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/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d19836b [2018-09-26 21:51:42,378 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 21:51:42,380 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 21:51:42,392 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 21:51:42,393 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 21:51:42,394 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 21:51:42,395 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 21:51:42,397 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 21:51:42,399 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 21:51:42,399 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 21:51:42,400 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-26 21:51:42,431 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-26 21:51:42,445 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 21:51:42,445 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 21:51:42,446 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-26 21:51:42,447 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-26 21:51:42,448 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-26 21:51:42,448 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-26 21:51:42,448 INFO L133 SettingsManager]: * Use SBE=true [2018-09-26 21:51:42,449 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-26 21:51:42,449 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-26 21:51:42,449 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-26 21:51:42,449 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-26 21:51:42,449 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-26 21:51:42,450 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-26 21:51:42,450 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-26 21:51:42,450 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-26 21:51:42,450 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-26 21:51:42,450 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-26 21:51:42,450 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-26 21:51:42,451 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 21:51:42,451 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-26 21:51:42,451 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-26 21:51:42,451 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-26 21:51:42,451 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:51:42,452 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 21:51:42,452 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-26 21:51:42,453 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-26 21:51:42,454 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-26 21:51:42,454 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 21:51:42,454 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-26 21:51:42,454 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 21:51:42,454 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-26 21:51:42,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 21:51:42,524 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 21:51:42,530 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 21:51:42,532 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 21:51:42,533 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 21:51:42,533 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl [2018-09-26 21:51:42,534 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl' [2018-09-26 21:51:42,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 21:51:42,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 21:51:42,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 21:51:42,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 21:51:42,616 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 21:51:42,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:42" (1/1) ... [2018-09-26 21:51:42,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:42" (1/1) ... [2018-09-26 21:51:42,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 21:51:42,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 21:51:42,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 21:51:42,664 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 21:51:42,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:42" (1/1) ... [2018-09-26 21:51:42,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:42" (1/1) ... [2018-09-26 21:51:42,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:42" (1/1) ... [2018-09-26 21:51:42,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:42" (1/1) ... [2018-09-26 21:51:42,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:42" (1/1) ... [2018-09-26 21:51:42,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:42" (1/1) ... [2018-09-26 21:51:42,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:42" (1/1) ... [2018-09-26 21:51:42,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 21:51:42,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 21:51:42,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 21:51:42,694 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 21:51:42,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:51:42,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 21:51:42,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 21:51:43,319 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 21:51:43,320 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:51:43 BoogieIcfgContainer [2018-09-26 21:51:43,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 21:51:43,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 21:51:43,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 21:51:43,325 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 21:51:43,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:51:42" (1/2) ... [2018-09-26 21:51:43,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b046eea and model type pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:51:43, skipping insertion in model container [2018-09-26 21:51:43,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:51:43" (2/2) ... [2018-09-26 21:51:43,329 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl [2018-09-26 21:51:43,338 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-26 21:51:43,347 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 21:51:43,394 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 21:51:43,395 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 21:51:43,395 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 21:51:43,396 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-26 21:51:43,396 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 21:51:43,396 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 21:51:43,396 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 21:51:43,396 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 21:51:43,396 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 21:51:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-09-26 21:51:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-26 21:51:43,419 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:51:43,420 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:51:43,421 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:51:43,428 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:51:43,429 INFO L82 PathProgramCache]: Analyzing trace with hash -100896173, now seen corresponding path program 1 times [2018-09-26 21:51:43,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:51:43,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:51:43,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:43,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:51:43,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:51:43,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:51:43,691 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:51:43,691 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:51:43,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:51:43,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:51:43,710 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:51:43,712 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2018-09-26 21:51:43,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:51:43,821 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2018-09-26 21:51:43,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:51:43,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-09-26 21:51:43,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:51:43,834 INFO L225 Difference]: With dead ends: 39 [2018-09-26 21:51:43,834 INFO L226 Difference]: Without dead ends: 25 [2018-09-26 21:51:43,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:51:43,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-26 21:51:43,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-09-26 21:51:43,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-26 21:51:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2018-09-26 21:51:43,882 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 12 [2018-09-26 21:51:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:51:43,882 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2018-09-26 21:51:43,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:51:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2018-09-26 21:51:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-26 21:51:43,883 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:51:43,884 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:51:43,884 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:51:43,884 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:51:43,884 INFO L82 PathProgramCache]: Analyzing trace with hash -100955755, now seen corresponding path program 1 times [2018-09-26 21:51:43,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:51:43,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:51:43,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:43,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:51:43,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:51:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:51:44,032 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:51:44,032 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 21:51:44,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 21:51:44,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 21:51:44,034 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:51:44,034 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 4 states. [2018-09-26 21:51:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:51:44,358 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2018-09-26 21:51:44,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:51:44,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-09-26 21:51:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:51:44,360 INFO L225 Difference]: With dead ends: 46 [2018-09-26 21:51:44,360 INFO L226 Difference]: Without dead ends: 44 [2018-09-26 21:51:44,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:51:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-26 21:51:44,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 25. [2018-09-26 21:51:44,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-26 21:51:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2018-09-26 21:51:44,372 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 12 [2018-09-26 21:51:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:51:44,373 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2018-09-26 21:51:44,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 21:51:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2018-09-26 21:51:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-26 21:51:44,374 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:51:44,374 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:51:44,374 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:51:44,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:51:44,375 INFO L82 PathProgramCache]: Analyzing trace with hash -493923183, now seen corresponding path program 1 times [2018-09-26 21:51:44,375 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:51:44,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:51:44,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:44,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:51:44,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:51:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:51:44,473 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:51:44,473 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:51:44,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:51:44,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:51:44,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:51:44,474 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand 3 states. [2018-09-26 21:51:44,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:51:44,536 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2018-09-26 21:51:44,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:51:44,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-09-26 21:51:44,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:51:44,538 INFO L225 Difference]: With dead ends: 55 [2018-09-26 21:51:44,538 INFO L226 Difference]: Without dead ends: 41 [2018-09-26 21:51:44,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:51:44,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-26 21:51:44,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-09-26 21:51:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-26 21:51:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-09-26 21:51:44,553 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 12 [2018-09-26 21:51:44,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:51:44,553 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-09-26 21:51:44,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:51:44,554 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2018-09-26 21:51:44,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-26 21:51:44,555 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:51:44,555 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:51:44,555 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:51:44,556 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:51:44,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1628792711, now seen corresponding path program 1 times [2018-09-26 21:51:44,556 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:51:44,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:51:44,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:44,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:51:44,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:51:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:51:44,737 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:51:44,738 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-26 21:51:44,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:51:44,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:51:44,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:51:44,739 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 3 states. [2018-09-26 21:51:44,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:51:44,858 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2018-09-26 21:51:44,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:51:44,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-09-26 21:51:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:51:44,865 INFO L225 Difference]: With dead ends: 111 [2018-09-26 21:51:44,866 INFO L226 Difference]: Without dead ends: 75 [2018-09-26 21:51:44,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:51:44,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-26 21:51:44,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2018-09-26 21:51:44,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-26 21:51:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2018-09-26 21:51:44,898 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 22 [2018-09-26 21:51:44,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:51:44,899 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2018-09-26 21:51:44,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:51:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2018-09-26 21:51:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-26 21:51:44,900 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:51:44,900 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:51:44,901 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:51:44,901 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:51:44,901 INFO L82 PathProgramCache]: Analyzing trace with hash -819446085, now seen corresponding path program 1 times [2018-09-26 21:51:44,901 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:51:44,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:51:44,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:44,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:51:44,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:51:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:51:45,009 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:51:45,009 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-26 21:51:45,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:51:45,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:51:45,010 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:51:45,011 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand 3 states. [2018-09-26 21:51:45,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:51:45,143 INFO L93 Difference]: Finished difference Result 213 states and 273 transitions. [2018-09-26 21:51:45,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:51:45,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-09-26 21:51:45,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:51:45,153 INFO L225 Difference]: With dead ends: 213 [2018-09-26 21:51:45,153 INFO L226 Difference]: Without dead ends: 143 [2018-09-26 21:51:45,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:51:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-26 21:51:45,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2018-09-26 21:51:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-09-26 21:51:45,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 176 transitions. [2018-09-26 21:51:45,204 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 176 transitions. Word has length 22 [2018-09-26 21:51:45,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:51:45,207 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 176 transitions. [2018-09-26 21:51:45,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:51:45,207 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 176 transitions. [2018-09-26 21:51:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-26 21:51:45,209 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:51:45,209 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:51:45,209 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:51:45,209 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:51:45,210 INFO L82 PathProgramCache]: Analyzing trace with hash -762187783, now seen corresponding path program 1 times [2018-09-26 21:51:45,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:51:45,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:51:45,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:45,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:51:45,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:51:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:51:45,375 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:51:45,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:51:45,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:51:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:51:45,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:51:45,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-26 21:51:45,802 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:51:45,802 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-09-26 21:51:45,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-26 21:51:45,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-26 21:51:45,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:51:45,804 INFO L87 Difference]: Start difference. First operand 141 states and 176 transitions. Second operand 7 states. [2018-09-26 21:51:48,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:51:48,702 INFO L93 Difference]: Finished difference Result 386 states and 480 transitions. [2018-09-26 21:51:48,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-26 21:51:48,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-09-26 21:51:48,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:51:48,707 INFO L225 Difference]: With dead ends: 386 [2018-09-26 21:51:48,707 INFO L226 Difference]: Without dead ends: 202 [2018-09-26 21:51:48,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:51:48,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-09-26 21:51:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 185. [2018-09-26 21:51:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-09-26 21:51:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 222 transitions. [2018-09-26 21:51:48,763 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 222 transitions. Word has length 22 [2018-09-26 21:51:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:51:48,763 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 222 transitions. [2018-09-26 21:51:48,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-26 21:51:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 222 transitions. [2018-09-26 21:51:48,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-26 21:51:48,766 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:51:48,766 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-09-26 21:51:48,766 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:51:48,766 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:51:48,767 INFO L82 PathProgramCache]: Analyzing trace with hash 518092167, now seen corresponding path program 2 times [2018-09-26 21:51:48,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:51:48,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:51:48,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:48,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:51:48,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:51:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-09-26 21:51:48,891 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:51:48,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:51:48,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:51:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:51:48,892 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:51:48,892 INFO L87 Difference]: Start difference. First operand 185 states and 222 transitions. Second operand 3 states. [2018-09-26 21:51:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:51:48,995 INFO L93 Difference]: Finished difference Result 375 states and 448 transitions. [2018-09-26 21:51:48,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:51:48,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-09-26 21:51:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:51:48,997 INFO L225 Difference]: With dead ends: 375 [2018-09-26 21:51:48,998 INFO L226 Difference]: Without dead ends: 187 [2018-09-26 21:51:48,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:51:48,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-26 21:51:49,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 151. [2018-09-26 21:51:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-26 21:51:49,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 177 transitions. [2018-09-26 21:51:49,037 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 177 transitions. Word has length 42 [2018-09-26 21:51:49,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:51:49,037 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 177 transitions. [2018-09-26 21:51:49,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:51:49,038 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 177 transitions. [2018-09-26 21:51:49,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-26 21:51:49,039 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:51:49,040 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-09-26 21:51:49,040 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:51:49,040 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:51:49,040 INFO L82 PathProgramCache]: Analyzing trace with hash -537457785, now seen corresponding path program 3 times [2018-09-26 21:51:49,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:51:49,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:51:49,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:49,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:51:49,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:51:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:51:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-26 21:51:49,129 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:51:49,129 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:51:49,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:51:49,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:51:49,130 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:51:49,130 INFO L87 Difference]: Start difference. First operand 151 states and 177 transitions. Second operand 3 states. [2018-09-26 21:51:49,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:51:49,138 INFO L93 Difference]: Finished difference Result 153 states and 179 transitions. [2018-09-26 21:51:49,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:51:49,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-09-26 21:51:49,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:51:49,139 INFO L225 Difference]: With dead ends: 153 [2018-09-26 21:51:49,139 INFO L226 Difference]: Without dead ends: 0 [2018-09-26 21:51:49,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:51:49,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-26 21:51:49,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-26 21:51:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-26 21:51:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-26 21:51:49,141 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2018-09-26 21:51:49,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:51:49,141 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-26 21:51:49,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:51:49,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-26 21:51:49,142 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-26 21:51:49,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-26 21:51:49,223 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-26 21:51:49,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-26 21:51:49,532 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2018-09-26 21:51:49,650 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-09-26 21:51:49,808 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-09-26 21:51:50,035 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-09-26 21:51:50,202 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-09-26 21:51:50,318 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-09-26 21:51:50,576 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-26 21:51:50,824 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2018-09-26 21:51:50,909 INFO L422 ceAbstractionStarter]: At program point L289(lines 284 290) the Hoare annotation is: (and (not (= ~p2_old ~nomsg)) (<= 1 ~mode2) (<= ~mode2 1) (<= 1 ULTIMATE.start_check_~tmp~77) (<= ~send2 127) (<= 0 ~send2) (<= ~mode3 1) (<= 1 ~mode3) (= 0 (+ ~nomsg 1))) [2018-09-26 21:51:50,909 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 57 311) no Hoare annotation was computed. [2018-09-26 21:51:50,910 INFO L422 ceAbstractionStarter]: At program point L223(lines 214 224) the Hoare annotation is: (let ((.cse0 (<= ~send2 127)) (.cse1 (<= 0 ~send2)) (.cse2 (= 0 (+ ~nomsg 1)))) (or (and (= ~mode3 (* 256 (div ~mode3 256))) .cse0 .cse1 (= ~mode2 (* 256 (div ~mode2 256))) .cse2 (<= ~r1 (* 256 (div ~r1 256)))) (and (not (= ~p2_old ~nomsg)) (<= 1 ~mode2) (<= ~mode2 1) .cse0 .cse1 (<= ~mode3 1) (<= 1 ~mode3) .cse2))) [2018-09-26 21:51:50,910 INFO L422 ceAbstractionStarter]: At program point L246(lines 237 247) the Hoare annotation is: (let ((.cse3 (= ~mode3 (* 256 (div ~mode3 256)))) (.cse4 (<= 1 ~mode2)) (.cse5 (<= ~mode2 1)) (.cse0 (<= ~send2 127)) (.cse1 (<= 0 ~send2)) (.cse2 (= 0 (+ ~nomsg 1))) (.cse6 (not (= ~p2_new ~nomsg)))) (or (and (not (= ~p2_old ~nomsg)) .cse0 .cse1 (<= ~mode3 1) (<= 1 ~mode3) .cse2) (and .cse3 .cse4 .cse5 .cse0 .cse1 .cse2 (<= ~r1 (* 256 (div ~r1 256))) .cse6) (and .cse3 .cse4 .cse5 .cse0 (exists ((v_~r1_7 Int)) (let ((.cse7 (mod v_~r1_7 256))) (and (= ~r1 (+ .cse7 1)) (<= .cse7 0)))) .cse1 .cse2 .cse6))) [2018-09-26 21:51:50,910 INFO L422 ceAbstractionStarter]: At program point L308(lines 199 308) the Hoare annotation is: (let ((.cse0 (<= ~send2 127)) (.cse1 (<= 0 ~send2)) (.cse2 (= 0 (+ ~nomsg 1)))) (or (and (= ~mode3 (* 256 (div ~mode3 256))) (= ~mode1 (* 256 (div ~mode1 256))) .cse0 (= ~mode2 (* 256 (div ~mode2 256))) .cse1 .cse2 (<= ~r1 (* 256 (div ~r1 256)))) (and (not (= ~p2_old ~nomsg)) (<= 1 ~mode2) (<= ~mode2 1) .cse0 .cse1 (<= ~mode3 1) (<= 1 ~mode3) .cse2))) [2018-09-26 21:51:50,911 INFO L422 ceAbstractionStarter]: At program point L228(lines 228 238) the Hoare annotation is: (let ((.cse0 (<= ~send2 127)) (.cse1 (<= 0 ~send2)) (.cse2 (= 0 (+ ~nomsg 1)))) (or (and (= ~mode3 (* 256 (div ~mode3 256))) .cse0 .cse1 (= ~mode2 (* 256 (div ~mode2 256))) .cse2 (<= ~r1 (* 256 (div ~r1 256)))) (and (not (= ~p2_old ~nomsg)) (<= 1 ~mode2) (<= ~mode2 1) .cse0 .cse1 (<= ~mode3 1) (<= 1 ~mode3) .cse2))) [2018-09-26 21:51:50,911 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 57 311) no Hoare annotation was computed. [2018-09-26 21:51:50,911 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 57 311) no Hoare annotation was computed. [2018-09-26 21:51:50,911 INFO L422 ceAbstractionStarter]: At program point L251(lines 251 260) the Hoare annotation is: (let ((.cse3 (= ~mode3 (* 256 (div ~mode3 256)))) (.cse4 (<= 1 ~mode2)) (.cse5 (<= ~mode2 1)) (.cse0 (<= ~send2 127)) (.cse1 (<= 0 ~send2)) (.cse2 (= 0 (+ ~nomsg 1))) (.cse6 (not (= ~p2_new ~nomsg)))) (or (and (not (= ~p2_old ~nomsg)) .cse0 .cse1 (<= ~mode3 1) (<= 1 ~mode3) .cse2) (and .cse3 .cse4 .cse5 .cse0 .cse1 .cse2 (<= ~r1 (* 256 (div ~r1 256))) .cse6) (and .cse3 .cse4 .cse5 .cse0 (exists ((v_~r1_7 Int)) (let ((.cse7 (mod v_~r1_7 256))) (and (= ~r1 (+ .cse7 1)) (<= .cse7 0)))) .cse1 .cse2 .cse6))) [2018-09-26 21:51:50,912 INFO L422 ceAbstractionStarter]: At program point L278(lines 278 285) the Hoare annotation is: (let ((.cse0 (not (= ~p2_old ~nomsg))) (.cse1 (<= 1 ~mode2)) (.cse2 (<= ~mode2 1)) (.cse3 (<= ~send2 127)) (.cse4 (<= 0 ~send2)) (.cse5 (<= ~mode3 1)) (.cse6 (<= 1 ~mode3)) (.cse7 (= 0 (+ ~nomsg 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= ~r1 (* 256 (div ~r1 256)))) (and .cse0 .cse1 .cse2 .cse3 (exists ((v_~r1_7 Int)) (let ((.cse8 (mod v_~r1_7 256))) (and (= ~r1 (+ .cse8 1)) (<= .cse8 0)))) .cse4 .cse5 .cse6 .cse7))) [2018-09-26 21:51:50,912 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 310) no Hoare annotation was computed. [2018-09-26 21:51:50,912 INFO L422 ceAbstractionStarter]: At program point L305(lines 305 309) the Hoare annotation is: false [2018-09-26 21:51:50,912 INFO L422 ceAbstractionStarter]: At program point L206(lines 206 215) the Hoare annotation is: (let ((.cse0 (<= ~send2 127)) (.cse1 (<= 0 ~send2)) (.cse2 (= 0 (+ ~nomsg 1)))) (or (and (= ~mode3 (* 256 (div ~mode3 256))) (= ~mode1 (* 256 (div ~mode1 256))) .cse0 (= ~mode2 (* 256 (div ~mode2 256))) .cse1 .cse2 (<= ~r1 (* 256 (div ~r1 256)))) (and (not (= ~p2_old ~nomsg)) (<= 1 ~mode2) (<= ~mode2 1) .cse0 .cse1 (<= ~mode3 1) (<= 1 ~mode3) .cse2))) [2018-09-26 21:51:50,912 INFO L422 ceAbstractionStarter]: At program point L299(lines 299 306) the Hoare annotation is: (and (<= ULTIMATE.start_assert_~arg 1) (not (= ~p2_old ~nomsg)) (<= 1 ULTIMATE.start_check_~tmp~77) (<= 1 ~mode2) (<= ~mode2 1) (<= ~send2 127) (<= 0 ~send2) (<= ~mode3 1) (<= 1 ~mode3) (= 0 (+ ~nomsg 1)) (<= 1 ULTIMATE.start_assert_~arg)) [2018-09-26 21:51:50,913 INFO L422 ceAbstractionStarter]: At program point L266(lines 259 267) the Hoare annotation is: (let ((.cse0 (<= 1 ~mode2)) (.cse1 (<= ~mode2 1)) (.cse2 (<= ~send2 127)) (.cse4 (<= 0 ~send2)) (.cse5 (<= ~mode3 1)) (.cse6 (<= 1 ~mode3)) (.cse7 (= 0 (+ ~nomsg 1))) (.cse8 (not (= ~p2_new ~nomsg)))) (or (and .cse0 .cse1 .cse2 (exists ((v_~r1_7 Int)) (let ((.cse3 (mod v_~r1_7 256))) (and (= ~r1 (+ .cse3 1)) (<= .cse3 0)))) .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse1 .cse2 .cse4 .cse5 .cse6 .cse7 (<= ~r1 (* 256 (div ~r1 256))) .cse8))) [2018-09-26 21:51:50,926 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,927 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,930 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,930 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,932 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,932 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,935 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,935 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,938 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,939 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,941 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,941 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,943 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,944 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,945 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,946 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,951 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 09:51:50 BoogieIcfgContainer [2018-09-26 21:51:50,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 21:51:50,952 INFO L168 Benchmark]: Toolchain (without parser) took 8340.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 449.4 MB). Peak memory consumption was 449.4 MB. Max. memory is 7.1 GB. [2018-09-26 21:51:50,953 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:51:50,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:51:50,955 INFO L168 Benchmark]: Boogie Preprocessor took 29.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:51:50,955 INFO L168 Benchmark]: RCFGBuilder took 626.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-26 21:51:50,957 INFO L168 Benchmark]: TraceAbstraction took 7629.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 417.7 MB). Peak memory consumption was 417.7 MB. Max. memory is 7.1 GB. [2018-09-26 21:51:50,962 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 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 626.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7629.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 417.7 MB). Peak memory consumption was 417.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 310]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: ((((((~mode3 == 256 * (~mode3 / 256) && ~mode1 == 256 * (~mode1 / 256)) && ~send2 <= 127) && ~mode2 == 256 * (~mode2 / 256)) && 0 <= ~send2) && 0 == ~nomsg + 1) && ~r1 <= 256 * (~r1 / 256)) || (((((((!(~p2_old == ~nomsg) && 1 <= ~mode2) && ~mode2 <= 1) && ~send2 <= 127) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1) - InvariantResult [Line: 214]: Loop Invariant Derived loop invariant: (((((~mode3 == 256 * (~mode3 / 256) && ~send2 <= 127) && 0 <= ~send2) && ~mode2 == 256 * (~mode2 / 256)) && 0 == ~nomsg + 1) && ~r1 <= 256 * (~r1 / 256)) || (((((((!(~p2_old == ~nomsg) && 1 <= ~mode2) && ~mode2 <= 1) && ~send2 <= 127) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1) - InvariantResult [Line: 259]: Loop Invariant [2018-09-26 21:51:50,975 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,975 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,977 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,977 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] Derived loop invariant: ((((((((1 <= ~mode2 && ~mode2 <= 1) && ~send2 <= 127) && (exists v_~r1_7 : int :: ~r1 == v_~r1_7 % 256 + 1 && v_~r1_7 % 256 <= 0)) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1) && !(~p2_new == ~nomsg)) || ((((((((1 <= ~mode2 && ~mode2 <= 1) && ~send2 <= 127) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1) && ~r1 <= 256 * (~r1 / 256)) && !(~p2_new == ~nomsg)) - InvariantResult [Line: 251]: Loop Invariant [2018-09-26 21:51:50,979 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,979 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,981 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,981 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] Derived loop invariant: ((((((!(~p2_old == ~nomsg) && ~send2 <= 127) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1) || (((((((~mode3 == 256 * (~mode3 / 256) && 1 <= ~mode2) && ~mode2 <= 1) && ~send2 <= 127) && 0 <= ~send2) && 0 == ~nomsg + 1) && ~r1 <= 256 * (~r1 / 256)) && !(~p2_new == ~nomsg))) || (((((((~mode3 == 256 * (~mode3 / 256) && 1 <= ~mode2) && ~mode2 <= 1) && ~send2 <= 127) && (exists v_~r1_7 : int :: ~r1 == v_~r1_7 % 256 + 1 && v_~r1_7 % 256 <= 0)) && 0 <= ~send2) && 0 == ~nomsg + 1) && !(~p2_new == ~nomsg)) - InvariantResult [Line: 299]: Loop Invariant Derived loop invariant: (((((((((assert_~arg <= 1 && !(~p2_old == ~nomsg)) && 1 <= check_~tmp~77) && 1 <= ~mode2) && ~mode2 <= 1) && ~send2 <= 127) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1) && 1 <= assert_~arg - InvariantResult [Line: 237]: Loop Invariant [2018-09-26 21:51:50,983 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,984 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,985 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,985 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] Derived loop invariant: ((((((!(~p2_old == ~nomsg) && ~send2 <= 127) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1) || (((((((~mode3 == 256 * (~mode3 / 256) && 1 <= ~mode2) && ~mode2 <= 1) && ~send2 <= 127) && 0 <= ~send2) && 0 == ~nomsg + 1) && ~r1 <= 256 * (~r1 / 256)) && !(~p2_new == ~nomsg))) || (((((((~mode3 == 256 * (~mode3 / 256) && 1 <= ~mode2) && ~mode2 <= 1) && ~send2 <= 127) && (exists v_~r1_7 : int :: ~r1 == v_~r1_7 % 256 + 1 && v_~r1_7 % 256 <= 0)) && 0 <= ~send2) && 0 == ~nomsg + 1) && !(~p2_new == ~nomsg)) - InvariantResult [Line: 278]: Loop Invariant [2018-09-26 21:51:50,987 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,987 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,989 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] [2018-09-26 21:51:50,989 WARN L389 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~r1_7,QUANTIFIED] Derived loop invariant: ((((((((!(~p2_old == ~nomsg) && 1 <= ~mode2) && ~mode2 <= 1) && ~send2 <= 127) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1) && ~r1 <= 256 * (~r1 / 256)) || ((((((((!(~p2_old == ~nomsg) && 1 <= ~mode2) && ~mode2 <= 1) && ~send2 <= 127) && (exists v_~r1_7 : int :: ~r1 == v_~r1_7 % 256 + 1 && v_~r1_7 % 256 <= 0)) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1) - InvariantResult [Line: 284]: Loop Invariant Derived loop invariant: (((((((!(~p2_old == ~nomsg) && 1 <= ~mode2) && ~mode2 <= 1) && 1 <= check_~tmp~77) && ~send2 <= 127) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1 - InvariantResult [Line: 305]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 206]: Loop Invariant Derived loop invariant: ((((((~mode3 == 256 * (~mode3 / 256) && ~mode1 == 256 * (~mode1 / 256)) && ~send2 <= 127) && ~mode2 == 256 * (~mode2 / 256)) && 0 <= ~send2) && 0 == ~nomsg + 1) && ~r1 <= 256 * (~r1 / 256)) || (((((((!(~p2_old == ~nomsg) && 1 <= ~mode2) && ~mode2 <= 1) && ~send2 <= 127) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1) - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: (((((~mode3 == 256 * (~mode3 / 256) && ~send2 <= 127) && 0 <= ~send2) && ~mode2 == 256 * (~mode2 / 256)) && 0 == ~nomsg + 1) && ~r1 <= 256 * (~r1 / 256)) || (((((((!(~p2_old == ~nomsg) && 1 <= ~mode2) && ~mode2 <= 1) && ~send2 <= 127) && 0 <= ~send2) && ~mode3 <= 1) && 1 <= ~mode3) && 0 == ~nomsg + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. SAFE Result, 7.5s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 3.8s AutomataDifference, 0.0s DeadEndRemovalTime, 1.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 163 SDtfs, 137 SDslu, 148 SDs, 0 SdLazy, 135 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 80 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 67 NumberOfFragments, 691 HoareAnnotationTreeSize, 11 FomulaSimplifications, 2266 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 199 ConstructedInterpolants, 6 QuantifiedInterpolants, 15543 SizeOfPredicates, 1 NumberOfNonLiveVariables, 197 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 148/160 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_21-51-50-997.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c_9.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_21-51-50-997.csv Received shutdown request...