 10:14:45,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:45,942 INFO L225 Difference]: With dead ends: 75 [2018-09-30 10:14:45,943 INFO L226 Difference]: Without dead ends: 73 [2018-09-30 10:14:45,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=738, Invalid=1914, Unknown=0, NotChecked=0, Total=2652 [2018-09-30 10:14:45,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-30 10:14:45,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2018-09-30 10:14:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-30 10:14:45,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2018-09-30 10:14:45,950 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 63 [2018-09-30 10:14:45,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:45,950 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2018-09-30 10:14:45,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 10:14:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2018-09-30 10:14:45,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-30 10:14:45,951 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:45,952 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 1, 1, 1] [2018-09-30 10:14:45,952 INFO L423 AbstractCegarLoop]: === Iteration 15 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:45,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:45,952 INFO L82 PathProgramCache]: Analyzing trace with hash -130045460, now seen corresponding path program 13 times [2018-09-30 10:14:45,952 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:45,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:45,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:45,953 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:45,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:47,337 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:47,337 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:47,337 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 10:14:47,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:14:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:47,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:48,515 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:48,515 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 55 [2018-09-30 10:14:48,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 10:14:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 10:14:48,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=851, Invalid=2229, Unknown=0, NotChecked=0, Total=3080 [2018-09-30 10:14:48,517 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 56 states. [2018-09-30 10:14:48,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:48,728 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2018-09-30 10:14:48,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 10:14:48,728 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 68 [2018-09-30 10:14:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:48,729 INFO L225 Difference]: With dead ends: 80 [2018-09-30 10:14:48,729 INFO L226 Difference]: Without dead ends: 78 [2018-09-30 10:14:48,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=851, Invalid=2229, Unknown=0, NotChecked=0, Total=3080 [2018-09-30 10:14:48,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-30 10:14:48,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2018-09-30 10:14:48,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-30 10:14:48,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2018-09-30 10:14:48,737 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 68 [2018-09-30 10:14:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:48,737 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2018-09-30 10:14:48,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 10:14:48,738 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2018-09-30 10:14:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-30 10:14:48,739 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:48,739 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1] [2018-09-30 10:14:48,739 INFO L423 AbstractCegarLoop]: === Iteration 16 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:48,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:48,739 INFO L82 PathProgramCache]: Analyzing trace with hash -415978656, now seen corresponding path program 14 times [2018-09-30 10:14:48,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:48,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:48,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:48,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:14:48,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:49,184 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:49,184 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 10:14:49,202 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:14:49,235 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:14:49,235 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:49,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:50,127 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:50,127 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 59 [2018-09-30 10:14:50,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 10:14:50,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 10:14:50,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=972, Invalid=2568, Unknown=0, NotChecked=0, Total=3540 [2018-09-30 10:14:50,129 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 60 states. [2018-09-30 10:14:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:50,433 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-09-30 10:14:50,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 10:14:50,433 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 73 [2018-09-30 10:14:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:50,434 INFO L225 Difference]: With dead ends: 85 [2018-09-30 10:14:50,434 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 10:14:50,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=972, Invalid=2568, Unknown=0, NotChecked=0, Total=3540 [2018-09-30 10:14:50,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 10:14:50,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2018-09-30 10:14:50,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 10:14:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2018-09-30 10:14:50,458 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 73 [2018-09-30 10:14:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:50,458 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2018-09-30 10:14:50,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 10:14:50,458 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2018-09-30 10:14:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 10:14:50,460 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:50,460 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1] [2018-09-30 10:14:50,460 INFO L423 AbstractCegarLoop]: === Iteration 17 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:50,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:50,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2077592980, now seen corresponding path program 15 times [2018-09-30 10:14:50,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:50,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:50,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:50,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:50,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:50,996 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:50,996 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 10:14:51,003 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:14:51,032 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-30 10:14:51,032 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:51,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:51,885 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:51,885 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 63 [2018-09-30 10:14:51,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 10:14:51,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 10:14:51,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1101, Invalid=2931, Unknown=0, NotChecked=0, Total=4032 [2018-09-30 10:14:51,887 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand 64 states. [2018-09-30 10:14:52,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:52,325 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2018-09-30 10:14:52,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 10:14:52,327 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 78 [2018-09-30 10:14:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:52,328 INFO L225 Difference]: With dead ends: 90 [2018-09-30 10:14:52,328 INFO L226 Difference]: Without dead ends: 88 [2018-09-30 10:14:52,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2129 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1101, Invalid=2931, Unknown=0, NotChecked=0, Total=4032 [2018-09-30 10:14:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-30 10:14:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2018-09-30 10:14:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-30 10:14:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2018-09-30 10:14:52,335 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 78 [2018-09-30 10:14:52,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:52,335 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2018-09-30 10:14:52,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 10:14:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2018-09-30 10:14:52,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-30 10:14:52,336 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:52,336 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 1, 1, 1] [2018-09-30 10:14:52,337 INFO L423 AbstractCegarLoop]: === Iteration 18 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:52,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:52,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1630745312, now seen corresponding path program 16 times [2018-09-30 10:14:52,337 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:52,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:52,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:52,338 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:52,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:53,001 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:53,001 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 10:14:53,008 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:14:53,029 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:14:53,030 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:53,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:54,292 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:54,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 67 [2018-09-30 10:14:54,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 10:14:54,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 10:14:54,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=3318, Unknown=0, NotChecked=0, Total=4556 [2018-09-30 10:14:54,295 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 68 states. [2018-09-30 10:14:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:54,673 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2018-09-30 10:14:54,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 10:14:54,674 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 83 [2018-09-30 10:14:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:54,674 INFO L225 Difference]: With dead ends: 95 [2018-09-30 10:14:54,675 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 10:14:54,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2423 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1238, Invalid=3318, Unknown=0, NotChecked=0, Total=4556 [2018-09-30 10:14:54,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 10:14:54,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2018-09-30 10:14:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-30 10:14:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2018-09-30 10:14:54,681 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 83 [2018-09-30 10:14:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:54,682 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2018-09-30 10:14:54,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 10:14:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2018-09-30 10:14:54,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-30 10:14:54,683 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:54,683 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 1, 1, 1] [2018-09-30 10:14:54,683 INFO L423 AbstractCegarLoop]: === Iteration 19 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:54,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:54,684 INFO L82 PathProgramCache]: Analyzing trace with hash -778790164, now seen corresponding path program 17 times [2018-09-30 10:14:54,684 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:54,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:54,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:54,685 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:54,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:55,474 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:55,474 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 10:14:55,481 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:14:55,512 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-30 10:14:55,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:55,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:56,721 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:56,721 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 71 [2018-09-30 10:14:56,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 10:14:56,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 10:14:56,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1383, Invalid=3729, Unknown=0, NotChecked=0, Total=5112 [2018-09-30 10:14:56,724 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 72 states. [2018-09-30 10:14:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:57,021 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2018-09-30 10:14:57,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 10:14:57,021 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 88 [2018-09-30 10:14:57,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:57,022 INFO L225 Difference]: With dead ends: 100 [2018-09-30 10:14:57,022 INFO L226 Difference]: Without dead ends: 98 [2018-09-30 10:14:57,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2736 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1383, Invalid=3729, Unknown=0, NotChecked=0, Total=5112 [2018-09-30 10:14:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-30 10:14:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2018-09-30 10:14:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-30 10:14:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2018-09-30 10:14:57,028 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 88 [2018-09-30 10:14:57,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:57,028 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2018-09-30 10:14:57,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 10:14:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2018-09-30 10:14:57,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-30 10:14:57,029 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:57,029 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 1, 1, 1] [2018-09-30 10:14:57,030 INFO L423 AbstractCegarLoop]: === Iteration 20 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:57,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:57,030 INFO L82 PathProgramCache]: Analyzing trace with hash 38689376, now seen corresponding path program 18 times [2018-09-30 10:14:57,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:57,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:57,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:57,031 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:57,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:14:57,678 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:57,678 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:14:57,678 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 10:14:57,686 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:14:57,740 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 10:14:57,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:14:57,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:14:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:14:59,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:14:59,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 75 [2018-09-30 10:14:59,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 10:14:59,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 10:14:59,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1536, Invalid=4164, Unknown=0, NotChecked=0, Total=5700 [2018-09-30 10:14:59,286 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand 76 states. [2018-09-30 10:14:59,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:14:59,534 INFO L93 Difference]: Finished difference Result 105 states and 125 transitions. [2018-09-30 10:14:59,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 10:14:59,535 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 93 [2018-09-30 10:14:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:14:59,536 INFO L225 Difference]: With dead ends: 105 [2018-09-30 10:14:59,536 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 10:14:59,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3068 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1536, Invalid=4164, Unknown=0, NotChecked=0, Total=5700 [2018-09-30 10:14:59,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 10:14:59,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-09-30 10:14:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 10:14:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-09-30 10:14:59,540 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 93 [2018-09-30 10:14:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:14:59,541 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-09-30 10:14:59,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 10:14:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2018-09-30 10:14:59,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 10:14:59,541 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:14:59,541 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 1, 1, 1] [2018-09-30 10:14:59,542 INFO L423 AbstractCegarLoop]: === Iteration 21 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:14:59,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:14:59,542 INFO L82 PathProgramCache]: Analyzing trace with hash 281420652, now seen corresponding path program 19 times [2018-09-30 10:14:59,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:14:59,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:14:59,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:59,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:14:59,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:14:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:00,396 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:00,396 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 10:15:00,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:15:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:00,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:01,791 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:01,791 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 79 [2018-09-30 10:15:01,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 10:15:01,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 10:15:01,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1697, Invalid=4623, Unknown=0, NotChecked=0, Total=6320 [2018-09-30 10:15:01,792 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 80 states. [2018-09-30 10:15:02,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:02,087 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2018-09-30 10:15:02,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 10:15:02,088 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 98 [2018-09-30 10:15:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:02,089 INFO L225 Difference]: With dead ends: 110 [2018-09-30 10:15:02,089 INFO L226 Difference]: Without dead ends: 108 [2018-09-30 10:15:02,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3419 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1697, Invalid=4623, Unknown=0, NotChecked=0, Total=6320 [2018-09-30 10:15:02,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-30 10:15:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-09-30 10:15:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-30 10:15:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2018-09-30 10:15:02,094 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 98 [2018-09-30 10:15:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:02,094 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2018-09-30 10:15:02,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 10:15:02,095 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2018-09-30 10:15:02,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-30 10:15:02,096 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:02,096 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 1, 1, 1] [2018-09-30 10:15:02,096 INFO L423 AbstractCegarLoop]: === Iteration 22 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:02,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:02,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2025971232, now seen corresponding path program 20 times [2018-09-30 10:15:02,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:02,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:02,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:02,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:15:02,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:02,884 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:02,884 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 10:15:02,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:15:02,920 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:15:02,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:02,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:06,001 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:06,001 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 83 [2018-09-30 10:15:06,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 10:15:06,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 10:15:06,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1866, Invalid=5106, Unknown=0, NotChecked=0, Total=6972 [2018-09-30 10:15:06,003 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand 84 states. [2018-09-30 10:15:06,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:06,312 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2018-09-30 10:15:06,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 10:15:06,314 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 103 [2018-09-30 10:15:06,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:06,315 INFO L225 Difference]: With dead ends: 115 [2018-09-30 10:15:06,315 INFO L226 Difference]: Without dead ends: 113 [2018-09-30 10:15:06,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3789 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1866, Invalid=5106, Unknown=0, NotChecked=0, Total=6972 [2018-09-30 10:15:06,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-30 10:15:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2018-09-30 10:15:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-30 10:15:06,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 130 transitions. [2018-09-30 10:15:06,322 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 130 transitions. Word has length 103 [2018-09-30 10:15:06,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:06,322 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 130 transitions. [2018-09-30 10:15:06,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 10:15:06,322 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 130 transitions. [2018-09-30 10:15:06,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-30 10:15:06,323 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:06,323 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 1, 1, 1] [2018-09-30 10:15:06,323 INFO L423 AbstractCegarLoop]: === Iteration 23 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:06,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:06,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1207497748, now seen corresponding path program 21 times [2018-09-30 10:15:06,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:06,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:06,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:06,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:15:06,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:07,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:07,120 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 10:15:07,130 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:15:07,164 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-30 10:15:07,164 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:07,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 0 proven. 1071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:08,884 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:08,884 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 87 [2018-09-30 10:15:08,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 10:15:08,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 10:15:08,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2043, Invalid=5613, Unknown=0, NotChecked=0, Total=7656 [2018-09-30 10:15:08,887 INFO L87 Difference]: Start difference. First operand 109 states and 130 transitions. Second operand 88 states. [2018-09-30 10:15:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:09,258 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2018-09-30 10:15:09,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 10:15:09,258 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 108 [2018-09-30 10:15:09,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:09,260 INFO L225 Difference]: With dead ends: 120 [2018-09-30 10:15:09,260 INFO L226 Difference]: Without dead ends: 118 [2018-09-30 10:15:09,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4178 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2043, Invalid=5613, Unknown=0, NotChecked=0, Total=7656 [2018-09-30 10:15:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-30 10:15:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-09-30 10:15:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-09-30 10:15:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 136 transitions. [2018-09-30 10:15:09,266 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 136 transitions. Word has length 108 [2018-09-30 10:15:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:09,266 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 136 transitions. [2018-09-30 10:15:09,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 10:15:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 136 transitions. [2018-09-30 10:15:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-30 10:15:09,267 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:09,267 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1] [2018-09-30 10:15:09,268 INFO L423 AbstractCegarLoop]: === Iteration 24 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:09,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:09,268 INFO L82 PathProgramCache]: Analyzing trace with hash 649759072, now seen corresponding path program 22 times [2018-09-30 10:15:09,268 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:09,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:09,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:09,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:15:09,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:10,186 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:10,186 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 10:15:10,193 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:15:10,219 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:15:10,219 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:10,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1177 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:11,685 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:11,686 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 91 [2018-09-30 10:15:11,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 10:15:11,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 10:15:11,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2228, Invalid=6144, Unknown=0, NotChecked=0, Total=8372 [2018-09-30 10:15:11,687 INFO L87 Difference]: Start difference. First operand 114 states and 136 transitions. Second operand 92 states. [2018-09-30 10:15:11,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:11,999 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2018-09-30 10:15:11,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 10:15:12,000 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 113 [2018-09-30 10:15:12,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:12,001 INFO L225 Difference]: With dead ends: 125 [2018-09-30 10:15:12,001 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 10:15:12,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4586 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2228, Invalid=6144, Unknown=0, NotChecked=0, Total=8372 [2018-09-30 10:15:12,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 10:15:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2018-09-30 10:15:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 10:15:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2018-09-30 10:15:12,008 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 113 [2018-09-30 10:15:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:12,008 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2018-09-30 10:15:12,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 10:15:12,008 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2018-09-30 10:15:12,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 10:15:12,009 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:12,009 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 1, 1, 1] [2018-09-30 10:15:12,009 INFO L423 AbstractCegarLoop]: === Iteration 25 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:12,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:12,010 INFO L82 PathProgramCache]: Analyzing trace with hash 60773484, now seen corresponding path program 23 times [2018-09-30 10:15:12,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:12,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:12,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:12,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:15:12,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:12,958 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:12,958 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:15:12,967 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:15:13,001 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-30 10:15:13,001 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:13,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 0 proven. 1288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:15,046 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:15,046 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2018-09-30 10:15:15,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 10:15:15,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 10:15:15,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2421, Invalid=6699, Unknown=0, NotChecked=0, Total=9120 [2018-09-30 10:15:15,048 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 96 states. [2018-09-30 10:15:15,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:15,450 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2018-09-30 10:15:15,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 10:15:15,451 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 118 [2018-09-30 10:15:15,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:15,452 INFO L225 Difference]: With dead ends: 130 [2018-09-30 10:15:15,452 INFO L226 Difference]: Without dead ends: 128 [2018-09-30 10:15:15,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5013 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2421, Invalid=6699, Unknown=0, NotChecked=0, Total=9120 [2018-09-30 10:15:15,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-30 10:15:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2018-09-30 10:15:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-30 10:15:15,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2018-09-30 10:15:15,457 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 118 [2018-09-30 10:15:15,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:15,458 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2018-09-30 10:15:15,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 10:15:15,458 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2018-09-30 10:15:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-30 10:15:15,458 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:15,459 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 1, 1, 1] [2018-09-30 10:15:15,459 INFO L423 AbstractCegarLoop]: === Iteration 26 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:15,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:15,459 INFO L82 PathProgramCache]: Analyzing trace with hash 293310688, now seen corresponding path program 24 times [2018-09-30 10:15:15,459 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:15,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:15,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:15,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:15:15,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:16,403 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:16,403 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 10:15:16,411 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:15:16,448 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 10:15:16,449 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:16,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:18,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:18,229 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:18,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 99 [2018-09-30 10:15:18,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 10:15:18,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 10:15:18,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2622, Invalid=7278, Unknown=0, NotChecked=0, Total=9900 [2018-09-30 10:15:18,231 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 100 states. [2018-09-30 10:15:18,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:18,833 INFO L93 Difference]: Finished difference Result 135 states and 161 transitions. [2018-09-30 10:15:18,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 10:15:18,833 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 123 [2018-09-30 10:15:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:18,834 INFO L225 Difference]: With dead ends: 135 [2018-09-30 10:15:18,834 INFO L226 Difference]: Without dead ends: 133 [2018-09-30 10:15:18,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5459 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2622, Invalid=7278, Unknown=0, NotChecked=0, Total=9900 [2018-09-30 10:15:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-30 10:15:18,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-09-30 10:15:18,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-30 10:15:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 154 transitions. [2018-09-30 10:15:18,841 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 154 transitions. Word has length 123 [2018-09-30 10:15:18,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:18,841 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 154 transitions. [2018-09-30 10:15:18,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 10:15:18,841 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 154 transitions. [2018-09-30 10:15:18,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-30 10:15:18,842 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:18,842 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 1, 1, 1] [2018-09-30 10:15:18,843 INFO L423 AbstractCegarLoop]: === Iteration 27 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:18,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1977023724, now seen corresponding path program 25 times [2018-09-30 10:15:18,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:18,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:18,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:18,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:15:18,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:20,020 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:20,020 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:15:20,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:15:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:20,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1525 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:21,851 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:21,852 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 103 [2018-09-30 10:15:21,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 10:15:21,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 10:15:21,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2831, Invalid=7881, Unknown=0, NotChecked=0, Total=10712 [2018-09-30 10:15:21,854 INFO L87 Difference]: Start difference. First operand 129 states and 154 transitions. Second operand 104 states. [2018-09-30 10:15:22,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:22,272 INFO L93 Difference]: Finished difference Result 140 states and 167 transitions. [2018-09-30 10:15:22,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 10:15:22,273 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 128 [2018-09-30 10:15:22,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:22,274 INFO L225 Difference]: With dead ends: 140 [2018-09-30 10:15:22,274 INFO L226 Difference]: Without dead ends: 138 [2018-09-30 10:15:22,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5924 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2831, Invalid=7881, Unknown=0, NotChecked=0, Total=10712 [2018-09-30 10:15:22,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-30 10:15:22,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2018-09-30 10:15:22,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-09-30 10:15:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 160 transitions. [2018-09-30 10:15:22,281 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 160 transitions. Word has length 128 [2018-09-30 10:15:22,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:22,281 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 160 transitions. [2018-09-30 10:15:22,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 10:15:22,281 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 160 transitions. [2018-09-30 10:15:22,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-30 10:15:22,282 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:22,282 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 1, 1, 1] [2018-09-30 10:15:22,283 INFO L423 AbstractCegarLoop]: === Iteration 28 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:22,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:22,283 INFO L82 PathProgramCache]: Analyzing trace with hash -231131040, now seen corresponding path program 26 times [2018-09-30 10:15:22,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:22,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:22,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:22,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:15:22,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:23,635 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:23,635 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 10:15:23,643 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:15:23,676 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:15:23,676 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:23,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1651 backedges. 0 proven. 1651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:25,834 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:25,834 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 107 [2018-09-30 10:15:25,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 10:15:25,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 10:15:25,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3048, Invalid=8508, Unknown=0, NotChecked=0, Total=11556 [2018-09-30 10:15:25,836 INFO L87 Difference]: Start difference. First operand 134 states and 160 transitions. Second operand 108 states. [2018-09-30 10:15:26,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:26,627 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2018-09-30 10:15:26,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 10:15:26,627 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 133 [2018-09-30 10:15:26,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:26,628 INFO L225 Difference]: With dead ends: 145 [2018-09-30 10:15:26,628 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 10:15:26,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6408 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3048, Invalid=8508, Unknown=0, NotChecked=0, Total=11556 [2018-09-30 10:15:26,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 10:15:26,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 139. [2018-09-30 10:15:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 10:15:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 166 transitions. [2018-09-30 10:15:26,634 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 166 transitions. Word has length 133 [2018-09-30 10:15:26,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:26,634 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 166 transitions. [2018-09-30 10:15:26,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 10:15:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 166 transitions. [2018-09-30 10:15:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 10:15:26,635 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:26,635 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 1, 1, 1] [2018-09-30 10:15:26,635 INFO L423 AbstractCegarLoop]: === Iteration 29 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:26,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:26,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1458963820, now seen corresponding path program 27 times [2018-09-30 10:15:26,636 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:26,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:26,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:26,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:15:26,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:27,836 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:27,836 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 10:15:27,844 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:15:27,896 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-30 10:15:27,896 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:27,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 0 proven. 1782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:30,753 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:30,754 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 111 [2018-09-30 10:15:30,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 10:15:30,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 10:15:30,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3273, Invalid=9159, Unknown=0, NotChecked=0, Total=12432 [2018-09-30 10:15:30,756 INFO L87 Difference]: Start difference. First operand 139 states and 166 transitions. Second operand 112 states. [2018-09-30 10:15:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:31,232 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2018-09-30 10:15:31,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 10:15:31,232 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 138 [2018-09-30 10:15:31,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:31,234 INFO L225 Difference]: With dead ends: 150 [2018-09-30 10:15:31,234 INFO L226 Difference]: Without dead ends: 148 [2018-09-30 10:15:31,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6911 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3273, Invalid=9159, Unknown=0, NotChecked=0, Total=12432 [2018-09-30 10:15:31,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-30 10:15:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2018-09-30 10:15:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-30 10:15:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 172 transitions. [2018-09-30 10:15:31,240 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 172 transitions. Word has length 138 [2018-09-30 10:15:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:31,240 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 172 transitions. [2018-09-30 10:15:31,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 10:15:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 172 transitions. [2018-09-30 10:15:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-30 10:15:31,241 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:31,241 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 1, 1, 1] [2018-09-30 10:15:31,241 INFO L423 AbstractCegarLoop]: === Iteration 30 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:31,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:31,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1839955936, now seen corresponding path program 28 times [2018-09-30 10:15:31,242 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:31,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:31,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:31,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:15:31,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:32,894 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:32,894 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 10:15:32,903 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:15:32,938 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:15:32,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:32,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1918 backedges. 0 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:35,800 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:35,801 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 115 [2018-09-30 10:15:35,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 10:15:35,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 10:15:35,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3506, Invalid=9834, Unknown=0, NotChecked=0, Total=13340 [2018-09-30 10:15:35,803 INFO L87 Difference]: Start difference. First operand 144 states and 172 transitions. Second operand 116 states. [2018-09-30 10:15:36,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:36,453 INFO L93 Difference]: Finished difference Result 155 states and 185 transitions. [2018-09-30 10:15:36,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 10:15:36,454 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 143 [2018-09-30 10:15:36,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:36,455 INFO L225 Difference]: With dead ends: 155 [2018-09-30 10:15:36,455 INFO L226 Difference]: Without dead ends: 153 [2018-09-30 10:15:36,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7433 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3506, Invalid=9834, Unknown=0, NotChecked=0, Total=13340 [2018-09-30 10:15:36,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-09-30 10:15:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-09-30 10:15:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 10:15:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2018-09-30 10:15:36,463 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 143 [2018-09-30 10:15:36,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:36,464 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2018-09-30 10:15:36,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 10:15:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2018-09-30 10:15:36,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-30 10:15:36,465 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:36,465 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 1, 1, 1] [2018-09-30 10:15:36,465 INFO L423 AbstractCegarLoop]: === Iteration 31 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:36,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:36,466 INFO L82 PathProgramCache]: Analyzing trace with hash 893677036, now seen corresponding path program 29 times [2018-09-30 10:15:36,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:36,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:36,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:36,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:15:36,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:37,943 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:37,943 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 10:15:37,951 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:15:37,999 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-30 10:15:37,999 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:38,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:40,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2059 backedges. 0 proven. 2059 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:40,741 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:40,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 119 [2018-09-30 10:15:40,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 10:15:40,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 10:15:40,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3747, Invalid=10533, Unknown=0, NotChecked=0, Total=14280 [2018-09-30 10:15:40,743 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 120 states. [2018-09-30 10:15:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:41,296 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2018-09-30 10:15:41,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 10:15:41,296 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 148 [2018-09-30 10:15:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:41,302 INFO L225 Difference]: With dead ends: 160 [2018-09-30 10:15:41,302 INFO L226 Difference]: Without dead ends: 158 [2018-09-30 10:15:41,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7974 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3747, Invalid=10533, Unknown=0, NotChecked=0, Total=14280 [2018-09-30 10:15:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-09-30 10:15:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-09-30 10:15:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-09-30 10:15:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2018-09-30 10:15:41,309 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 148 [2018-09-30 10:15:41,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:41,309 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2018-09-30 10:15:41,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 10:15:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2018-09-30 10:15:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-30 10:15:41,310 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:41,310 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 1, 1, 1] [2018-09-30 10:15:41,311 INFO L423 AbstractCegarLoop]: === Iteration 32 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:41,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:41,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1567987872, now seen corresponding path program 30 times [2018-09-30 10:15:41,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:41,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:41,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:41,312 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:15:41,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:42,755 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:42,755 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 10:15:42,763 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:15:42,823 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 10:15:42,824 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:42,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 0 proven. 2205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:45,616 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:45,617 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 123 [2018-09-30 10:15:45,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 10:15:45,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 10:15:45,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3996, Invalid=11256, Unknown=0, NotChecked=0, Total=15252 [2018-09-30 10:15:45,619 INFO L87 Difference]: Start difference. First operand 154 states and 184 transitions. Second operand 124 states. [2018-09-30 10:15:46,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:46,135 INFO L93 Difference]: Finished difference Result 165 states and 197 transitions. [2018-09-30 10:15:46,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 10:15:46,135 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 153 [2018-09-30 10:15:46,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:46,136 INFO L225 Difference]: With dead ends: 165 [2018-09-30 10:15:46,136 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 10:15:46,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8534 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3996, Invalid=11256, Unknown=0, NotChecked=0, Total=15252 [2018-09-30 10:15:46,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 10:15:46,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2018-09-30 10:15:46,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 10:15:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2018-09-30 10:15:46,143 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 153 [2018-09-30 10:15:46,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:46,144 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2018-09-30 10:15:46,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 10:15:46,144 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2018-09-30 10:15:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 10:15:46,145 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:46,145 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1] [2018-09-30 10:15:46,145 INFO L423 AbstractCegarLoop]: === Iteration 33 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:46,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:46,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1695168108, now seen corresponding path program 31 times [2018-09-30 10:15:46,146 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:46,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:46,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:46,147 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:15:46,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:47,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:47,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:47,811 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:15:47,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:15:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:47,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:50,849 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:50,850 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 127 [2018-09-30 10:15:50,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-30 10:15:50,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-30 10:15:50,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4253, Invalid=12003, Unknown=0, NotChecked=0, Total=16256 [2018-09-30 10:15:50,852 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand 128 states. [2018-09-30 10:15:51,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:51,427 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2018-09-30 10:15:51,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 10:15:51,428 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 158 [2018-09-30 10:15:51,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:51,429 INFO L225 Difference]: With dead ends: 170 [2018-09-30 10:15:51,429 INFO L226 Difference]: Without dead ends: 168 [2018-09-30 10:15:51,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9113 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4253, Invalid=12003, Unknown=0, NotChecked=0, Total=16256 [2018-09-30 10:15:51,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-09-30 10:15:51,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 164. [2018-09-30 10:15:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-09-30 10:15:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 196 transitions. [2018-09-30 10:15:51,435 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 196 transitions. Word has length 158 [2018-09-30 10:15:51,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:51,436 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 196 transitions. [2018-09-30 10:15:51,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-30 10:15:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 196 transitions. [2018-09-30 10:15:51,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-30 10:15:51,437 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:51,437 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 1, 1, 1] [2018-09-30 10:15:51,437 INFO L423 AbstractCegarLoop]: === Iteration 34 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:51,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:51,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1450316064, now seen corresponding path program 32 times [2018-09-30 10:15:51,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:51,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:51,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:51,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:15:51,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:53,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:53,060 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:53,060 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 10:15:53,068 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:15:53,106 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:15:53,106 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:53,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:15:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2512 backedges. 0 proven. 2512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:56,125 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:15:56,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 131 [2018-09-30 10:15:56,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-30 10:15:56,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-30 10:15:56,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4518, Invalid=12774, Unknown=0, NotChecked=0, Total=17292 [2018-09-30 10:15:56,128 INFO L87 Difference]: Start difference. First operand 164 states and 196 transitions. Second operand 132 states. [2018-09-30 10:15:56,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:15:56,716 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2018-09-30 10:15:56,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 10:15:56,716 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 163 [2018-09-30 10:15:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:15:56,717 INFO L225 Difference]: With dead ends: 175 [2018-09-30 10:15:56,717 INFO L226 Difference]: Without dead ends: 173 [2018-09-30 10:15:56,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9711 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4518, Invalid=12774, Unknown=0, NotChecked=0, Total=17292 [2018-09-30 10:15:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-09-30 10:15:56,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2018-09-30 10:15:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-09-30 10:15:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2018-09-30 10:15:56,725 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 163 [2018-09-30 10:15:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:15:56,725 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2018-09-30 10:15:56,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-30 10:15:56,726 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2018-09-30 10:15:56,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-30 10:15:56,726 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:15:56,727 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 1, 1, 1] [2018-09-30 10:15:56,727 INFO L423 AbstractCegarLoop]: === Iteration 35 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:15:56,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:15:56,727 INFO L82 PathProgramCache]: Analyzing trace with hash -2138087700, now seen corresponding path program 33 times [2018-09-30 10:15:56,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:15:56,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:15:56,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:56,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:15:56,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:15:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:15:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:15:58,526 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:15:58,527 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 10:15:58,535 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:15:58,590 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-30 10:15:58,590 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:15:58,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:16:01,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2673 backedges. 0 proven. 2673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:01,796 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:16:01,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 135 [2018-09-30 10:16:01,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-09-30 10:16:01,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-09-30 10:16:01,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4791, Invalid=13569, Unknown=0, NotChecked=0, Total=18360 [2018-09-30 10:16:01,799 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 136 states. [2018-09-30 10:16:02,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:16:02,563 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2018-09-30 10:16:02,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 10:16:02,563 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 168 [2018-09-30 10:16:02,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:16:02,564 INFO L225 Difference]: With dead ends: 180 [2018-09-30 10:16:02,564 INFO L226 Difference]: Without dead ends: 178 [2018-09-30 10:16:02,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10328 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4791, Invalid=13569, Unknown=0, NotChecked=0, Total=18360 [2018-09-30 10:16:02,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-09-30 10:16:02,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2018-09-30 10:16:02,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-09-30 10:16:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2018-09-30 10:16:02,573 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 168 [2018-09-30 10:16:02,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:16:02,573 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2018-09-30 10:16:02,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-09-30 10:16:02,573 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2018-09-30 10:16:02,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-30 10:16:02,574 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:16:02,574 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 1, 1, 1] [2018-09-30 10:16:02,575 INFO L423 AbstractCegarLoop]: === Iteration 36 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:16:02,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:16:02,575 INFO L82 PathProgramCache]: Analyzing trace with hash 359536224, now seen corresponding path program 34 times [2018-09-30 10:16:02,575 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:16:02,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:16:02,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:02,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:16:02,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:16:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:04,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:16:04,397 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 10:16:04,404 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:16:04,450 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:16:04,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:16:04,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:16:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2839 backedges. 0 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:08,342 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:16:08,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 139 [2018-09-30 10:16:08,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-09-30 10:16:08,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-09-30 10:16:08,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5072, Invalid=14388, Unknown=0, NotChecked=0, Total=19460 [2018-09-30 10:16:08,345 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand 140 states. [2018-09-30 10:16:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:16:08,966 INFO L93 Difference]: Finished difference Result 185 states and 221 transitions. [2018-09-30 10:16:08,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 10:16:08,966 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 173 [2018-09-30 10:16:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:16:08,967 INFO L225 Difference]: With dead ends: 185 [2018-09-30 10:16:08,967 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 10:16:08,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10964 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5072, Invalid=14388, Unknown=0, NotChecked=0, Total=19460 [2018-09-30 10:16:08,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 10:16:08,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2018-09-30 10:16:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 10:16:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 214 transitions. [2018-09-30 10:16:08,974 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 214 transitions. Word has length 173 [2018-09-30 10:16:08,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:16:08,975 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 214 transitions. [2018-09-30 10:16:08,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-09-30 10:16:08,975 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 214 transitions. [2018-09-30 10:16:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 10:16:08,976 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:16:08,976 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 1, 1, 1] [2018-09-30 10:16:08,976 INFO L423 AbstractCegarLoop]: === Iteration 37 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:16:08,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:16:08,977 INFO L82 PathProgramCache]: Analyzing trace with hash -400824468, now seen corresponding path program 35 times [2018-09-30 10:16:08,977 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:16:08,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:16:08,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:08,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:16:08,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:16:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:12,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:16:12,072 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 10:16:12,080 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:16:12,144 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-30 10:16:12,144 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:16:12,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:16:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3010 backedges. 0 proven. 3010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:15,665 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:16:15,665 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 143 [2018-09-30 10:16:15,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-09-30 10:16:15,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-09-30 10:16:15,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5361, Invalid=15231, Unknown=0, NotChecked=0, Total=20592 [2018-09-30 10:16:15,668 INFO L87 Difference]: Start difference. First operand 179 states and 214 transitions. Second operand 144 states. [2018-09-30 10:16:16,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:16:16,344 INFO L93 Difference]: Finished difference Result 190 states and 227 transitions. [2018-09-30 10:16:16,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 10:16:16,344 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 178 [2018-09-30 10:16:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:16:16,345 INFO L225 Difference]: With dead ends: 190 [2018-09-30 10:16:16,346 INFO L226 Difference]: Without dead ends: 188 [2018-09-30 10:16:16,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11619 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=5361, Invalid=15231, Unknown=0, NotChecked=0, Total=20592 [2018-09-30 10:16:16,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-09-30 10:16:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2018-09-30 10:16:16,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-09-30 10:16:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2018-09-30 10:16:16,354 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 178 [2018-09-30 10:16:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:16:16,355 INFO L480 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2018-09-30 10:16:16,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-09-30 10:16:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2018-09-30 10:16:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-09-30 10:16:16,356 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:16:16,356 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 1, 1, 1] [2018-09-30 10:16:16,356 INFO L423 AbstractCegarLoop]: === Iteration 38 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:16:16,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:16:16,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1927470560, now seen corresponding path program 36 times [2018-09-30 10:16:16,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:16:16,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:16:16,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:16,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:16:16,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:16:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:18,752 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:16:18,752 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 10:16:18,762 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:16:18,822 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 10:16:18,822 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:16:18,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:16:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3186 backedges. 0 proven. 3186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:23,190 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:16:23,190 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 147 [2018-09-30 10:16:23,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-09-30 10:16:23,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-09-30 10:16:23,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5658, Invalid=16098, Unknown=0, NotChecked=0, Total=21756 [2018-09-30 10:16:23,194 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand 148 states. [2018-09-30 10:16:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:16:23,808 INFO L93 Difference]: Finished difference Result 195 states and 233 transitions. [2018-09-30 10:16:23,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 10:16:23,809 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 183 [2018-09-30 10:16:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:16:23,810 INFO L225 Difference]: With dead ends: 195 [2018-09-30 10:16:23,810 INFO L226 Difference]: Without dead ends: 193 [2018-09-30 10:16:23,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12293 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=5658, Invalid=16098, Unknown=0, NotChecked=0, Total=21756 [2018-09-30 10:16:23,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-09-30 10:16:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2018-09-30 10:16:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-09-30 10:16:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 226 transitions. [2018-09-30 10:16:23,818 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 226 transitions. Word has length 183 [2018-09-30 10:16:23,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:16:23,818 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 226 transitions. [2018-09-30 10:16:23,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-09-30 10:16:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 226 transitions. [2018-09-30 10:16:23,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-09-30 10:16:23,819 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:16:23,819 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 1, 1, 1] [2018-09-30 10:16:23,819 INFO L423 AbstractCegarLoop]: === Iteration 39 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:16:23,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:16:23,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1106759660, now seen corresponding path program 37 times [2018-09-30 10:16:23,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:16:23,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:16:23,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:23,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:16:23,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:16:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:27,285 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:16:27,285 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 10:16:27,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:16:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:16:27,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:16:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3367 backedges. 0 proven. 3367 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:31,277 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:16:31,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 151 [2018-09-30 10:16:31,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-09-30 10:16:31,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-09-30 10:16:31,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5963, Invalid=16989, Unknown=0, NotChecked=0, Total=22952 [2018-09-30 10:16:31,280 INFO L87 Difference]: Start difference. First operand 189 states and 226 transitions. Second operand 152 states. [2018-09-30 10:16:32,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:16:32,186 INFO L93 Difference]: Finished difference Result 200 states and 239 transitions. [2018-09-30 10:16:32,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 10:16:32,187 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 188 [2018-09-30 10:16:32,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:16:32,187 INFO L225 Difference]: With dead ends: 200 [2018-09-30 10:16:32,188 INFO L226 Difference]: Without dead ends: 198 [2018-09-30 10:16:32,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12986 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=5963, Invalid=16989, Unknown=0, NotChecked=0, Total=22952 [2018-09-30 10:16:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-09-30 10:16:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2018-09-30 10:16:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-09-30 10:16:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 232 transitions. [2018-09-30 10:16:32,196 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 232 transitions. Word has length 188 [2018-09-30 10:16:32,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:16:32,196 INFO L480 AbstractCegarLoop]: Abstraction has 194 states and 232 transitions. [2018-09-30 10:16:32,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-09-30 10:16:32,196 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 232 transitions. [2018-09-30 10:16:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-09-30 10:16:32,197 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:16:32,197 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 38, 1, 1, 1] [2018-09-30 10:16:32,197 INFO L423 AbstractCegarLoop]: === Iteration 40 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:16:32,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:16:32,198 INFO L82 PathProgramCache]: Analyzing trace with hash -928758432, now seen corresponding path program 38 times [2018-09-30 10:16:32,198 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:16:32,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:16:32,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:32,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:16:32,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:16:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:35,704 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:16:35,704 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 10:16:35,712 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:16:35,775 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:16:35,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:16:35,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:16:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3553 backedges. 0 proven. 3553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:39,887 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:16:39,887 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 155 [2018-09-30 10:16:39,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-09-30 10:16:39,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-09-30 10:16:39,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6276, Invalid=17904, Unknown=0, NotChecked=0, Total=24180 [2018-09-30 10:16:39,890 INFO L87 Difference]: Start difference. First operand 194 states and 232 transitions. Second operand 156 states. [2018-09-30 10:16:40,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:16:40,772 INFO L93 Difference]: Finished difference Result 205 states and 245 transitions. [2018-09-30 10:16:40,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 10:16:40,772 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 193 [2018-09-30 10:16:40,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:16:40,773 INFO L225 Difference]: With dead ends: 205 [2018-09-30 10:16:40,774 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 10:16:40,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13698 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=6276, Invalid=17904, Unknown=0, NotChecked=0, Total=24180 [2018-09-30 10:16:40,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 10:16:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2018-09-30 10:16:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 10:16:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2018-09-30 10:16:40,781 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 193 [2018-09-30 10:16:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:16:40,781 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2018-09-30 10:16:40,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-09-30 10:16:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2018-09-30 10:16:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 10:16:40,782 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:16:40,782 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 39, 1, 1, 1] [2018-09-30 10:16:40,782 INFO L423 AbstractCegarLoop]: === Iteration 41 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:16:40,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:16:40,783 INFO L82 PathProgramCache]: Analyzing trace with hash -93644692, now seen corresponding path program 39 times [2018-09-30 10:16:40,783 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:16:40,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:16:40,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:40,784 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:16:40,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:16:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:43,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:16:43,860 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:16:43,869 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:16:43,937 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-30 10:16:43,937 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:16:43,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:16:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3744 backedges. 0 proven. 3744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:48,226 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:16:48,226 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 159 [2018-09-30 10:16:48,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-09-30 10:16:48,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-09-30 10:16:48,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6597, Invalid=18843, Unknown=0, NotChecked=0, Total=25440 [2018-09-30 10:16:48,230 INFO L87 Difference]: Start difference. First operand 199 states and 238 transitions. Second operand 160 states. [2018-09-30 10:16:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:16:49,000 INFO L93 Difference]: Finished difference Result 210 states and 251 transitions. [2018-09-30 10:16:49,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 10:16:49,000 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 198 [2018-09-30 10:16:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:16:49,001 INFO L225 Difference]: With dead ends: 210 [2018-09-30 10:16:49,001 INFO L226 Difference]: Without dead ends: 208 [2018-09-30 10:16:49,002 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14429 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=6597, Invalid=18843, Unknown=0, NotChecked=0, Total=25440 [2018-09-30 10:16:49,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-09-30 10:16:49,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2018-09-30 10:16:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-09-30 10:16:49,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 244 transitions. [2018-09-30 10:16:49,008 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 244 transitions. Word has length 198 [2018-09-30 10:16:49,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:16:49,009 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 244 transitions. [2018-09-30 10:16:49,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-09-30 10:16:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 244 transitions. [2018-09-30 10:16:49,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-30 10:16:49,010 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:16:49,010 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 40, 1, 1, 1] [2018-09-30 10:16:49,010 INFO L423 AbstractCegarLoop]: === Iteration 42 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:16:49,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:16:49,010 INFO L82 PathProgramCache]: Analyzing trace with hash 392842464, now seen corresponding path program 40 times [2018-09-30 10:16:49,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:16:49,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:16:49,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:49,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:16:49,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:16:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:52,589 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:16:52,589 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:16:52,597 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:16:52,648 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:16:52,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:16:52,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:16:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 3940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:16:57,005 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:16:57,005 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 163 [2018-09-30 10:16:57,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-09-30 10:16:57,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-09-30 10:16:57,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6926, Invalid=19806, Unknown=0, NotChecked=0, Total=26732 [2018-09-30 10:16:57,009 INFO L87 Difference]: Start difference. First operand 204 states and 244 transitions. Second operand 164 states. [2018-09-30 10:16:57,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:16:57,893 INFO L93 Difference]: Finished difference Result 215 states and 257 transitions. [2018-09-30 10:16:57,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 10:16:57,893 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 203 [2018-09-30 10:16:57,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:16:57,895 INFO L225 Difference]: With dead ends: 215 [2018-09-30 10:16:57,895 INFO L226 Difference]: Without dead ends: 213 [2018-09-30 10:16:57,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15179 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=6926, Invalid=19806, Unknown=0, NotChecked=0, Total=26732 [2018-09-30 10:16:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-09-30 10:16:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-09-30 10:16:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-09-30 10:16:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2018-09-30 10:16:57,901 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 203 [2018-09-30 10:16:57,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:16:57,901 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2018-09-30 10:16:57,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-09-30 10:16:57,902 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2018-09-30 10:16:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-30 10:16:57,902 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:16:57,902 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 41, 1, 1, 1] [2018-09-30 10:16:57,903 INFO L423 AbstractCegarLoop]: === Iteration 43 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:16:57,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:16:57,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1010974484, now seen corresponding path program 41 times [2018-09-30 10:16:57,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:16:57,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:16:57,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:57,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:16:57,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:16:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:17:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:00,906 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:17:00,906 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:17:00,914 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:17:00,987 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-30 10:17:00,987 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:17:00,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:17:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 0 proven. 4141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:08,409 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:17:08,409 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 167 [2018-09-30 10:17:08,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-09-30 10:17:08,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-09-30 10:17:08,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7263, Invalid=20793, Unknown=0, NotChecked=0, Total=28056 [2018-09-30 10:17:08,412 INFO L87 Difference]: Start difference. First operand 209 states and 250 transitions. Second operand 168 states. [2018-09-30 10:17:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:17:09,290 INFO L93 Difference]: Finished difference Result 220 states and 263 transitions. [2018-09-30 10:17:09,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 10:17:09,290 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 208 [2018-09-30 10:17:09,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:17:09,291 INFO L225 Difference]: With dead ends: 220 [2018-09-30 10:17:09,291 INFO L226 Difference]: Without dead ends: 218 [2018-09-30 10:17:09,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15948 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=7263, Invalid=20793, Unknown=0, NotChecked=0, Total=28056 [2018-09-30 10:17:09,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-09-30 10:17:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2018-09-30 10:17:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-09-30 10:17:09,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2018-09-30 10:17:09,300 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 208 [2018-09-30 10:17:09,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:17:09,300 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2018-09-30 10:17:09,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-09-30 10:17:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2018-09-30 10:17:09,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-09-30 10:17:09,301 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:17:09,301 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 42, 1, 1, 1] [2018-09-30 10:17:09,302 INFO L423 AbstractCegarLoop]: === Iteration 44 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:17:09,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:17:09,302 INFO L82 PathProgramCache]: Analyzing trace with hash -638782368, now seen corresponding path program 42 times [2018-09-30 10:17:09,302 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:17:09,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:17:09,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:09,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:17:09,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:17:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:12,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:17:12,196 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:17:12,205 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:17:12,278 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-30 10:17:12,278 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:17:12,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:17:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4347 backedges. 0 proven. 4347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:17,120 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:17:17,120 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 171 [2018-09-30 10:17:17,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-09-30 10:17:17,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-09-30 10:17:17,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7608, Invalid=21804, Unknown=0, NotChecked=0, Total=29412 [2018-09-30 10:17:17,123 INFO L87 Difference]: Start difference. First operand 214 states and 256 transitions. Second operand 172 states. [2018-09-30 10:17:17,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:17:17,959 INFO L93 Difference]: Finished difference Result 225 states and 269 transitions. [2018-09-30 10:17:17,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 10:17:17,959 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 213 [2018-09-30 10:17:17,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:17:17,960 INFO L225 Difference]: With dead ends: 225 [2018-09-30 10:17:17,960 INFO L226 Difference]: Without dead ends: 223 [2018-09-30 10:17:17,962 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16736 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=7608, Invalid=21804, Unknown=0, NotChecked=0, Total=29412 [2018-09-30 10:17:17,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-30 10:17:17,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 219. [2018-09-30 10:17:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-30 10:17:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 262 transitions. [2018-09-30 10:17:17,967 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 262 transitions. Word has length 213 [2018-09-30 10:17:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:17:17,967 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 262 transitions. [2018-09-30 10:17:17,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-09-30 10:17:17,968 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 262 transitions. [2018-09-30 10:17:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-30 10:17:17,968 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:17:17,968 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 43, 1, 1, 1] [2018-09-30 10:17:17,969 INFO L423 AbstractCegarLoop]: === Iteration 45 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:17:17,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:17:17,969 INFO L82 PathProgramCache]: Analyzing trace with hash 372754796, now seen corresponding path program 43 times [2018-09-30 10:17:17,969 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:17:17,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:17:17,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:17,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:17:17,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:17:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:20,639 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:17:20,639 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:17:20,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:17:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:17:20,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:17:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4558 backedges. 0 proven. 4558 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:25,600 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:17:25,600 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 175 [2018-09-30 10:17:25,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-09-30 10:17:25,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-09-30 10:17:25,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7961, Invalid=22839, Unknown=0, NotChecked=0, Total=30800 [2018-09-30 10:17:25,603 INFO L87 Difference]: Start difference. First operand 219 states and 262 transitions. Second operand 176 states. [2018-09-30 10:17:26,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:17:26,517 INFO L93 Difference]: Finished difference Result 230 states and 275 transitions. [2018-09-30 10:17:26,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 10:17:26,517 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 218 [2018-09-30 10:17:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:17:26,519 INFO L225 Difference]: With dead ends: 230 [2018-09-30 10:17:26,519 INFO L226 Difference]: Without dead ends: 228 [2018-09-30 10:17:26,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17543 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=7961, Invalid=22839, Unknown=0, NotChecked=0, Total=30800 [2018-09-30 10:17:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-09-30 10:17:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 224. [2018-09-30 10:17:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-09-30 10:17:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 268 transitions. [2018-09-30 10:17:26,526 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 268 transitions. Word has length 218 [2018-09-30 10:17:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:17:26,526 INFO L480 AbstractCegarLoop]: Abstraction has 224 states and 268 transitions. [2018-09-30 10:17:26,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-09-30 10:17:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 268 transitions. [2018-09-30 10:17:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-30 10:17:26,527 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:17:26,527 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 44, 1, 1, 1] [2018-09-30 10:17:26,528 INFO L423 AbstractCegarLoop]: === Iteration 46 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:17:26,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:17:26,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2065417248, now seen corresponding path program 44 times [2018-09-30 10:17:26,528 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:17:26,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:17:26,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:26,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:17:26,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:17:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:29,536 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:17:29,536 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:17:29,544 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:17:29,595 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:17:29,595 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:17:29,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:17:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4774 backedges. 0 proven. 4774 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:34,741 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:17:34,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 179 [2018-09-30 10:17:34,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-09-30 10:17:34,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-09-30 10:17:34,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8322, Invalid=23898, Unknown=0, NotChecked=0, Total=32220 [2018-09-30 10:17:34,743 INFO L87 Difference]: Start difference. First operand 224 states and 268 transitions. Second operand 180 states. [2018-09-30 10:17:35,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:17:35,745 INFO L93 Difference]: Finished difference Result 235 states and 281 transitions. [2018-09-30 10:17:35,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 10:17:35,745 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 223 [2018-09-30 10:17:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:17:35,746 INFO L225 Difference]: With dead ends: 235 [2018-09-30 10:17:35,746 INFO L226 Difference]: Without dead ends: 233 [2018-09-30 10:17:35,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18369 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=8322, Invalid=23898, Unknown=0, NotChecked=0, Total=32220 [2018-09-30 10:17:35,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-09-30 10:17:35,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 229. [2018-09-30 10:17:35,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-09-30 10:17:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 274 transitions. [2018-09-30 10:17:35,755 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 274 transitions. Word has length 223 [2018-09-30 10:17:35,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:17:35,755 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 274 transitions. [2018-09-30 10:17:35,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-09-30 10:17:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 274 transitions. [2018-09-30 10:17:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-09-30 10:17:35,757 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:17:35,757 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 45, 1, 1, 1] [2018-09-30 10:17:35,757 INFO L423 AbstractCegarLoop]: === Iteration 47 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:17:35,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:17:35,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1340001812, now seen corresponding path program 45 times [2018-09-30 10:17:35,758 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:17:35,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:17:35,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:35,759 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:17:35,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:17:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:38,922 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:17:38,922 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:17:38,930 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:17:39,010 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-30 10:17:39,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:17:39,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:17:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4995 backedges. 0 proven. 4995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:44,268 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:17:44,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 183 [2018-09-30 10:17:44,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-09-30 10:17:44,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-09-30 10:17:44,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8691, Invalid=24981, Unknown=0, NotChecked=0, Total=33672 [2018-09-30 10:17:44,271 INFO L87 Difference]: Start difference. First operand 229 states and 274 transitions. Second operand 184 states. [2018-09-30 10:17:45,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:17:45,199 INFO L93 Difference]: Finished difference Result 240 states and 287 transitions. [2018-09-30 10:17:45,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 10:17:45,199 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 228 [2018-09-30 10:17:45,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:17:45,200 INFO L225 Difference]: With dead ends: 240 [2018-09-30 10:17:45,200 INFO L226 Difference]: Without dead ends: 238 [2018-09-30 10:17:45,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19214 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=8691, Invalid=24981, Unknown=0, NotChecked=0, Total=33672 [2018-09-30 10:17:45,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-09-30 10:17:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2018-09-30 10:17:45,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-09-30 10:17:45,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 280 transitions. [2018-09-30 10:17:45,208 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 280 transitions. Word has length 228 [2018-09-30 10:17:45,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:17:45,209 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 280 transitions. [2018-09-30 10:17:45,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-09-30 10:17:45,209 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 280 transitions. [2018-09-30 10:17:45,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-09-30 10:17:45,210 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:17:45,210 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1] [2018-09-30 10:17:45,211 INFO L423 AbstractCegarLoop]: === Iteration 48 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:17:45,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:17:45,211 INFO L82 PathProgramCache]: Analyzing trace with hash 117973856, now seen corresponding path program 46 times [2018-09-30 10:17:45,211 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:17:45,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:17:45,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:45,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:17:45,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:17:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:48,516 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:17:48,516 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:17:48,523 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:17:48,595 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:17:48,596 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:17:48,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:17:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5221 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:54,420 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:17:54,420 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 187 [2018-09-30 10:17:54,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-09-30 10:17:54,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-09-30 10:17:54,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9068, Invalid=26088, Unknown=0, NotChecked=0, Total=35156 [2018-09-30 10:17:54,423 INFO L87 Difference]: Start difference. First operand 234 states and 280 transitions. Second operand 188 states. [2018-09-30 10:17:55,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:17:55,501 INFO L93 Difference]: Finished difference Result 245 states and 293 transitions. [2018-09-30 10:17:55,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 10:17:55,501 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 233 [2018-09-30 10:17:55,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:17:55,503 INFO L225 Difference]: With dead ends: 245 [2018-09-30 10:17:55,503 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 10:17:55,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20078 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=9068, Invalid=26088, Unknown=0, NotChecked=0, Total=35156 [2018-09-30 10:17:55,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 10:17:55,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2018-09-30 10:17:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-30 10:17:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2018-09-30 10:17:55,511 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 233 [2018-09-30 10:17:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:17:55,512 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2018-09-30 10:17:55,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-09-30 10:17:55,512 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2018-09-30 10:17:55,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-30 10:17:55,513 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:17:55,513 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 1, 1, 1] [2018-09-30 10:17:55,513 INFO L423 AbstractCegarLoop]: === Iteration 49 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:17:55,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:17:55,514 INFO L82 PathProgramCache]: Analyzing trace with hash 365034092, now seen corresponding path program 47 times [2018-09-30 10:17:55,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:17:55,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:17:55,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:55,515 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:17:55,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:17:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:17:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:17:58,950 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:17:58,950 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:17:58,959 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:17:59,059 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-30 10:17:59,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:17:59,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:18:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5452 backedges. 0 proven. 5452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:18:04,828 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:18:04,828 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2018-09-30 10:18:04,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-09-30 10:18:04,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-09-30 10:18:04,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9453, Invalid=27219, Unknown=0, NotChecked=0, Total=36672 [2018-09-30 10:18:04,830 INFO L87 Difference]: Start difference. First operand 239 states and 286 transitions. Second operand 192 states. [2018-09-30 10:18:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:18:05,954 INFO L93 Difference]: Finished difference Result 250 states and 299 transitions. [2018-09-30 10:18:05,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 10:18:05,954 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 238 [2018-09-30 10:18:05,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:18:05,956 INFO L225 Difference]: With dead ends: 250 [2018-09-30 10:18:05,956 INFO L226 Difference]: Without dead ends: 248 [2018-09-30 10:18:05,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20961 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=9453, Invalid=27219, Unknown=0, NotChecked=0, Total=36672 [2018-09-30 10:18:05,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-09-30 10:18:05,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2018-09-30 10:18:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-09-30 10:18:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 292 transitions. [2018-09-30 10:18:05,964 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 292 transitions. Word has length 238 [2018-09-30 10:18:05,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:18:05,965 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 292 transitions. [2018-09-30 10:18:05,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-09-30 10:18:05,965 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 292 transitions. [2018-09-30 10:18:05,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-30 10:18:05,966 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:18:05,966 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 48, 1, 1, 1] [2018-09-30 10:18:05,967 INFO L423 AbstractCegarLoop]: === Iteration 50 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:18:05,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:18:05,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1225829088, now seen corresponding path program 48 times [2018-09-30 10:18:05,967 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:18:05,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:18:05,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:18:05,968 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:18:05,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:18:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:18:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:18:09,437 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:18:09,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:18:09,444 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:18:09,542 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-30 10:18:09,542 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:18:09,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:18:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5688 backedges. 0 proven. 5688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:18:15,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:18:15,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 195 [2018-09-30 10:18:15,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-09-30 10:18:15,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-09-30 10:18:15,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9846, Invalid=28374, Unknown=0, NotChecked=0, Total=38220 [2018-09-30 10:18:15,548 INFO L87 Difference]: Start difference. First operand 244 states and 292 transitions. Second operand 196 states. [2018-09-30 10:18:16,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:18:16,669 INFO L93 Difference]: Finished difference Result 255 states and 305 transitions. [2018-09-30 10:18:16,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 10:18:16,670 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 243 [2018-09-30 10:18:16,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:18:16,671 INFO L225 Difference]: With dead ends: 255 [2018-09-30 10:18:16,671 INFO L226 Difference]: Without dead ends: 253 [2018-09-30 10:18:16,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21863 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=9846, Invalid=28374, Unknown=0, NotChecked=0, Total=38220 [2018-09-30 10:18:16,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-09-30 10:18:16,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-09-30 10:18:16,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-09-30 10:18:16,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2018-09-30 10:18:16,678 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 243 [2018-09-30 10:18:16,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:18:16,679 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2018-09-30 10:18:16,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-09-30 10:18:16,679 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2018-09-30 10:18:16,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-09-30 10:18:16,680 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:18:16,680 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 49, 1, 1, 1] [2018-09-30 10:18:16,680 INFO L423 AbstractCegarLoop]: === Iteration 51 === [GateControllerErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:18:16,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:18:16,681 INFO L82 PathProgramCache]: Analyzing trace with hash 291644140, now seen corresponding path program 49 times [2018-09-30 10:18:16,681 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:18:16,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:18:16,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:18:16,682 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:18:16,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:18:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:18:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:18:20,381 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:18:20,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:18:20,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:18:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:18:20,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:18:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5929 backedges. 0 proven. 5929 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:18:26,716 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:18:26,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 199 [2018-09-30 10:18:26,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-09-30 10:18:26,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-09-30 10:18:26,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10247, Invalid=29553, Unknown=0, NotChecked=0, Total=39800 [2018-09-30 10:18:26,720 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand 200 states. Received shutdown request... [2018-09-30 10:18:27,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 10:18:27,792 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 10:18:27,797 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 10:18:27,797 INFO L202 PluginConnector]: Adding new model GateController.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 10:18:27 BoogieIcfgContainer [2018-09-30 10:18:27,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 10:18:27,798 INFO L168 Benchmark]: Toolchain (without parser) took 238945.64 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 100.1 MB). Free memory was 1.4 GB in the beginning and 998.9 MB in the end (delta: 420.0 MB). Peak memory consumption was 520.2 MB. Max. memory is 7.1 GB. [2018-09-30 10:18:27,799 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 10:18:27,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.19 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 10:18:27,800 INFO L168 Benchmark]: Boogie Preprocessor took 33.83 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 10:18:27,800 INFO L168 Benchmark]: RCFGBuilder took 392.82 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 10:18:27,801 INFO L168 Benchmark]: TraceAbstraction took 238464.92 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 100.1 MB). Free memory was 1.4 GB in the beginning and 998.9 MB in the end (delta: 398.9 MB). Peak memory consumption was 499.0 MB. Max. memory is 7.1 GB. [2018-09-30 10:18:27,803 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 0.19 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 47.19 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 33.83 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 392.82 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 238464.92 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 100.1 MB). Free memory was 1.4 GB in the beginning and 998.9 MB in the end (delta: 398.9 MB). Peak memory consumption was 499.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 44). Cancelled while BasicCegarLoop was constructing difference of abstraction (249states) and FLOYD_HOARE automaton (currently 95 states, 200 states before enhancement), while ReachableStatesComputation was computing reachable states (231 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 238.3s OverallTime, 51 OverallIterations, 49 TraceHistogramMax, 27.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 513 SDtfs, 17349 SDslu, 15000 SDs, 0 SdLazy, 15262 SolverSat, 3182 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8775 GetRequests, 3775 SyntacticMatches, 0 SemanticMatches, 5000 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383376 ImplicationChecksByTransitivity, 195.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 50 MinimizatonAttempts, 197 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 205.0s InterpolantComputationTime, 12555 NumberOfCodeBlocks, 12555 NumberOfCodeBlocksAsserted, 732 NumberOfCheckSat, 12455 ConstructedInterpolants, 6174 QuantifiedInterpolants, 20383669 SizeOfPredicates, 1372 NumberOfNonLiveVariables, 10584 ConjunctsInSsa, 2646 ConjunctsInUnsatCore, 100 InterpolantComputations, 2 PerfectInterpolantSequences, 1/198451 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/GateController.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_10-18-27-813.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/GateController.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_10-18-27-813.csv Completed graceful shutdown