java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:07:23,145 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:07:23,147 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:07:23,163 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:07:23,163 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:07:23,164 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:07:23,165 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:07:23,168 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:07:23,170 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:07:23,172 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:07:23,174 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-02 12:07:23,214 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-02 12:07:23,232 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:07:23,232 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:07:23,233 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:07:23,233 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:07:23,234 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:07:23,234 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:07:23,234 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:07:23,235 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:07:23,235 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:07:23,235 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:07:23,235 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:07:23,235 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:07:23,236 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:07:23,236 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:07:23,236 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:07:23,236 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:07:23,236 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:07:23,237 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:07:23,237 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:07:23,237 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:07:23,237 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:07:23,237 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:07:23,238 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:07:23,238 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:07:23,238 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:07:23,238 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:07:23,238 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:07:23,239 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:07:23,239 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:07:23,239 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:07:23,239 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:07:23,303 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:07:23,316 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:07:23,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:07:23,324 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:07:23,324 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:07:23,325 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-02 12:07:23,326 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-10-02 12:07:23,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:07:23,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:07:23,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:07:23,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:07:23,396 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:07:23,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:23" (1/1) ... [2018-10-02 12:07:23,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:23" (1/1) ... [2018-10-02 12:07:23,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:07:23,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:07:23,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:07:23,438 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:07:23,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:23" (1/1) ... [2018-10-02 12:07:23,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:23" (1/1) ... [2018-10-02 12:07:23,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:23" (1/1) ... [2018-10-02 12:07:23,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:23" (1/1) ... [2018-10-02 12:07:23,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:23" (1/1) ... [2018-10-02 12:07:23,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:23" (1/1) ... [2018-10-02 12:07:23,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:23" (1/1) ... [2018-10-02 12:07:23,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:07:23,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:07:23,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:07:23,462 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:07:23,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:07:23,525 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-02 12:07:23,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-02 12:07:23,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-02 12:07:23,741 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-02 12:07:23,742 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:07:23 BoogieIcfgContainer [2018-10-02 12:07:23,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:07:23,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:07:23,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:07:23,746 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:07:23,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:07:23" (1/2) ... [2018-10-02 12:07:23,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d737d61 and model type fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:07:23, skipping insertion in model container [2018-10-02 12:07:23,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:07:23" (2/2) ... [2018-10-02 12:07:23,750 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-02 12:07:23,758 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:07:23,766 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:07:23,818 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:07:23,819 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:07:23,819 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:07:23,819 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:07:23,819 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:07:23,820 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:07:23,820 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:07:23,820 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:07:23,820 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:07:23,835 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-02 12:07:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 12:07:23,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:23,842 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-02 12:07:23,843 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:23,850 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:23,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1807861163, now seen corresponding path program 1 times [2018-10-02 12:07:23,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:23,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:23,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:23,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:23,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:24,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:07:24,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:07:24,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:07:24,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:07:24,043 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:24,045 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-02 12:07:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:24,216 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2018-10-02 12:07:24,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:07:24,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-02 12:07:24,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:24,232 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:07:24,232 INFO L226 Difference]: Without dead ends: 10 [2018-10-02 12:07:24,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:07:24,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-02 12:07:24,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-02 12:07:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-02 12:07:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-10-02 12:07:24,270 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2018-10-02 12:07:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:24,271 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-10-02 12:07:24,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:07:24,271 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-10-02 12:07:24,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:07:24,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:24,272 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-10-02 12:07:24,272 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:24,273 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:24,273 INFO L82 PathProgramCache]: Analyzing trace with hash 89245487, now seen corresponding path program 1 times [2018-10-02 12:07:24,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:24,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:24,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:24,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:24,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:24,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:24,352 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 [2018-10-02 12:07:24,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:24,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:24,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:24,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-02 12:07:24,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:07:24,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:07:24,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:24,461 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2018-10-02 12:07:24,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:24,618 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-10-02 12:07:24,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:07:24,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-02 12:07:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:24,621 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:07:24,621 INFO L226 Difference]: Without dead ends: 12 [2018-10-02 12:07:24,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:07:24,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-02 12:07:24,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-02 12:07:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-02 12:07:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-10-02 12:07:24,628 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2018-10-02 12:07:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:24,629 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-10-02 12:07:24,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:07:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-10-02 12:07:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:07:24,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:24,631 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-10-02 12:07:24,631 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:24,631 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:24,631 INFO L82 PathProgramCache]: Analyzing trace with hash 2061989811, now seen corresponding path program 2 times [2018-10-02 12:07:24,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:24,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:24,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:24,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:24,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:07:24,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:07:24,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-02 12:07:24,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:07:24,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:07:24,751 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:24,751 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2018-10-02 12:07:25,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:25,153 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-10-02 12:07:25,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:07:25,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-02 12:07:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:25,157 INFO L225 Difference]: With dead ends: 32 [2018-10-02 12:07:25,157 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:07:25,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:07:25,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:07:25,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2018-10-02 12:07:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-02 12:07:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-10-02 12:07:25,164 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2018-10-02 12:07:25,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:25,164 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-10-02 12:07:25,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:07:25,164 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-10-02 12:07:25,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:07:25,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:25,165 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-10-02 12:07:25,166 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:25,166 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:25,166 INFO L82 PathProgramCache]: Analyzing trace with hash 2062049393, now seen corresponding path program 1 times [2018-10-02 12:07:25,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:25,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:25,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,168 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:25,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-02 12:07:25,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:07:25,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-02 12:07:25,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:07:25,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:07:25,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:25,247 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2018-10-02 12:07:25,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:25,425 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2018-10-02 12:07:25,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:07:25,426 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-10-02 12:07:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:25,427 INFO L225 Difference]: With dead ends: 26 [2018-10-02 12:07:25,428 INFO L226 Difference]: Without dead ends: 24 [2018-10-02 12:07:25,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:07:25,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-02 12:07:25,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-10-02 12:07:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-02 12:07:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-02 12:07:25,435 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2018-10-02 12:07:25,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:25,435 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-02 12:07:25,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:07:25,436 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-02 12:07:25,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-02 12:07:25,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:25,437 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2018-10-02 12:07:25,437 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:25,437 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:25,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1980186676, now seen corresponding path program 1 times [2018-10-02 12:07:25,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:25,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:25,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:25,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:25,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:25,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:07:25,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:25,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:25,601 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:25,630 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:25,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 12:07:25,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:07:25,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:07:25,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:25,632 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-10-02 12:07:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:25,727 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-10-02 12:07:25,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:07:25,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-10-02 12:07:25,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:25,730 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:07:25,730 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:07:25,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:07:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:07:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-02 12:07:25,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-02 12:07:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-02 12:07:25,737 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-10-02 12:07:25,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:25,737 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-02 12:07:25,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:07:25,737 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-02 12:07:25,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-02 12:07:25,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:25,738 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:25,739 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:25,739 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:25,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1317950664, now seen corresponding path program 2 times [2018-10-02 12:07:25,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:25,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:25,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:25,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:26,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:26,089 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 [2018-10-02 12:07:26,097 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:26,117 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:26,118 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:26,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:26,184 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:26,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 12:07:26,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:07:26,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:07:26,185 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:26,186 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2018-10-02 12:07:26,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:26,612 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-10-02 12:07:26,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:07:26,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-10-02 12:07:26,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:26,613 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:07:26,613 INFO L226 Difference]: Without dead ends: 25 [2018-10-02 12:07:26,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:07:26,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-02 12:07:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-02 12:07:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-02 12:07:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-02 12:07:26,619 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2018-10-02 12:07:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:26,619 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-02 12:07:26,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:07:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-02 12:07:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-02 12:07:26,620 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:26,620 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:26,621 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:26,621 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:26,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1142069956, now seen corresponding path program 3 times [2018-10-02 12:07:26,621 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:26,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:26,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:26,623 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:26,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:26,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:26,906 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:07:26,918 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:26,939 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-02 12:07:26,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:26,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:27,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:27,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 12:07:27,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:07:27,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:07:27,020 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:27,021 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 7 states. [2018-10-02 12:07:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:27,167 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-10-02 12:07:27,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:07:27,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-10-02 12:07:27,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:27,176 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:07:27,176 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:07:27,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:07:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:07:27,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-02 12:07:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-02 12:07:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-10-02 12:07:27,181 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2018-10-02 12:07:27,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:27,182 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-10-02 12:07:27,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:07:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-10-02 12:07:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-02 12:07:27,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:27,183 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:27,183 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:27,183 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:27,184 INFO L82 PathProgramCache]: Analyzing trace with hash -375565888, now seen corresponding path program 4 times [2018-10-02 12:07:27,184 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:27,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:27,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:27,185 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:27,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:27,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:27,308 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 [2018-10-02 12:07:27,320 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:27,356 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:27,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:27,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:27,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:27,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 12:07:27,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:07:27,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:07:27,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:27,449 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-10-02 12:07:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:27,599 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-10-02 12:07:27,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:07:27,602 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-10-02 12:07:27,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:27,602 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:07:27,603 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:07:27,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:07:27,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:07:27,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-02 12:07:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-02 12:07:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-10-02 12:07:27,608 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2018-10-02 12:07:27,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:27,609 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-10-02 12:07:27,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:07:27,609 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-10-02 12:07:27,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-02 12:07:27,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:27,610 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:27,611 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:27,611 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:27,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1465268668, now seen corresponding path program 5 times [2018-10-02 12:07:27,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:27,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:27,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:27,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:27,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:27,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:27,738 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 [2018-10-02 12:07:27,750 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:27,800 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:07:27,800 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:27,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:27,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:27,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 12:07:27,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:07:27,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:07:27,882 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:27,882 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 9 states. [2018-10-02 12:07:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:28,044 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-10-02 12:07:28,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:07:28,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-10-02 12:07:28,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:28,048 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:07:28,048 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:07:28,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:07:28,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:07:28,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-02 12:07:28,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-02 12:07:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-10-02 12:07:28,054 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2018-10-02 12:07:28,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:28,054 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-10-02 12:07:28,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:07:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-10-02 12:07:28,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-02 12:07:28,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:28,056 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:28,056 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:28,056 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:28,056 INFO L82 PathProgramCache]: Analyzing trace with hash 980751032, now seen corresponding path program 6 times [2018-10-02 12:07:28,056 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:28,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:28,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:28,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:28,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:28,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:28,166 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:07:28,174 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:28,301 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-02 12:07:28,302 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:28,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:28,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:28,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 12:07:28,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:07:28,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:07:28,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:28,531 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 10 states. [2018-10-02 12:07:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:28,603 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-10-02 12:07:28,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:07:28,605 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-10-02 12:07:28,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:28,606 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:07:28,606 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:07:28,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:07:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:07:28,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-02 12:07:28,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-02 12:07:28,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-10-02 12:07:28,612 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2018-10-02 12:07:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:28,613 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-10-02 12:07:28,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:07:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-10-02 12:07:28,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-02 12:07:28,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:28,614 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:28,614 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:28,614 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:28,614 INFO L82 PathProgramCache]: Analyzing trace with hash -784229196, now seen corresponding path program 7 times [2018-10-02 12:07:28,614 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:28,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:28,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:28,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:28,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:28,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:28,731 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 [2018-10-02 12:07:28,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:28,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:28,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:28,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 12:07:28,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:07:28,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:07:28,856 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:28,856 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2018-10-02 12:07:29,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:29,004 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-10-02 12:07:29,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:07:29,004 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2018-10-02 12:07:29,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:29,005 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:07:29,005 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:07:29,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:07:29,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:07:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-02 12:07:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-02 12:07:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-10-02 12:07:29,011 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 32 [2018-10-02 12:07:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:29,012 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-10-02 12:07:29,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:07:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-10-02 12:07:29,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-02 12:07:29,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:29,013 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:29,013 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:29,013 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:29,014 INFO L82 PathProgramCache]: Analyzing trace with hash -418146384, now seen corresponding path program 8 times [2018-10-02 12:07:29,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:29,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:29,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:29,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:29,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:29,419 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:29,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:29,420 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 [2018-10-02 12:07:29,431 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:29,458 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:29,458 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:29,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:29,541 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:29,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-02 12:07:29,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:07:29,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:07:29,542 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:29,542 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 12 states. [2018-10-02 12:07:29,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:29,695 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-10-02 12:07:29,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:07:29,697 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-10-02 12:07:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:29,698 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:07:29,698 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:07:29,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:07:29,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:07:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-02 12:07:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-02 12:07:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-10-02 12:07:29,704 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2018-10-02 12:07:29,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:29,705 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-10-02 12:07:29,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:07:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-10-02 12:07:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-02 12:07:29,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:29,706 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:29,706 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:29,707 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:29,707 INFO L82 PathProgramCache]: Analyzing trace with hash -799882324, now seen corresponding path program 9 times [2018-10-02 12:07:29,707 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:29,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:29,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:29,708 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:29,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:29,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:29,859 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 [2018-10-02 12:07:29,866 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:29,912 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-02 12:07:29,912 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:29,915 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:30,098 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:30,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-02 12:07:30,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-02 12:07:30,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-02 12:07:30,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:30,099 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 13 states. [2018-10-02 12:07:30,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:30,412 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-10-02 12:07:30,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-02 12:07:30,413 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-10-02 12:07:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:30,414 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:07:30,414 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:07:30,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:07:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:07:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-02 12:07:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-02 12:07:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-10-02 12:07:30,419 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2018-10-02 12:07:30,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:30,420 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-10-02 12:07:30,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-02 12:07:30,420 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-10-02 12:07:30,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-02 12:07:30,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:30,421 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:30,421 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:30,422 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:30,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1719066792, now seen corresponding path program 10 times [2018-10-02 12:07:30,422 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:30,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:30,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:30,423 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:30,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:30,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:30,572 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 [2018-10-02 12:07:30,581 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:30,605 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:30,605 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:30,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:30,808 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:30,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-02 12:07:30,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:07:30,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:07:30,808 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:30,809 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 14 states. [2018-10-02 12:07:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:30,916 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-10-02 12:07:30,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:07:30,917 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-10-02 12:07:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:30,918 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:07:30,918 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:07:30,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:07:30,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:07:30,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-02 12:07:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-02 12:07:30,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-02 12:07:30,925 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2018-10-02 12:07:30,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:30,926 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-02 12:07:30,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:07:30,926 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-02 12:07:30,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-02 12:07:30,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:30,927 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:30,927 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:30,927 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:30,928 INFO L82 PathProgramCache]: Analyzing trace with hash 67612324, now seen corresponding path program 11 times [2018-10-02 12:07:30,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:30,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:30,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:30,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:30,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:31,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:31,524 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 [2018-10-02 12:07:31,540 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:31,640 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-02 12:07:31,641 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:31,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:31,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:31,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-02 12:07:31,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-02 12:07:31,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-02 12:07:31,763 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:31,763 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2018-10-02 12:07:31,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:31,844 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2018-10-02 12:07:31,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-02 12:07:31,844 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-10-02 12:07:31,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:31,845 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:07:31,845 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:07:31,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime [2018-10-02 12:07:31,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:07:31,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-02 12:07:31,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-02 12:07:31,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-10-02 12:07:31,852 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2018-10-02 12:07:31,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:31,852 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-10-02 12:07:31,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-02 12:07:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-10-02 12:07:31,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-02 12:07:31,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:31,853 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:31,854 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:31,854 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:31,854 INFO L82 PathProgramCache]: Analyzing trace with hash -2137199200, now seen corresponding path program 12 times [2018-10-02 12:07:31,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:31,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:31,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:31,855 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:31,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:32,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:32,093 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 [2018-10-02 12:07:32,101 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:32,156 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-10-02 12:07:32,156 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:32,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:32,417 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:32,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-02 12:07:32,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:07:32,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:07:32,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:32,418 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 16 states. [2018-10-02 12:07:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:32,802 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-10-02 12:07:32,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-02 12:07:32,803 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-10-02 12:07:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:32,804 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:07:32,804 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:07:32,804 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:07:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:07:32,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-02 12:07:32,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-02 12:07:32,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-10-02 12:07:32,809 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2018-10-02 12:07:32,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:32,809 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-10-02 12:07:32,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:07:32,810 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-10-02 12:07:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-02 12:07:32,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:32,810 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:32,811 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:32,811 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:32,811 INFO L82 PathProgramCache]: Analyzing trace with hash 752770460, now seen corresponding path program 13 times [2018-10-02 12:07:32,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:32,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:32,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:32,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:32,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:33,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:33,562 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:07:33,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:33,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:33,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:33,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-02 12:07:33,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-02 12:07:33,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-02 12:07:33,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:33,805 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 17 states. [2018-10-02 12:07:33,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:33,926 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-10-02 12:07:33,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:07:33,927 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2018-10-02 12:07:33,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:33,927 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:07:33,928 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:07:33,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime [2018-10-02 12:07:33,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:07:33,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-02 12:07:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-02 12:07:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-10-02 12:07:33,935 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-10-02 12:07:33,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:33,936 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-10-02 12:07:33,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-02 12:07:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-10-02 12:07:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-02 12:07:33,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:33,937 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:33,937 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:33,937 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:33,937 INFO L82 PathProgramCache]: Analyzing trace with hash -830226792, now seen corresponding path program 14 times [2018-10-02 12:07:33,938 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:33,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:33,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:33,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:33,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:34,154 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:34,154 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 [2018-10-02 12:07:34,168 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:34,195 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:34,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:34,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:34,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:34,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-02 12:07:34,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:07:34,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:07:34,306 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:34,306 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 18 states. [2018-10-02 12:07:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:34,479 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-10-02 12:07:34,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-02 12:07:34,479 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2018-10-02 12:07:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:34,480 INFO L225 Difference]: With dead ends: 63 [2018-10-02 12:07:34,480 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:07:34,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:07:34,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:07:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-02 12:07:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-02 12:07:34,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-10-02 12:07:34,486 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2018-10-02 12:07:34,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:34,486 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-10-02 12:07:34,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:07:34,487 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-10-02 12:07:34,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-02 12:07:34,487 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:34,487 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:34,488 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:34,488 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:34,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1672163180, now seen corresponding path program 15 times [2018-10-02 12:07:34,488 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:34,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:34,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:34,489 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:34,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:34,818 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:34,818 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:07:34,826 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:34,896 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2018-10-02 12:07:34,896 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:34,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:35,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:35,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-02 12:07:35,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-02 12:07:35,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-02 12:07:35,366 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:35,366 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 19 states. [2018-10-02 12:07:35,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:35,654 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2018-10-02 12:07:35,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-02 12:07:35,654 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2018-10-02 12:07:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:35,655 INFO L225 Difference]: With dead ends: 65 [2018-10-02 12:07:35,655 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:07:35,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.1s impTime [2018-10-02 12:07:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:07:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-02 12:07:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-02 12:07:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-10-02 12:07:35,662 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 48 [2018-10-02 12:07:35,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:35,662 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-10-02 12:07:35,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-02 12:07:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-10-02 12:07:35,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-02 12:07:35,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:35,663 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:35,663 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:35,664 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:35,664 INFO L82 PathProgramCache]: Analyzing trace with hash 975786896, now seen corresponding path program 16 times [2018-10-02 12:07:35,664 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:35,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:35,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:35,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:35,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:35,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:35,949 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 [2018-10-02 12:07:35,958 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:35,989 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:35,989 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:35,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:36,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:36,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-02 12:07:36,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:07:36,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:07:36,091 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:36,091 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 20 states. [2018-10-02 12:07:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:36,209 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-10-02 12:07:36,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:07:36,209 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2018-10-02 12:07:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:36,210 INFO L225 Difference]: With dead ends: 67 [2018-10-02 12:07:36,210 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:07:36,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:07:36,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:07:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-02 12:07:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-02 12:07:36,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-10-02 12:07:36,216 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2018-10-02 12:07:36,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:36,216 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-10-02 12:07:36,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:07:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-10-02 12:07:36,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-02 12:07:36,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:36,217 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:36,218 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:36,218 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:36,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1259796596, now seen corresponding path program 17 times [2018-10-02 12:07:36,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:36,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:36,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:36,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:36,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:36,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:36,574 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 [2018-10-02 12:07:36,581 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:36,627 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-02 12:07:36,628 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:36,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:36,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:36,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-02 12:07:36,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-02 12:07:36,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-02 12:07:36,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:36,784 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 21 states. [2018-10-02 12:07:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:36,982 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-10-02 12:07:36,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-02 12:07:36,983 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2018-10-02 12:07:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:36,984 INFO L225 Difference]: With dead ends: 69 [2018-10-02 12:07:36,984 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:07:36,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:07:36,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:07:36,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-02 12:07:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-02 12:07:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-10-02 12:07:36,992 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 52 [2018-10-02 12:07:36,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:36,993 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-10-02 12:07:36,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-02 12:07:36,993 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-10-02 12:07:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-02 12:07:36,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:36,994 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:36,994 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:36,994 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:36,994 INFO L82 PathProgramCache]: Analyzing trace with hash 2123082888, now seen corresponding path program 18 times [2018-10-02 12:07:36,995 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:36,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:36,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:36,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:36,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:37,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:37,273 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 [2018-10-02 12:07:37,282 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:37,389 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-10-02 12:07:37,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:37,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:37,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:37,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-02 12:07:37,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:07:37,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:07:37,555 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:37,556 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 22 states. [2018-10-02 12:07:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:37,919 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-10-02 12:07:37,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:07:37,920 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2018-10-02 12:07:37,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:37,921 INFO L225 Difference]: With dead ends: 71 [2018-10-02 12:07:37,921 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:07:37,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:07:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:07:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-02 12:07:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-02 12:07:37,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-10-02 12:07:37,926 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 54 [2018-10-02 12:07:37,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:37,926 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-10-02 12:07:37,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:07:37,926 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-10-02 12:07:37,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-02 12:07:37,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:37,927 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:37,928 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:37,928 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:37,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1780023940, now seen corresponding path program 19 times [2018-10-02 12:07:37,928 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:37,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:37,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:37,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:37,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:38,470 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:38,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:38,470 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:07:38,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:38,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:38,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:38,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-02 12:07:38,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:07:38,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:07:38,613 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:38,613 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 23 states. [2018-10-02 12:07:38,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:38,810 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2018-10-02 12:07:38,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:07:38,814 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2018-10-02 12:07:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:38,814 INFO L225 Difference]: With dead ends: 73 [2018-10-02 12:07:38,814 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:07:38,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:07:38,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:07:38,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-02 12:07:38,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-02 12:07:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-10-02 12:07:38,819 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2018-10-02 12:07:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:38,819 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-10-02 12:07:38,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:07:38,819 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-10-02 12:07:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-02 12:07:38,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:38,820 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:38,820 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:38,820 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:38,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1482110592, now seen corresponding path program 20 times [2018-10-02 12:07:38,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:38,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:38,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:38,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:38,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:39,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:39,234 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 [2018-10-02 12:07:39,243 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:39,288 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:39,288 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:39,290 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:39,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:39,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-02 12:07:39,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-02 12:07:39,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-02 12:07:39,424 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:39,424 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 24 states. [2018-10-02 12:07:39,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:39,539 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-10-02 12:07:39,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-02 12:07:39,541 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2018-10-02 12:07:39,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:39,542 INFO L225 Difference]: With dead ends: 75 [2018-10-02 12:07:39,542 INFO L226 Difference]: Without dead ends: 61 [2018-10-02 12:07:39,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:07:39,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-02 12:07:39,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-02 12:07:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-02 12:07:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-10-02 12:07:39,546 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 58 [2018-10-02 12:07:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:39,546 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-10-02 12:07:39,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-02 12:07:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-10-02 12:07:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-02 12:07:39,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:39,547 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:39,548 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:39,548 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:39,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1067269764, now seen corresponding path program 21 times [2018-10-02 12:07:39,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:39,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:39,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:39,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:39,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:39,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:39,951 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:07:39,958 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:40,008 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-10-02 12:07:40,009 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:40,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:40,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:40,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-02 12:07:40,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-02 12:07:40,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-02 12:07:40,145 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:40,145 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 25 states. [2018-10-02 12:07:40,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:40,258 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2018-10-02 12:07:40,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-02 12:07:40,259 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2018-10-02 12:07:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:40,259 INFO L225 Difference]: With dead ends: 77 [2018-10-02 12:07:40,260 INFO L226 Difference]: Without dead ends: 63 [2018-10-02 12:07:40,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:07:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-02 12:07:40,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-02 12:07:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-02 12:07:40,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2018-10-02 12:07:40,263 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 60 [2018-10-02 12:07:40,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:40,263 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2018-10-02 12:07:40,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-02 12:07:40,263 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2018-10-02 12:07:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-02 12:07:40,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:40,264 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:40,264 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:40,264 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:40,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1837192584, now seen corresponding path program 22 times [2018-10-02 12:07:40,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:40,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:40,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:40,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:40,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:40,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:40,767 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 [2018-10-02 12:07:40,775 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:40,815 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:40,816 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:40,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:40,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:40,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-02 12:07:40,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-02 12:07:40,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-02 12:07:40,926 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:40,927 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 26 states. [2018-10-02 12:07:41,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:41,133 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-10-02 12:07:41,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-02 12:07:41,133 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-10-02 12:07:41,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:41,134 INFO L225 Difference]: With dead ends: 79 [2018-10-02 12:07:41,134 INFO L226 Difference]: Without dead ends: 65 [2018-10-02 12:07:41,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:07:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-02 12:07:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-02 12:07:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-02 12:07:41,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-10-02 12:07:41,138 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2018-10-02 12:07:41,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:41,138 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-10-02 12:07:41,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-02 12:07:41,138 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-10-02 12:07:41,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-02 12:07:41,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:41,139 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:41,139 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:41,139 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:41,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1296319604, now seen corresponding path program 23 times [2018-10-02 12:07:41,140 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:41,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:41,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:41,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:41,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:41,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:41,500 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 [2018-10-02 12:07:41,508 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:41,580 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-02 12:07:41,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:41,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:41,752 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:41,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-02 12:07:41,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-02 12:07:41,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-02 12:07:41,753 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:41,753 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 27 states. [2018-10-02 12:07:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:42,083 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2018-10-02 12:07:42,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-02 12:07:42,084 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2018-10-02 12:07:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:42,085 INFO L225 Difference]: With dead ends: 81 [2018-10-02 12:07:42,085 INFO L226 Difference]: Without dead ends: 67 [2018-10-02 12:07:42,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:07:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-02 12:07:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-02 12:07:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-02 12:07:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-10-02 12:07:42,089 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 64 [2018-10-02 12:07:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:42,089 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-10-02 12:07:42,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-02 12:07:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-10-02 12:07:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-02 12:07:42,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:42,090 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:42,090 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:42,090 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:42,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1829457776, now seen corresponding path program 24 times [2018-10-02 12:07:42,091 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:42,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:42,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:42,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:42,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:42,484 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:42,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:42,484 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 [2018-10-02 12:07:42,493 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:42,553 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-10-02 12:07:42,553 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:42,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:42,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:42,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-02 12:07:42,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-02 12:07:42,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-02 12:07:42,768 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:42,768 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 28 states. [2018-10-02 12:07:43,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:43,153 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2018-10-02 12:07:43,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-02 12:07:43,154 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2018-10-02 12:07:43,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:43,154 INFO L225 Difference]: With dead ends: 83 [2018-10-02 12:07:43,154 INFO L226 Difference]: Without dead ends: 69 [2018-10-02 12:07:43,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:07:43,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-02 12:07:43,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-02 12:07:43,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-02 12:07:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2018-10-02 12:07:43,159 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 66 [2018-10-02 12:07:43,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:43,159 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2018-10-02 12:07:43,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-02 12:07:43,160 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2018-10-02 12:07:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-02 12:07:43,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:43,160 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:43,161 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:43,161 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:43,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1220834452, now seen corresponding path program 25 times [2018-10-02 12:07:43,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:43,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:43,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:43,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:43,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:43,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:43,625 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 [2018-10-02 12:07:43,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:43,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:43,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:43,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-02 12:07:43,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-02 12:07:43,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-02 12:07:43,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:43,811 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 29 states. [2018-10-02 12:07:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:44,028 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-10-02 12:07:44,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:07:44,029 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2018-10-02 12:07:44,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:44,030 INFO L225 Difference]: With dead ends: 85 [2018-10-02 12:07:44,030 INFO L226 Difference]: Without dead ends: 71 [2018-10-02 12:07:44,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:07:44,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-02 12:07:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-02 12:07:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-02 12:07:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-10-02 12:07:44,035 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 68 [2018-10-02 12:07:44,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:44,036 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-10-02 12:07:44,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-02 12:07:44,036 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-10-02 12:07:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-02 12:07:44,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:44,036 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:44,037 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:44,037 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:44,037 INFO L82 PathProgramCache]: Analyzing trace with hash 910997608, now seen corresponding path program 26 times [2018-10-02 12:07:44,037 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:44,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:44,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:44,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:44,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:44,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:44,437 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:07:44,453 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:44,501 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:44,501 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:44,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:44,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:44,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-02 12:07:44,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-02 12:07:44,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-02 12:07:44,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:44,692 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 30 states. [2018-10-02 12:07:44,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:44,843 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2018-10-02 12:07:44,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-02 12:07:44,844 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2018-10-02 12:07:44,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:44,845 INFO L225 Difference]: With dead ends: 87 [2018-10-02 12:07:44,845 INFO L226 Difference]: Without dead ends: 73 [2018-10-02 12:07:44,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:07:44,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-02 12:07:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-02 12:07:44,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-02 12:07:44,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-10-02 12:07:44,850 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 70 [2018-10-02 12:07:44,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:44,850 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-10-02 12:07:44,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-02 12:07:44,850 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-10-02 12:07:44,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-02 12:07:44,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:44,851 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:44,851 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:44,851 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:44,852 INFO L82 PathProgramCache]: Analyzing trace with hash 902207076, now seen corresponding path program 27 times [2018-10-02 12:07:44,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:44,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:44,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:44,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:44,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:45,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:45,806 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:07:45,815 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:45,877 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-10-02 12:07:45,877 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:45,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:46,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:46,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-02 12:07:46,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-02 12:07:46,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-02 12:07:46,020 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:46,020 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 31 states. [2018-10-02 12:07:46,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:46,214 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2018-10-02 12:07:46,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-02 12:07:46,217 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2018-10-02 12:07:46,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:46,218 INFO L225 Difference]: With dead ends: 89 [2018-10-02 12:07:46,218 INFO L226 Difference]: Without dead ends: 75 [2018-10-02 12:07:46,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime [2018-10-02 12:07:46,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-02 12:07:46,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-02 12:07:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-02 12:07:46,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-10-02 12:07:46,223 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 72 [2018-10-02 12:07:46,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:46,224 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-10-02 12:07:46,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-02 12:07:46,224 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-10-02 12:07:46,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-02 12:07:46,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:46,225 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:46,225 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:46,225 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:46,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1044440416, now seen corresponding path program 28 times [2018-10-02 12:07:46,225 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:46,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:46,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:46,226 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:46,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:46,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:46,693 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 [2018-10-02 12:07:46,702 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:46,750 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:46,750 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:46,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:46,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:46,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-02 12:07:46,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:07:46,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:07:46,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:46,961 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 32 states. [2018-10-02 12:07:47,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:47,282 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2018-10-02 12:07:47,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:07:47,282 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2018-10-02 12:07:47,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:47,283 INFO L225 Difference]: With dead ends: 91 [2018-10-02 12:07:47,283 INFO L226 Difference]: Without dead ends: 77 [2018-10-02 12:07:47,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:07:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-02 12:07:47,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-02 12:07:47,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-02 12:07:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2018-10-02 12:07:47,290 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2018-10-02 12:07:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:47,290 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2018-10-02 12:07:47,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:07:47,291 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2018-10-02 12:07:47,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-02 12:07:47,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:47,291 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:47,292 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:47,292 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:47,292 INFO L82 PathProgramCache]: Analyzing trace with hash 291726684, now seen corresponding path program 29 times [2018-10-02 12:07:47,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:47,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:47,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:47,293 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:47,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:48,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:48,395 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:07:48,403 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:48,469 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-02 12:07:48,470 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:48,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:48,613 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:48,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-02 12:07:48,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-02 12:07:48,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-02 12:07:48,614 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:48,614 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 33 states. [2018-10-02 12:07:48,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:48,892 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2018-10-02 12:07:48,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-02 12:07:48,893 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2018-10-02 12:07:48,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:48,893 INFO L225 Difference]: With dead ends: 93 [2018-10-02 12:07:48,894 INFO L226 Difference]: Without dead ends: 79 [2018-10-02 12:07:48,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime [2018-10-02 12:07:48,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-02 12:07:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-02 12:07:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-02 12:07:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-10-02 12:07:48,899 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 76 [2018-10-02 12:07:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:48,899 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-10-02 12:07:48,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-02 12:07:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-10-02 12:07:48,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-02 12:07:48,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:48,899 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:48,900 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:48,900 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:48,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1511664040, now seen corresponding path program 30 times [2018-10-02 12:07:48,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:48,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:48,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:48,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:48,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:50,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:50,088 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 [2018-10-02 12:07:50,096 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:50,168 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-10-02 12:07:50,168 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:50,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:50,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:50,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-02 12:07:50,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-02 12:07:50,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-02 12:07:50,425 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:50,425 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 34 states. [2018-10-02 12:07:50,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:50,727 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2018-10-02 12:07:50,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-02 12:07:50,728 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-10-02 12:07:50,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:50,729 INFO L225 Difference]: With dead ends: 95 [2018-10-02 12:07:50,729 INFO L226 Difference]: Without dead ends: 81 [2018-10-02 12:07:50,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime [2018-10-02 12:07:50,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-02 12:07:50,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-02 12:07:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-02 12:07:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-10-02 12:07:50,735 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 78 [2018-10-02 12:07:50,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:50,735 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-10-02 12:07:50,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-02 12:07:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-10-02 12:07:50,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-02 12:07:50,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:50,736 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:50,736 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:50,736 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:50,736 INFO L82 PathProgramCache]: Analyzing trace with hash 596637780, now seen corresponding path program 31 times [2018-10-02 12:07:50,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:50,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:50,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:50,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:50,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:51,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:51,345 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 [2018-10-02 12:07:51,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:51,405 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:51,555 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:51,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-02 12:07:51,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-02 12:07:51,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-02 12:07:51,556 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:51,556 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 35 states. [2018-10-02 12:07:51,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:51,869 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2018-10-02 12:07:51,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:07:51,877 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2018-10-02 12:07:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:51,878 INFO L225 Difference]: With dead ends: 97 [2018-10-02 12:07:51,878 INFO L226 Difference]: Without dead ends: 83 [2018-10-02 12:07:51,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime [2018-10-02 12:07:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-02 12:07:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-02 12:07:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-02 12:07:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-10-02 12:07:51,882 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2018-10-02 12:07:51,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:51,883 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-10-02 12:07:51,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-02 12:07:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-10-02 12:07:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-02 12:07:51,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:51,884 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:51,884 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:51,884 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:51,884 INFO L82 PathProgramCache]: Analyzing trace with hash -549876912, now seen corresponding path program 32 times [2018-10-02 12:07:51,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:51,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:51,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:51,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:07:51,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:52,310 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:52,310 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 [2018-10-02 12:07:52,318 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:07:52,370 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:07:52,370 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:52,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:52,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:52,558 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:52,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-02 12:07:52,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-02 12:07:52,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-02 12:07:52,559 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:52,559 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 36 states. [2018-10-02 12:07:52,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:52,907 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2018-10-02 12:07:52,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-02 12:07:52,914 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2018-10-02 12:07:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:52,914 INFO L225 Difference]: With dead ends: 99 [2018-10-02 12:07:52,914 INFO L226 Difference]: Without dead ends: 85 [2018-10-02 12:07:52,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:07:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-02 12:07:52,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-02 12:07:52,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-02 12:07:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-10-02 12:07:52,919 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 82 [2018-10-02 12:07:52,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:52,920 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-10-02 12:07:52,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-02 12:07:52,920 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-10-02 12:07:52,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-02 12:07:52,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:52,921 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:52,921 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:52,921 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:52,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1456099148, now seen corresponding path program 33 times [2018-10-02 12:07:52,921 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:52,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:52,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:52,922 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:52,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:53,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:53,717 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 [2018-10-02 12:07:53,742 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:07:53,819 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-10-02 12:07:53,820 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:53,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:53,969 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:53,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-02 12:07:53,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-02 12:07:53,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-02 12:07:53,970 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:53,970 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 37 states. [2018-10-02 12:07:54,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:54,144 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2018-10-02 12:07:54,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-02 12:07:54,145 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2018-10-02 12:07:54,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:54,146 INFO L225 Difference]: With dead ends: 101 [2018-10-02 12:07:54,146 INFO L226 Difference]: Without dead ends: 87 [2018-10-02 12:07:54,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:07:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-02 12:07:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-02 12:07:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-02 12:07:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2018-10-02 12:07:54,151 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 84 [2018-10-02 12:07:54,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:54,152 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2018-10-02 12:07:54,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-02 12:07:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2018-10-02 12:07:54,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-02 12:07:54,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:54,153 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:54,153 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:54,153 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:54,153 INFO L82 PathProgramCache]: Analyzing trace with hash 758776904, now seen corresponding path program 34 times [2018-10-02 12:07:54,153 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:54,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:54,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:54,154 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:54,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:54,671 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:54,672 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 [2018-10-02 12:07:54,680 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:07:54,735 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:07:54,735 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:54,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:54,906 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:54,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-02 12:07:54,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:07:54,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:07:54,907 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:54,907 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 38 states. [2018-10-02 12:07:55,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:55,164 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2018-10-02 12:07:55,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:07:55,165 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2018-10-02 12:07:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:55,166 INFO L225 Difference]: With dead ends: 103 [2018-10-02 12:07:55,166 INFO L226 Difference]: Without dead ends: 89 [2018-10-02 12:07:55,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:07:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-02 12:07:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-02 12:07:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-02 12:07:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2018-10-02 12:07:55,170 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 86 [2018-10-02 12:07:55,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:55,171 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2018-10-02 12:07:55,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:07:55,171 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2018-10-02 12:07:55,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-02 12:07:55,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:55,172 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:55,172 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:55,172 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:55,172 INFO L82 PathProgramCache]: Analyzing trace with hash 646998596, now seen corresponding path program 35 times [2018-10-02 12:07:55,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:55,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:55,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:55,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:55,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:56,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:56,663 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 [2018-10-02 12:07:56,670 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:07:56,764 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-02 12:07:56,765 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:56,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:58,258 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:58,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-02 12:07:58,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-02 12:07:58,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-02 12:07:58,259 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:58,259 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 39 states. [2018-10-02 12:07:58,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:58,673 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2018-10-02 12:07:58,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-02 12:07:58,674 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2018-10-02 12:07:58,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:58,675 INFO L225 Difference]: With dead ends: 105 [2018-10-02 12:07:58,675 INFO L226 Difference]: Without dead ends: 91 [2018-10-02 12:07:58,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 1.2s impTime [2018-10-02 12:07:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-02 12:07:58,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-02 12:07:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-02 12:07:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-10-02 12:07:58,681 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 88 [2018-10-02 12:07:58,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:58,681 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-10-02 12:07:58,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-02 12:07:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-10-02 12:07:58,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-02 12:07:58,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:58,682 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:58,682 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:58,682 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:58,682 INFO L82 PathProgramCache]: Analyzing trace with hash 602227008, now seen corresponding path program 36 times [2018-10-02 12:07:58,682 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:58,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:58,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:58,683 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:58,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:07:59,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:59,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:07:59,206 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 [2018-10-02 12:07:59,214 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:07:59,310 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-10-02 12:07:59,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:07:59,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:07:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:07:59,497 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:07:59,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-02 12:07:59,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-02 12:07:59,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-02 12:07:59,498 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:07:59,498 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 40 states. [2018-10-02 12:07:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:07:59,865 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2018-10-02 12:07:59,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-02 12:07:59,866 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2018-10-02 12:07:59,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:07:59,866 INFO L225 Difference]: With dead ends: 107 [2018-10-02 12:07:59,866 INFO L226 Difference]: Without dead ends: 93 [2018-10-02 12:07:59,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime [2018-10-02 12:07:59,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-02 12:07:59,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-02 12:07:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-02 12:07:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2018-10-02 12:07:59,871 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 90 [2018-10-02 12:07:59,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:07:59,871 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2018-10-02 12:07:59,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-02 12:07:59,871 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2018-10-02 12:07:59,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-02 12:07:59,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:07:59,872 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:07:59,872 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:07:59,872 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:07:59,872 INFO L82 PathProgramCache]: Analyzing trace with hash 526403900, now seen corresponding path program 37 times [2018-10-02 12:07:59,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:07:59,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:07:59,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:59,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:07:59,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:07:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:00,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:00,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:00,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:08:00,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:00,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:00,766 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:00,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-02 12:08:00,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-02 12:08:00,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-02 12:08:00,767 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:00,767 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 41 states. [2018-10-02 12:08:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:01,060 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2018-10-02 12:08:01,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:08:01,061 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2018-10-02 12:08:01,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:01,062 INFO L225 Difference]: With dead ends: 109 [2018-10-02 12:08:01,062 INFO L226 Difference]: Without dead ends: 95 [2018-10-02 12:08:01,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime [2018-10-02 12:08:01,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-02 12:08:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-02 12:08:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-02 12:08:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-10-02 12:08:01,085 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2018-10-02 12:08:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:01,085 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-10-02 12:08:01,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-02 12:08:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-10-02 12:08:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-02 12:08:01,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:01,086 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:01,086 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:01,086 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:01,086 INFO L82 PathProgramCache]: Analyzing trace with hash 674841144, now seen corresponding path program 38 times [2018-10-02 12:08:01,087 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:01,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:01,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:01,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:01,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:02,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:02,260 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:08:02,267 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:02,327 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:02,328 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:02,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:02,538 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:02,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-02 12:08:02,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-02 12:08:02,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-02 12:08:02,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:02,539 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 42 states. [2018-10-02 12:08:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:03,006 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2018-10-02 12:08:03,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:08:03,007 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2018-10-02 12:08:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:03,007 INFO L225 Difference]: With dead ends: 111 [2018-10-02 12:08:03,007 INFO L226 Difference]: Without dead ends: 97 [2018-10-02 12:08:03,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime [2018-10-02 12:08:03,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-02 12:08:03,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-02 12:08:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-02 12:08:03,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2018-10-02 12:08:03,013 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 94 [2018-10-02 12:08:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:03,013 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2018-10-02 12:08:03,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-02 12:08:03,013 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2018-10-02 12:08:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-02 12:08:03,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:03,014 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:03,014 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:03,015 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:03,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1589111860, now seen corresponding path program 39 times [2018-10-02 12:08:03,015 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:03,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:03,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:03,016 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:03,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:03,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:03,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:03,985 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 [2018-10-02 12:08:03,992 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:04,134 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-10-02 12:08:04,134 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:04,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:04,364 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:04,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-02 12:08:04,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-02 12:08:04,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-02 12:08:04,365 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:04,366 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 43 states. [2018-10-02 12:08:04,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:04,641 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2018-10-02 12:08:04,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-02 12:08:04,642 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2018-10-02 12:08:04,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:04,643 INFO L225 Difference]: With dead ends: 113 [2018-10-02 12:08:04,643 INFO L226 Difference]: Without dead ends: 99 [2018-10-02 12:08:04,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime [2018-10-02 12:08:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-02 12:08:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-02 12:08:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-02 12:08:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2018-10-02 12:08:04,649 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 96 [2018-10-02 12:08:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:04,649 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2018-10-02 12:08:04,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-02 12:08:04,649 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2018-10-02 12:08:04,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-02 12:08:04,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:04,650 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:04,650 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:04,650 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:04,651 INFO L82 PathProgramCache]: Analyzing trace with hash -265025744, now seen corresponding path program 40 times [2018-10-02 12:08:04,651 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:04,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:04,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:04,652 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:04,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:06,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:06,040 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 [2018-10-02 12:08:06,048 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:06,109 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:06,109 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:06,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:07,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:07,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-02 12:08:07,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:08:07,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:08:07,669 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:07,670 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 44 states. [2018-10-02 12:08:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:09,060 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2018-10-02 12:08:09,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:08:09,061 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2018-10-02 12:08:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:09,062 INFO L225 Difference]: With dead ends: 115 [2018-10-02 12:08:09,062 INFO L226 Difference]: Without dead ends: 101 [2018-10-02 12:08:09,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 1.0s impTime [2018-10-02 12:08:09,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-02 12:08:09,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-02 12:08:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-02 12:08:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-10-02 12:08:09,066 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2018-10-02 12:08:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:09,066 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-10-02 12:08:09,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:08:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-10-02 12:08:09,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-02 12:08:09,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:09,067 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:09,067 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:09,067 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:09,067 INFO L82 PathProgramCache]: Analyzing trace with hash 320164652, now seen corresponding path program 41 times [2018-10-02 12:08:09,067 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:09,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:09,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:09,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:09,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:10,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:10,577 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:08:10,586 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:10,708 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-02 12:08:10,709 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:10,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:10,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:10,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-02 12:08:10,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-02 12:08:10,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-02 12:08:10,911 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:10,911 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 45 states. [2018-10-02 12:08:11,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:11,310 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2018-10-02 12:08:11,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-02 12:08:11,311 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2018-10-02 12:08:11,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:11,312 INFO L225 Difference]: With dead ends: 117 [2018-10-02 12:08:11,312 INFO L226 Difference]: Without dead ends: 103 [2018-10-02 12:08:11,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime [2018-10-02 12:08:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-02 12:08:11,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-02 12:08:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-02 12:08:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2018-10-02 12:08:11,318 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 100 [2018-10-02 12:08:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:11,318 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2018-10-02 12:08:11,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-02 12:08:11,318 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2018-10-02 12:08:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-02 12:08:11,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:11,319 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:11,319 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:11,319 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:11,319 INFO L82 PathProgramCache]: Analyzing trace with hash 47419432, now seen corresponding path program 42 times [2018-10-02 12:08:11,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:11,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:11,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:11,321 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:11,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:11,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:12,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:12,386 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 [2018-10-02 12:08:12,394 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:12,495 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-10-02 12:08:12,496 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:12,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:12,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:12,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:12,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-02 12:08:12,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-02 12:08:12,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-02 12:08:12,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:12,676 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 46 states. [2018-10-02 12:08:12,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:12,971 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2018-10-02 12:08:12,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-02 12:08:12,972 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2018-10-02 12:08:12,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:12,973 INFO L225 Difference]: With dead ends: 119 [2018-10-02 12:08:12,973 INFO L226 Difference]: Without dead ends: 105 [2018-10-02 12:08:12,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime [2018-10-02 12:08:12,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-02 12:08:12,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-02 12:08:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-02 12:08:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2018-10-02 12:08:12,978 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 102 [2018-10-02 12:08:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:12,978 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2018-10-02 12:08:12,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-02 12:08:12,978 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2018-10-02 12:08:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-02 12:08:12,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:12,979 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:12,979 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:12,979 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:12,979 INFO L82 PathProgramCache]: Analyzing trace with hash -67731932, now seen corresponding path program 43 times [2018-10-02 12:08:12,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:12,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:12,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:12,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:12,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:14,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:14,265 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:08:14,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:14,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:14,551 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:14,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-02 12:08:14,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-02 12:08:14,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-02 12:08:14,552 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:14,552 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 47 states. [2018-10-02 12:08:14,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:14,734 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2018-10-02 12:08:14,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-02 12:08:14,737 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2018-10-02 12:08:14,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:14,738 INFO L225 Difference]: With dead ends: 121 [2018-10-02 12:08:14,738 INFO L226 Difference]: Without dead ends: 107 [2018-10-02 12:08:14,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime [2018-10-02 12:08:14,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-02 12:08:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-02 12:08:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-02 12:08:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2018-10-02 12:08:14,744 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 104 [2018-10-02 12:08:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:14,744 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2018-10-02 12:08:14,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-02 12:08:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2018-10-02 12:08:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-02 12:08:14,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:14,745 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:14,745 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:14,745 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:14,745 INFO L82 PathProgramCache]: Analyzing trace with hash 940956960, now seen corresponding path program 44 times [2018-10-02 12:08:14,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:14,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:14,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:14,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:14,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:16,164 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:16,164 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 [2018-10-02 12:08:16,173 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:16,249 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:16,249 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:16,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:16,444 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:16,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-02 12:08:16,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-02 12:08:16,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-02 12:08:16,446 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:16,446 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 48 states. [2018-10-02 12:08:16,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:16,914 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2018-10-02 12:08:16,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-02 12:08:16,915 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2018-10-02 12:08:16,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:16,915 INFO L225 Difference]: With dead ends: 123 [2018-10-02 12:08:16,915 INFO L226 Difference]: Without dead ends: 109 [2018-10-02 12:08:16,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:08:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-02 12:08:16,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-02 12:08:16,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-02 12:08:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-10-02 12:08:16,923 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 106 [2018-10-02 12:08:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:16,923 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-10-02 12:08:16,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-02 12:08:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-10-02 12:08:16,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-02 12:08:16,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:16,924 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:16,924 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:16,925 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:16,925 INFO L82 PathProgramCache]: Analyzing trace with hash -371626724, now seen corresponding path program 45 times [2018-10-02 12:08:16,925 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:16,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:16,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:16,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:16,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:18,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:18,031 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:08:18,041 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:18,157 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-10-02 12:08:18,158 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:18,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:18,363 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:18,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-02 12:08:18,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-02 12:08:18,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-02 12:08:18,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:18,364 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 49 states. [2018-10-02 12:08:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:18,747 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2018-10-02 12:08:18,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-02 12:08:18,747 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2018-10-02 12:08:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:18,748 INFO L225 Difference]: With dead ends: 125 [2018-10-02 12:08:18,748 INFO L226 Difference]: Without dead ends: 111 [2018-10-02 12:08:18,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:08:18,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-02 12:08:18,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-02 12:08:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-02 12:08:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2018-10-02 12:08:18,754 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 108 [2018-10-02 12:08:18,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:18,755 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2018-10-02 12:08:18,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-02 12:08:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2018-10-02 12:08:18,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-02 12:08:18,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:18,756 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:18,756 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:18,756 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:18,756 INFO L82 PathProgramCache]: Analyzing trace with hash 955837976, now seen corresponding path program 46 times [2018-10-02 12:08:18,756 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:18,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:18,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:18,757 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:18,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:19,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:19,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:08:19,819 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:19,901 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:19,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:19,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:20,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:20,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-02 12:08:20,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-02 12:08:20,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-02 12:08:20,112 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:20,112 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 50 states. [2018-10-02 12:08:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:20,526 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2018-10-02 12:08:20,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-02 12:08:20,527 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2018-10-02 12:08:20,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:20,528 INFO L225 Difference]: With dead ends: 127 [2018-10-02 12:08:20,528 INFO L226 Difference]: Without dead ends: 113 [2018-10-02 12:08:20,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime [2018-10-02 12:08:20,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-02 12:08:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-02 12:08:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-02 12:08:20,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-10-02 12:08:20,532 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2018-10-02 12:08:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:20,532 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-10-02 12:08:20,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-02 12:08:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-10-02 12:08:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-02 12:08:20,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:20,533 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:20,533 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:20,533 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:20,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1044127764, now seen corresponding path program 47 times [2018-10-02 12:08:20,533 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:20,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:20,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:20,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:20,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:21,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:21,304 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 [2018-10-02 12:08:21,311 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:21,424 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-02 12:08:21,424 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:21,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:21,757 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:21,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-02 12:08:21,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-02 12:08:21,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-02 12:08:21,759 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:21,759 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 51 states. [2018-10-02 12:08:22,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:22,105 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2018-10-02 12:08:22,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-02 12:08:22,107 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2018-10-02 12:08:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:22,109 INFO L225 Difference]: With dead ends: 129 [2018-10-02 12:08:22,109 INFO L226 Difference]: Without dead ends: 115 [2018-10-02 12:08:22,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime [2018-10-02 12:08:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-02 12:08:22,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-02 12:08:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-02 12:08:22,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-10-02 12:08:22,115 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 112 [2018-10-02 12:08:22,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:22,116 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-10-02 12:08:22,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-02 12:08:22,116 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-10-02 12:08:22,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-02 12:08:22,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:22,117 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:22,117 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:22,117 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:22,117 INFO L82 PathProgramCache]: Analyzing trace with hash -8731888, now seen corresponding path program 48 times [2018-10-02 12:08:22,117 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:22,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:22,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:22,118 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:22,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:22,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:22,977 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 [2018-10-02 12:08:22,983 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:23,107 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-10-02 12:08:23,107 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:23,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:23,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:23,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-02 12:08:23,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-02 12:08:23,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-02 12:08:23,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:23,312 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 52 states. [2018-10-02 12:08:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:23,918 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2018-10-02 12:08:23,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-02 12:08:23,918 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2018-10-02 12:08:23,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:23,919 INFO L225 Difference]: With dead ends: 131 [2018-10-02 12:08:23,919 INFO L226 Difference]: Without dead ends: 117 [2018-10-02 12:08:23,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime [2018-10-02 12:08:23,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-02 12:08:23,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-02 12:08:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-02 12:08:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2018-10-02 12:08:23,925 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 114 [2018-10-02 12:08:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:23,925 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2018-10-02 12:08:23,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-02 12:08:23,926 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2018-10-02 12:08:23,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-02 12:08:23,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:23,927 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:23,927 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:23,927 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:23,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1805424396, now seen corresponding path program 49 times [2018-10-02 12:08:23,927 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:23,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:23,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:23,928 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:23,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:25,719 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:25,719 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:25,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:25,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:26,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:26,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-02 12:08:26,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-02 12:08:26,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-02 12:08:26,146 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:26,146 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 53 states. [2018-10-02 12:08:26,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:26,629 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2018-10-02 12:08:26,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-02 12:08:26,629 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2018-10-02 12:08:26,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:26,630 INFO L225 Difference]: With dead ends: 133 [2018-10-02 12:08:26,630 INFO L226 Difference]: Without dead ends: 119 [2018-10-02 12:08:26,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime [2018-10-02 12:08:26,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-02 12:08:26,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-02 12:08:26,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-02 12:08:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-10-02 12:08:26,635 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2018-10-02 12:08:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:26,635 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-10-02 12:08:26,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-02 12:08:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-10-02 12:08:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-02 12:08:26,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:26,636 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:26,636 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:26,636 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:26,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1452891144, now seen corresponding path program 50 times [2018-10-02 12:08:26,636 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:26,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:26,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:26,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:26,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:27,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:27,506 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:27,513 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:27,593 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:27,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:27,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:28,918 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:28,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-02 12:08:28,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-02 12:08:28,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-02 12:08:28,919 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:28,919 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 54 states. [2018-10-02 12:08:29,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:29,624 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2018-10-02 12:08:29,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-02 12:08:29,624 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2018-10-02 12:08:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:29,625 INFO L225 Difference]: With dead ends: 135 [2018-10-02 12:08:29,625 INFO L226 Difference]: Without dead ends: 121 [2018-10-02 12:08:29,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 0.7s impTime [2018-10-02 12:08:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-02 12:08:29,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-02 12:08:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-02 12:08:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-10-02 12:08:29,630 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 118 [2018-10-02 12:08:29,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:29,630 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-10-02 12:08:29,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-02 12:08:29,630 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-10-02 12:08:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-02 12:08:29,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:29,631 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:29,631 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:29,631 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:29,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1970852356, now seen corresponding path program 51 times [2018-10-02 12:08:29,631 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:29,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:29,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:29,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:29,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:30,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:30,476 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:30,486 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:30,625 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2018-10-02 12:08:30,625 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:30,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:30,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:30,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-02 12:08:30,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-02 12:08:30,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-02 12:08:30,894 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:30,894 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 55 states. [2018-10-02 12:08:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:31,292 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2018-10-02 12:08:31,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-02 12:08:31,292 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2018-10-02 12:08:31,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:31,293 INFO L225 Difference]: With dead ends: 137 [2018-10-02 12:08:31,293 INFO L226 Difference]: Without dead ends: 123 [2018-10-02 12:08:31,294 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime [2018-10-02 12:08:31,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-02 12:08:31,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-02 12:08:31,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-02 12:08:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2018-10-02 12:08:31,299 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 120 [2018-10-02 12:08:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:31,299 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2018-10-02 12:08:31,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-02 12:08:31,300 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2018-10-02 12:08:31,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-02 12:08:31,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:31,300 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:31,301 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:31,301 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:31,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1515370752, now seen corresponding path program 52 times [2018-10-02 12:08:31,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:31,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:31,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:31,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:31,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:32,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:32,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:32,324 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:32,405 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:32,405 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:32,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:32,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:32,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-02 12:08:32,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-02 12:08:32,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-02 12:08:32,697 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:32,697 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 56 states. [2018-10-02 12:08:33,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:33,202 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2018-10-02 12:08:33,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-02 12:08:33,202 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2018-10-02 12:08:33,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:33,203 INFO L225 Difference]: With dead ends: 139 [2018-10-02 12:08:33,203 INFO L226 Difference]: Without dead ends: 125 [2018-10-02 12:08:33,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime [2018-10-02 12:08:33,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-02 12:08:33,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-02 12:08:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-02 12:08:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-10-02 12:08:33,208 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 122 [2018-10-02 12:08:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:33,209 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-10-02 12:08:33,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-02 12:08:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-10-02 12:08:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-02 12:08:33,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:33,209 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:33,210 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:33,210 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:33,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1884213500, now seen corresponding path program 53 times [2018-10-02 12:08:33,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:33,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:33,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:33,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:33,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:34,887 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:34,887 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:34,901 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:35,068 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-02 12:08:35,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:35,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:35,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:35,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-02 12:08:35,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-02 12:08:35,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-02 12:08:35,395 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:35,395 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 57 states. [2018-10-02 12:08:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:35,973 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2018-10-02 12:08:35,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-02 12:08:35,973 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2018-10-02 12:08:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:35,974 INFO L225 Difference]: With dead ends: 141 [2018-10-02 12:08:35,974 INFO L226 Difference]: Without dead ends: 127 [2018-10-02 12:08:35,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime [2018-10-02 12:08:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-02 12:08:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-02 12:08:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-02 12:08:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2018-10-02 12:08:35,980 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 124 [2018-10-02 12:08:35,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:35,980 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2018-10-02 12:08:35,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-02 12:08:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2018-10-02 12:08:35,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-02 12:08:35,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:35,981 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:35,981 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:35,981 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:35,982 INFO L82 PathProgramCache]: Analyzing trace with hash -140191240, now seen corresponding path program 54 times [2018-10-02 12:08:35,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:35,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:35,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:35,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:35,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:37,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:37,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:37,374 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:37,382 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:37,520 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-10-02 12:08:37,520 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:37,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:37,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:37,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-02 12:08:37,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-02 12:08:37,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-02 12:08:37,748 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:37,748 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 58 states. [2018-10-02 12:08:38,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:38,262 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2018-10-02 12:08:38,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-02 12:08:38,263 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 126 [2018-10-02 12:08:38,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:38,264 INFO L225 Difference]: With dead ends: 143 [2018-10-02 12:08:38,264 INFO L226 Difference]: Without dead ends: 129 [2018-10-02 12:08:38,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:08:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-02 12:08:38,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-02 12:08:38,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-02 12:08:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2018-10-02 12:08:38,269 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 126 [2018-10-02 12:08:38,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:38,269 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2018-10-02 12:08:38,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-02 12:08:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2018-10-02 12:08:38,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-02 12:08:38,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:38,270 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:38,270 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:38,270 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:38,270 INFO L82 PathProgramCache]: Analyzing trace with hash 27038708, now seen corresponding path program 55 times [2018-10-02 12:08:38,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:38,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:38,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:38,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:38,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:39,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:39,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:39,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:39,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:40,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:40,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-02 12:08:40,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-02 12:08:40,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-02 12:08:40,209 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:40,209 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 59 states. [2018-10-02 12:08:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:40,741 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2018-10-02 12:08:40,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-02 12:08:40,741 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 128 [2018-10-02 12:08:40,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:40,742 INFO L225 Difference]: With dead ends: 145 [2018-10-02 12:08:40,742 INFO L226 Difference]: Without dead ends: 131 [2018-10-02 12:08:40,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime [2018-10-02 12:08:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-02 12:08:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-02 12:08:40,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-02 12:08:40,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-10-02 12:08:40,749 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 128 [2018-10-02 12:08:40,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:40,749 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-10-02 12:08:40,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-02 12:08:40,749 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-10-02 12:08:40,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-02 12:08:40,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:40,750 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:40,750 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:40,751 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:40,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1821228784, now seen corresponding path program 56 times [2018-10-02 12:08:40,751 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:40,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:40,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:40,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:40,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:42,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:42,495 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:42,503 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:42,586 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:42,586 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:42,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:42,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:42,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-02 12:08:42,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-02 12:08:42,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-02 12:08:42,819 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:42,819 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 60 states. [2018-10-02 12:08:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:43,374 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2018-10-02 12:08:43,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-02 12:08:43,375 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 130 [2018-10-02 12:08:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:43,376 INFO L225 Difference]: With dead ends: 147 [2018-10-02 12:08:43,376 INFO L226 Difference]: Without dead ends: 133 [2018-10-02 12:08:43,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime [2018-10-02 12:08:43,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-02 12:08:43,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-02 12:08:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-02 12:08:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2018-10-02 12:08:43,381 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 130 [2018-10-02 12:08:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:43,381 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2018-10-02 12:08:43,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-02 12:08:43,382 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2018-10-02 12:08:43,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-02 12:08:43,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:43,383 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:43,383 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:43,383 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:43,383 INFO L82 PathProgramCache]: Analyzing trace with hash -538961172, now seen corresponding path program 57 times [2018-10-02 12:08:43,383 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:43,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:43,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:43,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:43,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:45,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:45,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:45,004 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:45,014 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:08:45,167 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-10-02 12:08:45,168 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:45,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:45,399 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:45,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-02 12:08:45,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-02 12:08:45,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-02 12:08:45,400 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:45,400 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 61 states. [2018-10-02 12:08:45,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:45,966 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2018-10-02 12:08:45,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-02 12:08:45,967 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 132 [2018-10-02 12:08:45,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:45,968 INFO L225 Difference]: With dead ends: 149 [2018-10-02 12:08:45,968 INFO L226 Difference]: Without dead ends: 135 [2018-10-02 12:08:45,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime [2018-10-02 12:08:45,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-02 12:08:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-02 12:08:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-02 12:08:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2018-10-02 12:08:45,975 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 132 [2018-10-02 12:08:45,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:45,975 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2018-10-02 12:08:45,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-02 12:08:45,975 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2018-10-02 12:08:45,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-02 12:08:45,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:45,976 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:45,976 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:45,976 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:45,976 INFO L82 PathProgramCache]: Analyzing trace with hash -938776600, now seen corresponding path program 58 times [2018-10-02 12:08:45,977 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:45,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:45,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:45,977 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:45,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:46,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:46,998 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:47,005 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:08:47,094 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:08:47,095 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:47,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:47,413 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:47,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-02 12:08:47,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-02 12:08:47,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-02 12:08:47,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:47,414 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 62 states. [2018-10-02 12:08:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:47,865 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2018-10-02 12:08:47,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-02 12:08:47,866 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 134 [2018-10-02 12:08:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:47,867 INFO L225 Difference]: With dead ends: 151 [2018-10-02 12:08:47,867 INFO L226 Difference]: Without dead ends: 137 [2018-10-02 12:08:47,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:08:47,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-02 12:08:47,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-02 12:08:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-02 12:08:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-10-02 12:08:47,873 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2018-10-02 12:08:47,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:47,873 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-10-02 12:08:47,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-02 12:08:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-10-02 12:08:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-02 12:08:47,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:47,874 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:47,874 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:47,874 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:47,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1385653732, now seen corresponding path program 59 times [2018-10-02 12:08:47,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:47,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:47,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:47,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:47,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:49,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:49,579 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:49,589 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:08:49,738 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-02 12:08:49,738 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:49,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:50,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:50,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-02 12:08:50,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-02 12:08:50,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-02 12:08:50,170 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:50,170 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 63 states. [2018-10-02 12:08:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:50,750 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2018-10-02 12:08:50,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-02 12:08:50,750 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 136 [2018-10-02 12:08:50,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:50,751 INFO L225 Difference]: With dead ends: 153 [2018-10-02 12:08:50,751 INFO L226 Difference]: Without dead ends: 139 [2018-10-02 12:08:50,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime [2018-10-02 12:08:50,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-02 12:08:50,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-02 12:08:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-02 12:08:50,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-10-02 12:08:50,756 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 136 [2018-10-02 12:08:50,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:50,756 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-10-02 12:08:50,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-02 12:08:50,756 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-10-02 12:08:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-02 12:08:50,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:50,757 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:50,757 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:50,757 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:50,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1780208864, now seen corresponding path program 60 times [2018-10-02 12:08:50,758 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:50,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:50,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:50,758 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:50,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:52,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:52,556 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:52,563 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:08:52,721 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-10-02 12:08:52,721 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:52,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:52,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:52,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-02 12:08:52,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-02 12:08:52,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-02 12:08:52,964 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:52,964 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 64 states. [2018-10-02 12:08:53,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:53,613 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2018-10-02 12:08:53,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-02 12:08:53,613 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 138 [2018-10-02 12:08:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:53,614 INFO L225 Difference]: With dead ends: 155 [2018-10-02 12:08:53,614 INFO L226 Difference]: Without dead ends: 141 [2018-10-02 12:08:53,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime [2018-10-02 12:08:53,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-02 12:08:53,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-02 12:08:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-02 12:08:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-10-02 12:08:53,620 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 138 [2018-10-02 12:08:53,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:53,620 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-10-02 12:08:53,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-02 12:08:53,620 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-10-02 12:08:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-02 12:08:53,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:53,621 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:53,621 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:53,622 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:53,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1304398628, now seen corresponding path program 61 times [2018-10-02 12:08:53,622 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:53,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:53,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:53,623 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:53,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:55,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:55,621 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:55,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:55,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:55,969 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:55,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-02 12:08:55,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-02 12:08:55,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-02 12:08:55,970 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:55,970 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 65 states. [2018-10-02 12:08:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:56,566 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2018-10-02 12:08:56,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-02 12:08:56,567 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 140 [2018-10-02 12:08:56,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:56,568 INFO L225 Difference]: With dead ends: 157 [2018-10-02 12:08:56,568 INFO L226 Difference]: Without dead ends: 143 [2018-10-02 12:08:56,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime [2018-10-02 12:08:56,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-02 12:08:56,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-02 12:08:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-02 12:08:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2018-10-02 12:08:56,573 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 140 [2018-10-02 12:08:56,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:56,573 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2018-10-02 12:08:56,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-02 12:08:56,573 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2018-10-02 12:08:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-02 12:08:56,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:56,574 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:56,574 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:56,574 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:56,574 INFO L82 PathProgramCache]: Analyzing trace with hash -2084764200, now seen corresponding path program 62 times [2018-10-02 12:08:56,574 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:56,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:56,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:56,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:08:56,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:08:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:58,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:08:58,291 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:08:58,299 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:08:58,395 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:08:58,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:08:58,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:08:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:08:58,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:08:58,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-02 12:08:58,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-02 12:08:58,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-02 12:08:58,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:08:58,644 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 66 states. [2018-10-02 12:08:59,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:08:59,337 INFO L93 Difference]: Finished difference Result 159 states and 163 transitions. [2018-10-02 12:08:59,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-02 12:08:59,338 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 142 [2018-10-02 12:08:59,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:08:59,339 INFO L225 Difference]: With dead ends: 159 [2018-10-02 12:08:59,339 INFO L226 Difference]: Without dead ends: 145 [2018-10-02 12:08:59,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime [2018-10-02 12:08:59,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-02 12:08:59,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-02 12:08:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-02 12:08:59,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-10-02 12:08:59,344 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 142 [2018-10-02 12:08:59,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:08:59,344 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-10-02 12:08:59,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-02 12:08:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-10-02 12:08:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-02 12:08:59,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:08:59,345 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:08:59,346 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:08:59,346 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:08:59,346 INFO L82 PathProgramCache]: Analyzing trace with hash -396802092, now seen corresponding path program 63 times [2018-10-02 12:08:59,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:08:59,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:08:59,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:59,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:08:59,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:08:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:01,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:01,631 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:01,639 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:01,811 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2018-10-02 12:09:01,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:01,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:02,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:02,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-02 12:09:02,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-02 12:09:02,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-02 12:09:02,066 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:02,066 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 67 states. [2018-10-02 12:09:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:02,790 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2018-10-02 12:09:02,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-02 12:09:02,791 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 144 [2018-10-02 12:09:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:02,792 INFO L225 Difference]: With dead ends: 161 [2018-10-02 12:09:02,792 INFO L226 Difference]: Without dead ends: 147 [2018-10-02 12:09:02,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime [2018-10-02 12:09:02,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-02 12:09:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-02 12:09:02,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-02 12:09:02,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2018-10-02 12:09:02,797 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 144 [2018-10-02 12:09:02,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:02,798 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2018-10-02 12:09:02,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-02 12:09:02,798 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2018-10-02 12:09:02,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-02 12:09:02,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:02,799 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:02,799 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:02,799 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:02,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1762854192, now seen corresponding path program 64 times [2018-10-02 12:09:02,800 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:02,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:02,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:02,800 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:02,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:04,491 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:04,491 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:04,498 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:04,591 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:04,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:04,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:04,954 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:04,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-02 12:09:04,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-02 12:09:04,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-02 12:09:04,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:04,956 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 68 states. [2018-10-02 12:09:05,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:05,621 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2018-10-02 12:09:05,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-02 12:09:05,621 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 146 [2018-10-02 12:09:05,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:05,622 INFO L225 Difference]: With dead ends: 163 [2018-10-02 12:09:05,622 INFO L226 Difference]: Without dead ends: 149 [2018-10-02 12:09:05,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime [2018-10-02 12:09:05,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-02 12:09:05,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-02 12:09:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-02 12:09:05,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2018-10-02 12:09:05,630 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 146 [2018-10-02 12:09:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:05,630 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2018-10-02 12:09:05,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-02 12:09:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2018-10-02 12:09:05,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-02 12:09:05,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:05,631 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:05,631 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:05,631 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:05,631 INFO L82 PathProgramCache]: Analyzing trace with hash -278929716, now seen corresponding path program 65 times [2018-10-02 12:09:05,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:05,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:05,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:05,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:05,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:06,894 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:06,895 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:06,902 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:09:07,076 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-02 12:09:07,076 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:07,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:07,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:07,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-02 12:09:07,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-02 12:09:07,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-02 12:09:07,358 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:07,358 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 69 states. [2018-10-02 12:09:07,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:07,839 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2018-10-02 12:09:07,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-02 12:09:07,839 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 148 [2018-10-02 12:09:07,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:07,840 INFO L225 Difference]: With dead ends: 165 [2018-10-02 12:09:07,840 INFO L226 Difference]: Without dead ends: 151 [2018-10-02 12:09:07,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime [2018-10-02 12:09:07,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-02 12:09:07,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-02 12:09:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-02 12:09:07,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-10-02 12:09:07,847 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 148 [2018-10-02 12:09:07,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:07,847 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-10-02 12:09:07,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-02 12:09:07,847 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-10-02 12:09:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-02 12:09:07,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:07,848 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:07,849 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:07,849 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:07,849 INFO L82 PathProgramCache]: Analyzing trace with hash -156650552, now seen corresponding path program 66 times [2018-10-02 12:09:07,849 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:07,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:07,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:07,850 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:07,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:09,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:09,634 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:09,640 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:09:09,830 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-10-02 12:09:09,830 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:09,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:10,224 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:10,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-02 12:09:10,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-02 12:09:10,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-02 12:09:10,225 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:10,225 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 70 states. [2018-10-02 12:09:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:10,891 INFO L93 Difference]: Finished difference Result 167 states and 171 transitions. [2018-10-02 12:09:10,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-02 12:09:10,891 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 150 [2018-10-02 12:09:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:10,892 INFO L225 Difference]: With dead ends: 167 [2018-10-02 12:09:10,892 INFO L226 Difference]: Without dead ends: 153 [2018-10-02 12:09:10,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime [2018-10-02 12:09:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-02 12:09:10,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-02 12:09:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-02 12:09:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2018-10-02 12:09:10,897 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 150 [2018-10-02 12:09:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:10,897 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2018-10-02 12:09:10,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-02 12:09:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2018-10-02 12:09:10,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-02 12:09:10,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:10,910 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:10,910 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:10,911 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:10,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1389509060, now seen corresponding path program 67 times [2018-10-02 12:09:10,911 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:10,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:10,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:10,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:10,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:13,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:13,231 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:13,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:13,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:13,609 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:13,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-02 12:09:13,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-02 12:09:13,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-02 12:09:13,610 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:13,610 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 71 states. [2018-10-02 12:09:14,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:14,331 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2018-10-02 12:09:14,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-02 12:09:14,332 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 152 [2018-10-02 12:09:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:14,332 INFO L225 Difference]: With dead ends: 169 [2018-10-02 12:09:14,333 INFO L226 Difference]: Without dead ends: 155 [2018-10-02 12:09:14,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime [2018-10-02 12:09:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-02 12:09:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-02 12:09:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-02 12:09:14,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-10-02 12:09:14,339 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 152 [2018-10-02 12:09:14,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:14,339 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-10-02 12:09:14,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-02 12:09:14,339 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-10-02 12:09:14,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-02 12:09:14,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:14,340 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:14,340 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:14,340 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:14,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1190211776, now seen corresponding path program 68 times [2018-10-02 12:09:14,341 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:14,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:14,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:14,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:14,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:16,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:16,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:16,135 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:09:16,237 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:09:16,237 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:16,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:16,768 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:16,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-02 12:09:16,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-02 12:09:16,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-02 12:09:16,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:16,769 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 72 states. [2018-10-02 12:09:17,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:17,561 INFO L93 Difference]: Finished difference Result 171 states and 175 transitions. [2018-10-02 12:09:17,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-02 12:09:17,561 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 154 [2018-10-02 12:09:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:17,562 INFO L225 Difference]: With dead ends: 171 [2018-10-02 12:09:17,562 INFO L226 Difference]: Without dead ends: 157 [2018-10-02 12:09:17,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.5s impTime [2018-10-02 12:09:17,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-02 12:09:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-02 12:09:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-02 12:09:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2018-10-02 12:09:17,567 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 154 [2018-10-02 12:09:17,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:17,567 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2018-10-02 12:09:17,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-02 12:09:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2018-10-02 12:09:17,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-02 12:09:17,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:17,568 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:17,568 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:17,569 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:17,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1355917124, now seen corresponding path program 69 times [2018-10-02 12:09:17,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:17,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:17,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:17,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:17,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:19,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:19,081 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:19,088 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:19,290 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-10-02 12:09:19,290 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:19,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:19,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:19,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-02 12:09:19,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-02 12:09:19,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-02 12:09:19,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:19,564 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 73 states. [2018-10-02 12:09:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:20,351 INFO L93 Difference]: Finished difference Result 173 states and 177 transitions. [2018-10-02 12:09:20,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-02 12:09:20,351 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 156 [2018-10-02 12:09:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:20,352 INFO L225 Difference]: With dead ends: 173 [2018-10-02 12:09:20,352 INFO L226 Difference]: Without dead ends: 159 [2018-10-02 12:09:20,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime [2018-10-02 12:09:20,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-02 12:09:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-02 12:09:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-02 12:09:20,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2018-10-02 12:09:20,357 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 156 [2018-10-02 12:09:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:20,357 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2018-10-02 12:09:20,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-02 12:09:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2018-10-02 12:09:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-02 12:09:20,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:20,358 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:20,358 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:20,358 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:20,358 INFO L82 PathProgramCache]: Analyzing trace with hash -54431304, now seen corresponding path program 70 times [2018-10-02 12:09:20,359 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:20,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:20,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:20,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:20,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:22,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:22,547 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:22,554 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:22,659 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:22,659 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:22,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:22,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:22,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-02 12:09:22,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-02 12:09:22,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-02 12:09:22,969 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:22,970 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 74 states. [2018-10-02 12:09:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:23,661 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2018-10-02 12:09:23,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-02 12:09:23,662 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 158 [2018-10-02 12:09:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:23,663 INFO L225 Difference]: With dead ends: 175 [2018-10-02 12:09:23,663 INFO L226 Difference]: Without dead ends: 161 [2018-10-02 12:09:23,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime [2018-10-02 12:09:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-02 12:09:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-02 12:09:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-02 12:09:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-10-02 12:09:23,670 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 158 [2018-10-02 12:09:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:23,670 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-10-02 12:09:23,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-02 12:09:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-10-02 12:09:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-02 12:09:23,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:23,671 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:23,671 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:23,672 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:23,672 INFO L82 PathProgramCache]: Analyzing trace with hash 837958580, now seen corresponding path program 71 times [2018-10-02 12:09:23,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:23,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:23,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:23,673 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:23,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:26,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:26,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:26,187 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:09:26,387 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-02 12:09:26,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:26,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:26,718 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:26,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-02 12:09:26,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-02 12:09:26,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-02 12:09:26,720 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:26,720 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 75 states. [2018-10-02 12:09:27,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:27,472 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2018-10-02 12:09:27,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-02 12:09:27,473 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 160 [2018-10-02 12:09:27,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:27,474 INFO L225 Difference]: With dead ends: 177 [2018-10-02 12:09:27,474 INFO L226 Difference]: Without dead ends: 163 [2018-10-02 12:09:27,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime [2018-10-02 12:09:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-02 12:09:27,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-02 12:09:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-02 12:09:27,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2018-10-02 12:09:27,483 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 160 [2018-10-02 12:09:27,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:27,483 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2018-10-02 12:09:27,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-02 12:09:27,484 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2018-10-02 12:09:27,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-02 12:09:27,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:27,485 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:27,485 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:27,485 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:27,485 INFO L82 PathProgramCache]: Analyzing trace with hash -568822096, now seen corresponding path program 72 times [2018-10-02 12:09:27,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:27,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:27,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:27,486 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:27,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:29,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:29,031 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:29,038 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:09:29,284 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 74 check-sat command(s) [2018-10-02 12:09:29,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:29,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:29,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:29,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:29,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-02 12:09:29,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-02 12:09:29,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-02 12:09:29,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:29,577 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 76 states. [2018-10-02 12:09:30,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:30,034 INFO L93 Difference]: Finished difference Result 179 states and 183 transitions. [2018-10-02 12:09:30,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-02 12:09:30,034 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 162 [2018-10-02 12:09:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:30,035 INFO L225 Difference]: With dead ends: 179 [2018-10-02 12:09:30,035 INFO L226 Difference]: Without dead ends: 165 [2018-10-02 12:09:30,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime [2018-10-02 12:09:30,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-02 12:09:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-02 12:09:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-02 12:09:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2018-10-02 12:09:30,041 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 162 [2018-10-02 12:09:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:30,041 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2018-10-02 12:09:30,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-02 12:09:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2018-10-02 12:09:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-02 12:09:30,042 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:30,042 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:30,042 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:30,042 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:30,043 INFO L82 PathProgramCache]: Analyzing trace with hash 429646508, now seen corresponding path program 73 times [2018-10-02 12:09:30,043 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:30,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:30,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:30,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:30,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:32,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:32,856 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:32,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:32,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:33,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:33,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-02 12:09:33,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-02 12:09:33,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-02 12:09:33,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:33,382 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 77 states. [2018-10-02 12:09:34,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:34,177 INFO L93 Difference]: Finished difference Result 181 states and 185 transitions. [2018-10-02 12:09:34,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-02 12:09:34,177 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 164 [2018-10-02 12:09:34,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:34,178 INFO L225 Difference]: With dead ends: 181 [2018-10-02 12:09:34,178 INFO L226 Difference]: Without dead ends: 167 [2018-10-02 12:09:34,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.5s impTime [2018-10-02 12:09:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-02 12:09:34,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-02 12:09:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-02 12:09:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-10-02 12:09:34,184 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 164 [2018-10-02 12:09:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:34,184 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-10-02 12:09:34,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-02 12:09:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-10-02 12:09:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-02 12:09:34,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:34,185 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:34,185 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:34,185 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:34,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2114699352, now seen corresponding path program 74 times [2018-10-02 12:09:34,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:34,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:34,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:34,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:34,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:36,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:36,203 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:36,210 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:09:36,318 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:09:36,318 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:36,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:36,613 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:36,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-02 12:09:36,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-02 12:09:36,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-02 12:09:36,614 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:36,614 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 78 states. [2018-10-02 12:09:37,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:37,280 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2018-10-02 12:09:37,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-02 12:09:37,280 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 166 [2018-10-02 12:09:37,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:37,281 INFO L225 Difference]: With dead ends: 183 [2018-10-02 12:09:37,281 INFO L226 Difference]: Without dead ends: 169 [2018-10-02 12:09:37,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime [2018-10-02 12:09:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-02 12:09:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-02 12:09:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-02 12:09:37,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2018-10-02 12:09:37,287 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 166 [2018-10-02 12:09:37,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:37,288 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2018-10-02 12:09:37,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-02 12:09:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2018-10-02 12:09:37,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-02 12:09:37,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:37,289 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:37,289 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:37,289 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:37,289 INFO L82 PathProgramCache]: Analyzing trace with hash 900287908, now seen corresponding path program 75 times [2018-10-02 12:09:37,289 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:37,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:37,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:37,290 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:37,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:38,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:38,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:38,796 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:39,026 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2018-10-02 12:09:39,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:39,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:39,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:39,325 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:39,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-02 12:09:39,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-02 12:09:39,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-02 12:09:39,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:39,326 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 79 states. [2018-10-02 12:09:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:39,828 INFO L93 Difference]: Finished difference Result 185 states and 189 transitions. [2018-10-02 12:09:39,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-02 12:09:39,829 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 168 [2018-10-02 12:09:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:39,829 INFO L225 Difference]: With dead ends: 185 [2018-10-02 12:09:39,829 INFO L226 Difference]: Without dead ends: 171 [2018-10-02 12:09:39,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime [2018-10-02 12:09:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-02 12:09:39,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-02 12:09:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-02 12:09:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2018-10-02 12:09:39,835 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 168 [2018-10-02 12:09:39,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:39,835 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2018-10-02 12:09:39,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-02 12:09:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2018-10-02 12:09:39,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-02 12:09:39,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:39,836 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:39,836 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:39,836 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:39,836 INFO L82 PathProgramCache]: Analyzing trace with hash -799880032, now seen corresponding path program 76 times [2018-10-02 12:09:39,837 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:39,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:39,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:39,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:39,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:41,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:41,856 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:41,863 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:41,976 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:41,976 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:41,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:42,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:42,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-02 12:09:42,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-02 12:09:42,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-02 12:09:42,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:42,279 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 80 states. [2018-10-02 12:09:42,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:42,770 INFO L93 Difference]: Finished difference Result 187 states and 191 transitions. [2018-10-02 12:09:42,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-02 12:09:42,770 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 170 [2018-10-02 12:09:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:42,771 INFO L225 Difference]: With dead ends: 187 [2018-10-02 12:09:42,771 INFO L226 Difference]: Without dead ends: 173 [2018-10-02 12:09:42,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime [2018-10-02 12:09:42,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-02 12:09:42,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-02 12:09:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-02 12:09:42,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2018-10-02 12:09:42,777 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 170 [2018-10-02 12:09:42,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:42,777 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2018-10-02 12:09:42,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-02 12:09:42,777 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2018-10-02 12:09:42,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-02 12:09:42,778 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:42,778 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:42,778 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:42,779 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:42,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1721269404, now seen corresponding path program 77 times [2018-10-02 12:09:42,779 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:42,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:42,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:42,780 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:42,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:43,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:43,734 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:43,741 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:09:43,965 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-10-02 12:09:43,965 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:43,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:44,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:44,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-02 12:09:44,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-02 12:09:44,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-02 12:09:44,279 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:44,280 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 81 states. [2018-10-02 12:09:44,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:44,745 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2018-10-02 12:09:44,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-02 12:09:44,746 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 172 [2018-10-02 12:09:44,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:44,746 INFO L225 Difference]: With dead ends: 189 [2018-10-02 12:09:44,746 INFO L226 Difference]: Without dead ends: 175 [2018-10-02 12:09:44,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime [2018-10-02 12:09:44,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-02 12:09:44,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-02 12:09:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-02 12:09:44,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-10-02 12:09:44,754 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 172 [2018-10-02 12:09:44,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:44,754 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-10-02 12:09:44,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-02 12:09:44,755 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-10-02 12:09:44,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-02 12:09:44,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:44,756 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:44,756 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:44,756 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:44,756 INFO L82 PathProgramCache]: Analyzing trace with hash -2110644840, now seen corresponding path program 78 times [2018-10-02 12:09:44,756 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:44,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:44,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:44,757 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:44,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:46,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:46,599 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:46,607 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:09:46,837 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 80 check-sat command(s) [2018-10-02 12:09:46,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:46,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:47,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:47,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-02 12:09:47,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-02 12:09:47,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-02 12:09:47,150 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:47,150 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 82 states. [2018-10-02 12:09:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:47,806 INFO L93 Difference]: Finished difference Result 191 states and 195 transitions. [2018-10-02 12:09:47,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-02 12:09:47,806 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 174 [2018-10-02 12:09:47,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:47,807 INFO L225 Difference]: With dead ends: 191 [2018-10-02 12:09:47,807 INFO L226 Difference]: Without dead ends: 177 [2018-10-02 12:09:47,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime [2018-10-02 12:09:47,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-02 12:09:47,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-02 12:09:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-02 12:09:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2018-10-02 12:09:47,813 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 174 [2018-10-02 12:09:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:47,813 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2018-10-02 12:09:47,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-02 12:09:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2018-10-02 12:09:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-02 12:09:47,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:47,814 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:47,814 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:47,814 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:47,814 INFO L82 PathProgramCache]: Analyzing trace with hash 501706644, now seen corresponding path program 79 times [2018-10-02 12:09:47,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:47,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:47,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:47,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:47,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:49,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:49,323 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:49,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:49,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:49,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:49,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-02 12:09:49,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-02 12:09:49,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-02 12:09:49,772 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:49,772 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand 83 states. [2018-10-02 12:09:50,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:50,416 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2018-10-02 12:09:50,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-02 12:09:50,416 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 176 [2018-10-02 12:09:50,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:50,417 INFO L225 Difference]: With dead ends: 193 [2018-10-02 12:09:50,418 INFO L226 Difference]: Without dead ends: 179 [2018-10-02 12:09:50,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime [2018-10-02 12:09:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-02 12:09:50,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-02 12:09:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-02 12:09:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 181 transitions. [2018-10-02 12:09:50,423 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 181 transitions. Word has length 176 [2018-10-02 12:09:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:50,424 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 181 transitions. [2018-10-02 12:09:50,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-02 12:09:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 181 transitions. [2018-10-02 12:09:50,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-02 12:09:50,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:50,424 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:50,425 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:50,425 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:50,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1584385392, now seen corresponding path program 80 times [2018-10-02 12:09:50,425 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:50,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:50,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:50,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:09:50,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:51,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:51,972 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:51,980 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:09:52,095 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:09:52,096 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:52,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:52,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:52,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-02 12:09:52,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-02 12:09:52,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-02 12:09:52,424 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:52,424 INFO L87 Difference]: Start difference. First operand 179 states and 181 transitions. Second operand 84 states. [2018-10-02 12:09:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:53,039 INFO L93 Difference]: Finished difference Result 195 states and 199 transitions. [2018-10-02 12:09:53,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-02 12:09:53,039 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 178 [2018-10-02 12:09:53,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:53,040 INFO L225 Difference]: With dead ends: 195 [2018-10-02 12:09:53,040 INFO L226 Difference]: Without dead ends: 181 [2018-10-02 12:09:53,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime [2018-10-02 12:09:53,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-02 12:09:53,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-02 12:09:53,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-02 12:09:53,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-10-02 12:09:53,046 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 178 [2018-10-02 12:09:53,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:53,046 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-10-02 12:09:53,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-02 12:09:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-10-02 12:09:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-02 12:09:53,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:53,047 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:53,057 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:53,059 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:53,059 INFO L82 PathProgramCache]: Analyzing trace with hash -569104756, now seen corresponding path program 81 times [2018-10-02 12:09:53,059 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:53,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:53,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:53,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:53,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:54,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:54,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:54,326 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:09:54,579 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 83 check-sat command(s) [2018-10-02 12:09:54,579 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:54,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:54,986 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:54,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-02 12:09:54,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-02 12:09:54,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-02 12:09:54,988 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:54,988 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 85 states. [2018-10-02 12:09:55,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:55,438 INFO L93 Difference]: Finished difference Result 197 states and 201 transitions. [2018-10-02 12:09:55,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-02 12:09:55,439 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 180 [2018-10-02 12:09:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:55,440 INFO L225 Difference]: With dead ends: 197 [2018-10-02 12:09:55,440 INFO L226 Difference]: Without dead ends: 183 [2018-10-02 12:09:55,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime [2018-10-02 12:09:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-02 12:09:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-02 12:09:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-02 12:09:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2018-10-02 12:09:55,446 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 180 [2018-10-02 12:09:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:55,447 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2018-10-02 12:09:55,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-02 12:09:55,447 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2018-10-02 12:09:55,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-02 12:09:55,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:55,448 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:55,448 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:55,448 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:55,448 INFO L82 PathProgramCache]: Analyzing trace with hash 158010248, now seen corresponding path program 82 times [2018-10-02 12:09:55,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:55,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:55,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:55,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:55,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:09:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:57,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:09:57,278 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:09:57,285 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:09:57,400 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:09:57,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:09:57,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:09:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:09:57,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:09:57,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-02 12:09:57,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-02 12:09:57,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-02 12:09:57,713 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:09:57,713 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand 86 states. [2018-10-02 12:09:58,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:09:58,385 INFO L93 Difference]: Finished difference Result 199 states and 203 transitions. [2018-10-02 12:09:58,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-02 12:09:58,385 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 182 [2018-10-02 12:09:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:09:58,386 INFO L225 Difference]: With dead ends: 199 [2018-10-02 12:09:58,386 INFO L226 Difference]: Without dead ends: 185 [2018-10-02 12:09:58,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime [2018-10-02 12:09:58,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-02 12:09:58,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-02 12:09:58,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-02 12:09:58,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-10-02 12:09:58,392 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 182 [2018-10-02 12:09:58,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:09:58,393 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-10-02 12:09:58,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-02 12:09:58,393 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-10-02 12:09:58,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-02 12:09:58,394 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:09:58,394 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:09:58,394 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:09:58,394 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:09:58,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1164140156, now seen corresponding path program 83 times [2018-10-02 12:09:58,395 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:09:58,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:09:58,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:58,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:09:58,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:09:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:00,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:00,099 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:00,107 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:00,348 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-10-02 12:10:00,348 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:00,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:00,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:00,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-02 12:10:00,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-02 12:10:00,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-02 12:10:00,685 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:00,685 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 87 states. [2018-10-02 12:10:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:01,467 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2018-10-02 12:10:01,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-02 12:10:01,468 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 184 [2018-10-02 12:10:01,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:01,468 INFO L225 Difference]: With dead ends: 201 [2018-10-02 12:10:01,468 INFO L226 Difference]: Without dead ends: 187 [2018-10-02 12:10:01,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime [2018-10-02 12:10:01,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-02 12:10:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-02 12:10:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-02 12:10:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2018-10-02 12:10:01,477 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 184 [2018-10-02 12:10:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:01,477 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2018-10-02 12:10:01,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-02 12:10:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2018-10-02 12:10:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-02 12:10:01,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:01,478 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:01,479 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:01,479 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:01,479 INFO L82 PathProgramCache]: Analyzing trace with hash -440358784, now seen corresponding path program 84 times [2018-10-02 12:10:01,479 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:01,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:01,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:01,480 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:01,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:03,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:03,005 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:03,013 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:03,271 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 86 check-sat command(s) [2018-10-02 12:10:03,271 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:03,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:03,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:03,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-02 12:10:03,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-02 12:10:03,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-02 12:10:03,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:03,593 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 88 states. [2018-10-02 12:10:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:04,059 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2018-10-02 12:10:04,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-02 12:10:04,059 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 186 [2018-10-02 12:10:04,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:04,060 INFO L225 Difference]: With dead ends: 203 [2018-10-02 12:10:04,060 INFO L226 Difference]: Without dead ends: 189 [2018-10-02 12:10:04,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime [2018-10-02 12:10:04,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-02 12:10:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-02 12:10:04,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-02 12:10:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2018-10-02 12:10:04,068 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 186 [2018-10-02 12:10:04,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:04,068 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 191 transitions. [2018-10-02 12:10:04,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-02 12:10:04,069 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 191 transitions. [2018-10-02 12:10:04,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-02 12:10:04,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:04,070 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:04,070 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:04,070 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:04,070 INFO L82 PathProgramCache]: Analyzing trace with hash -671162244, now seen corresponding path program 85 times [2018-10-02 12:10:04,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:04,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:04,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:04,071 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:04,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:05,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:05,215 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:05,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:05,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:05,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:05,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-02 12:10:05,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-02 12:10:05,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-02 12:10:05,670 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:05,671 INFO L87 Difference]: Start difference. First operand 189 states and 191 transitions. Second operand 89 states. [2018-10-02 12:10:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:06,359 INFO L93 Difference]: Finished difference Result 205 states and 209 transitions. [2018-10-02 12:10:06,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-02 12:10:06,360 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 188 [2018-10-02 12:10:06,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:06,361 INFO L225 Difference]: With dead ends: 205 [2018-10-02 12:10:06,361 INFO L226 Difference]: Without dead ends: 191 [2018-10-02 12:10:06,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime [2018-10-02 12:10:06,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-02 12:10:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-02 12:10:06,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-02 12:10:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-10-02 12:10:06,368 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 188 [2018-10-02 12:10:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:06,368 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-10-02 12:10:06,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-02 12:10:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-10-02 12:10:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-02 12:10:06,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:06,369 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:06,369 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:06,369 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:06,369 INFO L82 PathProgramCache]: Analyzing trace with hash 865012088, now seen corresponding path program 86 times [2018-10-02 12:10:06,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:06,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:06,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:06,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:06,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:08,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:08,136 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:08,144 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:08,265 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:08,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:08,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:08,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:08,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-02 12:10:08,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-02 12:10:08,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-02 12:10:08,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:08,594 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 90 states. [2018-10-02 12:10:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:09,346 INFO L93 Difference]: Finished difference Result 207 states and 211 transitions. [2018-10-02 12:10:09,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-02 12:10:09,346 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 190 [2018-10-02 12:10:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:09,347 INFO L225 Difference]: With dead ends: 207 [2018-10-02 12:10:09,347 INFO L226 Difference]: Without dead ends: 193 [2018-10-02 12:10:09,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime [2018-10-02 12:10:09,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-02 12:10:09,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-02 12:10:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-02 12:10:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2018-10-02 12:10:09,353 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 190 [2018-10-02 12:10:09,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:09,353 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2018-10-02 12:10:09,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-02 12:10:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2018-10-02 12:10:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-02 12:10:09,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:09,354 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:09,354 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:09,354 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:09,354 INFO L82 PathProgramCache]: Analyzing trace with hash -340204684, now seen corresponding path program 87 times [2018-10-02 12:10:09,354 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:09,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:09,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:09,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:09,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:10,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:10,727 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:10,736 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:11,021 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 89 check-sat command(s) [2018-10-02 12:10:11,021 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:11,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:11,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:11,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-02 12:10:11,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-02 12:10:11,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-02 12:10:11,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:11,594 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 91 states. [2018-10-02 12:10:12,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:12,072 INFO L93 Difference]: Finished difference Result 209 states and 213 transitions. [2018-10-02 12:10:12,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-02 12:10:12,072 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 192 [2018-10-02 12:10:12,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:12,073 INFO L225 Difference]: With dead ends: 209 [2018-10-02 12:10:12,073 INFO L226 Difference]: Without dead ends: 195 [2018-10-02 12:10:12,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.0s impTime [2018-10-02 12:10:12,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-02 12:10:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-02 12:10:12,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-02 12:10:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2018-10-02 12:10:12,079 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 192 [2018-10-02 12:10:12,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:12,079 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2018-10-02 12:10:12,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-02 12:10:12,079 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2018-10-02 12:10:12,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-02 12:10:12,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:12,080 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:12,080 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:12,081 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:12,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1087647344, now seen corresponding path program 88 times [2018-10-02 12:10:12,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:12,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:12,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:12,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:12,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:14,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:14,260 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:14,268 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:14,391 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:14,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:14,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:14,728 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:14,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-02 12:10:14,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-02 12:10:14,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-02 12:10:14,730 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:14,730 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 92 states. [2018-10-02 12:10:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:15,489 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2018-10-02 12:10:15,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-02 12:10:15,489 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 194 [2018-10-02 12:10:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:15,490 INFO L225 Difference]: With dead ends: 211 [2018-10-02 12:10:15,490 INFO L226 Difference]: Without dead ends: 197 [2018-10-02 12:10:15,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime [2018-10-02 12:10:15,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-02 12:10:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-02 12:10:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-02 12:10:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2018-10-02 12:10:15,497 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 194 [2018-10-02 12:10:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:15,497 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2018-10-02 12:10:15,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-02 12:10:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2018-10-02 12:10:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-02 12:10:15,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:15,499 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:15,499 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:15,499 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:15,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1136088468, now seen corresponding path program 89 times [2018-10-02 12:10:15,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:15,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:15,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:15,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:15,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:17,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:17,363 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:17,371 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:17,644 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-10-02 12:10:17,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:17,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:17,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:17,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-02 12:10:17,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-02 12:10:17,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-02 12:10:17,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:17,986 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand 93 states. [2018-10-02 12:10:18,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:18,701 INFO L93 Difference]: Finished difference Result 213 states and 217 transitions. [2018-10-02 12:10:18,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-02 12:10:18,701 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 196 [2018-10-02 12:10:18,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:18,702 INFO L225 Difference]: With dead ends: 213 [2018-10-02 12:10:18,702 INFO L226 Difference]: Without dead ends: 199 [2018-10-02 12:10:18,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime [2018-10-02 12:10:18,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-02 12:10:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-02 12:10:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-02 12:10:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-10-02 12:10:18,708 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 196 [2018-10-02 12:10:18,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:18,708 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-10-02 12:10:18,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-02 12:10:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-10-02 12:10:18,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-02 12:10:18,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:18,709 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:18,710 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:18,710 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:18,710 INFO L82 PathProgramCache]: Analyzing trace with hash 747509608, now seen corresponding path program 90 times [2018-10-02 12:10:18,710 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:18,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:18,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:18,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:18,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:20,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:20,175 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:20,182 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:20,464 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2018-10-02 12:10:20,464 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:20,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:20,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:20,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-02 12:10:20,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-02 12:10:20,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-02 12:10:20,812 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:20,812 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 94 states. [2018-10-02 12:10:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:21,667 INFO L93 Difference]: Finished difference Result 215 states and 219 transitions. [2018-10-02 12:10:21,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-02 12:10:21,668 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 198 [2018-10-02 12:10:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:21,668 INFO L225 Difference]: With dead ends: 215 [2018-10-02 12:10:21,668 INFO L226 Difference]: Without dead ends: 201 [2018-10-02 12:10:21,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:10:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-02 12:10:21,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-02 12:10:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-02 12:10:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2018-10-02 12:10:21,676 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 198 [2018-10-02 12:10:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:21,676 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2018-10-02 12:10:21,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-02 12:10:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2018-10-02 12:10:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-02 12:10:21,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:21,677 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:21,677 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:21,677 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:21,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938268, now seen corresponding path program 91 times [2018-10-02 12:10:21,677 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:21,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:21,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:21,678 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:21,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:23,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:23,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:23,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:23,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:23,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:23,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-02 12:10:23,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-02 12:10:23,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-02 12:10:23,937 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:23,937 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand 95 states. [2018-10-02 12:10:24,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:24,701 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2018-10-02 12:10:24,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-02 12:10:24,702 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 200 [2018-10-02 12:10:24,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:24,703 INFO L225 Difference]: With dead ends: 217 [2018-10-02 12:10:24,703 INFO L226 Difference]: Without dead ends: 203 [2018-10-02 12:10:24,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime [2018-10-02 12:10:24,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-02 12:10:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-02 12:10:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-02 12:10:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2018-10-02 12:10:24,709 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 200 [2018-10-02 12:10:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:24,709 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2018-10-02 12:10:24,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-02 12:10:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2018-10-02 12:10:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-02 12:10:24,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:24,710 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:24,711 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:24,711 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:24,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1723516000, now seen corresponding path program 92 times [2018-10-02 12:10:24,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:24,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:24,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:24,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:24,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:27,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:27,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:27,149 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:27,274 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:27,274 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:27,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:27,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:27,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-02 12:10:27,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-02 12:10:27,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-02 12:10:27,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:27,630 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 96 states. [2018-10-02 12:10:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:28,479 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2018-10-02 12:10:28,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-02 12:10:28,480 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 202 [2018-10-02 12:10:28,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:28,480 INFO L225 Difference]: With dead ends: 219 [2018-10-02 12:10:28,481 INFO L226 Difference]: Without dead ends: 205 [2018-10-02 12:10:28,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime [2018-10-02 12:10:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-02 12:10:28,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-02 12:10:28,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-02 12:10:28,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-10-02 12:10:28,487 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 202 [2018-10-02 12:10:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:28,487 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-10-02 12:10:28,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-02 12:10:28,487 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-10-02 12:10:28,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-02 12:10:28,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:28,488 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:28,488 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:28,489 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:28,489 INFO L82 PathProgramCache]: Analyzing trace with hash 48333916, now seen corresponding path program 93 times [2018-10-02 12:10:28,489 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:28,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:28,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:28,489 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:28,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:29,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:29,928 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:29,937 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:30,249 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 95 check-sat command(s) [2018-10-02 12:10:30,249 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:30,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:30,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:30,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-02 12:10:30,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-02 12:10:30,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-02 12:10:30,608 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:30,608 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 97 states. [2018-10-02 12:10:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:31,188 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2018-10-02 12:10:31,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-02 12:10:31,189 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 204 [2018-10-02 12:10:31,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:31,190 INFO L225 Difference]: With dead ends: 221 [2018-10-02 12:10:31,190 INFO L226 Difference]: Without dead ends: 207 [2018-10-02 12:10:31,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:10:31,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-02 12:10:31,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-02 12:10:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-02 12:10:31,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2018-10-02 12:10:31,199 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 204 [2018-10-02 12:10:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:31,200 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2018-10-02 12:10:31,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-02 12:10:31,200 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2018-10-02 12:10:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-02 12:10:31,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:31,201 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:31,201 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:31,202 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:31,202 INFO L82 PathProgramCache]: Analyzing trace with hash 811087192, now seen corresponding path program 94 times [2018-10-02 12:10:31,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:31,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:31,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:31,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:31,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:33,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:33,527 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:33,537 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:33,667 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:33,667 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:33,672 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:34,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:34,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-02 12:10:34,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-02 12:10:34,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-02 12:10:34,051 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:34,051 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand 98 states. [2018-10-02 12:10:34,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:34,894 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2018-10-02 12:10:34,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-02 12:10:34,895 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 206 [2018-10-02 12:10:34,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:34,896 INFO L225 Difference]: With dead ends: 223 [2018-10-02 12:10:34,896 INFO L226 Difference]: Without dead ends: 209 [2018-10-02 12:10:34,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime [2018-10-02 12:10:34,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-02 12:10:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-02 12:10:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-02 12:10:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2018-10-02 12:10:34,902 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 206 [2018-10-02 12:10:34,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:34,902 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2018-10-02 12:10:34,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-02 12:10:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2018-10-02 12:10:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-02 12:10:34,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:34,903 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:34,903 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:34,904 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:34,904 INFO L82 PathProgramCache]: Analyzing trace with hash -622422188, now seen corresponding path program 95 times [2018-10-02 12:10:34,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:34,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:34,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:34,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:34,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:36,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:36,283 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:36,291 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:36,594 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-10-02 12:10:36,594 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:36,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:37,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:37,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-02 12:10:37,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-02 12:10:37,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-02 12:10:37,173 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:37,173 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 99 states. [2018-10-02 12:10:37,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:37,717 INFO L93 Difference]: Finished difference Result 225 states and 229 transitions. [2018-10-02 12:10:37,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-02 12:10:37,718 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 208 [2018-10-02 12:10:37,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:37,719 INFO L225 Difference]: With dead ends: 225 [2018-10-02 12:10:37,719 INFO L226 Difference]: Without dead ends: 211 [2018-10-02 12:10:37,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.0s impTime [2018-10-02 12:10:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-02 12:10:37,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-02 12:10:37,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-02 12:10:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-10-02 12:10:37,725 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 208 [2018-10-02 12:10:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:37,725 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-10-02 12:10:37,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-02 12:10:37,725 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-10-02 12:10:37,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-02 12:10:37,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:37,726 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:37,726 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:37,726 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:37,726 INFO L82 PathProgramCache]: Analyzing trace with hash 459565648, now seen corresponding path program 96 times [2018-10-02 12:10:37,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:37,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:37,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:37,727 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:37,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:39,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:39,456 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:39,462 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:10:39,769 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 98 check-sat command(s) [2018-10-02 12:10:39,769 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:39,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:40,136 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:40,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-02 12:10:40,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-02 12:10:40,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-02 12:10:40,138 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:40,138 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 100 states. [2018-10-02 12:10:40,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:40,950 INFO L93 Difference]: Finished difference Result 227 states and 231 transitions. [2018-10-02 12:10:40,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-02 12:10:40,950 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 210 [2018-10-02 12:10:40,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:40,951 INFO L225 Difference]: With dead ends: 227 [2018-10-02 12:10:40,951 INFO L226 Difference]: Without dead ends: 213 [2018-10-02 12:10:40,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime [2018-10-02 12:10:40,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-02 12:10:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-02 12:10:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-02 12:10:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2018-10-02 12:10:40,957 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 210 [2018-10-02 12:10:40,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:40,958 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2018-10-02 12:10:40,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-02 12:10:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2018-10-02 12:10:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-02 12:10:40,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:40,959 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:40,959 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:40,959 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:40,959 INFO L82 PathProgramCache]: Analyzing trace with hash 867790412, now seen corresponding path program 97 times [2018-10-02 12:10:40,959 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:40,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:40,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:40,960 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:40,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:43,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:43,243 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:43,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:43,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:43,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:43,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-02 12:10:43,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-02 12:10:43,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-02 12:10:43,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:43,760 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 101 states. [2018-10-02 12:10:44,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:44,408 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2018-10-02 12:10:44,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-02 12:10:44,408 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 212 [2018-10-02 12:10:44,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:44,409 INFO L225 Difference]: With dead ends: 229 [2018-10-02 12:10:44,409 INFO L226 Difference]: Without dead ends: 215 [2018-10-02 12:10:44,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime [2018-10-02 12:10:44,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-02 12:10:44,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-02 12:10:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-02 12:10:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2018-10-02 12:10:44,418 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 212 [2018-10-02 12:10:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:44,418 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2018-10-02 12:10:44,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-02 12:10:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2018-10-02 12:10:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-02 12:10:44,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:44,419 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:44,419 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:44,419 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:44,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1965202616, now seen corresponding path program 98 times [2018-10-02 12:10:44,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:44,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:44,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:44,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:10:44,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:46,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:46,356 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:46,363 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:10:46,511 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:10:46,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:46,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:46,888 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:46,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-02 12:10:46,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-02 12:10:46,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-02 12:10:46,889 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:46,890 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 102 states. [2018-10-02 12:10:47,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:47,944 INFO L93 Difference]: Finished difference Result 231 states and 235 transitions. [2018-10-02 12:10:47,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-02 12:10:47,945 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 214 [2018-10-02 12:10:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:47,946 INFO L225 Difference]: With dead ends: 231 [2018-10-02 12:10:47,946 INFO L226 Difference]: Without dead ends: 217 [2018-10-02 12:10:47,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime [2018-10-02 12:10:47,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-02 12:10:47,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-02 12:10:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-02 12:10:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2018-10-02 12:10:47,955 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 214 [2018-10-02 12:10:47,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:47,955 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 219 transitions. [2018-10-02 12:10:47,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-02 12:10:47,955 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 219 transitions. [2018-10-02 12:10:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-02 12:10:47,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:47,956 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:47,956 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:47,956 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:47,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1462236860, now seen corresponding path program 99 times [2018-10-02 12:10:47,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:47,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:47,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:47,958 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:47,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:49,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:49,627 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:49,635 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:10:49,984 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2018-10-02 12:10:49,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:49,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:50,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:50,367 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:50,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-02 12:10:50,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-02 12:10:50,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-02 12:10:50,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:50,369 INFO L87 Difference]: Start difference. First operand 217 states and 219 transitions. Second operand 103 states. [2018-10-02 12:10:51,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:51,002 INFO L93 Difference]: Finished difference Result 233 states and 237 transitions. [2018-10-02 12:10:51,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-02 12:10:51,003 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 216 [2018-10-02 12:10:51,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:51,003 INFO L225 Difference]: With dead ends: 233 [2018-10-02 12:10:51,003 INFO L226 Difference]: Without dead ends: 219 [2018-10-02 12:10:51,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime [2018-10-02 12:10:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-02 12:10:51,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-02 12:10:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-02 12:10:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 221 transitions. [2018-10-02 12:10:51,012 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 221 transitions. Word has length 216 [2018-10-02 12:10:51,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:51,012 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 221 transitions. [2018-10-02 12:10:51,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-02 12:10:51,012 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 221 transitions. [2018-10-02 12:10:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-02 12:10:51,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:51,013 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:51,013 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:51,014 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash 851517504, now seen corresponding path program 100 times [2018-10-02 12:10:51,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:51,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:51,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:51,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:51,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:53,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:53,317 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:53,325 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:10:53,461 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:10:53,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:53,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:53,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:53,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-02 12:10:53,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-02 12:10:53,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-02 12:10:53,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:53,958 INFO L87 Difference]: Start difference. First operand 219 states and 221 transitions. Second operand 104 states. [2018-10-02 12:10:54,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:54,889 INFO L93 Difference]: Finished difference Result 235 states and 239 transitions. [2018-10-02 12:10:54,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-02 12:10:54,889 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 218 [2018-10-02 12:10:54,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:54,889 INFO L225 Difference]: With dead ends: 235 [2018-10-02 12:10:54,889 INFO L226 Difference]: Without dead ends: 221 [2018-10-02 12:10:54,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.9s impTime [2018-10-02 12:10:54,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-02 12:10:54,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-02 12:10:54,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-02 12:10:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2018-10-02 12:10:54,896 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 218 [2018-10-02 12:10:54,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:54,897 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2018-10-02 12:10:54,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-02 12:10:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2018-10-02 12:10:54,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-02 12:10:54,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:54,898 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:54,898 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:54,898 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:54,898 INFO L82 PathProgramCache]: Analyzing trace with hash -423598020, now seen corresponding path program 101 times [2018-10-02 12:10:54,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:54,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:54,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:54,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:54,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:10:56,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:56,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:10:56,981 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:10:56,989 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:10:57,334 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-10-02 12:10:57,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:10:57,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:10:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:10:57,833 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:10:57,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-02 12:10:57,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-02 12:10:57,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-02 12:10:57,834 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:10:57,834 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand 105 states. [2018-10-02 12:10:58,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:10:58,751 INFO L93 Difference]: Finished difference Result 237 states and 241 transitions. [2018-10-02 12:10:58,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-02 12:10:58,751 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 220 [2018-10-02 12:10:58,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:10:58,752 INFO L225 Difference]: With dead ends: 237 [2018-10-02 12:10:58,752 INFO L226 Difference]: Without dead ends: 223 [2018-10-02 12:10:58,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime [2018-10-02 12:10:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-02 12:10:58,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-02 12:10:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-02 12:10:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2018-10-02 12:10:58,760 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 220 [2018-10-02 12:10:58,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:10:58,760 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2018-10-02 12:10:58,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-02 12:10:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2018-10-02 12:10:58,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-02 12:10:58,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:10:58,761 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:10:58,761 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:10:58,761 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:10:58,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1743937224, now seen corresponding path program 102 times [2018-10-02 12:10:58,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:10:58,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:10:58,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:58,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:10:58,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:10:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:01,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:01,227 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:01,236 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:11:01,581 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 104 check-sat command(s) [2018-10-02 12:11:01,581 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:01,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:01,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:01,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-02 12:11:01,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-02 12:11:01,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-02 12:11:01,979 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:01,979 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 106 states. [2018-10-02 12:11:03,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:03,005 INFO L93 Difference]: Finished difference Result 239 states and 243 transitions. [2018-10-02 12:11:03,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-02 12:11:03,005 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 222 [2018-10-02 12:11:03,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:03,006 INFO L225 Difference]: With dead ends: 239 [2018-10-02 12:11:03,006 INFO L226 Difference]: Without dead ends: 225 [2018-10-02 12:11:03,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.0s impTime [2018-10-02 12:11:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-02 12:11:03,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-02 12:11:03,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-02 12:11:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-10-02 12:11:03,014 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 222 [2018-10-02 12:11:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:03,014 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-10-02 12:11:03,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-02 12:11:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-10-02 12:11:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-02 12:11:03,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:03,015 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:11:03,015 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:03,016 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:03,016 INFO L82 PathProgramCache]: Analyzing trace with hash 720407348, now seen corresponding path program 103 times [2018-10-02 12:11:03,016 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:03,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:03,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:03,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:03,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:04,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:04,765 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:04,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:04,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:05,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:05,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-02 12:11:05,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-02 12:11:05,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-02 12:11:05,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:05,375 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 107 states. [2018-10-02 12:11:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:06,155 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2018-10-02 12:11:06,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-02 12:11:06,156 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 224 [2018-10-02 12:11:06,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:06,156 INFO L225 Difference]: With dead ends: 241 [2018-10-02 12:11:06,156 INFO L226 Difference]: Without dead ends: 227 [2018-10-02 12:11:06,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime [2018-10-02 12:11:06,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-02 12:11:06,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-02 12:11:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-02 12:11:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2018-10-02 12:11:06,164 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 224 [2018-10-02 12:11:06,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:06,164 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2018-10-02 12:11:06,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-02 12:11:06,164 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2018-10-02 12:11:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-02 12:11:06,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:06,165 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:11:06,165 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:06,165 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:06,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1866406352, now seen corresponding path program 104 times [2018-10-02 12:11:06,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:06,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:06,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:06,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:11:06,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:08,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:08,068 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:08,080 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:11:08,225 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:11:08,225 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:08,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:08,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:08,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-02 12:11:08,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-02 12:11:08,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-02 12:11:08,628 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:08,628 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand 108 states. [2018-10-02 12:11:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:09,344 INFO L93 Difference]: Finished difference Result 243 states and 247 transitions. [2018-10-02 12:11:09,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-02 12:11:09,344 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 226 [2018-10-02 12:11:09,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:09,345 INFO L225 Difference]: With dead ends: 243 [2018-10-02 12:11:09,345 INFO L226 Difference]: Without dead ends: 229 [2018-10-02 12:11:09,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime [2018-10-02 12:11:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-02 12:11:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-02 12:11:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-02 12:11:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 231 transitions. [2018-10-02 12:11:09,352 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 231 transitions. Word has length 226 [2018-10-02 12:11:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:09,352 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 231 transitions. [2018-10-02 12:11:09,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-02 12:11:09,352 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 231 transitions. [2018-10-02 12:11:09,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-02 12:11:09,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:09,353 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:11:09,353 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:09,353 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:09,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1008307668, now seen corresponding path program 105 times [2018-10-02 12:11:09,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:09,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:09,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:09,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:09,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:10,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:10,981 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:10,989 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:11:11,379 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 107 check-sat command(s) [2018-10-02 12:11:11,379 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:11,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:11,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:11,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-02 12:11:11,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-02 12:11:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-02 12:11:11,789 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:11,789 INFO L87 Difference]: Start difference. First operand 229 states and 231 transitions. Second operand 109 states. [2018-10-02 12:11:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:12,559 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2018-10-02 12:11:12,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-02 12:11:12,559 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 228 [2018-10-02 12:11:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:12,559 INFO L225 Difference]: With dead ends: 245 [2018-10-02 12:11:12,560 INFO L226 Difference]: Without dead ends: 231 [2018-10-02 12:11:12,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime [2018-10-02 12:11:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-02 12:11:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-02 12:11:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-02 12:11:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2018-10-02 12:11:12,567 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 228 [2018-10-02 12:11:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:12,567 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2018-10-02 12:11:12,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-02 12:11:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2018-10-02 12:11:12,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-02 12:11:12,567 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:12,568 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:11:12,568 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:12,568 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:12,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1009193176, now seen corresponding path program 106 times [2018-10-02 12:11:12,568 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:12,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:12,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:12,569 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:12,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:14,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:14,744 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:14,752 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:11:14,900 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:11:14,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:14,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:15,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:15,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-02 12:11:15,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-02 12:11:15,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-02 12:11:15,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:15,312 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand 110 states. [2018-10-02 12:11:16,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:16,361 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2018-10-02 12:11:16,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-02 12:11:16,361 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 230 [2018-10-02 12:11:16,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:16,362 INFO L225 Difference]: With dead ends: 247 [2018-10-02 12:11:16,362 INFO L226 Difference]: Without dead ends: 233 [2018-10-02 12:11:16,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime [2018-10-02 12:11:16,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-02 12:11:16,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-02 12:11:16,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-02 12:11:16,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2018-10-02 12:11:16,369 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 230 [2018-10-02 12:11:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:16,369 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2018-10-02 12:11:16,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-02 12:11:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2018-10-02 12:11:16,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-02 12:11:16,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:16,370 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:11:16,370 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:16,370 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:16,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1860166364, now seen corresponding path program 107 times [2018-10-02 12:11:16,371 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:16,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:16,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:16,371 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:16,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:11:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:19,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:11:19,397 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:11:19,404 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:11:19,772 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-10-02 12:11:19,772 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:11:19,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:11:20,189 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:11:20,210 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:11:20,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-02 12:11:20,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-02 12:11:20,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-02 12:11:20,212 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:11:20,212 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 111 states. [2018-10-02 12:11:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:11:21,353 INFO L93 Difference]: Finished difference Result 249 states and 253 transitions. [2018-10-02 12:11:21,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-02 12:11:21,353 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 232 [2018-10-02 12:11:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:11:21,354 INFO L225 Difference]: With dead ends: 249 [2018-10-02 12:11:21,354 INFO L226 Difference]: Without dead ends: 235 [2018-10-02 12:11:21,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.6s impTime [2018-10-02 12:11:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-02 12:11:21,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-02 12:11:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-02 12:11:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-10-02 12:11:21,360 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 232 [2018-10-02 12:11:21,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:11:21,361 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-10-02 12:11:21,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-02 12:11:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-10-02 12:11:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-02 12:11:21,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:11:21,361 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-02 12:11:21,362 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:11:21,362 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:11:21,362 INFO L82 PathProgramCache]: Analyzing trace with hash 693353504, now seen corresponding path program 108 times [2018-10-02 12:11:21,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:11:21,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:11:21,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:21,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:11:21,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:11:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-02 12:11:22,099 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-02 12:11:22,103 WARN L205 ceAbstractionStarter]: Timeout [2018-10-02 12:11:22,103 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:11:22 BoogieIcfgContainer [2018-10-02 12:11:22,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:11:22,104 INFO L168 Benchmark]: Toolchain (without parser) took 238712.26 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 364.9 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 171.2 MB). Peak memory consumption was 536.1 MB. Max. memory is 7.1 GB. [2018-10-02 12:11:22,106 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:11:22,106 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.71 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:11:22,107 INFO L168 Benchmark]: Boogie Preprocessor took 23.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:11:22,107 INFO L168 Benchmark]: RCFGBuilder took 280.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-02 12:11:22,108 INFO L168 Benchmark]: TraceAbstraction took 238360.58 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 364.9 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 150.1 MB). Peak memory consumption was 515.0 MB. Max. memory is 7.1 GB. [2018-10-02 12:11:22,111 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 0.57 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.71 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 280.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238360.58 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 364.9 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 150.1 MB). Peak memory consumption was 515.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 83). Cancelled while BasicCegarLoop was analyzing trace of length 235 with TraceHistMax 110, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 233 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 238.2s OverallTime, 112 OverallIterations, 110 TraceHistogramMax, 54.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 999 SDtfs, 31 SDslu, 23075 SDs, 0 SdLazy, 12947 SolverSat, 216 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19496 GetRequests, 13495 SyntacticMatches, 0 SemanticMatches, 6001 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 151.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=235occurred in iteration=111, 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: 0.6s AutomataMinimizationTime, 111 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.6s SsaConstructionTime, 14.9s SatisfiabilityAnalysisTime, 159.4s InterpolantComputationTime, 27011 NumberOfCodeBlocks, 27011 NumberOfCodeBlocksAsserted, 3206 NumberOfCheckSat, 26792 ConstructedInterpolants, 0 QuantifiedInterpolants, 11786318 SizeOfPredicates, 108 NumberOfNonLiveVariables, 65841 ConjunctsInSsa, 6102 ConjunctsInUnsatCore, 219 InterpolantComputations, 3 PerfectInterpolantSequences, 3864/867144 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/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-11-22-120.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_12-11-22-120.csv Completed graceful shutdown