java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:13:56,811 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:13:56,813 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:13:56,831 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:13:56,831 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:13:56,833 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:13:56,834 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:13:56,837 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:13:56,839 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:13:56,840 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:13:56,841 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-02 12:13:56,882 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-02 12:13:56,912 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:13:56,912 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:13:56,914 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:13:56,914 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:13:56,916 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:13:56,917 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:13:56,917 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:13:56,917 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:13:56,918 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:13:56,918 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:13:56,918 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:13:56,918 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:13:56,918 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:13:56,919 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:13:56,919 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:13:56,919 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:13:56,919 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:13:56,919 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:13:56,919 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:13:56,920 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:13:56,920 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:13:56,920 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:13:56,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:13:56,920 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:13:56,920 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:13:56,921 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:13:56,921 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:13:56,921 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:13:56,921 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:13:56,923 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:13:56,923 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:13:56,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:13:57,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:13:57,009 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:13:57,010 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:13:57,011 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:13:57,012 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl [2018-10-02 12:13:57,012 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl' [2018-10-02 12:13:57,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:13:57,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:13:57,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:13:57,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:13:57,087 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:13:57,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:13:57" (1/1) ... [2018-10-02 12:13:57,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:13:57" (1/1) ... [2018-10-02 12:13:57,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:13:57,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:13:57,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:13:57,132 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:13:57,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:13:57" (1/1) ... [2018-10-02 12:13:57,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:13:57" (1/1) ... [2018-10-02 12:13:57,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:13:57" (1/1) ... [2018-10-02 12:13:57,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:13:57" (1/1) ... [2018-10-02 12:13:57,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:13:57" (1/1) ... [2018-10-02 12:13:57,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:13:57" (1/1) ... [2018-10-02 12:13:57,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:13:57" (1/1) ... [2018-10-02 12:13:57,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:13:57,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:13:57,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:13:57,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:13:57,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:13:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:13:57,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-02 12:13:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-02 12:13:57,468 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-02 12:13:57,468 INFO L202 PluginConnector]: Adding new model nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:13:57 BoogieIcfgContainer [2018-10-02 12:13:57,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:13:57,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:13:57,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:13:57,473 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:13:57,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:13:57" (1/2) ... [2018-10-02 12:13:57,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@703462f3 and model type nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:13:57, skipping insertion in model container [2018-10-02 12:13:57,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:13:57" (2/2) ... [2018-10-02 12:13:57,476 INFO L112 eAbstractionObserver]: Analyzing ICFG nested.i_4.bpl [2018-10-02 12:13:57,486 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:13:57,494 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:13:57,546 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:13:57,546 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:13:57,547 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:13:57,547 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:13:57,547 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:13:57,547 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:13:57,550 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:13:57,550 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:13:57,550 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:13:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-02 12:13:57,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-02 12:13:57,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:57,577 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-02 12:13:57,583 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:57,591 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:57,592 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-02 12:13:57,594 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:57,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:57,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:57,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:13:57,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:57,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:13:57,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:13:57,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:13:57,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:13:57,761 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:57,763 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-02 12:13:57,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:57,971 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-10-02 12:13:57,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:13:57,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-02 12:13:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:57,988 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:13:57,989 INFO L226 Difference]: Without dead ends: 11 [2018-10-02 12:13:57,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:13:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-02 12:13:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-10-02 12:13:58,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-02 12:13:58,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-10-02 12:13:58,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2018-10-02 12:13:58,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:58,021 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-10-02 12:13:58,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:13:58,021 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-10-02 12:13:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 12:13:58,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:58,022 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-10-02 12:13:58,022 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:58,022 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:58,023 INFO L82 PathProgramCache]: Analyzing trace with hash 209100445, now seen corresponding path program 1 times [2018-10-02 12:13:58,023 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:58,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:58,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:58,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:13:58,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:58,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:13:58,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-02 12:13:58,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:13:58,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:13:58,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:58,094 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-10-02 12:13:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:58,190 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-10-02 12:13:58,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:13:58,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-02 12:13:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:58,191 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:13:58,191 INFO L226 Difference]: Without dead ends: 11 [2018-10-02 12:13:58,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:13:58,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-02 12:13:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-02 12:13:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-02 12:13:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-02 12:13:58,201 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-10-02 12:13:58,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:58,202 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-02 12:13:58,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:13:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-02 12:13:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-02 12:13:58,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:58,203 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-02 12:13:58,203 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:58,203 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:58,204 INFO L82 PathProgramCache]: Analyzing trace with hash -850198025, now seen corresponding path program 1 times [2018-10-02 12:13:58,204 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:58,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:58,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:58,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:13:58,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:58,297 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:58,297 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:58,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:13:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:58,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:58,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:58,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-10-02 12:13:58,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:13:58,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:13:58,662 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:58,662 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 7 states. [2018-10-02 12:13:58,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:13:58,901 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-10-02 12:13:58,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:13:58,901 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-10-02 12:13:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:13:58,902 INFO L225 Difference]: With dead ends: 21 [2018-10-02 12:13:58,902 INFO L226 Difference]: Without dead ends: 13 [2018-10-02 12:13:58,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:13:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-02 12:13:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-02 12:13:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-02 12:13:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-10-02 12:13:58,908 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-10-02 12:13:58,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:13:58,908 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-10-02 12:13:58,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:13:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-10-02 12:13:58,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-02 12:13:58,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:13:58,910 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-10-02 12:13:58,910 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:13:58,911 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:13:58,911 INFO L82 PathProgramCache]: Analyzing trace with hash -928778543, now seen corresponding path program 2 times [2018-10-02 12:13:58,911 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:13:58,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:13:58,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:58,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:13:58,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:13:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:13:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:13:59,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:13:59,147 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:13:59,162 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:13:59,194 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:13:59,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:13:59,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:13:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-02 12:13:59,378 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:13:59,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2018-10-02 12:13:59,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:13:59,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:13:59,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:13:59,380 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-10-02 12:14:00,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:00,363 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-10-02 12:14:00,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:14:00,365 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-10-02 12:14:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:00,366 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:14:00,366 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:14:00,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.4s impTime [2018-10-02 12:14:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:14:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-10-02 12:14:00,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-02 12:14:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-02 12:14:00,376 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2018-10-02 12:14:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:00,377 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-02 12:14:00,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:14:00,377 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-02 12:14:00,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-02 12:14:00,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:00,378 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 3, 2, 2, 1, 1, 1] [2018-10-02 12:14:00,378 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:00,379 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:00,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1778757007, now seen corresponding path program 3 times [2018-10-02 12:14:00,379 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:00,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:00,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:00,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:00,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-02 12:14:00,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:00,484 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:00,493 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:14:00,507 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-02 12:14:00,507 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:00,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-02 12:14:00,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:00,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-10-02 12:14:00,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:14:00,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:14:00,642 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:00,643 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 10 states. [2018-10-02 12:14:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:01,460 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2018-10-02 12:14:01,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:14:01,461 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-10-02 12:14:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:01,465 INFO L225 Difference]: With dead ends: 65 [2018-10-02 12:14:01,465 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:14:01,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:14:01,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:14:01,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2018-10-02 12:14:01,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-02 12:14:01,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-10-02 12:14:01,479 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2018-10-02 12:14:01,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:01,479 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-10-02 12:14:01,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:14:01,480 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-10-02 12:14:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-02 12:14:01,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:01,481 INFO L375 BasicCegarLoop]: trace histogram [15, 12, 4, 3, 3, 1, 1, 1] [2018-10-02 12:14:01,481 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:01,482 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:01,482 INFO L82 PathProgramCache]: Analyzing trace with hash 209827969, now seen corresponding path program 4 times [2018-10-02 12:14:01,482 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:01,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:01,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:01,483 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:01,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 106 proven. 20 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-02 12:14:01,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:01,600 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:01,613 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:14:01,647 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:14:01,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:01,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 106 proven. 20 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-02 12:14:01,769 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:01,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-10-02 12:14:01,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-02 12:14:01,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-02 12:14:01,770 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:01,770 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 13 states. [2018-10-02 12:14:01,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:01,935 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-10-02 12:14:01,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:14:01,939 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-10-02 12:14:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:01,940 INFO L225 Difference]: With dead ends: 75 [2018-10-02 12:14:01,940 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:14:01,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:14:01,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:14:01,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-02 12:14:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-02 12:14:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-10-02 12:14:01,959 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 40 [2018-10-02 12:14:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:01,960 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-10-02 12:14:01,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-02 12:14:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-10-02 12:14:01,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-02 12:14:01,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:01,964 INFO L375 BasicCegarLoop]: trace histogram [18, 15, 4, 3, 3, 1, 1, 1] [2018-10-02 12:14:01,965 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:01,965 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:01,965 INFO L82 PathProgramCache]: Analyzing trace with hash -254509681, now seen corresponding path program 5 times [2018-10-02 12:14:01,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:01,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:01,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:01,967 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:01,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 150 proven. 30 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-02 12:14:02,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:02,150 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:02,168 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:14:02,253 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2018-10-02 12:14:02,253 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:02,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 150 proven. 30 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-10-02 12:14:02,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:02,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-10-02 12:14:02,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-02 12:14:02,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-02 12:14:02,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:02,569 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 15 states. [2018-10-02 12:14:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:02,689 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2018-10-02 12:14:02,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:14:02,693 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2018-10-02 12:14:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:02,694 INFO L225 Difference]: With dead ends: 85 [2018-10-02 12:14:02,694 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:14:02,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:14:02,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:14:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-02 12:14:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-02 12:14:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2018-10-02 12:14:02,708 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 46 [2018-10-02 12:14:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:02,708 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2018-10-02 12:14:02,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-02 12:14:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2018-10-02 12:14:02,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-02 12:14:02,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:02,710 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 4, 3, 3, 1, 1, 1] [2018-10-02 12:14:02,710 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:02,710 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:02,711 INFO L82 PathProgramCache]: Analyzing trace with hash -996261859, now seen corresponding path program 6 times [2018-10-02 12:14:02,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:02,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:02,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:02,712 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:02,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 202 proven. 42 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-10-02 12:14:02,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:02,895 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:02,903 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:14:02,951 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-10-02 12:14:02,952 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:02,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:03,308 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-10-02 12:14:03,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:03,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2018-10-02 12:14:03,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:14:03,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:14:03,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:03,330 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 14 states. [2018-10-02 12:14:04,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:04,869 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2018-10-02 12:14:04,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:14:04,869 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2018-10-02 12:14:04,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:04,870 INFO L225 Difference]: With dead ends: 129 [2018-10-02 12:14:04,871 INFO L226 Difference]: Without dead ends: 93 [2018-10-02 12:14:04,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime [2018-10-02 12:14:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-02 12:14:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2018-10-02 12:14:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-02 12:14:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2018-10-02 12:14:04,889 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 52 [2018-10-02 12:14:04,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:04,889 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2018-10-02 12:14:04,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:14:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2018-10-02 12:14:04,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-02 12:14:04,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:04,892 INFO L375 BasicCegarLoop]: trace histogram [32, 28, 5, 4, 4, 1, 1, 1] [2018-10-02 12:14:04,892 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:04,892 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:04,892 INFO L82 PathProgramCache]: Analyzing trace with hash -252111625, now seen corresponding path program 7 times [2018-10-02 12:14:04,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:04,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:04,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:04,894 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:04,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 392 proven. 56 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2018-10-02 12:14:05,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:05,588 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:05,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:14:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:05,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 392 proven. 56 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2018-10-02 12:14:06,256 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:06,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-10-02 12:14:06,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-02 12:14:06,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-02 12:14:06,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:06,258 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 19 states. [2018-10-02 12:14:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:06,486 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2018-10-02 12:14:06,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:14:06,488 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 76 [2018-10-02 12:14:06,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:06,489 INFO L225 Difference]: With dead ends: 143 [2018-10-02 12:14:06,489 INFO L226 Difference]: Without dead ends: 85 [2018-10-02 12:14:06,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.6s impTime [2018-10-02 12:14:06,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-02 12:14:06,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-02 12:14:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-02 12:14:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2018-10-02 12:14:06,507 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 76 [2018-10-02 12:14:06,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:06,507 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2018-10-02 12:14:06,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-02 12:14:06,507 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2018-10-02 12:14:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-02 12:14:06,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:06,509 INFO L375 BasicCegarLoop]: trace histogram [36, 32, 5, 4, 4, 1, 1, 1] [2018-10-02 12:14:06,509 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:06,509 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:06,509 INFO L82 PathProgramCache]: Analyzing trace with hash 771511391, now seen corresponding path program 8 times [2018-10-02 12:14:06,509 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:06,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:06,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:06,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:14:06,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 494 proven. 72 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-10-02 12:14:06,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:06,779 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:06,792 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:14:06,845 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:14:06,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:06,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 494 proven. 72 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-10-02 12:14:07,008 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:07,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-10-02 12:14:07,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-02 12:14:07,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-02 12:14:07,009 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:07,010 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 21 states. [2018-10-02 12:14:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:07,278 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2018-10-02 12:14:07,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:14:07,278 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 84 [2018-10-02 12:14:07,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:07,279 INFO L225 Difference]: With dead ends: 157 [2018-10-02 12:14:07,279 INFO L226 Difference]: Without dead ends: 93 [2018-10-02 12:14:07,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:14:07,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-02 12:14:07,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-02 12:14:07,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-02 12:14:07,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-10-02 12:14:07,296 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 84 [2018-10-02 12:14:07,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:07,296 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-10-02 12:14:07,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-02 12:14:07,296 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-10-02 12:14:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-02 12:14:07,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:07,298 INFO L375 BasicCegarLoop]: trace histogram [40, 36, 5, 4, 4, 1, 1, 1] [2018-10-02 12:14:07,298 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:07,298 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:07,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1630563271, now seen corresponding path program 9 times [2018-10-02 12:14:07,299 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:07,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:07,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:07,300 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:07,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 608 proven. 90 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-10-02 12:14:07,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:07,486 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:07,495 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:14:07,528 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-10-02 12:14:07,529 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:07,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 608 proven. 90 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-10-02 12:14:07,833 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:07,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2018-10-02 12:14:07,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:14:07,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:14:07,835 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:07,835 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 23 states. [2018-10-02 12:14:08,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:08,119 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2018-10-02 12:14:08,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-02 12:14:08,119 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2018-10-02 12:14:08,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:08,120 INFO L225 Difference]: With dead ends: 171 [2018-10-02 12:14:08,120 INFO L226 Difference]: Without dead ends: 101 [2018-10-02 12:14:08,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime [2018-10-02 12:14:08,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-02 12:14:08,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-02 12:14:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-02 12:14:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2018-10-02 12:14:08,138 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 92 [2018-10-02 12:14:08,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:08,139 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2018-10-02 12:14:08,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:14:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2018-10-02 12:14:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-02 12:14:08,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:08,141 INFO L375 BasicCegarLoop]: trace histogram [44, 40, 5, 4, 4, 1, 1, 1] [2018-10-02 12:14:08,141 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:08,141 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:08,141 INFO L82 PathProgramCache]: Analyzing trace with hash -220374225, now seen corresponding path program 10 times [2018-10-02 12:14:08,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:08,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:08,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:08,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:08,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-10-02 12:14:08,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:08,387 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:08,397 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:14:08,450 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:14:08,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:08,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-10-02 12:14:08,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:08,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-10-02 12:14:08,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:14:08,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:14:08,703 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:08,703 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2018-10-02 12:14:08,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:08,898 INFO L93 Difference]: Finished difference Result 149 states and 155 transitions. [2018-10-02 12:14:08,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:14:08,898 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2018-10-02 12:14:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:08,900 INFO L225 Difference]: With dead ends: 149 [2018-10-02 12:14:08,900 INFO L226 Difference]: Without dead ends: 147 [2018-10-02 12:14:08,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:14:08,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-02 12:14:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 125. [2018-10-02 12:14:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-02 12:14:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2018-10-02 12:14:08,923 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 100 [2018-10-02 12:14:08,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:08,924 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2018-10-02 12:14:08,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:14:08,924 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2018-10-02 12:14:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-02 12:14:08,926 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:08,926 INFO L375 BasicCegarLoop]: trace histogram [55, 50, 6, 5, 5, 1, 1, 1] [2018-10-02 12:14:08,926 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:08,926 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:08,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1446024969, now seen corresponding path program 11 times [2018-10-02 12:14:08,927 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:08,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:08,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:08,928 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:08,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3000 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-10-02 12:14:09,341 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:09,341 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:09,350 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:14:09,430 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-02 12:14:09,430 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:09,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3000 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-10-02 12:14:09,859 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:09,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-10-02 12:14:09,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:14:09,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:14:09,860 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:09,860 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 14 states. [2018-10-02 12:14:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:09,970 INFO L93 Difference]: Finished difference Result 173 states and 180 transitions. [2018-10-02 12:14:09,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:14:09,970 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2018-10-02 12:14:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:09,972 INFO L225 Difference]: With dead ends: 173 [2018-10-02 12:14:09,972 INFO L226 Difference]: Without dead ends: 171 [2018-10-02 12:14:09,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.2s impTime [2018-10-02 12:14:09,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-02 12:14:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 149. [2018-10-02 12:14:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-02 12:14:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2018-10-02 12:14:09,997 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 124 [2018-10-02 12:14:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:09,997 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2018-10-02 12:14:09,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:14:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2018-10-02 12:14:09,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-02 12:14:09,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:09,999 INFO L375 BasicCegarLoop]: trace histogram [66, 60, 7, 6, 6, 1, 1, 1] [2018-10-02 12:14:09,999 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:10,000 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:10,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1667523811, now seen corresponding path program 12 times [2018-10-02 12:14:10,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:10,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:10,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:10,001 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:10,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 3672 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-10-02 12:14:10,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:10,217 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:10,225 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:14:10,300 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-02 12:14:10,300 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:10,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 3672 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-10-02 12:14:10,731 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:10,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-10-02 12:14:10,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:14:10,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:14:10,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:10,733 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand 16 states. [2018-10-02 12:14:10,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:10,952 INFO L93 Difference]: Finished difference Result 197 states and 205 transitions. [2018-10-02 12:14:10,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:14:10,952 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 148 [2018-10-02 12:14:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:10,953 INFO L225 Difference]: With dead ends: 197 [2018-10-02 12:14:10,954 INFO L226 Difference]: Without dead ends: 195 [2018-10-02 12:14:10,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:14:10,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-02 12:14:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 173. [2018-10-02 12:14:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-02 12:14:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 180 transitions. [2018-10-02 12:14:10,982 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 180 transitions. Word has length 148 [2018-10-02 12:14:10,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:10,982 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 180 transitions. [2018-10-02 12:14:10,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:14:10,982 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 180 transitions. [2018-10-02 12:14:10,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-02 12:14:10,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:10,984 INFO L375 BasicCegarLoop]: trace histogram [77, 70, 8, 7, 7, 1, 1, 1] [2018-10-02 12:14:10,985 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:10,985 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:10,985 INFO L82 PathProgramCache]: Analyzing trace with hash 107136189, now seen corresponding path program 13 times [2018-10-02 12:14:10,985 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:10,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:10,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:10,986 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:10,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5908 backedges. 0 proven. 5138 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-10-02 12:14:11,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:11,211 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:11,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:14:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:11,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5908 backedges. 0 proven. 5138 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-10-02 12:14:11,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:11,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-10-02 12:14:11,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:14:11,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:14:11,749 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:11,749 INFO L87 Difference]: Start difference. First operand 173 states and 180 transitions. Second operand 18 states. [2018-10-02 12:14:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:12,009 INFO L93 Difference]: Finished difference Result 221 states and 230 transitions. [2018-10-02 12:14:12,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:14:12,018 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2018-10-02 12:14:12,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:12,019 INFO L225 Difference]: With dead ends: 221 [2018-10-02 12:14:12,019 INFO L226 Difference]: Without dead ends: 219 [2018-10-02 12:14:12,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime [2018-10-02 12:14:12,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-02 12:14:12,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 197. [2018-10-02 12:14:12,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-02 12:14:12,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2018-10-02 12:14:12,058 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 172 [2018-10-02 12:14:12,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:12,059 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2018-10-02 12:14:12,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:14:12,059 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2018-10-02 12:14:12,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-02 12:14:12,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:12,061 INFO L375 BasicCegarLoop]: trace histogram [88, 80, 9, 8, 8, 1, 1, 1] [2018-10-02 12:14:12,062 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:12,062 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:12,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1927956841, now seen corresponding path program 14 times [2018-10-02 12:14:12,062 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:12,062 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:12,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:12,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:14:12,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:12,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7728 backedges. 0 proven. 6848 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-10-02 12:14:12,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:12,908 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:12,916 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:14:13,038 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:14:13,038 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:13,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7728 backedges. 0 proven. 6848 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-10-02 12:14:13,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:13,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-10-02 12:14:13,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:14:13,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:14:13,570 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:13,571 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 20 states. [2018-10-02 12:14:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:13,751 INFO L93 Difference]: Finished difference Result 245 states and 255 transitions. [2018-10-02 12:14:13,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:14:13,752 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 196 [2018-10-02 12:14:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:13,753 INFO L225 Difference]: With dead ends: 245 [2018-10-02 12:14:13,753 INFO L226 Difference]: Without dead ends: 243 [2018-10-02 12:14:13,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.5s impTime [2018-10-02 12:14:13,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-02 12:14:13,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 221. [2018-10-02 12:14:13,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-02 12:14:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 230 transitions. [2018-10-02 12:14:13,791 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 230 transitions. Word has length 196 [2018-10-02 12:14:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:13,792 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 230 transitions. [2018-10-02 12:14:13,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:14:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 230 transitions. [2018-10-02 12:14:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-02 12:14:13,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:13,795 INFO L375 BasicCegarLoop]: trace histogram [99, 90, 10, 9, 9, 1, 1, 1] [2018-10-02 12:14:13,795 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:13,795 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:13,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1486407055, now seen corresponding path program 15 times [2018-10-02 12:14:13,796 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:13,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:13,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:13,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:13,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9792 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-10-02 12:14:14,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:14:14,107 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:14:14,117 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:14:14,265 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2018-10-02 12:14:14,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:14:14,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:14:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9792 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-10-02 12:14:14,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:14:14,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-10-02 12:14:14,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:14:14,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:14:14,807 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:14,807 INFO L87 Difference]: Start difference. First operand 221 states and 230 transitions. Second operand 22 states. [2018-10-02 12:14:15,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:15,067 INFO L93 Difference]: Finished difference Result 269 states and 280 transitions. [2018-10-02 12:14:15,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-02 12:14:15,067 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 220 [2018-10-02 12:14:15,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:15,069 INFO L225 Difference]: With dead ends: 269 [2018-10-02 12:14:15,069 INFO L226 Difference]: Without dead ends: 267 [2018-10-02 12:14:15,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.1s impTime [2018-10-02 12:14:15,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-02 12:14:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 245. [2018-10-02 12:14:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-02 12:14:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 255 transitions. [2018-10-02 12:14:15,115 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 255 transitions. Word has length 220 [2018-10-02 12:14:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:15,116 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 255 transitions. [2018-10-02 12:14:15,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:14:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 255 transitions. [2018-10-02 12:14:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-02 12:14:15,117 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:14:15,117 INFO L375 BasicCegarLoop]: trace histogram [110, 100, 11, 10, 10, 1, 1, 1] [2018-10-02 12:14:15,118 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:14:15,118 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:14:15,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1732333643, now seen corresponding path program 16 times [2018-10-02 12:14:15,118 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:14:15,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:14:15,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:15,119 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:14:15,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:14:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:14:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 12082 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-02 12:14:19,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:14:19,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2018-10-02 12:14:19,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-02 12:14:19,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-02 12:14:19,028 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:14:19,028 INFO L87 Difference]: Start difference. First operand 245 states and 255 transitions. Second operand 103 states. [2018-10-02 12:14:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:14:22,953 INFO L93 Difference]: Finished difference Result 10235 states and 10695 transitions. [2018-10-02 12:14:22,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-02 12:14:22,953 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 244 [2018-10-02 12:14:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:14:22,954 INFO L225 Difference]: With dead ends: 10235 [2018-10-02 12:14:22,954 INFO L226 Difference]: Without dead ends: 0 [2018-10-02 12:14:22,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.2s impTime [2018-10-02 12:14:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-02 12:14:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-02 12:14:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-02 12:14:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-02 12:14:22,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 244 [2018-10-02 12:14:22,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:14:22,966 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-02 12:14:22,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-02 12:14:22,967 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-02 12:14:22,967 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-02 12:14:22,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-02 12:14:28,861 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:28,863 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:28,872 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:29,001 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:29,084 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:29,124 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:29,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:29,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:29,409 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:29,462 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:29,647 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:29,700 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:29,989 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:30,015 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:30,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:30,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:30,347 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:30,450 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:30,538 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:30,761 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:30,837 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:31,345 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:31,433 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:31,524 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:31,774 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:32,169 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:32,551 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:32,924 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:33,180 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:33,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:33,489 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:33,653 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:34,427 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:34,534 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:34,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:34,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:35,494 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:35,691 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:35,793 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:36,247 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:36,442 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:36,666 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:36,711 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:37,172 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:37,292 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:37,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:37,425 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:37,473 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:37,567 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:37,695 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:38,808 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:38,821 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:39,284 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:39,860 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:40,304 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:40,718 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:41,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:43,301 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:45,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:45,305 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:45,962 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:45,977 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:48,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:50,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:50,556 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:51,194 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:52,186 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:54,774 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:56,701 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:14:59,402 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:01,848 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:05,553 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:05,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:13,181 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:35,382 WARN L178 SmtUtils]: Spent 1.21 m on a formula simplification. DAG size of input: 5105 DAG size of output: 1935 [2018-10-02 12:15:39,700 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:39,701 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:39,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:39,769 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:39,812 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:39,833 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:39,882 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:39,897 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:39,988 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:40,019 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:40,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:40,173 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:40,335 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:40,485 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:40,589 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:40,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:40,761 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:40,862 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:40,953 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:41,156 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:41,231 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:41,749 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:41,840 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:41,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:42,166 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:42,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:42,802 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:43,214 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:43,484 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:43,667 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:43,839 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:44,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:44,879 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:44,987 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:45,264 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:45,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:45,937 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:46,131 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:46,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:46,619 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:46,761 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:46,860 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:46,906 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:47,514 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:47,636 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:47,674 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:47,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:47,809 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:47,904 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:48,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:49,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:49,127 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:49,449 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:50,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:50,466 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:51,041 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:51,548 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:53,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:55,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:55,660 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:56,199 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:56,215 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:15:59,156 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:00,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:00,408 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:00,958 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:01,952 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:04,112 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:06,010 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:08,526 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:10,945 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:14,859 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:15,028 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:22,567 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-02 12:16:45,934 WARN L178 SmtUtils]: Spent 1.18 m on a formula simplification. DAG size of input: 5105 DAG size of output: 1935 [2018-10-02 12:16:46,769 WARN L178 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-10-02 12:16:47,780 WARN L178 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-10-02 12:18:02,560 WARN L178 SmtUtils]: Spent 1.25 m on a formula simplification. DAG size of input: 1932 DAG size of output: 362 Received shutdown request... [2018-10-02 12:18:11,490 WARN L186 SmtUtils]: Removed 1248 from assertion stack [2018-10-02 12:18:11,491 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-10-02 12:18:11,492 INFO L168 Benchmark]: Toolchain (without parser) took 254408.09 ms. Allocated memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -803.2 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-10-02 12:18:11,494 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:18:11,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.82 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:18:11,495 INFO L168 Benchmark]: Boogie Preprocessor took 21.91 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:18:11,496 INFO L168 Benchmark]: RCFGBuilder took 314.86 ms. Allocated memory is still 1.6 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-02 12:18:11,498 INFO L168 Benchmark]: TraceAbstraction took 254021.38 ms. Allocated memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -824.3 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-10-02 12:18:11,503 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 0.25 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.82 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.91 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 314.86 ms. Allocated memory is still 1.6 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 254021.38 ms. Allocated memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -824.3 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 1932. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested.i_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-18-11-519.csv Completed graceful shutdown