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 0.1.23-9f4048f [2018-10-04 12:42:44,199 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:42:44,201 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:42:44,215 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:42:44,215 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:42:44,217 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:42:44,218 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:42:44,220 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:42:44,222 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:42:44,223 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:42:44,227 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-04 12:42:44,268 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 12:42:44,295 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:42:44,296 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:42:44,297 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:42:44,297 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:42:44,301 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:42:44,301 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:42:44,302 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:42:44,302 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:42:44,302 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:42:44,302 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:42:44,302 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:42:44,303 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:42:44,303 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:42:44,303 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:42:44,303 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:42:44,303 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:42:44,304 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:42:44,305 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:42:44,305 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:42:44,305 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:42:44,305 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:42:44,306 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:42:44,306 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:42:44,306 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:42:44,307 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:42:44,307 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:42:44,307 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:42:44,307 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:42:44,307 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:42:44,307 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:42:44,308 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 12:42:44,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:42:44,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:42:44,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:42:44,398 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:42:44,399 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:42:44,400 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-04 12:42:44,400 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl' [2018-10-04 12:42:44,463 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:42:44,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:42:44,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:42:44,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:42:44,467 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:42:44,490 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 04.10 12:42:44" (1/1) ... [2018-10-04 12:42:44,503 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 04.10 12:42:44" (1/1) ... [2018-10-04 12:42:44,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:42:44,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:42:44,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:42:44,512 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:42:44,523 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 04.10 12:42:44" (1/1) ... [2018-10-04 12:42:44,523 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 04.10 12:42:44" (1/1) ... [2018-10-04 12:42:44,524 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 04.10 12:42:44" (1/1) ... [2018-10-04 12:42:44,524 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 04.10 12:42:44" (1/1) ... [2018-10-04 12:42:44,527 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 04.10 12:42:44" (1/1) ... [2018-10-04 12:42:44,531 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 04.10 12:42:44" (1/1) ... [2018-10-04 12:42:44,532 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 04.10 12:42:44" (1/1) ... [2018-10-04 12:42:44,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:42:44,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:42:44,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:42:44,539 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:42:44,541 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 04.10 12:42:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:42:44,611 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-04 12:42:44,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 12:42:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 12:42:44,845 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 12:42:44,846 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:42:44 BoogieIcfgContainer [2018-10-04 12:42:44,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:42:44,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:42:44,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:42:44,850 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:42:44,851 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 04.10 12:42:44" (1/2) ... [2018-10-04 12:42:44,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd73869 and model type fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:42:44, skipping insertion in model container [2018-10-04 12:42:44,852 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 04.10 12:42:44" (2/2) ... [2018-10-04 12:42:44,854 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl [2018-10-04 12:42:44,864 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:42:44,872 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:42:44,924 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:42:44,925 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:42:44,925 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:42:44,925 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:42:44,925 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:42:44,926 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:42:44,926 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:42:44,926 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:42:44,926 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:42:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2018-10-04 12:42:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 12:42:44,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:44,949 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-04 12:42:44,950 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:44,958 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:44,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1807861163, now seen corresponding path program 1 times [2018-10-04 12:42:44,960 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:44,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:45,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:45,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:45,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:45,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:42:45,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 12:42:45,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 12:42:45,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 12:42:45,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:45,135 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2018-10-04 12:42:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:45,186 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2018-10-04 12:42:45,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 12:42:45,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-04 12:42:45,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:45,199 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:42:45,200 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 12:42:45,203 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 1 [2018-10-04 12:42:45,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 12:42:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 12:42:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 12:42:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2018-10-04 12:42:45,239 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 7 [2018-10-04 12:42:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:45,240 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2018-10-04 12:42:45,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 12:42:45,240 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2018-10-04 12:42:45,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 12:42:45,241 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:45,241 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-10-04 12:42:45,241 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:45,241 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:45,241 INFO L82 PathProgramCache]: Analyzing trace with hash 89245487, now seen corresponding path program 1 times [2018-10-04 12:42:45,242 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:45,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:45,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:45,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:45,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:45,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:45,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:42:45,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:45,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:45,567 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:45,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 12:42:45,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 12:42:45,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 12:42:45,568 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:45,569 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand 4 states. [2018-10-04 12:42:45,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:45,650 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2018-10-04 12:42:45,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 12:42:45,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-04 12:42:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:45,652 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:42:45,652 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 12:42:45,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-04 12:42:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 12:42:45,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 12:42:45,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 12:42:45,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2018-10-04 12:42:45,660 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2018-10-04 12:42:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:45,660 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-10-04 12:42:45,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 12:42:45,661 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2018-10-04 12:42:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 12:42:45,661 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:45,661 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-10-04 12:42:45,663 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:45,663 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:45,663 INFO L82 PathProgramCache]: Analyzing trace with hash 2061989811, now seen corresponding path program 2 times [2018-10-04 12:42:45,663 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:45,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:45,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:45,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:45,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:42:45,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:42:45,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-04 12:42:45,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 12:42:45,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 12:42:45,781 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:45,781 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 5 states. [2018-10-04 12:42:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:45,900 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2018-10-04 12:42:45,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:42:45,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-10-04 12:42:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:45,902 INFO L225 Difference]: With dead ends: 32 [2018-10-04 12:42:45,902 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 12:42:45,903 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 3 [2018-10-04 12:42:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 12:42:45,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2018-10-04 12:42:45,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 12:42:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-10-04 12:42:45,909 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2018-10-04 12:42:45,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:45,910 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-10-04 12:42:45,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 12:42:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-10-04 12:42:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 12:42:45,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:45,911 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-10-04 12:42:45,911 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:45,911 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:45,912 INFO L82 PathProgramCache]: Analyzing trace with hash 2062049393, now seen corresponding path program 1 times [2018-10-04 12:42:45,912 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:45,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:45,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:45,913 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:45,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:46,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-04 12:42:46,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:42:46,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-04 12:42:46,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 12:42:46,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 12:42:46,010 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:46,010 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2018-10-04 12:42:46,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:46,172 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2018-10-04 12:42:46,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:42:46,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-10-04 12:42:46,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:46,174 INFO L225 Difference]: With dead ends: 26 [2018-10-04 12:42:46,174 INFO L226 Difference]: Without dead ends: 24 [2018-10-04 12:42:46,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-04 12:42:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-04 12:42:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-10-04 12:42:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 12:42:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-10-04 12:42:46,182 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 11 [2018-10-04 12:42:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:46,183 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-10-04 12:42:46,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 12:42:46,183 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-10-04 12:42:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 12:42:46,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:46,184 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2018-10-04 12:42:46,184 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:46,185 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:46,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1980186676, now seen corresponding path program 1 times [2018-10-04 12:42:46,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:46,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:46,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:46,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:46,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:46,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:46,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:42:46,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:46,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:46,502 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:46,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 12:42:46,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 12:42:46,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 12:42:46,504 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:46,504 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2018-10-04 12:42:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:46,588 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2018-10-04 12:42:46,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:42:46,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-10-04 12:42:46,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:46,592 INFO L225 Difference]: With dead ends: 37 [2018-10-04 12:42:46,592 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 12:42:46,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-04 12:42:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 12:42:46,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 12:42:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 12:42:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-04 12:42:46,601 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2018-10-04 12:42:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:46,602 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-04 12:42:46,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 12:42:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-04 12:42:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 12:42:46,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:46,603 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:46,603 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:46,604 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:46,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1317950664, now seen corresponding path program 2 times [2018-10-04 12:42:46,604 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:46,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:46,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:46,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:46,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:46,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:46,716 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 [2018-10-04 12:42:46,727 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:46,761 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:46,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:46,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:46,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:46,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 12:42:46,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 12:42:46,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 12:42:46,914 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:46,914 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2018-10-04 12:42:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:46,947 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-10-04 12:42:46,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 12:42:46,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-10-04 12:42:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:46,948 INFO L225 Difference]: With dead ends: 39 [2018-10-04 12:42:46,948 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 12:42:46,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-04 12:42:46,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 12:42:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 12:42:46,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 12:42:46,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-04 12:42:46,955 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2018-10-04 12:42:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:46,955 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-04 12:42:46,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 12:42:46,955 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-04 12:42:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 12:42:46,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:46,956 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:46,957 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:46,957 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:46,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1142069956, now seen corresponding path program 3 times [2018-10-04 12:42:46,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:46,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:46,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:46,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:46,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:47,073 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:47,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:47,074 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 [2018-10-04 12:42:47,086 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:47,121 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-04 12:42:47,121 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:47,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:47,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:47,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 12:42:47,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 12:42:47,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 12:42:47,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:47,326 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 7 states. [2018-10-04 12:42:47,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:47,381 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-10-04 12:42:47,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 12:42:47,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-10-04 12:42:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:47,389 INFO L225 Difference]: With dead ends: 41 [2018-10-04 12:42:47,389 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 12:42:47,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 5 [2018-10-04 12:42:47,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 12:42:47,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 12:42:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 12:42:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-10-04 12:42:47,396 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2018-10-04 12:42:47,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:47,397 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-10-04 12:42:47,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 12:42:47,397 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-10-04 12:42:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 12:42:47,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:47,398 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:47,398 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:47,398 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:47,399 INFO L82 PathProgramCache]: Analyzing trace with hash -375565888, now seen corresponding path program 4 times [2018-10-04 12:42:47,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:47,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:47,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:47,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:47,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:47,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:47,547 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:42:47,561 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:47,615 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:47,615 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:47,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:48,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:48,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 12:42:48,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 12:42:48,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 12:42:48,028 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:48,028 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-10-04 12:42:48,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:48,068 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-10-04 12:42:48,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 12:42:48,072 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-10-04 12:42:48,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:48,072 INFO L225 Difference]: With dead ends: 43 [2018-10-04 12:42:48,073 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 12:42:48,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.0s impTime 6 [2018-10-04 12:42:48,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 12:42:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 12:42:48,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 12:42:48,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-10-04 12:42:48,078 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2018-10-04 12:42:48,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:48,080 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-10-04 12:42:48,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 12:42:48,080 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-10-04 12:42:48,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 12:42:48,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:48,081 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:48,081 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:48,081 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:48,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1465268668, now seen corresponding path program 5 times [2018-10-04 12:42:48,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:48,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:48,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:48,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:48,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:48,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:48,227 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:42:48,238 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:48,277 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 12:42:48,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:48,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:48,359 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:48,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:48,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 12:42:48,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 12:42:48,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 12:42:48,391 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:48,392 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 9 states. [2018-10-04 12:42:48,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:48,476 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-10-04 12:42:48,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 12:42:48,479 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-10-04 12:42:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:48,480 INFO L225 Difference]: With dead ends: 45 [2018-10-04 12:42:48,480 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 12:42:48,480 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 7 [2018-10-04 12:42:48,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 12:42:48,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 12:42:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 12:42:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-10-04 12:42:48,486 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 28 [2018-10-04 12:42:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:48,487 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-10-04 12:42:48,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 12:42:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-10-04 12:42:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 12:42:48,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:48,488 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:48,488 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:48,489 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:48,489 INFO L82 PathProgramCache]: Analyzing trace with hash 980751032, now seen corresponding path program 6 times [2018-10-04 12:42:48,489 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:48,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:48,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:48,490 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:48,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:48,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:48,602 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:42:48,611 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:42:48,739 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-10-04 12:42:48,740 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:48,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:48,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:48,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 12:42:48,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 12:42:48,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 12:42:48,939 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:48,939 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 10 states. [2018-10-04 12:42:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:48,996 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-10-04 12:42:48,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 12:42:48,996 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-10-04 12:42:48,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:48,997 INFO L225 Difference]: With dead ends: 47 [2018-10-04 12:42:48,997 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 12:42:48,998 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 8 [2018-10-04 12:42:48,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 12:42:49,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 12:42:49,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 12:42:49,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-10-04 12:42:49,004 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 30 [2018-10-04 12:42:49,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:49,004 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-10-04 12:42:49,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 12:42:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-10-04 12:42:49,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 12:42:49,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:49,005 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:49,005 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:49,006 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:49,006 INFO L82 PathProgramCache]: Analyzing trace with hash -784229196, now seen corresponding path program 7 times [2018-10-04 12:42:49,006 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:49,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:49,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:49,007 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:49,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:49,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:49,168 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 [2018-10-04 12:42:49,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:49,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:49,282 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:49,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:49,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 12:42:49,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 12:42:49,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 12:42:49,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:49,305 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2018-10-04 12:42:49,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:49,354 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-10-04 12:42:49,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 12:42:49,359 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2018-10-04 12:42:49,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:49,359 INFO L225 Difference]: With dead ends: 49 [2018-10-04 12:42:49,360 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 12:42:49,360 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 9 [2018-10-04 12:42:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 12:42:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 12:42:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 12:42:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-10-04 12:42:49,366 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 32 [2018-10-04 12:42:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:49,367 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-10-04 12:42:49,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 12:42:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-10-04 12:42:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 12:42:49,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:49,368 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:49,368 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:49,369 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:49,369 INFO L82 PathProgramCache]: Analyzing trace with hash -418146384, now seen corresponding path program 8 times [2018-10-04 12:42:49,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:49,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:49,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:49,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:49,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:49,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:49,628 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 [2018-10-04 12:42:49,638 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:49,664 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:49,665 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:49,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:49,744 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:49,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 12:42:49,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 12:42:49,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 12:42:49,745 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:49,745 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 12 states. [2018-10-04 12:42:49,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:49,792 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2018-10-04 12:42:49,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 12:42:49,793 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-10-04 12:42:49,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:49,793 INFO L225 Difference]: With dead ends: 51 [2018-10-04 12:42:49,794 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 12:42:49,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 10 [2018-10-04 12:42:49,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 12:42:49,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 12:42:49,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 12:42:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-10-04 12:42:49,801 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 34 [2018-10-04 12:42:49,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:49,801 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-10-04 12:42:49,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 12:42:49,801 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-10-04 12:42:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 12:42:49,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:49,802 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:49,803 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:49,803 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:49,803 INFO L82 PathProgramCache]: Analyzing trace with hash -799882324, now seen corresponding path program 9 times [2018-10-04 12:42:49,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:49,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:49,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:49,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:49,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:49,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:49,994 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 [2018-10-04 12:42:50,003 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:50,058 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-04 12:42:50,058 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:50,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:50,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:50,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 12:42:50,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 12:42:50,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 12:42:50,227 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:50,227 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 13 states. [2018-10-04 12:42:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:50,417 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-10-04 12:42:50,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 12:42:50,421 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2018-10-04 12:42:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:50,422 INFO L225 Difference]: With dead ends: 53 [2018-10-04 12:42:50,422 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 12:42:50,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 11 [2018-10-04 12:42:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 12:42:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 12:42:50,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 12:42:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-10-04 12:42:50,429 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 36 [2018-10-04 12:42:50,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:50,429 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-10-04 12:42:50,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 12:42:50,430 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-10-04 12:42:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 12:42:50,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:50,430 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:50,431 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:50,431 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:50,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1719066792, now seen corresponding path program 10 times [2018-10-04 12:42:50,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:50,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:50,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:50,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:50,686 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:50,687 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 [2018-10-04 12:42:50,694 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:50,724 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:50,724 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:50,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:50,868 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:50,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:50,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 12:42:50,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 12:42:50,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 12:42:50,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:50,890 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 14 states. [2018-10-04 12:42:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:50,972 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-10-04 12:42:50,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 12:42:50,973 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-10-04 12:42:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:50,974 INFO L225 Difference]: With dead ends: 55 [2018-10-04 12:42:50,974 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 12:42:50,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 12 [2018-10-04 12:42:50,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 12:42:50,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 12:42:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 12:42:50,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-04 12:42:50,986 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 38 [2018-10-04 12:42:50,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:50,986 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-04 12:42:50,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 12:42:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-04 12:42:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 12:42:50,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:50,989 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:50,989 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:50,989 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:50,990 INFO L82 PathProgramCache]: Analyzing trace with hash 67612324, now seen corresponding path program 11 times [2018-10-04 12:42:50,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:50,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:50,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:50,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:50,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:51,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:51,214 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 [2018-10-04 12:42:51,247 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:51,322 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-04 12:42:51,322 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:51,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:51,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:51,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 12:42:51,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 12:42:51,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 12:42:51,471 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:51,471 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 15 states. [2018-10-04 12:42:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:51,498 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2018-10-04 12:42:51,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 12:42:51,499 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-10-04 12:42:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:51,500 INFO L225 Difference]: With dead ends: 57 [2018-10-04 12:42:51,500 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 12:42:51,500 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 13 [2018-10-04 12:42:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 12:42:51,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 12:42:51,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 12:42:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-10-04 12:42:51,506 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 40 [2018-10-04 12:42:51,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:51,506 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-10-04 12:42:51,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 12:42:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-10-04 12:42:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 12:42:51,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:51,507 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:51,508 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:51,508 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:51,508 INFO L82 PathProgramCache]: Analyzing trace with hash -2137199200, now seen corresponding path program 12 times [2018-10-04 12:42:51,508 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:51,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:51,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:51,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:51,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:51,730 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:51,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:51,730 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:42:51,737 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:42:51,775 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-10-04 12:42:51,775 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:51,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:51,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:51,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 12:42:51,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 12:42:51,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 12:42:51,869 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:51,869 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 16 states. [2018-10-04 12:42:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:52,101 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-10-04 12:42:52,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 12:42:52,102 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2018-10-04 12:42:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:52,103 INFO L225 Difference]: With dead ends: 59 [2018-10-04 12:42:52,103 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 12:42:52,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-04 12:42:52,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 12:42:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 12:42:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 12:42:52,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2018-10-04 12:42:52,109 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 42 [2018-10-04 12:42:52,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:52,109 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2018-10-04 12:42:52,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 12:42:52,110 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2018-10-04 12:42:52,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 12:42:52,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:52,111 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:52,111 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:52,111 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:52,111 INFO L82 PathProgramCache]: Analyzing trace with hash 752770460, now seen corresponding path program 13 times [2018-10-04 12:42:52,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:52,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:52,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:52,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:52,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:53,122 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:53,123 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:53,123 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 [2018-10-04 12:42:53,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:53,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:53,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:53,582 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:53,582 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 12:42:53,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 12:42:53,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 12:42:53,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:53,583 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 17 states. [2018-10-04 12:42:53,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:53,664 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-10-04 12:42:53,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 12:42:53,664 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2018-10-04 12:42:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:53,665 INFO L225 Difference]: With dead ends: 61 [2018-10-04 12:42:53,665 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 12:42:53,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.6s impTime 15 [2018-10-04 12:42:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 12:42:53,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 12:42:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 12:42:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-10-04 12:42:53,672 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 44 [2018-10-04 12:42:53,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:53,673 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-10-04 12:42:53,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 12:42:53,673 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-10-04 12:42:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 12:42:53,674 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:53,674 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:53,674 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:53,674 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:53,674 INFO L82 PathProgramCache]: Analyzing trace with hash -830226792, now seen corresponding path program 14 times [2018-10-04 12:42:53,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:53,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:53,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:53,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:53,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:53,899 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:53,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:53,900 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 [2018-10-04 12:42:53,913 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:53,948 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:53,948 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:53,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:54,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:54,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 12:42:54,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 12:42:54,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 12:42:54,091 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:54,091 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 18 states. [2018-10-04 12:42:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:54,162 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-10-04 12:42:54,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 12:42:54,164 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2018-10-04 12:42:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:54,165 INFO L225 Difference]: With dead ends: 63 [2018-10-04 12:42:54,165 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 12:42:54,166 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 16 [2018-10-04 12:42:54,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 12:42:54,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 12:42:54,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 12:42:54,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-10-04 12:42:54,171 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 46 [2018-10-04 12:42:54,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:54,172 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-10-04 12:42:54,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 12:42:54,172 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-10-04 12:42:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 12:42:54,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:54,173 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:54,173 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:54,173 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:54,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1672163180, now seen corresponding path program 15 times [2018-10-04 12:42:54,173 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:54,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:54,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:54,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:54,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:54,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:54,396 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:42:54,403 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:54,654 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2018-10-04 12:42:54,654 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:54,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:55,125 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:55,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 12:42:55,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 12:42:55,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 12:42:55,126 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:55,127 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 19 states. [2018-10-04 12:42:55,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:55,198 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2018-10-04 12:42:55,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 12:42:55,198 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2018-10-04 12:42:55,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:55,199 INFO L225 Difference]: With dead ends: 65 [2018-10-04 12:42:55,199 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 12:42:55,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.1s impTime 17 [2018-10-04 12:42:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 12:42:55,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 12:42:55,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 12:42:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-10-04 12:42:55,205 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 48 [2018-10-04 12:42:55,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:55,206 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-10-04 12:42:55,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 12:42:55,206 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-10-04 12:42:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 12:42:55,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:55,206 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:55,207 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:55,207 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:55,207 INFO L82 PathProgramCache]: Analyzing trace with hash 975786896, now seen corresponding path program 16 times [2018-10-04 12:42:55,207 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:55,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:55,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:55,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:55,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:55,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:55,709 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 [2018-10-04 12:42:55,718 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:55,751 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:55,751 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:55,753 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:55,891 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:55,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 12:42:55,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 12:42:55,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 12:42:55,892 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:55,892 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 20 states. [2018-10-04 12:42:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:55,946 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-10-04 12:42:55,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 12:42:55,947 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2018-10-04 12:42:55,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:55,948 INFO L225 Difference]: With dead ends: 67 [2018-10-04 12:42:55,948 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 12:42:55,948 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 18 [2018-10-04 12:42:55,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 12:42:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 12:42:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 12:42:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-10-04 12:42:55,953 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 50 [2018-10-04 12:42:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:55,954 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-10-04 12:42:55,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 12:42:55,954 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-10-04 12:42:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 12:42:55,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:55,955 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:55,955 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:55,955 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:55,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1259796596, now seen corresponding path program 17 times [2018-10-04 12:42:55,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:55,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:55,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:55,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:55,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:56,404 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:56,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:56,408 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 [2018-10-04 12:42:56,415 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:42:56,456 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-04 12:42:56,457 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:56,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:56,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:56,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 12:42:56,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 12:42:56,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 12:42:56,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:56,595 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 21 states. [2018-10-04 12:42:56,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:56,713 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2018-10-04 12:42:56,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 12:42:56,714 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2018-10-04 12:42:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:56,714 INFO L225 Difference]: With dead ends: 69 [2018-10-04 12:42:56,714 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 12:42:56,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 6 [2018-10-04 12:42:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 12:42:56,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 12:42:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 12:42:56,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-10-04 12:42:56,720 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 52 [2018-10-04 12:42:56,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:56,720 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-10-04 12:42:56,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 12:42:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-10-04 12:42:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 12:42:56,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:56,721 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:56,721 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:56,721 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:56,721 INFO L82 PathProgramCache]: Analyzing trace with hash 2123082888, now seen corresponding path program 18 times [2018-10-04 12:42:56,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:56,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:56,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:56,722 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:56,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:57,014 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:57,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:57,071 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 [2018-10-04 12:42:57,079 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:42:57,126 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-10-04 12:42:57,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:57,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:57,231 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:57,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 12:42:57,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 12:42:57,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 12:42:57,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:57,232 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 22 states. [2018-10-04 12:42:57,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:57,324 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-10-04 12:42:57,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 12:42:57,325 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 54 [2018-10-04 12:42:57,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:57,326 INFO L225 Difference]: With dead ends: 71 [2018-10-04 12:42:57,326 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 12:42:57,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 7 [2018-10-04 12:42:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 12:42:57,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 12:42:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 12:42:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-10-04 12:42:57,332 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 54 [2018-10-04 12:42:57,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:57,332 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-10-04 12:42:57,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 12:42:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-10-04 12:42:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 12:42:57,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:57,333 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:57,333 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:57,334 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:57,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1780023940, now seen corresponding path program 19 times [2018-10-04 12:42:57,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:57,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:57,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:57,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:57,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:57,846 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:57,896 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:57,896 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 [2018-10-04 12:42:57,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:57,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:58,076 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:58,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 12:42:58,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 12:42:58,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 12:42:58,077 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:58,077 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 23 states. [2018-10-04 12:42:58,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:58,148 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2018-10-04 12:42:58,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 12:42:58,149 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2018-10-04 12:42:58,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:58,150 INFO L225 Difference]: With dead ends: 73 [2018-10-04 12:42:58,150 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 12:42:58,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 8 [2018-10-04 12:42:58,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 12:42:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 12:42:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 12:42:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-10-04 12:42:58,155 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 56 [2018-10-04 12:42:58,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:58,155 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-10-04 12:42:58,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 12:42:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-10-04 12:42:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 12:42:58,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:58,156 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:58,156 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:58,157 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:58,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1482110592, now seen corresponding path program 20 times [2018-10-04 12:42:58,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:58,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:58,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:58,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:42:58,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:58,585 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:58,609 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:58,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:58,609 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 [2018-10-04 12:42:58,618 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:42:58,664 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:42:58,664 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:58,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:58,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:58,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 12:42:58,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 12:42:58,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 12:42:58,815 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:58,815 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 24 states. [2018-10-04 12:42:58,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:58,860 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-10-04 12:42:58,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 12:42:58,861 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 58 [2018-10-04 12:42:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:58,861 INFO L225 Difference]: With dead ends: 75 [2018-10-04 12:42:58,862 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 12:42:58,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 9 [2018-10-04 12:42:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 12:42:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 12:42:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 12:42:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-10-04 12:42:58,866 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 58 [2018-10-04 12:42:58,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:58,866 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-10-04 12:42:58,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 12:42:58,866 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-10-04 12:42:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 12:42:58,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:58,867 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:58,867 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:58,868 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:58,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1067269764, now seen corresponding path program 21 times [2018-10-04 12:42:58,868 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:58,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:58,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:58,869 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:58,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:59,317 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:59,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:59,377 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 [2018-10-04 12:42:59,385 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:42:59,432 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2018-10-04 12:42:59,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:59,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:42:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:59,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:42:59,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 12:42:59,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 12:42:59,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 12:42:59,563 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:42:59,563 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 25 states. [2018-10-04 12:42:59,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:42:59,596 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2018-10-04 12:42:59,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 12:42:59,597 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 60 [2018-10-04 12:42:59,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:42:59,598 INFO L225 Difference]: With dead ends: 77 [2018-10-04 12:42:59,598 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 12:42:59,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 10 [2018-10-04 12:42:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 12:42:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 12:42:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 12:42:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2018-10-04 12:42:59,601 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 60 [2018-10-04 12:42:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:42:59,601 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2018-10-04 12:42:59,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 12:42:59,601 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2018-10-04 12:42:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 12:42:59,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:42:59,602 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:42:59,602 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:42:59,602 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:42:59,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1837192584, now seen corresponding path program 22 times [2018-10-04 12:42:59,602 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:42:59,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:42:59,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:59,603 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:42:59,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:42:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:42:59,840 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:42:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:42:59,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:42:59,921 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:42:59,929 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:42:59,984 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:42:59,984 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:42:59,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:00,153 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:00,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 12:43:00,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 12:43:00,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 12:43:00,154 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:00,154 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 26 states. [2018-10-04 12:43:00,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:00,216 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-10-04 12:43:00,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 12:43:00,217 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 62 [2018-10-04 12:43:00,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:00,217 INFO L225 Difference]: With dead ends: 79 [2018-10-04 12:43:00,217 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 12:43:00,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 11 [2018-10-04 12:43:00,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 12:43:00,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 12:43:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 12:43:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2018-10-04 12:43:00,221 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 62 [2018-10-04 12:43:00,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:00,221 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2018-10-04 12:43:00,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 12:43:00,221 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2018-10-04 12:43:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 12:43:00,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:00,222 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:00,222 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:00,222 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:00,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1296319604, now seen corresponding path program 23 times [2018-10-04 12:43:00,222 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:00,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:00,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:00,223 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:00,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:00,644 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:00,913 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:00,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:00,913 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:00,921 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:00,986 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-04 12:43:00,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:00,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:01,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:01,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 12:43:01,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 12:43:01,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 12:43:01,110 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:01,110 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand 27 states. [2018-10-04 12:43:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:01,178 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2018-10-04 12:43:01,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 12:43:01,178 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 64 [2018-10-04 12:43:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:01,179 INFO L225 Difference]: With dead ends: 81 [2018-10-04 12:43:01,179 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 12:43:01,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 12 [2018-10-04 12:43:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 12:43:01,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 12:43:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 12:43:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2018-10-04 12:43:01,185 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 64 [2018-10-04 12:43:01,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:01,185 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2018-10-04 12:43:01,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 12:43:01,185 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2018-10-04 12:43:01,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 12:43:01,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:01,186 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:01,186 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:01,186 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:01,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1829457776, now seen corresponding path program 24 times [2018-10-04 12:43:01,187 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:01,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:01,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:01,188 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:01,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:01,466 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:01,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:01,567 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 [2018-10-04 12:43:01,575 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:01,631 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2018-10-04 12:43:01,631 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:01,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:01,754 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:01,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 12:43:01,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 12:43:01,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 12:43:01,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:01,755 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 28 states. [2018-10-04 12:43:01,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:01,865 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2018-10-04 12:43:01,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 12:43:01,866 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 66 [2018-10-04 12:43:01,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:01,867 INFO L225 Difference]: With dead ends: 83 [2018-10-04 12:43:01,867 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 12:43:01,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 13 [2018-10-04 12:43:01,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 12:43:01,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 12:43:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 12:43:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2018-10-04 12:43:01,872 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 66 [2018-10-04 12:43:01,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:01,872 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2018-10-04 12:43:01,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 12:43:01,872 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2018-10-04 12:43:01,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 12:43:01,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:01,873 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:01,873 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:01,873 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:01,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1220834452, now seen corresponding path program 25 times [2018-10-04 12:43:01,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:01,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:01,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:01,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:01,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:02,126 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:02,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:02,220 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 [2018-10-04 12:43:02,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:02,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:02,387 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:02,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 12:43:02,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 12:43:02,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 12:43:02,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:02,388 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 29 states. [2018-10-04 12:43:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:02,464 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2018-10-04 12:43:02,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 12:43:02,465 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 68 [2018-10-04 12:43:02,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:02,466 INFO L225 Difference]: With dead ends: 85 [2018-10-04 12:43:02,466 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 12:43:02,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 14 [2018-10-04 12:43:02,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 12:43:02,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 12:43:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 12:43:02,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2018-10-04 12:43:02,471 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 68 [2018-10-04 12:43:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:02,472 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2018-10-04 12:43:02,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 12:43:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2018-10-04 12:43:02,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 12:43:02,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:02,473 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:02,473 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:02,473 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:02,473 INFO L82 PathProgramCache]: Analyzing trace with hash 910997608, now seen corresponding path program 26 times [2018-10-04 12:43:02,473 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:02,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:02,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:02,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:02,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:02,761 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:02,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:02,868 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 [2018-10-04 12:43:02,883 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:02,942 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:02,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:02,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:03,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:03,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 12:43:03,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 12:43:03,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 12:43:03,112 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:03,112 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 30 states. [2018-10-04 12:43:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:03,156 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2018-10-04 12:43:03,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 12:43:03,156 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 70 [2018-10-04 12:43:03,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:03,157 INFO L225 Difference]: With dead ends: 87 [2018-10-04 12:43:03,157 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 12:43:03,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 15 [2018-10-04 12:43:03,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 12:43:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 12:43:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 12:43:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2018-10-04 12:43:03,162 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 70 [2018-10-04 12:43:03,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:03,162 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2018-10-04 12:43:03,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 12:43:03,162 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2018-10-04 12:43:03,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 12:43:03,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:03,163 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:03,163 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:03,163 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:03,164 INFO L82 PathProgramCache]: Analyzing trace with hash 902207076, now seen corresponding path program 27 times [2018-10-04 12:43:03,164 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:03,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:03,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:03,165 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:03,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:03,992 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:04,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:04,114 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 [2018-10-04 12:43:04,121 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:04,184 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-10-04 12:43:04,184 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:04,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:04,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:04,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 12:43:04,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 12:43:04,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 12:43:04,315 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:04,315 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 31 states. [2018-10-04 12:43:04,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:04,374 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2018-10-04 12:43:04,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 12:43:04,375 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 72 [2018-10-04 12:43:04,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:04,376 INFO L225 Difference]: With dead ends: 89 [2018-10-04 12:43:04,376 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 12:43:04,376 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 16 [2018-10-04 12:43:04,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 12:43:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 12:43:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 12:43:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2018-10-04 12:43:04,382 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 72 [2018-10-04 12:43:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:04,382 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2018-10-04 12:43:04,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 12:43:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2018-10-04 12:43:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 12:43:04,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:04,383 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:04,383 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:04,383 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:04,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1044440416, now seen corresponding path program 28 times [2018-10-04 12:43:04,383 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:04,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:04,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:04,384 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:04,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:04,796 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:05,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:05,000 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:05,008 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:05,076 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:05,076 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:05,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:05,538 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:05,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 12:43:05,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 12:43:05,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 12:43:05,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:05,539 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 32 states. [2018-10-04 12:43:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:05,614 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2018-10-04 12:43:05,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 12:43:05,615 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 74 [2018-10-04 12:43:05,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:05,616 INFO L225 Difference]: With dead ends: 91 [2018-10-04 12:43:05,616 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 12:43:05,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.4s impTime 17 [2018-10-04 12:43:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 12:43:05,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 12:43:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 12:43:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2018-10-04 12:43:05,620 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 74 [2018-10-04 12:43:05,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:05,620 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2018-10-04 12:43:05,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 12:43:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2018-10-04 12:43:05,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 12:43:05,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:05,621 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:05,621 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:05,621 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:05,622 INFO L82 PathProgramCache]: Analyzing trace with hash 291726684, now seen corresponding path program 29 times [2018-10-04 12:43:05,622 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:05,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:05,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:05,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:05,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:06,166 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:06,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:06,409 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:06,417 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:06,479 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-04 12:43:06,479 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:06,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:06,603 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:06,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 12:43:06,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 12:43:06,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 12:43:06,604 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:06,604 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 33 states. [2018-10-04 12:43:06,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:06,693 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2018-10-04 12:43:06,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 12:43:06,694 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 76 [2018-10-04 12:43:06,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:06,695 INFO L225 Difference]: With dead ends: 93 [2018-10-04 12:43:06,695 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 12:43:06,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 18 [2018-10-04 12:43:06,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 12:43:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 12:43:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 12:43:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-10-04 12:43:06,700 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 76 [2018-10-04 12:43:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:06,700 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-10-04 12:43:06,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 12:43:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-10-04 12:43:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 12:43:06,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:06,701 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:06,701 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:06,701 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:06,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1511664040, now seen corresponding path program 30 times [2018-10-04 12:43:06,701 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:06,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:06,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:06,702 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:06,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:07,500 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:07,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:07,751 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 [2018-10-04 12:43:07,758 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:07,828 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2018-10-04 12:43:07,828 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:07,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:07,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:07,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 12:43:07,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 12:43:07,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 12:43:07,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:07,972 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 34 states. [2018-10-04 12:43:08,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:08,061 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2018-10-04 12:43:08,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 12:43:08,062 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 78 [2018-10-04 12:43:08,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:08,063 INFO L225 Difference]: With dead ends: 95 [2018-10-04 12:43:08,063 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 12:43:08,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 19 [2018-10-04 12:43:08,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 12:43:08,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 12:43:08,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 12:43:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-10-04 12:43:08,067 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 78 [2018-10-04 12:43:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:08,067 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-10-04 12:43:08,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 12:43:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-10-04 12:43:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 12:43:08,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:08,067 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:08,068 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:08,068 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:08,068 INFO L82 PathProgramCache]: Analyzing trace with hash 596637780, now seen corresponding path program 31 times [2018-10-04 12:43:08,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:08,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:08,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:08,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:08,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:08,360 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:08,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:08,670 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 [2018-10-04 12:43:08,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:08,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:08,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:08,885 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:08,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 12:43:08,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 12:43:08,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 12:43:08,886 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:08,886 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 35 states. [2018-10-04 12:43:08,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:08,987 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2018-10-04 12:43:08,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 12:43:08,988 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2018-10-04 12:43:08,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:08,989 INFO L225 Difference]: With dead ends: 97 [2018-10-04 12:43:08,989 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 12:43:08,989 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 20 [2018-10-04 12:43:08,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 12:43:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 12:43:08,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 12:43:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-10-04 12:43:08,995 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 80 [2018-10-04 12:43:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:08,995 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-10-04 12:43:08,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 12:43:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-10-04 12:43:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 12:43:08,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:08,996 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:08,996 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:08,996 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:08,997 INFO L82 PathProgramCache]: Analyzing trace with hash -549876912, now seen corresponding path program 32 times [2018-10-04 12:43:08,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:08,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:08,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:08,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:08,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:09,304 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:09,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:09,456 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:09,464 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:09,517 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:09,517 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:09,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:09,708 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:09,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 12:43:09,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 12:43:09,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 12:43:09,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:09,709 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 36 states. [2018-10-04 12:43:09,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:09,860 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2018-10-04 12:43:09,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 12:43:09,860 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 82 [2018-10-04 12:43:09,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:09,861 INFO L225 Difference]: With dead ends: 99 [2018-10-04 12:43:09,861 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 12:43:09,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 21 [2018-10-04 12:43:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 12:43:09,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 12:43:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 12:43:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2018-10-04 12:43:09,866 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 82 [2018-10-04 12:43:09,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:09,867 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2018-10-04 12:43:09,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 12:43:09,867 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2018-10-04 12:43:09,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 12:43:09,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:09,867 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:09,868 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:09,868 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:09,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1456099148, now seen corresponding path program 33 times [2018-10-04 12:43:09,868 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:09,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:09,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:09,868 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:09,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:10,206 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:10,486 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:10,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:10,493 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 [2018-10-04 12:43:10,501 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:10,577 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2018-10-04 12:43:10,577 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:10,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:10,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:10,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 12:43:10,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 12:43:10,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 12:43:10,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:10,723 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 37 states. [2018-10-04 12:43:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:10,822 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2018-10-04 12:43:10,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 12:43:10,822 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 84 [2018-10-04 12:43:10,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:10,823 INFO L225 Difference]: With dead ends: 101 [2018-10-04 12:43:10,823 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 12:43:10,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 7 [2018-10-04 12:43:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 12:43:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 12:43:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 12:43:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2018-10-04 12:43:10,828 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 84 [2018-10-04 12:43:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:10,828 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2018-10-04 12:43:10,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 12:43:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2018-10-04 12:43:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 12:43:10,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:10,829 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:10,829 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:10,829 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:10,830 INFO L82 PathProgramCache]: Analyzing trace with hash 758776904, now seen corresponding path program 34 times [2018-10-04 12:43:10,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:10,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:10,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:10,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:10,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:11,326 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:11,515 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:11,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:11,536 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:11,543 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:11,599 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:11,600 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:11,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1278 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:11,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:11,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 12:43:11,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 12:43:11,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 12:43:11,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:11,821 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 38 states. [2018-10-04 12:43:11,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:11,927 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2018-10-04 12:43:11,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 12:43:11,927 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 86 [2018-10-04 12:43:11,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:11,928 INFO L225 Difference]: With dead ends: 103 [2018-10-04 12:43:11,928 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 12:43:11,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime 8 [2018-10-04 12:43:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 12:43:11,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 12:43:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 12:43:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2018-10-04 12:43:11,932 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 86 [2018-10-04 12:43:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:11,933 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2018-10-04 12:43:11,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 12:43:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2018-10-04 12:43:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 12:43:11,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:11,933 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:11,934 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:11,934 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:11,934 INFO L82 PathProgramCache]: Analyzing trace with hash 646998596, now seen corresponding path program 35 times [2018-10-04 12:43:11,934 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:11,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:11,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:11,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:11,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:12,488 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:13,654 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:13,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:13,877 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:13,885 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:13,985 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-04 12:43:13,985 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:13,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:14,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:14,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:14,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 12:43:14,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 12:43:14,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 12:43:14,959 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:14,959 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand 39 states. [2018-10-04 12:43:15,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:15,047 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2018-10-04 12:43:15,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 12:43:15,048 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 88 [2018-10-04 12:43:15,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:15,049 INFO L225 Difference]: With dead ends: 105 [2018-10-04 12:43:15,049 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 12:43:15,049 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 9 [2018-10-04 12:43:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 12:43:15,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 12:43:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 12:43:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2018-10-04 12:43:15,052 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 88 [2018-10-04 12:43:15,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:15,053 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2018-10-04 12:43:15,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 12:43:15,053 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2018-10-04 12:43:15,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 12:43:15,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:15,053 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:15,054 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:15,054 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash 602227008, now seen corresponding path program 36 times [2018-10-04 12:43:15,054 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:15,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:15,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:15,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:15,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:16,316 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:16,503 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:16,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:16,568 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 [2018-10-04 12:43:16,575 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:16,664 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2018-10-04 12:43:16,664 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:16,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1424 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:16,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:16,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 12:43:16,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 12:43:16,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 12:43:16,874 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:16,875 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand 40 states. [2018-10-04 12:43:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:17,027 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2018-10-04 12:43:17,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 12:43:17,027 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 90 [2018-10-04 12:43:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:17,028 INFO L225 Difference]: With dead ends: 107 [2018-10-04 12:43:17,028 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 12:43:17,029 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 10 [2018-10-04 12:43:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 12:43:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 12:43:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 12:43:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2018-10-04 12:43:17,033 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 90 [2018-10-04 12:43:17,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:17,033 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2018-10-04 12:43:17,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 12:43:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2018-10-04 12:43:17,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 12:43:17,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:17,034 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:17,034 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:17,034 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:17,035 INFO L82 PathProgramCache]: Analyzing trace with hash 526403900, now seen corresponding path program 37 times [2018-10-04 12:43:17,035 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:17,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:17,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:17,035 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:17,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:17,674 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:18,013 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:18,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:18,086 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 [2018-10-04 12:43:18,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:18,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:18,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:18,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 12:43:18,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 12:43:18,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 12:43:18,314 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:18,314 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 41 states. [2018-10-04 12:43:18,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:18,396 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2018-10-04 12:43:18,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 12:43:18,397 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 92 [2018-10-04 12:43:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:18,398 INFO L225 Difference]: With dead ends: 109 [2018-10-04 12:43:18,398 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 12:43:18,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 11 [2018-10-04 12:43:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 12:43:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 12:43:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 12:43:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2018-10-04 12:43:18,403 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 92 [2018-10-04 12:43:18,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:18,403 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2018-10-04 12:43:18,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 12:43:18,404 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2018-10-04 12:43:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 12:43:18,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:18,404 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:18,404 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:18,405 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:18,405 INFO L82 PathProgramCache]: Analyzing trace with hash 674841144, now seen corresponding path program 38 times [2018-10-04 12:43:18,405 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:18,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:18,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:18,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:18,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:18,720 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:19,072 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:19,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:19,229 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 [2018-10-04 12:43:19,236 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:19,298 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:19,298 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:19,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:19,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:19,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 12:43:19,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 12:43:19,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 12:43:19,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:19,494 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 42 states. [2018-10-04 12:43:19,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:19,707 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2018-10-04 12:43:19,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 12:43:19,708 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2018-10-04 12:43:19,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:19,709 INFO L225 Difference]: With dead ends: 111 [2018-10-04 12:43:19,709 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 12:43:19,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 12 [2018-10-04 12:43:19,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 12:43:19,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 12:43:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 12:43:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2018-10-04 12:43:19,715 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 94 [2018-10-04 12:43:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:19,715 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2018-10-04 12:43:19,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 12:43:19,715 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2018-10-04 12:43:19,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 12:43:19,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:19,716 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:19,716 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:19,716 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:19,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1589111860, now seen corresponding path program 39 times [2018-10-04 12:43:19,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:19,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:19,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:19,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:19,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:20,164 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:20,566 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:20,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:20,660 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 [2018-10-04 12:43:20,668 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:20,814 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-10-04 12:43:20,814 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:20,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1658 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:20,985 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:20,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 12:43:20,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 12:43:20,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 12:43:20,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:20,986 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand 43 states. [2018-10-04 12:43:21,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:21,162 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2018-10-04 12:43:21,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 12:43:21,162 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 96 [2018-10-04 12:43:21,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:21,163 INFO L225 Difference]: With dead ends: 113 [2018-10-04 12:43:21,163 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 12:43:21,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 13 [2018-10-04 12:43:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 12:43:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 12:43:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 12:43:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2018-10-04 12:43:21,168 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 96 [2018-10-04 12:43:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:21,169 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2018-10-04 12:43:21,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 12:43:21,169 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2018-10-04 12:43:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 12:43:21,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:21,170 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:21,170 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:21,170 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:21,170 INFO L82 PathProgramCache]: Analyzing trace with hash -265025744, now seen corresponding path program 40 times [2018-10-04 12:43:21,170 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:21,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:21,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:21,171 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:21,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:21,884 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:22,244 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:22,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:22,495 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:22,502 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:22,564 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:22,564 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:22,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:24,131 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:24,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 12:43:24,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 12:43:24,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 12:43:24,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:24,132 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 44 states. [2018-10-04 12:43:25,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:25,196 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2018-10-04 12:43:25,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 12:43:25,196 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 98 [2018-10-04 12:43:25,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:25,197 INFO L225 Difference]: With dead ends: 115 [2018-10-04 12:43:25,197 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 12:43:25,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 0.9s impTime 14 [2018-10-04 12:43:25,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 12:43:25,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 12:43:25,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 12:43:25,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2018-10-04 12:43:25,201 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 98 [2018-10-04 12:43:25,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:25,202 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2018-10-04 12:43:25,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 12:43:25,202 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2018-10-04 12:43:25,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 12:43:25,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:25,202 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:25,203 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:25,203 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:25,203 INFO L82 PathProgramCache]: Analyzing trace with hash 320164652, now seen corresponding path program 41 times [2018-10-04 12:43:25,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:25,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:25,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:25,204 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:25,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:25,436 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:25,859 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:26,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:26,300 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 [2018-10-04 12:43:26,307 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:26,411 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-04 12:43:26,411 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:26,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:26,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:26,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 12:43:26,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 12:43:26,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 12:43:26,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:26,740 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand 45 states. [2018-10-04 12:43:26,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:26,842 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2018-10-04 12:43:26,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 12:43:26,842 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 100 [2018-10-04 12:43:26,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:26,843 INFO L225 Difference]: With dead ends: 117 [2018-10-04 12:43:26,844 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 12:43:26,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.8s impTime 15 [2018-10-04 12:43:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 12:43:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 12:43:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 12:43:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2018-10-04 12:43:26,849 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 100 [2018-10-04 12:43:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:26,849 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2018-10-04 12:43:26,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 12:43:26,849 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2018-10-04 12:43:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 12:43:26,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:26,850 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:26,850 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:26,850 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash 47419432, now seen corresponding path program 42 times [2018-10-04 12:43:26,851 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:26,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:26,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:26,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:26,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:27,324 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:27,853 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:28,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:28,018 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 [2018-10-04 12:43:28,026 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:28,126 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 44 check-sat command(s) [2018-10-04 12:43:28,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:28,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:28,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1910 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:28,302 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:28,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 12:43:28,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 12:43:28,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 12:43:28,303 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:28,303 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 46 states. [2018-10-04 12:43:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:28,390 INFO L93 Difference]: Finished difference Result 119 states and 123 transitions. [2018-10-04 12:43:28,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 12:43:28,391 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 102 [2018-10-04 12:43:28,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:28,392 INFO L225 Difference]: With dead ends: 119 [2018-10-04 12:43:28,393 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 12:43:28,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.5s impTime 16 [2018-10-04 12:43:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 12:43:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 12:43:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 12:43:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2018-10-04 12:43:28,399 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 102 [2018-10-04 12:43:28,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:28,399 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2018-10-04 12:43:28,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 12:43:28,400 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2018-10-04 12:43:28,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 12:43:28,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:28,400 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:28,400 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:28,401 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:28,401 INFO L82 PathProgramCache]: Analyzing trace with hash -67731932, now seen corresponding path program 43 times [2018-10-04 12:43:28,401 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:28,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:28,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:28,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:28,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:28,706 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:29,084 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:29,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:29,462 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 [2018-10-04 12:43:29,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:29,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:29,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:29,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 12:43:29,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 12:43:29,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 12:43:29,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:29,727 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 47 states. [2018-10-04 12:43:29,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:29,792 INFO L93 Difference]: Finished difference Result 121 states and 125 transitions. [2018-10-04 12:43:29,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 12:43:29,792 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 104 [2018-10-04 12:43:29,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:29,793 INFO L225 Difference]: With dead ends: 121 [2018-10-04 12:43:29,794 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 12:43:29,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 17 [2018-10-04 12:43:29,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 12:43:29,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 12:43:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 12:43:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2018-10-04 12:43:29,800 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 104 [2018-10-04 12:43:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:29,800 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 109 transitions. [2018-10-04 12:43:29,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 12:43:29,800 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 109 transitions. [2018-10-04 12:43:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 12:43:29,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:29,801 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:29,801 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:29,801 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:29,801 INFO L82 PathProgramCache]: Analyzing trace with hash 940956960, now seen corresponding path program 44 times [2018-10-04 12:43:29,802 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:29,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:29,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:29,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:29,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:30,466 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:30,828 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:31,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:31,239 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 [2018-10-04 12:43:31,248 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:31,324 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:31,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:31,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:31,664 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:31,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 12:43:31,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 12:43:31,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 12:43:31,665 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:31,666 INFO L87 Difference]: Start difference. First operand 107 states and 109 transitions. Second operand 48 states. [2018-10-04 12:43:31,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:31,821 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2018-10-04 12:43:31,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 12:43:31,822 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 106 [2018-10-04 12:43:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:31,823 INFO L225 Difference]: With dead ends: 123 [2018-10-04 12:43:31,823 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 12:43:31,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 18 [2018-10-04 12:43:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 12:43:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 12:43:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 12:43:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 111 transitions. [2018-10-04 12:43:31,828 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 111 transitions. Word has length 106 [2018-10-04 12:43:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:31,829 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 111 transitions. [2018-10-04 12:43:31,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 12:43:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 111 transitions. [2018-10-04 12:43:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 12:43:31,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:31,830 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:31,830 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:31,830 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:31,830 INFO L82 PathProgramCache]: Analyzing trace with hash -371626724, now seen corresponding path program 45 times [2018-10-04 12:43:31,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:31,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:31,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:31,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:31,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:32,314 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:32,742 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:32,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:32,901 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:32,908 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:33,018 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2018-10-04 12:43:33,019 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:33,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:33,224 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:33,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 12:43:33,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 12:43:33,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 12:43:33,225 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:33,225 INFO L87 Difference]: Start difference. First operand 109 states and 111 transitions. Second operand 49 states. [2018-10-04 12:43:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:33,314 INFO L93 Difference]: Finished difference Result 125 states and 129 transitions. [2018-10-04 12:43:33,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 12:43:33,314 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 108 [2018-10-04 12:43:33,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:33,316 INFO L225 Difference]: With dead ends: 125 [2018-10-04 12:43:33,316 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 12:43:33,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 19 [2018-10-04 12:43:33,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 12:43:33,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 12:43:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 12:43:33,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2018-10-04 12:43:33,321 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 108 [2018-10-04 12:43:33,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:33,322 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2018-10-04 12:43:33,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 12:43:33,322 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2018-10-04 12:43:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 12:43:33,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:33,323 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:33,323 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:33,323 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:33,323 INFO L82 PathProgramCache]: Analyzing trace with hash 955837976, now seen corresponding path program 46 times [2018-10-04 12:43:33,323 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:33,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:33,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:33,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:33,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:33,802 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:34,148 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:34,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:34,590 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 [2018-10-04 12:43:34,597 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:34,678 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:34,678 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:34,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:34,875 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:34,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 12:43:34,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 12:43:34,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 12:43:34,876 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:34,876 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand 50 states. [2018-10-04 12:43:35,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:35,002 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2018-10-04 12:43:35,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 12:43:35,002 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 110 [2018-10-04 12:43:35,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:35,003 INFO L225 Difference]: With dead ends: 127 [2018-10-04 12:43:35,003 INFO L226 Difference]: Without dead ends: 113 [2018-10-04 12:43:35,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 20 [2018-10-04 12:43:35,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-04 12:43:35,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-04 12:43:35,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-04 12:43:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2018-10-04 12:43:35,008 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 110 [2018-10-04 12:43:35,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:35,008 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2018-10-04 12:43:35,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 12:43:35,008 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2018-10-04 12:43:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-04 12:43:35,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:35,009 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:35,009 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:35,009 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:35,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1044127764, now seen corresponding path program 47 times [2018-10-04 12:43:35,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:35,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:35,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:35,010 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:35,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:35,272 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:35,447 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:35,740 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:35,740 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 [2018-10-04 12:43:35,747 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:35,864 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-04 12:43:35,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:35,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:36,244 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:36,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 12:43:36,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 12:43:36,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 12:43:36,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:36,245 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 51 states. [2018-10-04 12:43:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:36,346 INFO L93 Difference]: Finished difference Result 129 states and 133 transitions. [2018-10-04 12:43:36,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 12:43:36,348 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 112 [2018-10-04 12:43:36,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:36,349 INFO L225 Difference]: With dead ends: 129 [2018-10-04 12:43:36,349 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 12:43:36,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime 21 [2018-10-04 12:43:36,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 12:43:36,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 12:43:36,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 12:43:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2018-10-04 12:43:36,355 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 112 [2018-10-04 12:43:36,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:36,356 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2018-10-04 12:43:36,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 12:43:36,356 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2018-10-04 12:43:36,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 12:43:36,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:36,357 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:36,357 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:36,357 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:36,357 INFO L82 PathProgramCache]: Analyzing trace with hash -8731888, now seen corresponding path program 48 times [2018-10-04 12:43:36,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:36,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:36,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:36,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:36,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:36,834 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:37,017 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:37,395 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:37,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:37,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:37,406 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 [2018-10-04 12:43:37,415 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:37,531 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 50 check-sat command(s) [2018-10-04 12:43:37,532 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:37,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2468 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:37,741 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:37,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 12:43:37,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 12:43:37,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 12:43:37,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:37,742 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand 52 states. [2018-10-04 12:43:37,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:37,887 INFO L93 Difference]: Finished difference Result 131 states and 135 transitions. [2018-10-04 12:43:37,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 12:43:37,887 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 114 [2018-10-04 12:43:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:37,888 INFO L225 Difference]: With dead ends: 131 [2018-10-04 12:43:37,888 INFO L226 Difference]: Without dead ends: 117 [2018-10-04 12:43:37,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 7 [2018-10-04 12:43:37,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-04 12:43:37,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-04 12:43:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-04 12:43:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2018-10-04 12:43:37,917 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 114 [2018-10-04 12:43:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:37,918 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2018-10-04 12:43:37,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 12:43:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2018-10-04 12:43:37,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-04 12:43:37,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:37,919 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:37,919 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:37,919 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:37,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1805424396, now seen corresponding path program 49 times [2018-10-04 12:43:37,919 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:37,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:37,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:37,920 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:37,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:38,565 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:38,994 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:39,599 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:39,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:39,656 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:39,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:39,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:40,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:40,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 12:43:40,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 12:43:40,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 12:43:40,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:40,071 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand 53 states. [2018-10-04 12:43:40,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:40,202 INFO L93 Difference]: Finished difference Result 133 states and 137 transitions. [2018-10-04 12:43:40,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 12:43:40,203 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 116 [2018-10-04 12:43:40,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:40,204 INFO L225 Difference]: With dead ends: 133 [2018-10-04 12:43:40,204 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 12:43:40,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 8 [2018-10-04 12:43:40,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 12:43:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 12:43:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 12:43:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-10-04 12:43:40,210 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 116 [2018-10-04 12:43:40,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:40,210 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-10-04 12:43:40,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 12:43:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-10-04 12:43:40,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 12:43:40,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:40,211 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:40,212 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:40,212 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:40,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1452891144, now seen corresponding path program 50 times [2018-10-04 12:43:40,212 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:40,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:40,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:40,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:40,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:40,455 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:40,638 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:41,025 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:41,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:41,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:41,136 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:41,211 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:41,211 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:41,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:42,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:42,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 12:43:42,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 12:43:42,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 12:43:42,456 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:42,456 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 54 states. [2018-10-04 12:43:42,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:42,795 INFO L93 Difference]: Finished difference Result 135 states and 139 transitions. [2018-10-04 12:43:42,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 12:43:42,796 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 118 [2018-10-04 12:43:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:42,797 INFO L225 Difference]: With dead ends: 135 [2018-10-04 12:43:42,797 INFO L226 Difference]: Without dead ends: 121 [2018-10-04 12:43:42,797 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 9 [2018-10-04 12:43:42,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-04 12:43:42,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-04 12:43:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-04 12:43:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2018-10-04 12:43:42,801 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 118 [2018-10-04 12:43:42,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:42,802 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2018-10-04 12:43:42,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 12:43:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2018-10-04 12:43:42,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-04 12:43:42,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:42,802 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:42,803 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:42,803 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:42,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1970852356, now seen corresponding path program 51 times [2018-10-04 12:43:42,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:42,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:42,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:42,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:42,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:43,051 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:43,333 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:43,588 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:43,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:43,664 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 [2018-10-04 12:43:43,672 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:43,806 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2018-10-04 12:43:43,806 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:43,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2774 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:44,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:44,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 12:43:44,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 12:43:44,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 12:43:44,048 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:44,048 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand 55 states. [2018-10-04 12:43:44,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:44,207 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2018-10-04 12:43:44,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 12:43:44,207 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 120 [2018-10-04 12:43:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:44,208 INFO L225 Difference]: With dead ends: 137 [2018-10-04 12:43:44,208 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 12:43:44,209 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 10 [2018-10-04 12:43:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 12:43:44,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-04 12:43:44,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-04 12:43:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2018-10-04 12:43:44,214 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 120 [2018-10-04 12:43:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:44,215 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2018-10-04 12:43:44,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 12:43:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2018-10-04 12:43:44,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-04 12:43:44,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:44,216 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:44,216 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:44,216 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:44,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1515370752, now seen corresponding path program 52 times [2018-10-04 12:43:44,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:44,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:44,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:44,217 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:44,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:44,457 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:44,653 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:45,075 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:45,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:45,272 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 [2018-10-04 12:43:45,282 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:45,360 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:45,360 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:45,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2880 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:45,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:45,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 12:43:45,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 12:43:45,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 12:43:45,635 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:45,635 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 56 states. [2018-10-04 12:43:45,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:45,766 INFO L93 Difference]: Finished difference Result 139 states and 143 transitions. [2018-10-04 12:43:45,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 12:43:45,766 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 122 [2018-10-04 12:43:45,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:45,767 INFO L225 Difference]: With dead ends: 139 [2018-10-04 12:43:45,767 INFO L226 Difference]: Without dead ends: 125 [2018-10-04 12:43:45,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 11 [2018-10-04 12:43:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-04 12:43:45,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-04 12:43:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-04 12:43:45,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-10-04 12:43:45,772 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 122 [2018-10-04 12:43:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:45,772 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-10-04 12:43:45,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 12:43:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-10-04 12:43:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-04 12:43:45,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:45,773 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:45,773 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:45,773 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:45,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1884213500, now seen corresponding path program 53 times [2018-10-04 12:43:45,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:45,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:45,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:45,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:45,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:46,007 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:46,395 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:47,303 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:47,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:47,556 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:47,564 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:43:47,694 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-04 12:43:47,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:47,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2988 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:48,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:48,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 12:43:48,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 12:43:48,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 12:43:48,020 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:48,020 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 57 states. [2018-10-04 12:43:48,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:48,165 INFO L93 Difference]: Finished difference Result 141 states and 145 transitions. [2018-10-04 12:43:48,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 12:43:48,165 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 124 [2018-10-04 12:43:48,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:48,166 INFO L225 Difference]: With dead ends: 141 [2018-10-04 12:43:48,166 INFO L226 Difference]: Without dead ends: 127 [2018-10-04 12:43:48,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 12 [2018-10-04 12:43:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-04 12:43:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-04 12:43:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-04 12:43:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 129 transitions. [2018-10-04 12:43:48,172 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 129 transitions. Word has length 124 [2018-10-04 12:43:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:48,172 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 129 transitions. [2018-10-04 12:43:48,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 12:43:48,172 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 129 transitions. [2018-10-04 12:43:48,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-04 12:43:48,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:48,173 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:48,173 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:48,173 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:48,174 INFO L82 PathProgramCache]: Analyzing trace with hash -140191240, now seen corresponding path program 54 times [2018-10-04 12:43:48,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:48,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:48,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:48,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:48,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:48,460 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:48,803 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:49,332 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:49,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:49,597 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:49,605 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:43:49,743 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2018-10-04 12:43:49,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:49,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3098 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:49,963 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:49,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 12:43:49,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 12:43:49,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 12:43:49,964 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:49,964 INFO L87 Difference]: Start difference. First operand 127 states and 129 transitions. Second operand 58 states. [2018-10-04 12:43:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:50,158 INFO L93 Difference]: Finished difference Result 143 states and 147 transitions. [2018-10-04 12:43:50,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 12:43:50,159 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 126 [2018-10-04 12:43:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:50,159 INFO L225 Difference]: With dead ends: 143 [2018-10-04 12:43:50,159 INFO L226 Difference]: Without dead ends: 129 [2018-10-04 12:43:50,159 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 13 [2018-10-04 12:43:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-04 12:43:50,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-04 12:43:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-04 12:43:50,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2018-10-04 12:43:50,164 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 126 [2018-10-04 12:43:50,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:50,164 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2018-10-04 12:43:50,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 12:43:50,164 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2018-10-04 12:43:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-04 12:43:50,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:50,165 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:50,165 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:50,165 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:50,165 INFO L82 PathProgramCache]: Analyzing trace with hash 27038708, now seen corresponding path program 55 times [2018-10-04 12:43:50,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:50,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:50,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:50,166 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:50,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:50,385 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:50,748 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:51,301 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:51,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:51,625 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:51,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:51,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3210 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:52,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:52,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 12:43:52,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 12:43:52,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 12:43:52,203 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:52,203 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand 59 states. [2018-10-04 12:43:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:52,351 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2018-10-04 12:43:52,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 12:43:52,352 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 128 [2018-10-04 12:43:52,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:52,353 INFO L225 Difference]: With dead ends: 145 [2018-10-04 12:43:52,353 INFO L226 Difference]: Without dead ends: 131 [2018-10-04 12:43:52,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 14 [2018-10-04 12:43:52,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-04 12:43:52,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-04 12:43:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-04 12:43:52,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 133 transitions. [2018-10-04 12:43:52,357 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 133 transitions. Word has length 128 [2018-10-04 12:43:52,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:52,357 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 133 transitions. [2018-10-04 12:43:52,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 12:43:52,357 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 133 transitions. [2018-10-04 12:43:52,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-04 12:43:52,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:52,358 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:52,358 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:52,358 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:52,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1821228784, now seen corresponding path program 56 times [2018-10-04 12:43:52,359 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:52,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:52,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:52,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:43:52,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:52,702 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:53,065 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:53,670 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:54,070 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:54,070 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 [2018-10-04 12:43:54,077 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:43:54,162 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:43:54,162 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:54,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3324 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:54,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:54,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 12:43:54,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 12:43:54,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 12:43:54,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:54,380 INFO L87 Difference]: Start difference. First operand 131 states and 133 transitions. Second operand 60 states. [2018-10-04 12:43:54,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:54,539 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2018-10-04 12:43:54,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 12:43:54,540 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 130 [2018-10-04 12:43:54,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:54,540 INFO L225 Difference]: With dead ends: 147 [2018-10-04 12:43:54,540 INFO L226 Difference]: Without dead ends: 133 [2018-10-04 12:43:54,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 15 [2018-10-04 12:43:54,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-04 12:43:54,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-04 12:43:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-04 12:43:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2018-10-04 12:43:54,548 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 130 [2018-10-04 12:43:54,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:54,548 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2018-10-04 12:43:54,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 12:43:54,549 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2018-10-04 12:43:54,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-04 12:43:54,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:54,549 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:54,550 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:54,550 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:54,550 INFO L82 PathProgramCache]: Analyzing trace with hash -538961172, now seen corresponding path program 57 times [2018-10-04 12:43:54,550 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:54,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:54,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:54,551 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:54,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:54,749 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:55,001 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:55,488 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:55,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:55,966 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:43:55,976 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:43:56,130 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2018-10-04 12:43:56,130 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:56,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:56,349 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:56,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 12:43:56,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 12:43:56,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 12:43:56,350 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:56,350 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 61 states. [2018-10-04 12:43:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:56,506 INFO L93 Difference]: Finished difference Result 149 states and 153 transitions. [2018-10-04 12:43:56,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 12:43:56,507 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 132 [2018-10-04 12:43:56,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:56,507 INFO L225 Difference]: With dead ends: 149 [2018-10-04 12:43:56,507 INFO L226 Difference]: Without dead ends: 135 [2018-10-04 12:43:56,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 16 [2018-10-04 12:43:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-04 12:43:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-04 12:43:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-04 12:43:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 137 transitions. [2018-10-04 12:43:56,514 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 137 transitions. Word has length 132 [2018-10-04 12:43:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:56,515 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 137 transitions. [2018-10-04 12:43:56,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 12:43:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 137 transitions. [2018-10-04 12:43:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-04 12:43:56,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:56,516 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:56,516 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:56,516 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:56,516 INFO L82 PathProgramCache]: Analyzing trace with hash -938776600, now seen corresponding path program 58 times [2018-10-04 12:43:56,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:56,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:56,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:56,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:56,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:56,754 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:57,131 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:57,474 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:57,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:57,791 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 [2018-10-04 12:43:57,798 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:43:57,885 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:43:57,885 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:43:57,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:43:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3558 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:58,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:43:58,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 12:43:58,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 12:43:58,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 12:43:58,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:43:58,266 INFO L87 Difference]: Start difference. First operand 135 states and 137 transitions. Second operand 62 states. [2018-10-04 12:43:58,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:43:58,397 INFO L93 Difference]: Finished difference Result 151 states and 155 transitions. [2018-10-04 12:43:58,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 12:43:58,398 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 134 [2018-10-04 12:43:58,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:43:58,398 INFO L225 Difference]: With dead ends: 151 [2018-10-04 12:43:58,398 INFO L226 Difference]: Without dead ends: 137 [2018-10-04 12:43:58,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime 17 [2018-10-04 12:43:58,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-04 12:43:58,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-04 12:43:58,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-04 12:43:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 139 transitions. [2018-10-04 12:43:58,404 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 139 transitions. Word has length 134 [2018-10-04 12:43:58,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:43:58,404 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 139 transitions. [2018-10-04 12:43:58,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 12:43:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 139 transitions. [2018-10-04 12:43:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-04 12:43:58,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:43:58,404 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:43:58,405 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:43:58,405 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:43:58,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1385653732, now seen corresponding path program 59 times [2018-10-04 12:43:58,405 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:43:58,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:43:58,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:58,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:43:58,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:43:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:43:58,602 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:43:58,850 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:59,327 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:43:59,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:43:59,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:43:59,885 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 [2018-10-04 12:43:59,893 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:44:00,039 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-10-04 12:44:00,039 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:00,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3678 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:00,517 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:00,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 12:44:00,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 12:44:00,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 12:44:00,518 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:00,518 INFO L87 Difference]: Start difference. First operand 137 states and 139 transitions. Second operand 63 states. [2018-10-04 12:44:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:00,697 INFO L93 Difference]: Finished difference Result 153 states and 157 transitions. [2018-10-04 12:44:00,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 12:44:00,697 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 136 [2018-10-04 12:44:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:00,698 INFO L225 Difference]: With dead ends: 153 [2018-10-04 12:44:00,698 INFO L226 Difference]: Without dead ends: 139 [2018-10-04 12:44:00,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 18 [2018-10-04 12:44:00,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-04 12:44:00,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-04 12:44:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 12:44:00,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-10-04 12:44:00,704 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 136 [2018-10-04 12:44:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:00,704 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-10-04 12:44:00,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 12:44:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-10-04 12:44:00,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 12:44:00,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:00,705 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:00,705 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:00,705 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:00,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1780208864, now seen corresponding path program 60 times [2018-10-04 12:44:00,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:00,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:00,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:00,706 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:00,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:00,957 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:01,379 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:02,020 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:02,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:02,835 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 [2018-10-04 12:44:02,844 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:44:03,001 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2018-10-04 12:44:03,001 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:03,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3800 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:03,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:03,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 12:44:03,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 12:44:03,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 12:44:03,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:03,231 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 64 states. [2018-10-04 12:44:03,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:03,417 INFO L93 Difference]: Finished difference Result 155 states and 159 transitions. [2018-10-04 12:44:03,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 12:44:03,418 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 138 [2018-10-04 12:44:03,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:03,419 INFO L225 Difference]: With dead ends: 155 [2018-10-04 12:44:03,419 INFO L226 Difference]: Without dead ends: 141 [2018-10-04 12:44:03,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime 19 [2018-10-04 12:44:03,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-04 12:44:03,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-04 12:44:03,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-04 12:44:03,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 143 transitions. [2018-10-04 12:44:03,424 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 143 transitions. Word has length 138 [2018-10-04 12:44:03,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:03,425 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 143 transitions. [2018-10-04 12:44:03,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 12:44:03,425 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 143 transitions. [2018-10-04 12:44:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-04 12:44:03,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:03,426 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:03,426 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:03,426 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:03,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1304398628, now seen corresponding path program 61 times [2018-10-04 12:44:03,427 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:03,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:03,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:03,428 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:03,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:03,630 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:03,986 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:04,529 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:05,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:05,154 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:05,154 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:44:05,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:05,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3924 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:05,488 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:05,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 12:44:05,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 12:44:05,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 12:44:05,489 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:05,489 INFO L87 Difference]: Start difference. First operand 141 states and 143 transitions. Second operand 65 states. [2018-10-04 12:44:05,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:05,672 INFO L93 Difference]: Finished difference Result 157 states and 161 transitions. [2018-10-04 12:44:05,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 12:44:05,672 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 140 [2018-10-04 12:44:05,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:05,673 INFO L225 Difference]: With dead ends: 157 [2018-10-04 12:44:05,673 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 12:44:05,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 20 [2018-10-04 12:44:05,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 12:44:05,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-04 12:44:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-04 12:44:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2018-10-04 12:44:05,677 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 140 [2018-10-04 12:44:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:05,677 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2018-10-04 12:44:05,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 12:44:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2018-10-04 12:44:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-04 12:44:05,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:05,678 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:05,678 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:05,679 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:05,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2084764200, now seen corresponding path program 62 times [2018-10-04 12:44:05,679 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:05,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:05,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:05,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:05,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:05,886 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:06,235 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:06,772 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:07,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:07,638 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 [2018-10-04 12:44:07,646 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:44:07,737 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:44:07,738 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:07,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:07,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:07,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 12:44:07,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 12:44:07,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 12:44:07,977 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:07,977 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 66 states. [2018-10-04 12:44:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:08,502 INFO L93 Difference]: Finished difference Result 159 states and 163 transitions. [2018-10-04 12:44:08,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 12:44:08,502 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 142 [2018-10-04 12:44:08,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:08,503 INFO L225 Difference]: With dead ends: 159 [2018-10-04 12:44:08,503 INFO L226 Difference]: Without dead ends: 145 [2018-10-04 12:44:08,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 21 [2018-10-04 12:44:08,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-04 12:44:08,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-04 12:44:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-04 12:44:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2018-10-04 12:44:08,510 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 142 [2018-10-04 12:44:08,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:08,510 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2018-10-04 12:44:08,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 12:44:08,511 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2018-10-04 12:44:08,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-04 12:44:08,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:08,512 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:08,512 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:08,512 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:08,512 INFO L82 PathProgramCache]: Analyzing trace with hash -396802092, now seen corresponding path program 63 times [2018-10-04 12:44:08,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:08,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:08,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:08,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:08,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:09,022 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:09,413 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:10,026 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:10,822 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:10,822 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 [2018-10-04 12:44:10,830 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:44:11,003 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 65 check-sat command(s) [2018-10-04 12:44:11,004 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:11,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4178 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:11,248 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:11,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 12:44:11,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 12:44:11,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 12:44:11,249 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:11,249 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand 67 states. [2018-10-04 12:44:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:11,458 INFO L93 Difference]: Finished difference Result 161 states and 165 transitions. [2018-10-04 12:44:11,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 12:44:11,458 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 144 [2018-10-04 12:44:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:11,459 INFO L225 Difference]: With dead ends: 161 [2018-10-04 12:44:11,459 INFO L226 Difference]: Without dead ends: 147 [2018-10-04 12:44:11,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime 22 [2018-10-04 12:44:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-04 12:44:11,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-04 12:44:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-04 12:44:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2018-10-04 12:44:11,465 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 144 [2018-10-04 12:44:11,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:11,466 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2018-10-04 12:44:11,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 12:44:11,466 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2018-10-04 12:44:11,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-04 12:44:11,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:11,467 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:11,467 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:11,467 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:11,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1762854192, now seen corresponding path program 64 times [2018-10-04 12:44:11,467 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:11,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:11,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:11,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:11,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:11,732 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:11,942 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:12,640 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:13,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:13,469 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 [2018-10-04 12:44:13,476 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:44:13,567 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:44:13,567 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:13,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4308 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:13,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:13,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 12:44:13,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 12:44:13,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 12:44:13,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:13,899 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 68 states. [2018-10-04 12:44:14,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:14,092 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2018-10-04 12:44:14,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 12:44:14,093 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 146 [2018-10-04 12:44:14,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:14,093 INFO L225 Difference]: With dead ends: 163 [2018-10-04 12:44:14,094 INFO L226 Difference]: Without dead ends: 149 [2018-10-04 12:44:14,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 23 [2018-10-04 12:44:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-04 12:44:14,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-04 12:44:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-04 12:44:14,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2018-10-04 12:44:14,100 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 146 [2018-10-04 12:44:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:14,101 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2018-10-04 12:44:14,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 12:44:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2018-10-04 12:44:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-04 12:44:14,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:14,102 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:14,102 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:14,102 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash -278929716, now seen corresponding path program 65 times [2018-10-04 12:44:14,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:14,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:14,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:14,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:14,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:14,470 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:14,753 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:15,002 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:15,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:15,482 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 [2018-10-04 12:44:15,489 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:44:15,666 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-10-04 12:44:15,666 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:15,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4440 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:15,929 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:15,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 12:44:15,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 12:44:15,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 12:44:15,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:15,930 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand 69 states. [2018-10-04 12:44:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:16,087 INFO L93 Difference]: Finished difference Result 165 states and 169 transitions. [2018-10-04 12:44:16,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 12:44:16,087 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 148 [2018-10-04 12:44:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:16,088 INFO L225 Difference]: With dead ends: 165 [2018-10-04 12:44:16,088 INFO L226 Difference]: Without dead ends: 151 [2018-10-04 12:44:16,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime 24 [2018-10-04 12:44:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-04 12:44:16,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-04 12:44:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-04 12:44:16,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 153 transitions. [2018-10-04 12:44:16,095 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 153 transitions. Word has length 148 [2018-10-04 12:44:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:16,095 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 153 transitions. [2018-10-04 12:44:16,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 12:44:16,096 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 153 transitions. [2018-10-04 12:44:16,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-04 12:44:16,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:16,097 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:16,097 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:16,097 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:16,097 INFO L82 PathProgramCache]: Analyzing trace with hash -156650552, now seen corresponding path program 66 times [2018-10-04 12:44:16,097 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:16,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:16,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:16,098 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:16,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:16,373 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:16,553 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:16,932 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:18,157 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:18,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:18,176 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 [2018-10-04 12:44:18,183 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:44:18,364 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 68 check-sat command(s) [2018-10-04 12:44:18,364 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:18,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4574 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:18,690 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:18,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 12:44:18,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 12:44:18,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 12:44:18,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:18,692 INFO L87 Difference]: Start difference. First operand 151 states and 153 transitions. Second operand 70 states. [2018-10-04 12:44:18,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:18,905 INFO L93 Difference]: Finished difference Result 167 states and 171 transitions. [2018-10-04 12:44:18,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 12:44:18,905 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 150 [2018-10-04 12:44:18,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:18,906 INFO L225 Difference]: With dead ends: 167 [2018-10-04 12:44:18,906 INFO L226 Difference]: Without dead ends: 153 [2018-10-04 12:44:18,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.7s impTime 8 [2018-10-04 12:44:18,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-04 12:44:18,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-04 12:44:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-04 12:44:18,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2018-10-04 12:44:18,911 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 150 [2018-10-04 12:44:18,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:18,911 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2018-10-04 12:44:18,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 12:44:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2018-10-04 12:44:18,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-04 12:44:18,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:18,912 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:18,912 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:18,912 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:18,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1389509060, now seen corresponding path program 67 times [2018-10-04 12:44:18,912 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:18,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:18,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:18,913 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:18,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:19,191 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:19,703 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:20,302 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:21,284 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:21,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:21,363 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:44:21,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:21,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4710 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:21,726 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:21,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 12:44:21,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 12:44:21,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 12:44:21,727 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:21,727 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 71 states. [2018-10-04 12:44:21,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:21,958 INFO L93 Difference]: Finished difference Result 169 states and 173 transitions. [2018-10-04 12:44:21,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 12:44:21,958 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 152 [2018-10-04 12:44:21,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:21,959 INFO L225 Difference]: With dead ends: 169 [2018-10-04 12:44:21,959 INFO L226 Difference]: Without dead ends: 155 [2018-10-04 12:44:21,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime 9 [2018-10-04 12:44:21,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-04 12:44:21,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-04 12:44:21,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-04 12:44:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 157 transitions. [2018-10-04 12:44:21,965 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 157 transitions. Word has length 152 [2018-10-04 12:44:21,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:21,966 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 157 transitions. [2018-10-04 12:44:21,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 12:44:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 157 transitions. [2018-10-04 12:44:21,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-04 12:44:21,966 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:21,966 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:21,967 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:21,967 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:21,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1190211776, now seen corresponding path program 68 times [2018-10-04 12:44:21,967 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:21,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:21,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:21,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:21,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:22,222 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:22,410 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:23,078 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:23,799 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:23,911 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:23,911 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 [2018-10-04 12:44:23,918 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:44:24,018 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:44:24,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:24,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4848 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:24,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:24,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 12:44:24,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 12:44:24,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 12:44:24,541 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:24,541 INFO L87 Difference]: Start difference. First operand 155 states and 157 transitions. Second operand 72 states. [2018-10-04 12:44:24,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:24,896 INFO L93 Difference]: Finished difference Result 171 states and 175 transitions. [2018-10-04 12:44:24,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 12:44:24,897 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 154 [2018-10-04 12:44:24,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:24,897 INFO L225 Difference]: With dead ends: 171 [2018-10-04 12:44:24,897 INFO L226 Difference]: Without dead ends: 157 [2018-10-04 12:44:24,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.6s impTime 10 [2018-10-04 12:44:24,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-04 12:44:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-04 12:44:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-04 12:44:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 159 transitions. [2018-10-04 12:44:24,902 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 159 transitions. Word has length 154 [2018-10-04 12:44:24,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:24,903 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 159 transitions. [2018-10-04 12:44:24,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 12:44:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 159 transitions. [2018-10-04 12:44:24,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-04 12:44:24,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:24,903 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:24,904 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:24,904 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:24,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1355917124, now seen corresponding path program 69 times [2018-10-04 12:44:24,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:24,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:24,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:24,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:24,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:25,152 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:25,356 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:25,694 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:26,357 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:26,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:26,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:44:26,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:44:26,708 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2018-10-04 12:44:26,708 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:26,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4988 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:26,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:26,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 12:44:26,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 12:44:26,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 12:44:26,975 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:26,975 INFO L87 Difference]: Start difference. First operand 157 states and 159 transitions. Second operand 73 states. [2018-10-04 12:44:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:27,171 INFO L93 Difference]: Finished difference Result 173 states and 177 transitions. [2018-10-04 12:44:27,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 12:44:27,171 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 156 [2018-10-04 12:44:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:27,172 INFO L225 Difference]: With dead ends: 173 [2018-10-04 12:44:27,172 INFO L226 Difference]: Without dead ends: 159 [2018-10-04 12:44:27,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 11 [2018-10-04 12:44:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-04 12:44:27,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-04 12:44:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-04 12:44:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2018-10-04 12:44:27,177 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 156 [2018-10-04 12:44:27,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:27,178 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2018-10-04 12:44:27,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 12:44:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2018-10-04 12:44:27,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-04 12:44:27,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:27,179 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:27,179 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:27,179 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:27,179 INFO L82 PathProgramCache]: Analyzing trace with hash -54431304, now seen corresponding path program 70 times [2018-10-04 12:44:27,179 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:27,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:27,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:27,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:27,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:27,397 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:28,027 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:28,558 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:29,457 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:29,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:29,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:29,705 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:44:29,712 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:44:29,812 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:44:29,812 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:29,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:30,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:30,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 12:44:30,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 12:44:30,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 12:44:30,097 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:30,097 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 74 states. [2018-10-04 12:44:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:30,334 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2018-10-04 12:44:30,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 12:44:30,334 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 158 [2018-10-04 12:44:30,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:30,335 INFO L225 Difference]: With dead ends: 175 [2018-10-04 12:44:30,336 INFO L226 Difference]: Without dead ends: 161 [2018-10-04 12:44:30,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.1s impTime 12 [2018-10-04 12:44:30,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-04 12:44:30,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-04 12:44:30,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-04 12:44:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-10-04 12:44:30,342 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 158 [2018-10-04 12:44:30,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:30,343 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-10-04 12:44:30,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 12:44:30,343 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-10-04 12:44:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-04 12:44:30,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:30,344 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:30,344 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:30,344 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:30,344 INFO L82 PathProgramCache]: Analyzing trace with hash 837958580, now seen corresponding path program 71 times [2018-10-04 12:44:30,344 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:30,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:30,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:30,345 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:30,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:30,611 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:31,017 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:31,312 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:32,296 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:32,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:32,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:32,630 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 [2018-10-04 12:44:32,637 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:44:32,839 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-10-04 12:44:32,839 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:32,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5274 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:33,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:33,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 12:44:33,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 12:44:33,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 12:44:33,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:33,266 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 75 states. [2018-10-04 12:44:33,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:33,511 INFO L93 Difference]: Finished difference Result 177 states and 181 transitions. [2018-10-04 12:44:33,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 12:44:33,511 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 160 [2018-10-04 12:44:33,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:33,512 INFO L225 Difference]: With dead ends: 177 [2018-10-04 12:44:33,512 INFO L226 Difference]: Without dead ends: 163 [2018-10-04 12:44:33,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.9s impTime 13 [2018-10-04 12:44:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-04 12:44:33,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-04 12:44:33,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-04 12:44:33,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2018-10-04 12:44:33,523 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 160 [2018-10-04 12:44:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:33,523 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2018-10-04 12:44:33,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 12:44:33,524 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2018-10-04 12:44:33,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-04 12:44:33,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:33,525 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:33,525 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:33,525 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:33,525 INFO L82 PathProgramCache]: Analyzing trace with hash -568822096, now seen corresponding path program 72 times [2018-10-04 12:44:33,525 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:33,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:33,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:33,526 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:33,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:33,796 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:34,160 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:34,763 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:34,988 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:35,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:35,132 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:44:35,140 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:44:35,358 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 74 check-sat command(s) [2018-10-04 12:44:35,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:35,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 5420 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:35,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:35,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 12:44:35,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 12:44:35,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 12:44:35,626 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:35,626 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 76 states. [2018-10-04 12:44:35,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:35,806 INFO L93 Difference]: Finished difference Result 179 states and 183 transitions. [2018-10-04 12:44:35,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 12:44:35,807 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 162 [2018-10-04 12:44:35,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:35,808 INFO L225 Difference]: With dead ends: 179 [2018-10-04 12:44:35,808 INFO L226 Difference]: Without dead ends: 165 [2018-10-04 12:44:35,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 14 [2018-10-04 12:44:35,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-04 12:44:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-04 12:44:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-04 12:44:35,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 167 transitions. [2018-10-04 12:44:35,816 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 167 transitions. Word has length 162 [2018-10-04 12:44:35,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:35,817 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 167 transitions. [2018-10-04 12:44:35,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 12:44:35,817 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 167 transitions. [2018-10-04 12:44:35,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-04 12:44:35,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:35,818 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:35,818 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:35,818 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:35,818 INFO L82 PathProgramCache]: Analyzing trace with hash 429646508, now seen corresponding path program 73 times [2018-10-04 12:44:35,818 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:35,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:35,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:35,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:35,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:36,074 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:36,452 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:36,985 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:38,271 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:38,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:38,735 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 [2018-10-04 12:44:38,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:38,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5568 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:39,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:39,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 12:44:39,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 12:44:39,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 12:44:39,196 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:39,196 INFO L87 Difference]: Start difference. First operand 165 states and 167 transitions. Second operand 77 states. [2018-10-04 12:44:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:39,470 INFO L93 Difference]: Finished difference Result 181 states and 185 transitions. [2018-10-04 12:44:39,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 12:44:39,471 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 164 [2018-10-04 12:44:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:39,471 INFO L225 Difference]: With dead ends: 181 [2018-10-04 12:44:39,471 INFO L226 Difference]: Without dead ends: 167 [2018-10-04 12:44:39,472 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 15 [2018-10-04 12:44:39,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-04 12:44:39,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-04 12:44:39,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-04 12:44:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-10-04 12:44:39,477 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 164 [2018-10-04 12:44:39,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:39,477 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-10-04 12:44:39,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 12:44:39,477 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-10-04 12:44:39,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-04 12:44:39,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:39,478 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:39,478 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:39,478 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:39,478 INFO L82 PathProgramCache]: Analyzing trace with hash -2114699352, now seen corresponding path program 74 times [2018-10-04 12:44:39,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:39,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:39,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:39,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:39,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:39,735 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:39,922 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:40,246 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:40,901 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:41,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:41,296 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 [2018-10-04 12:44:41,302 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:44:41,408 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:44:41,408 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:41,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5718 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:41,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:41,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 12:44:41,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 12:44:41,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 12:44:41,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:41,677 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 78 states. [2018-10-04 12:44:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:41,899 INFO L93 Difference]: Finished difference Result 183 states and 187 transitions. [2018-10-04 12:44:41,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 12:44:41,899 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 166 [2018-10-04 12:44:41,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:41,900 INFO L225 Difference]: With dead ends: 183 [2018-10-04 12:44:41,900 INFO L226 Difference]: Without dead ends: 169 [2018-10-04 12:44:41,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 16 [2018-10-04 12:44:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-04 12:44:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-04 12:44:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-04 12:44:41,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2018-10-04 12:44:41,906 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 166 [2018-10-04 12:44:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:41,907 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2018-10-04 12:44:41,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 12:44:41,907 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2018-10-04 12:44:41,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-04 12:44:41,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:41,907 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:41,908 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:41,908 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:41,908 INFO L82 PathProgramCache]: Analyzing trace with hash 900287908, now seen corresponding path program 75 times [2018-10-04 12:44:41,908 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:41,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:41,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:41,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:41,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:42,121 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:42,495 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:42,924 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:43,513 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:43,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:43,768 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:44:43,774 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:44:43,998 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 77 check-sat command(s) [2018-10-04 12:44:43,998 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:44,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5870 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:44,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:44,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 12:44:44,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 12:44:44,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 12:44:44,273 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:44,273 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand 79 states. [2018-10-04 12:44:44,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:44,449 INFO L93 Difference]: Finished difference Result 185 states and 189 transitions. [2018-10-04 12:44:44,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 12:44:44,449 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 168 [2018-10-04 12:44:44,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:44,450 INFO L225 Difference]: With dead ends: 185 [2018-10-04 12:44:44,450 INFO L226 Difference]: Without dead ends: 171 [2018-10-04 12:44:44,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 17 [2018-10-04 12:44:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-04 12:44:44,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-04 12:44:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-04 12:44:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 173 transitions. [2018-10-04 12:44:44,456 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 173 transitions. Word has length 168 [2018-10-04 12:44:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:44,456 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 173 transitions. [2018-10-04 12:44:44,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 12:44:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 173 transitions. [2018-10-04 12:44:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-04 12:44:44,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:44,457 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:44,457 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:44,457 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:44,457 INFO L82 PathProgramCache]: Analyzing trace with hash -799880032, now seen corresponding path program 76 times [2018-10-04 12:44:44,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:44,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:44,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:44,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:44,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:44,713 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:45,070 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:45,680 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:45,896 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:46,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:46,137 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:44:46,145 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:44:46,256 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:44:46,256 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:46,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6024 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:46,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:46,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 12:44:46,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 12:44:46,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 12:44:46,534 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:46,534 INFO L87 Difference]: Start difference. First operand 171 states and 173 transitions. Second operand 80 states. [2018-10-04 12:44:46,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:46,707 INFO L93 Difference]: Finished difference Result 187 states and 191 transitions. [2018-10-04 12:44:46,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 12:44:46,707 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 170 [2018-10-04 12:44:46,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:46,708 INFO L225 Difference]: With dead ends: 187 [2018-10-04 12:44:46,708 INFO L226 Difference]: Without dead ends: 173 [2018-10-04 12:44:46,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 18 [2018-10-04 12:44:46,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-04 12:44:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-04 12:44:46,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-04 12:44:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2018-10-04 12:44:46,716 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 170 [2018-10-04 12:44:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:46,716 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2018-10-04 12:44:46,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 12:44:46,716 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2018-10-04 12:44:46,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-04 12:44:46,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:46,717 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:46,718 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:46,718 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:46,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1721269404, now seen corresponding path program 77 times [2018-10-04 12:44:46,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:46,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:46,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:46,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:46,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:47,003 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:47,237 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:47,368 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:47,630 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:47,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:47,852 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 [2018-10-04 12:44:47,860 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:44:48,075 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 79 check-sat command(s) [2018-10-04 12:44:48,075 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:48,079 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6180 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:48,598 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:48,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 12:44:48,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 12:44:48,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 12:44:48,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:48,599 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 81 states. [2018-10-04 12:44:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:48,771 INFO L93 Difference]: Finished difference Result 189 states and 193 transitions. [2018-10-04 12:44:48,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 12:44:48,771 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 172 [2018-10-04 12:44:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:48,772 INFO L225 Difference]: With dead ends: 189 [2018-10-04 12:44:48,772 INFO L226 Difference]: Without dead ends: 175 [2018-10-04 12:44:48,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.7s impTime 19 [2018-10-04 12:44:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-04 12:44:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-04 12:44:48,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-04 12:44:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 177 transitions. [2018-10-04 12:44:48,780 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 177 transitions. Word has length 172 [2018-10-04 12:44:48,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:48,780 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 177 transitions. [2018-10-04 12:44:48,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 12:44:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 177 transitions. [2018-10-04 12:44:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-04 12:44:48,781 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:48,781 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:48,781 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:48,782 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:48,782 INFO L82 PathProgramCache]: Analyzing trace with hash -2110644840, now seen corresponding path program 78 times [2018-10-04 12:44:48,782 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:48,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:48,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:48,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:48,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:48,991 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:49,213 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:49,505 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:49,996 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:50,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:50,398 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 [2018-10-04 12:44:50,406 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:44:50,633 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 80 check-sat command(s) [2018-10-04 12:44:50,634 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:50,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6338 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:50,928 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:50,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 12:44:50,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 12:44:50,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 12:44:50,929 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:50,929 INFO L87 Difference]: Start difference. First operand 175 states and 177 transitions. Second operand 82 states. [2018-10-04 12:44:51,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:51,180 INFO L93 Difference]: Finished difference Result 191 states and 195 transitions. [2018-10-04 12:44:51,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 12:44:51,181 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 174 [2018-10-04 12:44:51,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:51,181 INFO L225 Difference]: With dead ends: 191 [2018-10-04 12:44:51,182 INFO L226 Difference]: Without dead ends: 177 [2018-10-04 12:44:51,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 20 [2018-10-04 12:44:51,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-04 12:44:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-04 12:44:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-04 12:44:51,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2018-10-04 12:44:51,187 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 174 [2018-10-04 12:44:51,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:51,187 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2018-10-04 12:44:51,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 12:44:51,187 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2018-10-04 12:44:51,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-04 12:44:51,188 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:51,188 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:51,188 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:51,188 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:51,189 INFO L82 PathProgramCache]: Analyzing trace with hash 501706644, now seen corresponding path program 79 times [2018-10-04 12:44:51,189 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:51,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:51,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:51,190 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:51,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:51,444 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:51,564 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:51,813 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:52,376 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:52,850 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:52,850 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:44:52,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:52,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6498 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:53,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:53,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 12:44:53,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 12:44:53,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 12:44:53,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:53,384 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand 83 states. [2018-10-04 12:44:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:53,682 INFO L93 Difference]: Finished difference Result 193 states and 197 transitions. [2018-10-04 12:44:53,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 12:44:53,683 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 176 [2018-10-04 12:44:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:53,683 INFO L225 Difference]: With dead ends: 193 [2018-10-04 12:44:53,683 INFO L226 Difference]: Without dead ends: 179 [2018-10-04 12:44:53,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 21 [2018-10-04 12:44:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-04 12:44:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-04 12:44:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-04 12:44:53,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 181 transitions. [2018-10-04 12:44:53,689 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 181 transitions. Word has length 176 [2018-10-04 12:44:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:53,689 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 181 transitions. [2018-10-04 12:44:53,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 12:44:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 181 transitions. [2018-10-04 12:44:53,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-04 12:44:53,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:53,690 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:53,690 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:53,690 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:53,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1584385392, now seen corresponding path program 80 times [2018-10-04 12:44:53,690 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:53,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:53,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:53,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:44:53,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:53,927 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:54,057 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:54,302 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:55,047 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:55,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:55,397 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:44:55,404 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:44:55,521 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:44:55,522 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:55,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6660 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:55,809 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:55,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 12:44:55,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 12:44:55,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 12:44:55,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:55,811 INFO L87 Difference]: Start difference. First operand 179 states and 181 transitions. Second operand 84 states. [2018-10-04 12:44:56,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:56,045 INFO L93 Difference]: Finished difference Result 195 states and 199 transitions. [2018-10-04 12:44:56,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 12:44:56,046 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 178 [2018-10-04 12:44:56,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:56,046 INFO L225 Difference]: With dead ends: 195 [2018-10-04 12:44:56,046 INFO L226 Difference]: Without dead ends: 181 [2018-10-04 12:44:56,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 0.9s impTime 19 [2018-10-04 12:44:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-04 12:44:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-04 12:44:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-04 12:44:56,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2018-10-04 12:44:56,053 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 178 [2018-10-04 12:44:56,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:56,053 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2018-10-04 12:44:56,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 12:44:56,053 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2018-10-04 12:44:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-04 12:44:56,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:56,054 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:56,054 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:56,054 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:56,054 INFO L82 PathProgramCache]: Analyzing trace with hash -569104756, now seen corresponding path program 81 times [2018-10-04 12:44:56,055 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:56,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:56,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:56,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:56,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:56,276 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:56,520 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:56,867 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:57,232 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:44:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:57,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:44:57,390 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:44:57,399 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:44:57,653 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 83 check-sat command(s) [2018-10-04 12:44:57,653 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:44:57,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:44:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:44:58,040 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:44:58,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 12:44:58,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 12:44:58,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 12:44:58,041 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:44:58,041 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 85 states. [2018-10-04 12:44:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:44:58,211 INFO L93 Difference]: Finished difference Result 197 states and 201 transitions. [2018-10-04 12:44:58,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 12:44:58,211 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 180 [2018-10-04 12:44:58,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:44:58,212 INFO L225 Difference]: With dead ends: 197 [2018-10-04 12:44:58,212 INFO L226 Difference]: Without dead ends: 183 [2018-10-04 12:44:58,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.9s impTime 22 [2018-10-04 12:44:58,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-04 12:44:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-04 12:44:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-04 12:44:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2018-10-04 12:44:58,219 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 180 [2018-10-04 12:44:58,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:44:58,219 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2018-10-04 12:44:58,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 12:44:58,219 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2018-10-04 12:44:58,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-04 12:44:58,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:44:58,220 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:44:58,221 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:44:58,221 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:44:58,221 INFO L82 PathProgramCache]: Analyzing trace with hash 158010248, now seen corresponding path program 82 times [2018-10-04 12:44:58,221 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:44:58,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:44:58,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:58,222 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:44:58,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:44:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:44:58,618 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:44:58,802 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:59,023 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:44:59,545 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:00,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:00,120 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:45:00,127 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:45:00,245 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:45:00,245 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:00,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6990 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:00,545 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:00,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 12:45:00,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 12:45:00,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 12:45:00,547 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:00,547 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand 86 states. [2018-10-04 12:45:00,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:00,844 INFO L93 Difference]: Finished difference Result 199 states and 203 transitions. [2018-10-04 12:45:00,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 12:45:00,844 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 182 [2018-10-04 12:45:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:00,845 INFO L225 Difference]: With dead ends: 199 [2018-10-04 12:45:00,845 INFO L226 Difference]: Without dead ends: 185 [2018-10-04 12:45:00,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 24 [2018-10-04 12:45:00,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-04 12:45:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-04 12:45:00,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-04 12:45:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 187 transitions. [2018-10-04 12:45:00,853 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 187 transitions. Word has length 182 [2018-10-04 12:45:00,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:00,853 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 187 transitions. [2018-10-04 12:45:00,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 12:45:00,853 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 187 transitions. [2018-10-04 12:45:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-04 12:45:00,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:00,854 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:00,854 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:00,854 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:00,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1164140156, now seen corresponding path program 83 times [2018-10-04 12:45:00,855 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:00,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:00,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:00,855 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:00,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:01,113 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:01,278 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:01,466 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:02,010 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:02,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:02,626 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 [2018-10-04 12:45:02,634 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:45:02,878 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 85 check-sat command(s) [2018-10-04 12:45:02,878 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:02,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7158 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:03,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:03,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 12:45:03,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 12:45:03,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 12:45:03,187 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:03,187 INFO L87 Difference]: Start difference. First operand 185 states and 187 transitions. Second operand 87 states. [2018-10-04 12:45:03,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:03,510 INFO L93 Difference]: Finished difference Result 201 states and 205 transitions. [2018-10-04 12:45:03,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 12:45:03,511 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 184 [2018-10-04 12:45:03,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:03,511 INFO L225 Difference]: With dead ends: 201 [2018-10-04 12:45:03,511 INFO L226 Difference]: Without dead ends: 187 [2018-10-04 12:45:03,512 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 24 [2018-10-04 12:45:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-04 12:45:03,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-04 12:45:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-04 12:45:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 189 transitions. [2018-10-04 12:45:03,519 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 189 transitions. Word has length 184 [2018-10-04 12:45:03,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:03,519 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 189 transitions. [2018-10-04 12:45:03,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 12:45:03,519 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 189 transitions. [2018-10-04 12:45:03,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-04 12:45:03,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:03,520 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:03,520 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:03,521 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:03,521 INFO L82 PathProgramCache]: Analyzing trace with hash -440358784, now seen corresponding path program 84 times [2018-10-04 12:45:03,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:03,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:03,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:03,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:03,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:03,819 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:03,949 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:04,230 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:04,774 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:05,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:05,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:45:05,232 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:45:05,487 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 86 check-sat command(s) [2018-10-04 12:45:05,487 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:05,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7328 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:05,811 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:05,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 12:45:05,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 12:45:05,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 12:45:05,812 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:05,812 INFO L87 Difference]: Start difference. First operand 187 states and 189 transitions. Second operand 88 states. [2018-10-04 12:45:06,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:06,040 INFO L93 Difference]: Finished difference Result 203 states and 207 transitions. [2018-10-04 12:45:06,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 12:45:06,041 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 186 [2018-10-04 12:45:06,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:06,042 INFO L225 Difference]: With dead ends: 203 [2018-10-04 12:45:06,042 INFO L226 Difference]: Without dead ends: 189 [2018-10-04 12:45:06,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 23 [2018-10-04 12:45:06,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-04 12:45:06,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-04 12:45:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-04 12:45:06,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 191 transitions. [2018-10-04 12:45:06,047 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 191 transitions. Word has length 186 [2018-10-04 12:45:06,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:06,047 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 191 transitions. [2018-10-04 12:45:06,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 12:45:06,048 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 191 transitions. [2018-10-04 12:45:06,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-04 12:45:06,048 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:06,049 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:06,049 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:06,049 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:06,049 INFO L82 PathProgramCache]: Analyzing trace with hash -671162244, now seen corresponding path program 85 times [2018-10-04 12:45:06,049 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:06,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:06,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:06,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:06,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:06,268 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:06,494 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:06,827 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:07,024 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:07,285 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:07,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:07,349 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 [2018-10-04 12:45:07,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:07,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:07,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:07,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 12:45:07,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 12:45:07,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 12:45:07,784 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:07,784 INFO L87 Difference]: Start difference. First operand 189 states and 191 transitions. Second operand 89 states. [2018-10-04 12:45:07,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:07,981 INFO L93 Difference]: Finished difference Result 205 states and 209 transitions. [2018-10-04 12:45:07,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 12:45:07,981 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 188 [2018-10-04 12:45:07,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:07,982 INFO L225 Difference]: With dead ends: 205 [2018-10-04 12:45:07,982 INFO L226 Difference]: Without dead ends: 191 [2018-10-04 12:45:07,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.8s impTime 9 [2018-10-04 12:45:07,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-04 12:45:07,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-04 12:45:07,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-04 12:45:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 193 transitions. [2018-10-04 12:45:07,990 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 193 transitions. Word has length 188 [2018-10-04 12:45:07,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:07,990 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 193 transitions. [2018-10-04 12:45:07,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 12:45:07,990 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 193 transitions. [2018-10-04 12:45:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-04 12:45:07,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:07,991 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:07,992 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:07,992 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:07,992 INFO L82 PathProgramCache]: Analyzing trace with hash 865012088, now seen corresponding path program 86 times [2018-10-04 12:45:07,992 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:07,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:07,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:07,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:07,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:08,181 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:08,378 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:08,940 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:09,439 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:10,031 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:10,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:10,168 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 [2018-10-04 12:45:10,176 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:45:10,296 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:45:10,296 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:10,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7674 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:10,606 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:10,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 12:45:10,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 12:45:10,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 12:45:10,608 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:10,608 INFO L87 Difference]: Start difference. First operand 191 states and 193 transitions. Second operand 90 states. [2018-10-04 12:45:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:10,914 INFO L93 Difference]: Finished difference Result 207 states and 211 transitions. [2018-10-04 12:45:10,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 12:45:10,915 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 190 [2018-10-04 12:45:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:10,915 INFO L225 Difference]: With dead ends: 207 [2018-10-04 12:45:10,915 INFO L226 Difference]: Without dead ends: 193 [2018-10-04 12:45:10,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime 11 [2018-10-04 12:45:10,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-04 12:45:10,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-04 12:45:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-04 12:45:10,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2018-10-04 12:45:10,921 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 190 [2018-10-04 12:45:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:10,922 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2018-10-04 12:45:10,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 12:45:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2018-10-04 12:45:10,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-04 12:45:10,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:10,922 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:10,923 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:10,923 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:10,923 INFO L82 PathProgramCache]: Analyzing trace with hash -340204684, now seen corresponding path program 87 times [2018-10-04 12:45:10,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:10,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:10,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:10,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:10,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:11,133 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:11,337 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:11,642 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:12,174 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:12,353 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:12,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:12,427 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 [2018-10-04 12:45:12,449 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:45:12,734 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 89 check-sat command(s) [2018-10-04 12:45:12,734 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:12,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7850 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:13,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:13,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 12:45:13,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 12:45:13,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 12:45:13,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:13,059 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 91 states. [2018-10-04 12:45:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:13,272 INFO L93 Difference]: Finished difference Result 209 states and 213 transitions. [2018-10-04 12:45:13,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 12:45:13,273 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 192 [2018-10-04 12:45:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:13,274 INFO L225 Difference]: With dead ends: 209 [2018-10-04 12:45:13,274 INFO L226 Difference]: Without dead ends: 195 [2018-10-04 12:45:13,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 11 [2018-10-04 12:45:13,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-04 12:45:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-04 12:45:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-04 12:45:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 197 transitions. [2018-10-04 12:45:13,280 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 197 transitions. Word has length 192 [2018-10-04 12:45:13,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:13,280 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 197 transitions. [2018-10-04 12:45:13,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 12:45:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 197 transitions. [2018-10-04 12:45:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-04 12:45:13,281 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:13,282 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:13,282 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:13,282 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:13,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1087647344, now seen corresponding path program 88 times [2018-10-04 12:45:13,282 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:13,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:13,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:13,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:13,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:13,563 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:14,061 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:14,418 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:14,957 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:15,644 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:15,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:15,756 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 [2018-10-04 12:45:15,765 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:45:15,889 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:45:15,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:15,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8028 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:16,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:16,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 12:45:16,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 12:45:16,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 12:45:16,220 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:16,220 INFO L87 Difference]: Start difference. First operand 195 states and 197 transitions. Second operand 92 states. [2018-10-04 12:45:16,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:16,535 INFO L93 Difference]: Finished difference Result 211 states and 215 transitions. [2018-10-04 12:45:16,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 12:45:16,536 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 194 [2018-10-04 12:45:16,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:16,537 INFO L225 Difference]: With dead ends: 211 [2018-10-04 12:45:16,537 INFO L226 Difference]: Without dead ends: 197 [2018-10-04 12:45:16,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.9s impTime 10 [2018-10-04 12:45:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-04 12:45:16,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-04 12:45:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-04 12:45:16,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 199 transitions. [2018-10-04 12:45:16,543 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 199 transitions. Word has length 194 [2018-10-04 12:45:16,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:16,543 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 199 transitions. [2018-10-04 12:45:16,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 12:45:16,543 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 199 transitions. [2018-10-04 12:45:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-04 12:45:16,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:16,544 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:16,544 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:16,544 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:16,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1136088468, now seen corresponding path program 89 times [2018-10-04 12:45:16,545 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:16,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:16,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:16,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:16,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:16,750 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:16,901 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:17,150 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:17,580 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:18,122 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:18,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:18,358 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 [2018-10-04 12:45:18,367 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:45:18,642 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 91 check-sat command(s) [2018-10-04 12:45:18,642 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:18,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:19,232 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:19,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 12:45:19,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 12:45:19,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 12:45:19,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:19,234 INFO L87 Difference]: Start difference. First operand 197 states and 199 transitions. Second operand 93 states. [2018-10-04 12:45:19,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:19,559 INFO L93 Difference]: Finished difference Result 213 states and 217 transitions. [2018-10-04 12:45:19,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 12:45:19,559 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 196 [2018-10-04 12:45:19,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:19,560 INFO L225 Difference]: With dead ends: 213 [2018-10-04 12:45:19,560 INFO L226 Difference]: Without dead ends: 199 [2018-10-04 12:45:19,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.3s impTime 14 [2018-10-04 12:45:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-04 12:45:19,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-04 12:45:19,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-04 12:45:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2018-10-04 12:45:19,565 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 196 [2018-10-04 12:45:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:19,566 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2018-10-04 12:45:19,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 12:45:19,566 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2018-10-04 12:45:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-04 12:45:19,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:19,566 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:19,567 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:19,567 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:19,567 INFO L82 PathProgramCache]: Analyzing trace with hash 747509608, now seen corresponding path program 90 times [2018-10-04 12:45:19,567 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:19,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:19,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:19,568 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:19,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:19,809 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:19,926 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:20,117 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:20,480 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:20,958 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:21,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:21,204 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 [2018-10-04 12:45:21,210 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:45:21,496 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 92 check-sat command(s) [2018-10-04 12:45:21,497 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:21,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8390 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:21,821 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:21,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 12:45:21,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 12:45:21,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 12:45:21,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:21,822 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand 94 states. [2018-10-04 12:45:22,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:22,138 INFO L93 Difference]: Finished difference Result 215 states and 219 transitions. [2018-10-04 12:45:22,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 12:45:22,138 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 198 [2018-10-04 12:45:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:22,139 INFO L225 Difference]: With dead ends: 215 [2018-10-04 12:45:22,139 INFO L226 Difference]: Without dead ends: 201 [2018-10-04 12:45:22,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.1s impTime 15 [2018-10-04 12:45:22,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-04 12:45:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-04 12:45:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-04 12:45:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 203 transitions. [2018-10-04 12:45:22,145 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 203 transitions. Word has length 198 [2018-10-04 12:45:22,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:22,145 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 203 transitions. [2018-10-04 12:45:22,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 12:45:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 203 transitions. [2018-10-04 12:45:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-04 12:45:22,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:22,146 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:22,146 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:22,146 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:22,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938268, now seen corresponding path program 91 times [2018-10-04 12:45:22,146 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:22,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:22,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:22,147 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:22,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:22,356 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:22,507 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:22,758 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:23,209 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:23,753 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:24,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:24,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:45:24,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:24,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 8574 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:24,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:24,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 12:45:24,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 12:45:24,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 12:45:24,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:24,821 INFO L87 Difference]: Start difference. First operand 201 states and 203 transitions. Second operand 95 states. [2018-10-04 12:45:25,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:25,164 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2018-10-04 12:45:25,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 12:45:25,165 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 200 [2018-10-04 12:45:25,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:25,165 INFO L225 Difference]: With dead ends: 217 [2018-10-04 12:45:25,165 INFO L226 Difference]: Without dead ends: 203 [2018-10-04 12:45:25,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime 16 [2018-10-04 12:45:25,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-04 12:45:25,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-04 12:45:25,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-04 12:45:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2018-10-04 12:45:25,171 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 200 [2018-10-04 12:45:25,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:25,171 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2018-10-04 12:45:25,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 12:45:25,172 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2018-10-04 12:45:25,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-04 12:45:25,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:25,172 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:25,172 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:25,173 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:25,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1723516000, now seen corresponding path program 92 times [2018-10-04 12:45:25,173 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:25,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:25,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:25,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:25,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:25,419 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:25,641 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:26,004 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:26,572 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:27,267 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:27,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:27,543 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 [2018-10-04 12:45:27,552 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:45:27,683 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:45:27,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:27,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 8760 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:28,021 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:28,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 12:45:28,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 12:45:28,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 12:45:28,023 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:28,023 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 96 states. [2018-10-04 12:45:28,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:28,412 INFO L93 Difference]: Finished difference Result 219 states and 223 transitions. [2018-10-04 12:45:28,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 12:45:28,412 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 202 [2018-10-04 12:45:28,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:28,413 INFO L225 Difference]: With dead ends: 219 [2018-10-04 12:45:28,413 INFO L226 Difference]: Without dead ends: 205 [2018-10-04 12:45:28,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime 14 [2018-10-04 12:45:28,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-04 12:45:28,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-04 12:45:28,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-04 12:45:28,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 207 transitions. [2018-10-04 12:45:28,419 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 207 transitions. Word has length 202 [2018-10-04 12:45:28,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:28,419 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 207 transitions. [2018-10-04 12:45:28,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 12:45:28,419 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 207 transitions. [2018-10-04 12:45:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-04 12:45:28,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:28,420 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:28,420 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:28,420 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:28,421 INFO L82 PathProgramCache]: Analyzing trace with hash 48333916, now seen corresponding path program 93 times [2018-10-04 12:45:28,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:28,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:28,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:28,421 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:28,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:28,648 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:28,859 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:29,407 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:29,975 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:30,149 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:30,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:30,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:45:30,320 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:45:30,640 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 95 check-sat command(s) [2018-10-04 12:45:30,640 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:30,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:30,980 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:30,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 12:45:30,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 12:45:30,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 12:45:30,981 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:30,981 INFO L87 Difference]: Start difference. First operand 205 states and 207 transitions. Second operand 97 states. [2018-10-04 12:45:31,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:31,232 INFO L93 Difference]: Finished difference Result 221 states and 225 transitions. [2018-10-04 12:45:31,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 12:45:31,232 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 204 [2018-10-04 12:45:31,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:31,233 INFO L225 Difference]: With dead ends: 221 [2018-10-04 12:45:31,233 INFO L226 Difference]: Without dead ends: 207 [2018-10-04 12:45:31,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime 17 [2018-10-04 12:45:31,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-04 12:45:31,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-04 12:45:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-04 12:45:31,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2018-10-04 12:45:31,243 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 204 [2018-10-04 12:45:31,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:31,243 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2018-10-04 12:45:31,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 12:45:31,243 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2018-10-04 12:45:31,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-04 12:45:31,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:31,244 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:31,244 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:31,245 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:31,245 INFO L82 PathProgramCache]: Analyzing trace with hash 811087192, now seen corresponding path program 94 times [2018-10-04 12:45:31,245 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:31,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:31,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:31,246 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:31,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:31,473 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:31,676 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:31,977 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:32,474 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:33,111 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:33,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:33,578 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:45:33,586 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:45:33,721 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:45:33,721 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:33,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:34,069 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:34,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 12:45:34,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 12:45:34,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 12:45:34,070 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:34,070 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand 98 states. [2018-10-04 12:45:34,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:34,452 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2018-10-04 12:45:34,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 12:45:34,453 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 206 [2018-10-04 12:45:34,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:34,454 INFO L225 Difference]: With dead ends: 223 [2018-10-04 12:45:34,454 INFO L226 Difference]: Without dead ends: 209 [2018-10-04 12:45:34,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.8s impTime 19 [2018-10-04 12:45:34,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-04 12:45:34,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-04 12:45:34,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-04 12:45:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 211 transitions. [2018-10-04 12:45:34,460 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 211 transitions. Word has length 206 [2018-10-04 12:45:34,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:34,460 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 211 transitions. [2018-10-04 12:45:34,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 12:45:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 211 transitions. [2018-10-04 12:45:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-04 12:45:34,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:34,461 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:34,461 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:34,461 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:34,461 INFO L82 PathProgramCache]: Analyzing trace with hash -622422188, now seen corresponding path program 95 times [2018-10-04 12:45:34,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:34,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:34,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:34,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:34,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:34,711 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:34,944 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:35,285 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:35,483 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:35,765 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:36,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:36,022 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 [2018-10-04 12:45:36,029 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:45:36,334 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 97 check-sat command(s) [2018-10-04 12:45:36,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:36,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9330 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:36,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:36,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 12:45:36,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 12:45:36,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 12:45:36,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:36,683 INFO L87 Difference]: Start difference. First operand 209 states and 211 transitions. Second operand 99 states. [2018-10-04 12:45:36,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:36,930 INFO L93 Difference]: Finished difference Result 225 states and 229 transitions. [2018-10-04 12:45:36,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 12:45:36,931 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 208 [2018-10-04 12:45:36,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:36,932 INFO L225 Difference]: With dead ends: 225 [2018-10-04 12:45:36,932 INFO L226 Difference]: Without dead ends: 211 [2018-10-04 12:45:36,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 19 [2018-10-04 12:45:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-04 12:45:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-04 12:45:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-04 12:45:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 213 transitions. [2018-10-04 12:45:36,938 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 213 transitions. Word has length 208 [2018-10-04 12:45:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:36,938 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 213 transitions. [2018-10-04 12:45:36,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 12:45:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 213 transitions. [2018-10-04 12:45:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-04 12:45:36,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:36,939 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:36,939 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:36,939 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:36,939 INFO L82 PathProgramCache]: Analyzing trace with hash 459565648, now seen corresponding path program 96 times [2018-10-04 12:45:36,939 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:36,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:36,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:36,940 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:36,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:37,168 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:37,297 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:37,582 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:38,131 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:38,655 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:38,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:38,873 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 [2018-10-04 12:45:38,881 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:45:39,196 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 98 check-sat command(s) [2018-10-04 12:45:39,196 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:39,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 9524 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:39,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:39,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 12:45:39,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 12:45:39,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 12:45:39,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:39,803 INFO L87 Difference]: Start difference. First operand 211 states and 213 transitions. Second operand 100 states. [2018-10-04 12:45:40,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:40,156 INFO L93 Difference]: Finished difference Result 227 states and 231 transitions. [2018-10-04 12:45:40,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 12:45:40,157 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 210 [2018-10-04 12:45:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:40,157 INFO L225 Difference]: With dead ends: 227 [2018-10-04 12:45:40,157 INFO L226 Difference]: Without dead ends: 213 [2018-10-04 12:45:40,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.4s impTime 18 [2018-10-04 12:45:40,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-04 12:45:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-04 12:45:40,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-04 12:45:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2018-10-04 12:45:40,164 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 210 [2018-10-04 12:45:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:40,164 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2018-10-04 12:45:40,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 12:45:40,165 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2018-10-04 12:45:40,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-04 12:45:40,165 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:40,165 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:40,166 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:40,166 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:40,166 INFO L82 PathProgramCache]: Analyzing trace with hash 867790412, now seen corresponding path program 97 times [2018-10-04 12:45:40,166 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:40,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:40,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:40,167 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:40,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:40,441 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:40,612 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:40,801 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:41,358 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:42,059 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:42,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:42,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:45:42,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:42,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:42,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:42,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 12:45:42,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 12:45:42,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 12:45:42,936 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:42,936 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 101 states. [2018-10-04 12:45:43,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:43,249 INFO L93 Difference]: Finished difference Result 229 states and 233 transitions. [2018-10-04 12:45:43,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 12:45:43,249 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 212 [2018-10-04 12:45:43,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:43,250 INFO L225 Difference]: With dead ends: 229 [2018-10-04 12:45:43,250 INFO L226 Difference]: Without dead ends: 215 [2018-10-04 12:45:43,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.7s impTime 21 [2018-10-04 12:45:43,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-04 12:45:43,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-04 12:45:43,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-04 12:45:43,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2018-10-04 12:45:43,259 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 212 [2018-10-04 12:45:43,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:43,259 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2018-10-04 12:45:43,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 12:45:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2018-10-04 12:45:43,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-04 12:45:43,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:43,260 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:43,260 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:43,261 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:43,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1965202616, now seen corresponding path program 98 times [2018-10-04 12:45:43,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:43,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:43,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:43,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:45:43,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:43,535 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:43,656 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:43,883 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:44,531 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:45,351 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:45,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:45,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:45:45,746 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:45:45,892 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:45:45,892 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:45,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9918 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:46,262 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:46,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 12:45:46,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 12:45:46,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 12:45:46,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:46,263 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 102 states. [2018-10-04 12:45:46,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:46,642 INFO L93 Difference]: Finished difference Result 231 states and 235 transitions. [2018-10-04 12:45:46,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 12:45:46,642 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 214 [2018-10-04 12:45:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:46,644 INFO L225 Difference]: With dead ends: 231 [2018-10-04 12:45:46,645 INFO L226 Difference]: Without dead ends: 217 [2018-10-04 12:45:46,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.9s impTime 23 [2018-10-04 12:45:46,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-04 12:45:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-04 12:45:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-04 12:45:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 219 transitions. [2018-10-04 12:45:46,653 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 219 transitions. Word has length 214 [2018-10-04 12:45:46,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:46,654 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 219 transitions. [2018-10-04 12:45:46,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 12:45:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 219 transitions. [2018-10-04 12:45:46,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-04 12:45:46,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:46,654 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:46,655 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:46,655 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1462236860, now seen corresponding path program 99 times [2018-10-04 12:45:46,655 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:46,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:46,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:46,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:46,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:47,013 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:47,262 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:47,609 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:47,973 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:48,196 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:48,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:48,487 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 [2018-10-04 12:45:48,496 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:45:48,871 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2018-10-04 12:45:48,871 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:48,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 10118 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:49,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:49,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 12:45:49,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 12:45:49,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 12:45:49,236 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:49,236 INFO L87 Difference]: Start difference. First operand 217 states and 219 transitions. Second operand 103 states. [2018-10-04 12:45:49,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:49,518 INFO L93 Difference]: Finished difference Result 233 states and 237 transitions. [2018-10-04 12:45:49,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 12:45:49,519 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 216 [2018-10-04 12:45:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:49,519 INFO L225 Difference]: With dead ends: 233 [2018-10-04 12:45:49,520 INFO L226 Difference]: Without dead ends: 219 [2018-10-04 12:45:49,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime 23 [2018-10-04 12:45:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-04 12:45:49,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-04 12:45:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-04 12:45:49,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 221 transitions. [2018-10-04 12:45:49,525 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 221 transitions. Word has length 216 [2018-10-04 12:45:49,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:49,526 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 221 transitions. [2018-10-04 12:45:49,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 12:45:49,526 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 221 transitions. [2018-10-04 12:45:49,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-04 12:45:49,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:49,527 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:49,527 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:49,527 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:49,527 INFO L82 PathProgramCache]: Analyzing trace with hash 851517504, now seen corresponding path program 100 times [2018-10-04 12:45:49,527 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:49,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:49,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:49,528 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:49,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:49,887 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:50,018 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:50,265 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:50,683 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:51,257 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:51,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:51,855 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 [2018-10-04 12:45:51,862 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:45:52,006 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:45:52,007 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:52,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10320 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:52,488 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:52,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-04 12:45:52,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 12:45:52,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 12:45:52,489 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:52,489 INFO L87 Difference]: Start difference. First operand 219 states and 221 transitions. Second operand 104 states. [2018-10-04 12:45:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:52,887 INFO L93 Difference]: Finished difference Result 235 states and 239 transitions. [2018-10-04 12:45:52,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 12:45:52,888 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 218 [2018-10-04 12:45:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:52,888 INFO L225 Difference]: With dead ends: 235 [2018-10-04 12:45:52,888 INFO L226 Difference]: Without dead ends: 221 [2018-10-04 12:45:52,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.8s impTime 22 [2018-10-04 12:45:52,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-04 12:45:52,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-04 12:45:52,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-04 12:45:52,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 223 transitions. [2018-10-04 12:45:52,897 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 223 transitions. Word has length 218 [2018-10-04 12:45:52,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:52,898 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 223 transitions. [2018-10-04 12:45:52,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 12:45:52,898 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 223 transitions. [2018-10-04 12:45:52,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-04 12:45:52,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:52,899 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:52,899 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:52,899 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:52,900 INFO L82 PathProgramCache]: Analyzing trace with hash -423598020, now seen corresponding path program 101 times [2018-10-04 12:45:52,900 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:52,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:52,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:52,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:52,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:53,212 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:53,332 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:53,568 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:54,122 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:55,081 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:55,566 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:55,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:55,610 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:45:55,619 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:45:55,959 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 103 check-sat command(s) [2018-10-04 12:45:55,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:55,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:45:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10524 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:56,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:45:56,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-04 12:45:56,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 12:45:56,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 12:45:56,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:45:56,355 INFO L87 Difference]: Start difference. First operand 221 states and 223 transitions. Second operand 105 states. [2018-10-04 12:45:56,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:45:56,755 INFO L93 Difference]: Finished difference Result 237 states and 241 transitions. [2018-10-04 12:45:56,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 12:45:56,756 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 220 [2018-10-04 12:45:56,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:45:56,756 INFO L225 Difference]: With dead ends: 237 [2018-10-04 12:45:56,756 INFO L226 Difference]: Without dead ends: 223 [2018-10-04 12:45:56,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.0s impTime 8 [2018-10-04 12:45:56,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-04 12:45:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-04 12:45:56,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-04 12:45:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2018-10-04 12:45:56,764 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 220 [2018-10-04 12:45:56,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:45:56,764 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2018-10-04 12:45:56,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 12:45:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2018-10-04 12:45:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-04 12:45:56,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:45:56,765 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:45:56,765 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:45:56,765 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:45:56,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1743937224, now seen corresponding path program 102 times [2018-10-04 12:45:56,766 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:45:56,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:45:56,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:56,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:45:56,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:45:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:45:57,008 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:45:57,212 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:57,516 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:45:58,018 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:58,626 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:59,370 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:45:59,500 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:45:59,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:45:59,501 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 [2018-10-04 12:45:59,508 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:45:59,861 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 104 check-sat command(s) [2018-10-04 12:45:59,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:45:59,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10730 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:00,387 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:00,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-04 12:46:00,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 12:46:00,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 12:46:00,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:00,388 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 106 states. [2018-10-04 12:46:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:00,846 INFO L93 Difference]: Finished difference Result 239 states and 243 transitions. [2018-10-04 12:46:00,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 12:46:00,846 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 222 [2018-10-04 12:46:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:00,847 INFO L225 Difference]: With dead ends: 239 [2018-10-04 12:46:00,847 INFO L226 Difference]: Without dead ends: 225 [2018-10-04 12:46:00,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.1s impTime 10 [2018-10-04 12:46:00,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-04 12:46:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-04 12:46:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-04 12:46:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-10-04 12:46:00,856 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 222 [2018-10-04 12:46:00,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:00,856 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-10-04 12:46:00,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 12:46:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-10-04 12:46:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-04 12:46:00,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:00,857 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:46:00,857 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:00,857 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash 720407348, now seen corresponding path program 103 times [2018-10-04 12:46:00,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:00,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:00,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:00,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:00,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:01,090 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:01,328 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:01,462 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:01,718 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:02,101 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:02,658 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:02,765 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:02,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:02,766 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 12:46:02,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:02,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10938 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:03,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:03,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-04 12:46:03,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 12:46:03,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 12:46:03,371 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:03,371 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 107 states. [2018-10-04 12:46:03,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:03,707 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2018-10-04 12:46:03,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 12:46:03,707 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 224 [2018-10-04 12:46:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:03,708 INFO L225 Difference]: With dead ends: 241 [2018-10-04 12:46:03,708 INFO L226 Difference]: Without dead ends: 227 [2018-10-04 12:46:03,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.3s impTime 10 [2018-10-04 12:46:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-04 12:46:03,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-04 12:46:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-04 12:46:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 229 transitions. [2018-10-04 12:46:03,716 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 229 transitions. Word has length 224 [2018-10-04 12:46:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:03,717 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 229 transitions. [2018-10-04 12:46:03,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 12:46:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 229 transitions. [2018-10-04 12:46:03,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-04 12:46:03,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:03,718 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:46:03,718 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:03,718 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:03,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1866406352, now seen corresponding path program 104 times [2018-10-04 12:46:03,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:03,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:03,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:03,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:03,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:03,971 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:04,203 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:04,535 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:04,712 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:05,215 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:05,670 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:05,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:05,742 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 [2018-10-04 12:46:05,751 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:46:05,900 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:46:05,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:05,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 11148 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:06,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:06,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-04 12:46:06,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 12:46:06,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 12:46:06,306 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:06,306 INFO L87 Difference]: Start difference. First operand 227 states and 229 transitions. Second operand 108 states. [2018-10-04 12:46:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:06,602 INFO L93 Difference]: Finished difference Result 243 states and 247 transitions. [2018-10-04 12:46:06,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 12:46:06,603 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 226 [2018-10-04 12:46:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:06,603 INFO L225 Difference]: With dead ends: 243 [2018-10-04 12:46:06,603 INFO L226 Difference]: Without dead ends: 229 [2018-10-04 12:46:06,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.4s impTime 9 [2018-10-04 12:46:06,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-04 12:46:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-04 12:46:06,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-04 12:46:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 231 transitions. [2018-10-04 12:46:06,609 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 231 transitions. Word has length 226 [2018-10-04 12:46:06,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:06,610 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 231 transitions. [2018-10-04 12:46:06,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 12:46:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 231 transitions. [2018-10-04 12:46:06,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-04 12:46:06,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:06,611 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:46:06,611 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:06,611 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:06,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1008307668, now seen corresponding path program 105 times [2018-10-04 12:46:06,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:06,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:06,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:06,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:06,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:06,849 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:07,074 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:07,321 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:07,514 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:07,836 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:08,295 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:08,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:08,483 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 [2018-10-04 12:46:08,490 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:46:08,881 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 107 check-sat command(s) [2018-10-04 12:46:08,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:08,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 11360 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:09,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:09,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-04 12:46:09,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-04 12:46:09,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-04 12:46:09,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:09,288 INFO L87 Difference]: Start difference. First operand 229 states and 231 transitions. Second operand 109 states. [2018-10-04 12:46:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:09,607 INFO L93 Difference]: Finished difference Result 245 states and 249 transitions. [2018-10-04 12:46:09,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-04 12:46:09,607 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 228 [2018-10-04 12:46:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:09,607 INFO L225 Difference]: With dead ends: 245 [2018-10-04 12:46:09,608 INFO L226 Difference]: Without dead ends: 231 [2018-10-04 12:46:09,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime 13 [2018-10-04 12:46:09,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-04 12:46:09,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-04 12:46:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-04 12:46:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 233 transitions. [2018-10-04 12:46:09,614 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 233 transitions. Word has length 228 [2018-10-04 12:46:09,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:09,614 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 233 transitions. [2018-10-04 12:46:09,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-04 12:46:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 233 transitions. [2018-10-04 12:46:09,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-04 12:46:09,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:09,615 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:46:09,615 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:09,615 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:09,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1009193176, now seen corresponding path program 106 times [2018-10-04 12:46:09,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:09,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:09,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:09,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:09,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:09,879 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:10,095 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:10,478 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:10,851 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:11,346 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:11,995 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:12,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:12,274 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 [2018-10-04 12:46:12,280 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:46:12,430 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:46:12,430 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:12,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 11574 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:12,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:12,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-04 12:46:12,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-04 12:46:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-04 12:46:12,844 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:12,844 INFO L87 Difference]: Start difference. First operand 231 states and 233 transitions. Second operand 110 states. [2018-10-04 12:46:13,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:13,283 INFO L93 Difference]: Finished difference Result 247 states and 251 transitions. [2018-10-04 12:46:13,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-04 12:46:13,283 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 230 [2018-10-04 12:46:13,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:13,284 INFO L225 Difference]: With dead ends: 247 [2018-10-04 12:46:13,284 INFO L226 Difference]: Without dead ends: 233 [2018-10-04 12:46:13,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 1.9s impTime 14 [2018-10-04 12:46:13,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-04 12:46:13,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-04 12:46:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-04 12:46:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2018-10-04 12:46:13,290 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 230 [2018-10-04 12:46:13,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:13,290 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2018-10-04 12:46:13,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-04 12:46:13,290 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2018-10-04 12:46:13,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-04 12:46:13,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:13,291 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:46:13,291 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:13,291 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:13,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1860166364, now seen corresponding path program 107 times [2018-10-04 12:46:13,291 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:13,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:13,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:13,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:13,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:13,543 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:13,771 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:14,083 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:14,637 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:15,549 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:16,373 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:16,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:16,758 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 [2018-10-04 12:46:16,765 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 12:46:17,151 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 109 check-sat command(s) [2018-10-04 12:46:17,151 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:17,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 11790 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:17,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:17,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-04 12:46:17,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-04 12:46:17,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-04 12:46:17,545 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:17,545 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 111 states. [2018-10-04 12:46:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:18,072 INFO L93 Difference]: Finished difference Result 249 states and 253 transitions. [2018-10-04 12:46:18,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-04 12:46:18,073 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 232 [2018-10-04 12:46:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:18,073 INFO L225 Difference]: With dead ends: 249 [2018-10-04 12:46:18,073 INFO L226 Difference]: Without dead ends: 235 [2018-10-04 12:46:18,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.8s impTime 15 [2018-10-04 12:46:18,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-04 12:46:18,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-04 12:46:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-04 12:46:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 237 transitions. [2018-10-04 12:46:18,080 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 237 transitions. Word has length 232 [2018-10-04 12:46:18,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:18,080 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 237 transitions. [2018-10-04 12:46:18,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-04 12:46:18,080 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 237 transitions. [2018-10-04 12:46:18,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-04 12:46:18,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:18,081 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:46:18,081 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:18,081 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:18,081 INFO L82 PathProgramCache]: Analyzing trace with hash 693353504, now seen corresponding path program 108 times [2018-10-04 12:46:18,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:18,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:18,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:18,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:18,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:18,343 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:18,572 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:18,915 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:19,087 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:19,408 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:20,072 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:20,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:20,623 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:20,631 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 12:46:21,044 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 110 check-sat command(s) [2018-10-04 12:46:21,044 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:21,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12008 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:21,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:21,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-04 12:46:21,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-04 12:46:21,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-04 12:46:21,451 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:21,451 INFO L87 Difference]: Start difference. First operand 235 states and 237 transitions. Second operand 112 states. [2018-10-04 12:46:21,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:21,881 INFO L93 Difference]: Finished difference Result 251 states and 255 transitions. [2018-10-04 12:46:21,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-04 12:46:21,882 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 234 [2018-10-04 12:46:21,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:21,882 INFO L225 Difference]: With dead ends: 251 [2018-10-04 12:46:21,882 INFO L226 Difference]: Without dead ends: 237 [2018-10-04 12:46:21,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 1.9s impTime 13 [2018-10-04 12:46:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-04 12:46:21,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-04 12:46:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-04 12:46:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 239 transitions. [2018-10-04 12:46:21,890 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 239 transitions. Word has length 234 [2018-10-04 12:46:21,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:21,890 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 239 transitions. [2018-10-04 12:46:21,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-04 12:46:21,890 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 239 transitions. [2018-10-04 12:46:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-04 12:46:21,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:21,891 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:46:21,891 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:21,891 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:21,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2095346660, now seen corresponding path program 109 times [2018-10-04 12:46:21,891 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:21,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:21,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:21,892 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:21,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:22,161 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:22,401 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:22,586 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:23,136 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:23,850 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:24,623 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:24,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:24,715 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:24,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:24,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12228 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:25,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:25,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-04 12:46:25,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-04 12:46:25,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-04 12:46:25,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:25,330 INFO L87 Difference]: Start difference. First operand 237 states and 239 transitions. Second operand 113 states. [2018-10-04 12:46:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:25,740 INFO L93 Difference]: Finished difference Result 253 states and 257 transitions. [2018-10-04 12:46:25,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-04 12:46:25,740 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 236 [2018-10-04 12:46:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:25,741 INFO L225 Difference]: With dead ends: 253 [2018-10-04 12:46:25,741 INFO L226 Difference]: Without dead ends: 239 [2018-10-04 12:46:25,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.2s impTime 16 [2018-10-04 12:46:25,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-04 12:46:25,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-04 12:46:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-04 12:46:25,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 241 transitions. [2018-10-04 12:46:25,752 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 241 transitions. Word has length 236 [2018-10-04 12:46:25,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:25,752 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 241 transitions. [2018-10-04 12:46:25,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-04 12:46:25,753 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 241 transitions. [2018-10-04 12:46:25,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-04 12:46:25,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:25,754 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:46:25,754 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:25,754 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:25,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1976611560, now seen corresponding path program 110 times [2018-10-04 12:46:25,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:25,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:25,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:25,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:46:25,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:26,025 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:26,232 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:26,539 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:27,041 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:27,661 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:28,425 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:28,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:28,936 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:28,943 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 12:46:29,102 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 12:46:29,102 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:29,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12450 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:29,503 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:29,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-04 12:46:29,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-04 12:46:29,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-04 12:46:29,505 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:29,505 INFO L87 Difference]: Start difference. First operand 239 states and 241 transitions. Second operand 114 states. [2018-10-04 12:46:30,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:30,086 INFO L93 Difference]: Finished difference Result 255 states and 259 transitions. [2018-10-04 12:46:30,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-04 12:46:30,086 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 238 [2018-10-04 12:46:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:30,087 INFO L225 Difference]: With dead ends: 255 [2018-10-04 12:46:30,087 INFO L226 Difference]: Without dead ends: 241 [2018-10-04 12:46:30,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.5s impTime 18 [2018-10-04 12:46:30,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-04 12:46:30,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-04 12:46:30,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-04 12:46:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2018-10-04 12:46:30,093 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 238 [2018-10-04 12:46:30,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:30,093 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2018-10-04 12:46:30,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-04 12:46:30,093 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2018-10-04 12:46:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-04 12:46:30,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:30,094 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:46:30,094 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:30,094 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:30,094 INFO L82 PathProgramCache]: Analyzing trace with hash 458669844, now seen corresponding path program 111 times [2018-10-04 12:46:30,094 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:30,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:30,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:30,095 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:30,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:30,387 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:30,736 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:31,070 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:31,471 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:31,982 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:32,748 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:33,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:33,302 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:33,310 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 12:46:33,775 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 113 check-sat command(s) [2018-10-04 12:46:33,775 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:33,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:34,207 INFO L134 CoverageAnalysis]: Checked inductivity of 12674 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:34,228 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:34,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-04 12:46:34,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-04 12:46:34,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-04 12:46:34,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:34,230 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 115 states. [2018-10-04 12:46:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:34,782 INFO L93 Difference]: Finished difference Result 257 states and 261 transitions. [2018-10-04 12:46:34,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-04 12:46:34,783 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 240 [2018-10-04 12:46:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:34,783 INFO L225 Difference]: With dead ends: 257 [2018-10-04 12:46:34,783 INFO L226 Difference]: Without dead ends: 243 [2018-10-04 12:46:34,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.4s impTime 18 [2018-10-04 12:46:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-04 12:46:34,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-04 12:46:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-04 12:46:34,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 245 transitions. [2018-10-04 12:46:34,790 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 245 transitions. Word has length 240 [2018-10-04 12:46:34,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:34,790 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 245 transitions. [2018-10-04 12:46:34,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-04 12:46:34,790 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 245 transitions. [2018-10-04 12:46:34,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-04 12:46:34,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:34,791 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:46:34,791 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:34,791 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:34,791 INFO L82 PathProgramCache]: Analyzing trace with hash 6922768, now seen corresponding path program 112 times [2018-10-04 12:46:34,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:34,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:34,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:34,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:34,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:35,079 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:35,200 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:35,427 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:36,119 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:36,648 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:37,322 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:37,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:46:37,859 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:46:37,867 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 12:46:38,020 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 12:46:38,021 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 12:46:38,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:46:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12900 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-04 12:46:38,604 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:46:38,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-04 12:46:38,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-04 12:46:38,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-04 12:46:38,605 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:46:38,605 INFO L87 Difference]: Start difference. First operand 243 states and 245 transitions. Second operand 116 states. [2018-10-04 12:46:39,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:46:39,185 INFO L93 Difference]: Finished difference Result 259 states and 263 transitions. [2018-10-04 12:46:39,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-04 12:46:39,186 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 242 [2018-10-04 12:46:39,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:46:39,186 INFO L225 Difference]: With dead ends: 259 [2018-10-04 12:46:39,186 INFO L226 Difference]: Without dead ends: 245 [2018-10-04 12:46:39,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.4s impTime 20 [2018-10-04 12:46:39,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-04 12:46:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-10-04 12:46:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-04 12:46:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 247 transitions. [2018-10-04 12:46:39,193 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 247 transitions. Word has length 242 [2018-10-04 12:46:39,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:46:39,193 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 247 transitions. [2018-10-04 12:46:39,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-04 12:46:39,193 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 247 transitions. [2018-10-04 12:46:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-04 12:46:39,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:46:39,194 INFO L375 BasicCegarLoop]: trace histogram [115, 114, 4, 3, 3, 1, 1, 1, 1, 1] [2018-10-04 12:46:39,194 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:46:39,194 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:46:39,194 INFO L82 PathProgramCache]: Analyzing trace with hash -330320372, now seen corresponding path program 113 times [2018-10-04 12:46:39,194 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:46:39,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:46:39,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:39,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 12:46:39,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:46:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:46:39,513 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 12:46:39,767 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:40,141 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 12:46:40,702 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:41,619 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 12:46:42,422 INFO L252 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 Received shutdown request... [2018-10-04 12:46:42,669 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 12:46:42,673 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 12:46:42,674 INFO L202 PluginConnector]: Adding new model fragtest_simple.i_4.bplTransformedIcfg_BEv2_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 12:46:42 BoogieIcfgContainer [2018-10-04 12:46:42,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 12:46:42,674 INFO L168 Benchmark]: Toolchain (without parser) took 238210.99 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 191.9 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 247.7 MB). Peak memory consumption was 439.6 MB. Max. memory is 7.1 GB. [2018-10-04 12:46:42,676 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:46:42,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.57 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. [2018-10-04 12:46:42,677 INFO L168 Benchmark]: Boogie Preprocessor took 26.70 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:46:42,677 INFO L168 Benchmark]: RCFGBuilder took 307.84 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. [2018-10-04 12:46:42,678 INFO L168 Benchmark]: TraceAbstraction took 237826.57 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 191.9 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 226.5 MB). Peak memory consumption was 418.4 MB. Max. memory is 7.1 GB. [2018-10-04 12:46:42,681 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 0.27 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 45.57 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 Preprocessor took 26.70 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 307.84 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 237826.57 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 191.9 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 226.5 MB). Peak memory consumption was 418.4 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 245 with TraceHistMax 115, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 243 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. TIMEOUT Result, 237.7s OverallTime, 117 OverallIterations, 115 TraceHistogramMax, 24.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1044 SDtfs, 31 SDslu, 24745 SDs, 0 SdLazy, 13956 SolverSat, 230 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21246 GetRequests, 14685 SyntacticMatches, 0 SemanticMatches, 6561 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 176.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=245occurred in iteration=116, 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: 0.7s AutomataMinimizationTime, 116 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.8s SsaConstructionTime, 16.7s SatisfiabilityAnalysisTime, 184.7s InterpolantComputationTime, 29391 NumberOfCodeBlocks, 29391 NumberOfCodeBlocksAsserted, 3439 NumberOfCheckSat, 29162 ConstructedInterpolants, 0 QuantifiedInterpolants, 13410008 SizeOfPredicates, 113 NumberOfNonLiveVariables, 71716 ConjunctsInSsa, 6667 ConjunctsInUnsatCore, 229 InterpolantComputations, 3 PerfectInterpolantSequences, 4044/991664 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-0-2018-10-04_12-46-42-691.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-0-2018-10-04_12-46-42-691.csv Completed graceful shutdown