java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-4eac566 [2018-09-23 19:35:55,734 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-23 19:35:55,737 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-23 19:35:55,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-09-23 19:35:55,818 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-23 19:35:55,850 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-23 19:35:55,850 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-23 19:35:55,851 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-23 19:35:55,851 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-23 19:35:55,852 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-23 19:35:55,852 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-23 19:35:55,852 INFO L133 SettingsManager]: * Use SBE=true [2018-09-23 19:35:55,853 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-23 19:35:55,853 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-23 19:35:55,853 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-23 19:35:55,853 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-23 19:35:55,853 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-23 19:35:55,854 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-23 19:35:55,854 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-23 19:35:55,854 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-23 19:35:55,854 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-23 19:35:55,856 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-23 19:35:55,856 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-23 19:35:55,856 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-23 19:35:55,856 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-23 19:35:55,857 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-23 19:35:55,857 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-23 19:35:55,857 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-23 19:35:55,857 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-23 19:35:55,858 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-23 19:35:55,858 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-23 19:35:55,858 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-23 19:35:55,858 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-23 19:35:55,858 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-23 19:35:55,859 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-23 19:35:55,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-23 19:35:55,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-23 19:35:55,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-23 19:35:55,953 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-23 19:35:55,953 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-23 19:35:55,954 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl [2018-09-23 19:35:55,955 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl' [2018-09-23 19:35:56,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-23 19:35:56,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-23 19:35:56,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-23 19:35:56,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-23 19:35:56,063 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-23 19:35:56,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:56" (1/1) ... [2018-09-23 19:35:56,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:56" (1/1) ... [2018-09-23 19:35:56,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-23 19:35:56,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-23 19:35:56,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-23 19:35:56,107 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-23 19:35:56,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:56" (1/1) ... [2018-09-23 19:35:56,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:56" (1/1) ... [2018-09-23 19:35:56,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:56" (1/1) ... [2018-09-23 19:35:56,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:56" (1/1) ... [2018-09-23 19:35:56,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:56" (1/1) ... [2018-09-23 19:35:56,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:56" (1/1) ... [2018-09-23 19:35:56,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:56" (1/1) ... [2018-09-23 19:35:56,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-23 19:35:56,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-23 19:35:56,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-23 19:35:56,139 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-23 19:35:56,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:56" (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 [2018-09-23 19:35:56,210 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-23 19:35:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-23 19:35:56,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-23 19:35:56,751 INFO L354 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-23 19:35:56,752 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 07:35:56 BoogieIcfgContainer [2018-09-23 19:35:56,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-23 19:35:56,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-23 19:35:56,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-23 19:35:56,756 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-23 19:35:56,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:35:56" (1/2) ... [2018-09-23 19:35:56,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350790ea and model type pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.09 07:35:56, skipping insertion in model container [2018-09-23 19:35:56,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 07:35:56" (2/2) ... [2018-09-23 19:35:56,759 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl [2018-09-23 19:35:56,769 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-23 19:35:56,777 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-23 19:35:56,828 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-23 19:35:56,829 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-23 19:35:56,829 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-23 19:35:56,829 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-23 19:35:56,829 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-23 19:35:56,829 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-23 19:35:56,829 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-23 19:35:56,830 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-23 19:35:56,830 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-23 19:35:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-09-23 19:35:56,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-23 19:35:56,853 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:56,854 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-23 19:35:56,855 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:56,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:56,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1823027031, now seen corresponding path program 1 times [2018-09-23 19:35:56,864 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:56,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:56,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:56,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:56,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:35:57,144 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 19:35:57,144 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-23 19:35:57,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-23 19:35:57,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-23 19:35:57,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-23 19:35:57,166 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2018-09-23 19:35:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:57,308 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2018-09-23 19:35:57,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-23 19:35:57,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-09-23 19:35:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:57,322 INFO L225 Difference]: With dead ends: 43 [2018-09-23 19:35:57,322 INFO L226 Difference]: Without dead ends: 39 [2018-09-23 19:35:57,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-23 19:35:57,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-23 19:35:57,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 17. [2018-09-23 19:35:57,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-23 19:35:57,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2018-09-23 19:35:57,364 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 14 [2018-09-23 19:35:57,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:57,364 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-09-23 19:35:57,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-23 19:35:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2018-09-23 19:35:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-23 19:35:57,365 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:57,365 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-23 19:35:57,366 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:57,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:57,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1823086613, now seen corresponding path program 1 times [2018-09-23 19:35:57,367 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:57,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:57,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:57,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:57,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:35:57,491 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 19:35:57,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-23 19:35:57,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-23 19:35:57,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-23 19:35:57,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-23 19:35:57,494 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand 4 states. [2018-09-23 19:35:57,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:57,630 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2018-09-23 19:35:57,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-23 19:35:57,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-09-23 19:35:57,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:57,632 INFO L225 Difference]: With dead ends: 47 [2018-09-23 19:35:57,632 INFO L226 Difference]: Without dead ends: 31 [2018-09-23 19:35:57,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-23 19:35:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-23 19:35:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2018-09-23 19:35:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-23 19:35:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2018-09-23 19:35:57,640 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 14 [2018-09-23 19:35:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:57,640 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2018-09-23 19:35:57,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-23 19:35:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2018-09-23 19:35:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-23 19:35:57,641 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:57,641 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-23 19:35:57,642 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:57,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:57,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1765828311, now seen corresponding path program 1 times [2018-09-23 19:35:57,642 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:57,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:57,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:57,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:57,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:35:57,732 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 19:35:57,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-23 19:35:57,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-23 19:35:57,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-23 19:35:57,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:35:57,734 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 3 states. [2018-09-23 19:35:57,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:57,759 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2018-09-23 19:35:57,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-23 19:35:57,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-09-23 19:35:57,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:57,762 INFO L225 Difference]: With dead ends: 49 [2018-09-23 19:35:57,762 INFO L226 Difference]: Without dead ends: 31 [2018-09-23 19:35:57,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:35:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-23 19:35:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-23 19:35:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-23 19:35:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2018-09-23 19:35:57,773 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 14 [2018-09-23 19:35:57,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:57,774 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2018-09-23 19:35:57,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-23 19:35:57,774 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2018-09-23 19:35:57,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-23 19:35:57,775 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:57,775 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-23 19:35:57,775 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:57,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:57,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2023993749, now seen corresponding path program 1 times [2018-09-23 19:35:57,776 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:57,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:57,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:57,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:57,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:35:57,864 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 19:35:57,864 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-23 19:35:57,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-23 19:35:57,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-23 19:35:57,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:35:57,866 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 3 states. [2018-09-23 19:35:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:57,910 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2018-09-23 19:35:57,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-23 19:35:57,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-09-23 19:35:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:57,912 INFO L225 Difference]: With dead ends: 51 [2018-09-23 19:35:57,912 INFO L226 Difference]: Without dead ends: 33 [2018-09-23 19:35:57,913 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:35:57,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-23 19:35:57,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-09-23 19:35:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-23 19:35:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2018-09-23 19:35:57,921 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 14 [2018-09-23 19:35:57,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:57,921 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2018-09-23 19:35:57,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-23 19:35:57,922 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2018-09-23 19:35:57,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-23 19:35:57,923 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:57,923 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-23 19:35:57,923 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:57,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:57,924 INFO L82 PathProgramCache]: Analyzing trace with hash 550402615, now seen corresponding path program 1 times [2018-09-23 19:35:57,924 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:57,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:57,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:57,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:57,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:35:58,158 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:58,159 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 [2018-09-23 19:35:58,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:58,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:35:58,353 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-23 19:35:58,354 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-09-23 19:35:58,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-23 19:35:58,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-23 19:35:58,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-23 19:35:58,355 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 6 states. [2018-09-23 19:35:58,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:58,573 INFO L93 Difference]: Finished difference Result 127 states and 160 transitions. [2018-09-23 19:35:58,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-23 19:35:58,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-09-23 19:35:58,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:58,578 INFO L225 Difference]: With dead ends: 127 [2018-09-23 19:35:58,579 INFO L226 Difference]: Without dead ends: 97 [2018-09-23 19:35:58,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-09-23 19:35:58,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-23 19:35:58,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 79. [2018-09-23 19:35:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-23 19:35:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2018-09-23 19:35:58,614 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 26 [2018-09-23 19:35:58,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:58,615 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2018-09-23 19:35:58,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-23 19:35:58,615 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2018-09-23 19:35:58,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-23 19:35:58,616 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:58,616 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-23 19:35:58,617 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:58,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:58,617 INFO L82 PathProgramCache]: Analyzing trace with hash 943429625, now seen corresponding path program 1 times [2018-09-23 19:35:58,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:58,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:58,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:58,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:58,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:59,078 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2018-09-23 19:35:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:35:59,082 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:35:59,082 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:35:59,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:59,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:35:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:35:59,260 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-23 19:35:59,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-09-23 19:35:59,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-23 19:35:59,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-23 19:35:59,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-23 19:35:59,261 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand 6 states. [2018-09-23 19:35:59,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:59,888 INFO L93 Difference]: Finished difference Result 233 states and 295 transitions. [2018-09-23 19:35:59,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-23 19:35:59,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-09-23 19:35:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:59,894 INFO L225 Difference]: With dead ends: 233 [2018-09-23 19:35:59,894 INFO L226 Difference]: Without dead ends: 145 [2018-09-23 19:35:59,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-23 19:35:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-23 19:35:59,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2018-09-23 19:35:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-23 19:35:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 157 transitions. [2018-09-23 19:35:59,931 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 157 transitions. Word has length 26 [2018-09-23 19:35:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:59,932 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 157 transitions. [2018-09-23 19:35:59,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-23 19:35:59,932 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 157 transitions. [2018-09-23 19:35:59,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-23 19:35:59,933 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:35:59,933 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-23 19:35:59,933 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:35:59,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:35:59,934 INFO L82 PathProgramCache]: Analyzing trace with hash -477798729, now seen corresponding path program 1 times [2018-09-23 19:35:59,934 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:35:59,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:35:59,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:59,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:35:59,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:35:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:35:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-09-23 19:35:59,984 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 19:35:59,985 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-23 19:35:59,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-23 19:35:59,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-23 19:35:59,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:35:59,986 INFO L87 Difference]: Start difference. First operand 127 states and 157 transitions. Second operand 3 states. [2018-09-23 19:35:59,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:35:59,992 INFO L93 Difference]: Finished difference Result 127 states and 157 transitions. [2018-09-23 19:35:59,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-23 19:35:59,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-09-23 19:35:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:35:59,993 INFO L225 Difference]: With dead ends: 127 [2018-09-23 19:35:59,993 INFO L226 Difference]: Without dead ends: 0 [2018-09-23 19:35:59,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:35:59,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-23 19:35:59,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-23 19:35:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-23 19:35:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-23 19:35:59,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-09-23 19:35:59,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:35:59,996 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-23 19:35:59,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-23 19:35:59,996 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-23 19:35:59,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-23 19:36:00,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-23 19:36:00,028 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-23 19:36:00,055 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-23 19:36:00,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-23 19:36:00,510 INFO L422 ceAbstractionStarter]: At program point L225(lines 225 235) the Hoare annotation is: (let ((.cse0 (= 0 (+ ~nomsg 1)))) (or (and (<= 1 ~mode2) .cse0 (not (= (+ ~p1_old 1) 0))) (and (= ~mode1 1) (<= ~r1 0) (= ~mode2 0) .cse0 (<= 0 ~p1_new)))) [2018-09-23 19:36:00,510 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 47 318) no Hoare annotation was computed. [2018-09-23 19:36:00,510 INFO L422 ceAbstractionStarter]: At program point L283(lines 279 284) the Hoare annotation is: (and (= ~mode1 1) (<= 1 ULTIMATE.start_check_~tmp~77) (= ~mode1 ~mode2) (= 0 (+ ~nomsg 1)) (not (= (+ ~p1_old 1) 0))) [2018-09-23 19:36:00,511 INFO L422 ceAbstractionStarter]: At program point L240(lines 234 241) the Hoare annotation is: (and (= ~mode1 1) (<= ~r1 0) (= ~mode1 ~mode2) (= 0 (+ ~nomsg 1)) (<= 0 ~p1_new)) [2018-09-23 19:36:00,511 INFO L422 ceAbstractionStarter]: At program point L304(lines 304 310) the Hoare annotation is: (and (= ~mode1 1) (not (= 0 ULTIMATE.start_assert_~arg)) (= ~mode1 ~mode2) (not (= 0 |ULTIMATE.start_assert_#in~arg|)) (= 0 (+ ~nomsg 1)) (not (= (+ ~p1_old 1) 0))) [2018-09-23 19:36:00,511 INFO L422 ceAbstractionStarter]: At program point L300(lines 296 301) the Hoare annotation is: (and (= ~mode1 1) (= ~mode1 ~mode2) (not (= 0 |ULTIMATE.start_assert_#in~arg|)) (= 0 (+ ~nomsg 1)) (not (= (+ ~p1_old 1) 0))) [2018-09-23 19:36:00,512 INFO L422 ceAbstractionStarter]: At program point L199(lines 199 212) the Hoare annotation is: (let ((.cse0 (= 0 (+ ~nomsg 1)))) (or (and (= ~mode1 1) (= ~mode1 ~mode2) .cse0 (not (= (+ ~p1_old 1) 0))) (and (<= ~r1 0) (= ~mode2 0) (<= (+ ~mode1 256) 0) .cse0))) [2018-09-23 19:36:00,512 INFO L422 ceAbstractionStarter]: At program point L290(lines 290 297) the Hoare annotation is: (and (= ~mode1 1) (<= 1 ULTIMATE.start_check_~tmp~77) (= ~mode1 ~mode2) (= 0 (+ ~nomsg 1)) (not (= (+ ~p1_old 1) 0)) (<= 1 ULTIMATE.start_main_~c1~84)) [2018-09-23 19:36:00,512 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 47 318) no Hoare annotation was computed. [2018-09-23 19:36:00,512 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 47 318) no Hoare annotation was computed. [2018-09-23 19:36:00,512 INFO L422 ceAbstractionStarter]: At program point L220(lines 211 221) the Hoare annotation is: (let ((.cse0 (= 0 (+ ~nomsg 1)))) (or (and (<= 1 ~mode2) .cse0 (not (= (+ ~p1_old 1) 0))) (and (= ~mode1 1) (<= ~r1 0) (= ~mode2 0) .cse0 (<= 0 ~p1_new)))) [2018-09-23 19:36:00,513 INFO L422 ceAbstractionStarter]: At program point L315(lines 193 315) the Hoare annotation is: (let ((.cse0 (= 0 (+ ~nomsg 1)))) (or (and (= ~mode1 1) (= ~mode1 ~mode2) .cse0 (not (= (+ ~p1_old 1) 0))) (and (<= ~r1 0) (= ~mode2 0) (<= (+ ~mode1 256) 0) .cse0))) [2018-09-23 19:36:00,513 INFO L422 ceAbstractionStarter]: At program point L245(lines 245 254) the Hoare annotation is: (and (= ~mode1 1) (<= ~r1 0) (= ~mode1 ~mode2) (= 0 (+ ~nomsg 1)) (<= 0 ~p1_new)) [2018-09-23 19:36:00,513 INFO L422 ceAbstractionStarter]: At program point L309(lines 309 316) the Hoare annotation is: false [2018-09-23 19:36:00,513 INFO L422 ceAbstractionStarter]: At program point L272(lines 272 280) the Hoare annotation is: (and (= ~mode1 1) (<= ~r1 0) (= ~mode1 ~mode2) (= 0 (+ ~nomsg 1)) (not (= (+ ~p1_old 1) 0))) [2018-09-23 19:36:00,514 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 317) no Hoare annotation was computed. [2018-09-23 19:36:00,514 INFO L422 ceAbstractionStarter]: At program point L260(lines 253 261) the Hoare annotation is: (and (= ~mode1 1) (<= ~r1 0) (= ~mode1 ~mode2) (= 0 (+ ~nomsg 1)) (<= 0 ~p1_new)) [2018-09-23 19:36:00,530 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.09 07:36:00 BoogieIcfgContainer [2018-09-23 19:36:00,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-23 19:36:00,532 INFO L168 Benchmark]: Toolchain (without parser) took 4472.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 224.7 MB). Peak memory consumption was 224.7 MB. Max. memory is 7.1 GB. [2018-09-23 19:36:00,533 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 19:36:00,534 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 19:36:00,534 INFO L168 Benchmark]: Boogie Preprocessor took 30.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 19:36:00,535 INFO L168 Benchmark]: RCFGBuilder took 613.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-23 19:36:00,536 INFO L168 Benchmark]: TraceAbstraction took 3777.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 193.0 MB). Peak memory consumption was 193.0 MB. Max. memory is 7.1 GB. [2018-09-23 19:36:00,540 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 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.88 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 613.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3777.85 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 193.0 MB). Peak memory consumption was 193.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 317]: 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: 234]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~r1 <= 0) && ~mode1 == ~mode2) && 0 == ~nomsg + 1) && 0 <= ~p1_new - InvariantResult [Line: 272]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~r1 <= 0) && ~mode1 == ~mode2) && 0 == ~nomsg + 1) && !(~p1_old + 1 == 0) - InvariantResult [Line: 279]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && 1 <= check_~tmp~77) && ~mode1 == ~mode2) && 0 == ~nomsg + 1) && !(~p1_old + 1 == 0) - InvariantResult [Line: 211]: Loop Invariant Derived loop invariant: ((1 <= ~mode2 && 0 == ~nomsg + 1) && !(~p1_old + 1 == 0)) || ((((~mode1 == 1 && ~r1 <= 0) && ~mode2 == 0) && 0 == ~nomsg + 1) && 0 <= ~p1_new) - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~mode1 == ~mode2) && 0 == ~nomsg + 1) && !(~p1_old + 1 == 0)) || (((~r1 <= 0 && ~mode2 == 0) && ~mode1 + 256 <= 0) && 0 == ~nomsg + 1) - InvariantResult [Line: 309]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 245]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~r1 <= 0) && ~mode1 == ~mode2) && 0 == ~nomsg + 1) && 0 <= ~p1_new - InvariantResult [Line: 225]: Loop Invariant Derived loop invariant: ((1 <= ~mode2 && 0 == ~nomsg + 1) && !(~p1_old + 1 == 0)) || ((((~mode1 == 1 && ~r1 <= 0) && ~mode2 == 0) && 0 == ~nomsg + 1) && 0 <= ~p1_new) - InvariantResult [Line: 296]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~mode1 == ~mode2) && !(0 == assert_#in~arg)) && 0 == ~nomsg + 1) && !(~p1_old + 1 == 0) - InvariantResult [Line: 290]: Loop Invariant Derived loop invariant: ((((~mode1 == 1 && 1 <= check_~tmp~77) && ~mode1 == ~mode2) && 0 == ~nomsg + 1) && !(~p1_old + 1 == 0)) && 1 <= main_~c1~84 - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~mode1 == ~mode2) && 0 == ~nomsg + 1) && !(~p1_old + 1 == 0)) || (((~r1 <= 0 && ~mode2 == 0) && ~mode1 + 256 <= 0) && 0 == ~nomsg + 1) - InvariantResult [Line: 304]: Loop Invariant Derived loop invariant: ((((~mode1 == 1 && !(0 == assert_~arg)) && ~mode1 == ~mode2) && !(0 == assert_#in~arg)) && 0 == ~nomsg + 1) && !(~p1_old + 1 == 0) - InvariantResult [Line: 253]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~r1 <= 0) && ~mode1 == ~mode2) && 0 == ~nomsg + 1) && 0 <= ~p1_new - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. SAFE Result, 3.6s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 158 SDtfs, 212 SDslu, 275 SDs, 0 SdLazy, 119 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred 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: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 70 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 39 NumberOfFragments, 310 HoareAnnotationTreeSize, 13 FomulaSimplifications, 521 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 111 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 10068 SizeOfPredicates, 0 NumberOfNonLiveVariables, 451 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 56/60 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.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-23_19-36-00-557.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-23_19-36-00-557.csv Received shutdown request...