java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sep10_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 00:52:54,526 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 00:52:54,527 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 00:52:54,536 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 00:52:54,536 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 00:52:54,536 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 00:52:54,537 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 00:52:54,538 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 00:52:54,539 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 00:52:54,540 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 00:52:54,540 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 00:52:54,540 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 00:52:54,541 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 00:52:54,541 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 00:52:54,542 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 00:52:54,543 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 00:52:54,544 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 00:52:54,545 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 00:52:54,546 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 00:52:54,546 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 00:52:54,548 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 00:52:54,551 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-30 00:52:54,559 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 00:52:54,560 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 00:52:54,560 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 00:52:54,560 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 00:52:54,560 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 00:52:54,560 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 00:52:54,561 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 00:52:54,561 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 00:52:54,561 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 00:52:54,561 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 00:52:54,561 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 00:52:54,561 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 00:52:54,561 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 00:52:54,561 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 00:52:54,561 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 00:52:54,561 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 00:52:54,562 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 00:52:54,562 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 00:52:54,562 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 00:52:54,562 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 00:52:54,562 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 00:52:54,562 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 00:52:54,562 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 00:52:54,564 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 00:52:54,565 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 00:52:54,565 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 00:52:54,565 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 00:52:54,565 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 00:52:54,565 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 00:52:54,565 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 00:52:54,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 00:52:54,565 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 00:52:54,566 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 00:52:54,566 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 00:52:54,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 00:52:54,597 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 00:52:54,601 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 00:52:54,602 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 00:52:54,602 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 00:52:54,603 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep10_true-unreach-call.i [2018-01-30 00:52:54,667 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 00:52:54,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-30 00:52:54,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 00:52:54,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 00:52:54,672 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 00:52:54,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 12:52:54" (1/1) ... [2018-01-30 00:52:54,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb441a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:52:54, skipping insertion in model container [2018-01-30 00:52:54,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 12:52:54" (1/1) ... [2018-01-30 00:52:54,683 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 00:52:54,695 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 00:52:54,765 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 00:52:54,777 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 00:52:54,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:52:54 WrapperNode [2018-01-30 00:52:54,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 00:52:54,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 00:52:54,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 00:52:54,782 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 00:52:54,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:52:54" (1/1) ... [2018-01-30 00:52:54,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:52:54" (1/1) ... [2018-01-30 00:52:54,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:52:54" (1/1) ... [2018-01-30 00:52:54,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:52:54" (1/1) ... [2018-01-30 00:52:54,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:52:54" (1/1) ... [2018-01-30 00:52:54,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:52:54" (1/1) ... [2018-01-30 00:52:54,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:52:54" (1/1) ... [2018-01-30 00:52:54,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 00:52:54,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 00:52:54,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 00:52:54,801 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 00:52:54,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:52:54" (1/1) ... No working directory specified, using /home/daniel/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 [2018-01-30 00:52:54,837 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 00:52:54,837 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 00:52:54,837 INFO L136 BoogieDeclarations]: Found implementation of procedure sep [2018-01-30 00:52:54,837 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 00:52:54,837 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-30 00:52:54,837 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-30 00:52:54,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-30 00:52:54,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-30 00:52:54,838 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-30 00:52:54,838 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 00:52:54,838 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-30 00:52:54,838 INFO L128 BoogieDeclarations]: Found specification of procedure sep [2018-01-30 00:52:54,838 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 00:52:54,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 00:52:54,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 00:52:55,156 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 00:52:55,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 12:52:55 BoogieIcfgContainer [2018-01-30 00:52:55,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 00:52:55,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 00:52:55,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 00:52:55,159 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 00:52:55,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 12:52:54" (1/3) ... [2018-01-30 00:52:55,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303ff5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 12:52:55, skipping insertion in model container [2018-01-30 00:52:55,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:52:54" (2/3) ... [2018-01-30 00:52:55,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303ff5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 12:52:55, skipping insertion in model container [2018-01-30 00:52:55,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 12:52:55" (3/3) ... [2018-01-30 00:52:55,161 INFO L107 eAbstractionObserver]: Analyzing ICFG sep10_true-unreach-call.i [2018-01-30 00:52:55,166 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 00:52:55,170 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 00:52:55,195 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 00:52:55,195 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 00:52:55,195 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 00:52:55,195 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 00:52:55,195 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 00:52:55,195 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 00:52:55,195 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 00:52:55,195 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 00:52:55,196 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 00:52:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2018-01-30 00:52:55,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-01-30 00:52:55,210 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:52:55,210 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:52:55,210 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation]=== [2018-01-30 00:52:55,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1329501872, now seen corresponding path program 1 times [2018-01-30 00:52:55,214 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:52:55,214 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:52:55,243 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:55,243 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:52:55,243 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:55,272 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:52:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-01-30 00:52:55,326 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:52:55,326 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 00:52:55,327 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 00:52:55,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 00:52:55,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 00:52:55,336 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 2 states. [2018-01-30 00:52:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:52:55,353 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2018-01-30 00:52:55,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 00:52:55,353 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 61 [2018-01-30 00:52:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:52:55,359 INFO L225 Difference]: With dead ends: 146 [2018-01-30 00:52:55,359 INFO L226 Difference]: Without dead ends: 76 [2018-01-30 00:52:55,361 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 00:52:55,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-30 00:52:55,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-01-30 00:52:55,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-30 00:52:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2018-01-30 00:52:55,386 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 61 [2018-01-30 00:52:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:52:55,387 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2018-01-30 00:52:55,387 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 00:52:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2018-01-30 00:52:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-01-30 00:52:55,389 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:52:55,389 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:52:55,389 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation]=== [2018-01-30 00:52:55,389 INFO L82 PathProgramCache]: Analyzing trace with hash 695991780, now seen corresponding path program 1 times [2018-01-30 00:52:55,389 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:52:55,389 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:52:55,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:55,390 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:52:55,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:55,457 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:52:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-30 00:52:55,539 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:52:55,539 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 00:52:55,540 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 00:52:55,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 00:52:55,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 00:52:55,540 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand 3 states. [2018-01-30 00:52:55,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:52:55,626 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2018-01-30 00:52:55,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 00:52:55,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-01-30 00:52:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:52:55,627 INFO L225 Difference]: With dead ends: 139 [2018-01-30 00:52:55,627 INFO L226 Difference]: Without dead ends: 83 [2018-01-30 00:52:55,628 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 00:52:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-01-30 00:52:55,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2018-01-30 00:52:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-01-30 00:52:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2018-01-30 00:52:55,632 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 66 [2018-01-30 00:52:55,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:52:55,633 INFO L432 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2018-01-30 00:52:55,633 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 00:52:55,633 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2018-01-30 00:52:55,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-01-30 00:52:55,634 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:52:55,634 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:52:55,634 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation]=== [2018-01-30 00:52:55,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2128927245, now seen corresponding path program 1 times [2018-01-30 00:52:55,634 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:52:55,634 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:52:55,635 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:55,635 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:52:55,635 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:55,644 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:52:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-30 00:52:55,772 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:52:55,772 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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) [2018-01-30 00:52:55,788 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:52:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:55,833 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:52:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-30 00:52:55,876 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:52:55,877 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-30 00:52:55,877 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 00:52:55,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 00:52:55,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 00:52:55,877 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 6 states. [2018-01-30 00:52:56,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:52:56,104 INFO L93 Difference]: Finished difference Result 161 states and 176 transitions. [2018-01-30 00:52:56,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 00:52:56,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2018-01-30 00:52:56,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:52:56,105 INFO L225 Difference]: With dead ends: 161 [2018-01-30 00:52:56,105 INFO L226 Difference]: Without dead ends: 105 [2018-01-30 00:52:56,105 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-30 00:52:56,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-01-30 00:52:56,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2018-01-30 00:52:56,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-01-30 00:52:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2018-01-30 00:52:56,110 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 74 [2018-01-30 00:52:56,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:52:56,110 INFO L432 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2018-01-30 00:52:56,110 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 00:52:56,110 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2018-01-30 00:52:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-01-30 00:52:56,112 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:52:56,112 INFO L350 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:52:56,112 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation]=== [2018-01-30 00:52:56,112 INFO L82 PathProgramCache]: Analyzing trace with hash -365635734, now seen corresponding path program 1 times [2018-01-30 00:52:56,112 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:52:56,112 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:52:56,113 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:56,113 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:52:56,113 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:56,126 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:52:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-01-30 00:52:56,227 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:52:56,227 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 00:52:56,242 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:52:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:56,278 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:52:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-01-30 00:52:56,403 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:52:56,403 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-01-30 00:52:56,403 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 00:52:56,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 00:52:56,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 00:52:56,404 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 6 states. [2018-01-30 00:52:56,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:52:56,518 INFO L93 Difference]: Finished difference Result 179 states and 194 transitions. [2018-01-30 00:52:56,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 00:52:56,519 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-01-30 00:52:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:52:56,521 INFO L225 Difference]: With dead ends: 179 [2018-01-30 00:52:56,522 INFO L226 Difference]: Without dead ends: 122 [2018-01-30 00:52:56,522 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-30 00:52:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-01-30 00:52:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 105. [2018-01-30 00:52:56,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-01-30 00:52:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2018-01-30 00:52:56,528 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 115 [2018-01-30 00:52:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:52:56,528 INFO L432 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2018-01-30 00:52:56,528 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 00:52:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2018-01-30 00:52:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-01-30 00:52:56,529 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:52:56,530 INFO L350 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:52:56,530 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation]=== [2018-01-30 00:52:56,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1829682989, now seen corresponding path program 1 times [2018-01-30 00:52:56,530 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:52:56,530 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:52:56,530 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:56,531 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:52:56,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:56,553 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:52:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-01-30 00:52:56,636 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:52:56,636 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:52:56,641 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:52:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:56,692 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:52:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2018-01-30 00:52:56,936 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:52:56,936 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-30 00:52:56,937 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 00:52:56,937 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 00:52:56,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-30 00:52:56,937 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand 10 states. [2018-01-30 00:52:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:52:57,089 INFO L93 Difference]: Finished difference Result 206 states and 219 transitions. [2018-01-30 00:52:57,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 00:52:57,089 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2018-01-30 00:52:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:52:57,090 INFO L225 Difference]: With dead ends: 206 [2018-01-30 00:52:57,090 INFO L226 Difference]: Without dead ends: 131 [2018-01-30 00:52:57,091 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-30 00:52:57,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-30 00:52:57,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2018-01-30 00:52:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-01-30 00:52:57,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 127 transitions. [2018-01-30 00:52:57,095 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 127 transitions. Word has length 156 [2018-01-30 00:52:57,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:52:57,095 INFO L432 AbstractCegarLoop]: Abstraction has 121 states and 127 transitions. [2018-01-30 00:52:57,095 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 00:52:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 127 transitions. [2018-01-30 00:52:57,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-01-30 00:52:57,097 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:52:57,097 INFO L350 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:52:57,097 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation]=== [2018-01-30 00:52:57,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1061902835, now seen corresponding path program 2 times [2018-01-30 00:52:57,097 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:52:57,097 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:52:57,098 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:57,098 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:52:57,098 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:57,114 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:52:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-01-30 00:52:57,274 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:52:57,274 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:52:57,281 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:52:57,291 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:52:57,314 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:52:57,320 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:52:57,324 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:52:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2018-01-30 00:52:57,529 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:52:57,529 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-30 00:52:57,529 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 00:52:57,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 00:52:57,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-30 00:52:57,530 INFO L87 Difference]: Start difference. First operand 121 states and 127 transitions. Second operand 14 states. [2018-01-30 00:52:57,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:52:57,722 INFO L93 Difference]: Finished difference Result 244 states and 262 transitions. [2018-01-30 00:52:57,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 00:52:57,723 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2018-01-30 00:52:57,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:52:57,723 INFO L225 Difference]: With dead ends: 244 [2018-01-30 00:52:57,723 INFO L226 Difference]: Without dead ends: 161 [2018-01-30 00:52:57,724 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-01-30 00:52:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-30 00:52:57,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 144. [2018-01-30 00:52:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-30 00:52:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 151 transitions. [2018-01-30 00:52:57,728 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 151 transitions. Word has length 172 [2018-01-30 00:52:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:52:57,729 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 151 transitions. [2018-01-30 00:52:57,729 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 00:52:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 151 transitions. [2018-01-30 00:52:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-01-30 00:52:57,730 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:52:57,730 INFO L350 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:52:57,732 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation]=== [2018-01-30 00:52:57,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1386807338, now seen corresponding path program 3 times [2018-01-30 00:52:57,732 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:52:57,732 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:52:57,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:57,733 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:52:57,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:57,767 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:52:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2018-01-30 00:52:58,098 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:52:58,098 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:52:58,103 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:52:58,113 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:52:58,118 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:52:58,132 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:52:58,143 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:52:58,145 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:52:58,148 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:52:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 238 proven. 12 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-01-30 00:52:58,204 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:52:58,204 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-30 00:52:58,204 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 00:52:58,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 00:52:58,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 00:52:58,205 INFO L87 Difference]: Start difference. First operand 144 states and 151 transitions. Second operand 9 states. [2018-01-30 00:52:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:52:58,245 INFO L93 Difference]: Finished difference Result 218 states and 229 transitions. [2018-01-30 00:52:58,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 00:52:58,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2018-01-30 00:52:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:52:58,246 INFO L225 Difference]: With dead ends: 218 [2018-01-30 00:52:58,246 INFO L226 Difference]: Without dead ends: 157 [2018-01-30 00:52:58,247 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-01-30 00:52:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-30 00:52:58,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2018-01-30 00:52:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-30 00:52:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 159 transitions. [2018-01-30 00:52:58,252 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 159 transitions. Word has length 213 [2018-01-30 00:52:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:52:58,253 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 159 transitions. [2018-01-30 00:52:58,253 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 00:52:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 159 transitions. [2018-01-30 00:52:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-01-30 00:52:58,254 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:52:58,254 INFO L350 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:52:58,254 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation]=== [2018-01-30 00:52:58,255 INFO L82 PathProgramCache]: Analyzing trace with hash 670583251, now seen corresponding path program 4 times [2018-01-30 00:52:58,255 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:52:58,255 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:52:58,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:58,255 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:52:58,255 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:58,269 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:52:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2018-01-30 00:52:58,558 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:52:58,558 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:52:58,563 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:52:58,588 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:52:58,591 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:52:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2018-01-30 00:52:58,640 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:52:58,641 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-01-30 00:52:58,641 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 00:52:58,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 00:52:58,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 00:52:58,641 INFO L87 Difference]: Start difference. First operand 152 states and 159 transitions. Second operand 13 states. [2018-01-30 00:52:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:52:58,803 INFO L93 Difference]: Finished difference Result 271 states and 285 transitions. [2018-01-30 00:52:58,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 00:52:58,812 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 221 [2018-01-30 00:52:58,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:52:58,813 INFO L225 Difference]: With dead ends: 271 [2018-01-30 00:52:58,813 INFO L226 Difference]: Without dead ends: 165 [2018-01-30 00:52:58,814 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2018-01-30 00:52:58,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-01-30 00:52:58,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 160. [2018-01-30 00:52:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-01-30 00:52:58,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 167 transitions. [2018-01-30 00:52:58,817 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 167 transitions. Word has length 221 [2018-01-30 00:52:58,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:52:58,817 INFO L432 AbstractCegarLoop]: Abstraction has 160 states and 167 transitions. [2018-01-30 00:52:58,817 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 00:52:58,817 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 167 transitions. [2018-01-30 00:52:58,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-01-30 00:52:58,823 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:52:58,823 INFO L350 BasicCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:52:58,823 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation]=== [2018-01-30 00:52:58,823 INFO L82 PathProgramCache]: Analyzing trace with hash 71674890, now seen corresponding path program 5 times [2018-01-30 00:52:58,823 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:52:58,823 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:52:58,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:58,824 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:52:58,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:58,839 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:52:59,046 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2018-01-30 00:52:59,047 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:52:59,047 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:52:59,051 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:52:59,060 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:52:59,064 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:52:59,069 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:52:59,076 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:52:59,077 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:52:59,079 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:52:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 232 proven. 39 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2018-01-30 00:52:59,174 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:52:59,174 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2018-01-30 00:52:59,174 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 00:52:59,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 00:52:59,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-01-30 00:52:59,175 INFO L87 Difference]: Start difference. First operand 160 states and 167 transitions. Second operand 20 states. [2018-01-30 00:52:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:52:59,419 INFO L93 Difference]: Finished difference Result 306 states and 326 transitions. [2018-01-30 00:52:59,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 00:52:59,420 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 229 [2018-01-30 00:52:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:52:59,420 INFO L225 Difference]: With dead ends: 306 [2018-01-30 00:52:59,420 INFO L226 Difference]: Without dead ends: 200 [2018-01-30 00:52:59,421 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 00:52:59,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-01-30 00:52:59,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2018-01-30 00:52:59,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-30 00:52:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 191 transitions. [2018-01-30 00:52:59,424 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 191 transitions. Word has length 229 [2018-01-30 00:52:59,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:52:59,425 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 191 transitions. [2018-01-30 00:52:59,425 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 00:52:59,425 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 191 transitions. [2018-01-30 00:52:59,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-01-30 00:52:59,426 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:52:59,427 INFO L350 BasicCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:52:59,427 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation]=== [2018-01-30 00:52:59,427 INFO L82 PathProgramCache]: Analyzing trace with hash 831208191, now seen corresponding path program 6 times [2018-01-30 00:52:59,427 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:52:59,427 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:52:59,427 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:59,428 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:52:59,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:52:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:52:59,440 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:52:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 852 trivial. 0 not checked. [2018-01-30 00:52:59,833 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:52:59,833 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:52:59,839 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:52:59,850 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:52:59,852 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:52:59,856 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:52:59,861 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:52:59,867 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:52:59,881 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:52:59,905 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:52:59,907 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:52:59,909 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 636 proven. 74 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-01-30 00:53:00,043 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:00,043 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2018-01-30 00:53:00,043 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 00:53:00,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 00:53:00,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2018-01-30 00:53:00,044 INFO L87 Difference]: Start difference. First operand 183 states and 191 transitions. Second operand 27 states. [2018-01-30 00:53:00,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:00,466 INFO L93 Difference]: Finished difference Result 344 states and 366 transitions. [2018-01-30 00:53:00,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-30 00:53:00,466 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 270 [2018-01-30 00:53:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:00,467 INFO L225 Difference]: With dead ends: 344 [2018-01-30 00:53:00,467 INFO L226 Difference]: Without dead ends: 223 [2018-01-30 00:53:00,468 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=478, Invalid=1972, Unknown=0, NotChecked=0, Total=2450 [2018-01-30 00:53:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-01-30 00:53:00,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 206. [2018-01-30 00:53:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-30 00:53:00,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 215 transitions. [2018-01-30 00:53:00,471 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 215 transitions. Word has length 270 [2018-01-30 00:53:00,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:00,471 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 215 transitions. [2018-01-30 00:53:00,471 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 00:53:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 215 transitions. [2018-01-30 00:53:00,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-01-30 00:53:00,472 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:00,473 INFO L350 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:00,473 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation]=== [2018-01-30 00:53:00,473 INFO L82 PathProgramCache]: Analyzing trace with hash -763014280, now seen corresponding path program 7 times [2018-01-30 00:53:00,473 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:00,473 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:00,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:00,474 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:00,474 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:00,487 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2018-01-30 00:53:00,864 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:00,864 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:00,869 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:53:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:00,910 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1481 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2018-01-30 00:53:01,101 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:01,101 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-30 00:53:01,101 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:53:01,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:53:01,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:53:01,102 INFO L87 Difference]: Start difference. First operand 206 states and 215 transitions. Second operand 19 states. [2018-01-30 00:53:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:01,237 INFO L93 Difference]: Finished difference Result 355 states and 373 transitions. [2018-01-30 00:53:01,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 00:53:01,238 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 311 [2018-01-30 00:53:01,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:01,238 INFO L225 Difference]: With dead ends: 355 [2018-01-30 00:53:01,238 INFO L226 Difference]: Without dead ends: 219 [2018-01-30 00:53:01,239 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 00:53:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-30 00:53:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 214. [2018-01-30 00:53:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-01-30 00:53:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 223 transitions. [2018-01-30 00:53:01,242 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 223 transitions. Word has length 311 [2018-01-30 00:53:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:01,242 INFO L432 AbstractCegarLoop]: Abstraction has 214 states and 223 transitions. [2018-01-30 00:53:01,242 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:53:01,242 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 223 transitions. [2018-01-30 00:53:01,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-01-30 00:53:01,243 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:01,243 INFO L350 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 9, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:01,243 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation]=== [2018-01-30 00:53:01,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1408264465, now seen corresponding path program 8 times [2018-01-30 00:53:01,244 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:01,244 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:01,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:01,244 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:53:01,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:01,257 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2018-01-30 00:53:01,632 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:01,632 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:01,637 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:53:01,649 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:01,674 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:01,681 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:53:01,684 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2018-01-30 00:53:01,766 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:01,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-30 00:53:01,766 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 00:53:01,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 00:53:01,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 00:53:01,767 INFO L87 Difference]: Start difference. First operand 214 states and 223 transitions. Second operand 21 states. [2018-01-30 00:53:01,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:01,928 INFO L93 Difference]: Finished difference Result 363 states and 381 transitions. [2018-01-30 00:53:01,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 00:53:01,928 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 319 [2018-01-30 00:53:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:01,929 INFO L225 Difference]: With dead ends: 363 [2018-01-30 00:53:01,929 INFO L226 Difference]: Without dead ends: 227 [2018-01-30 00:53:01,930 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 00:53:01,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-01-30 00:53:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2018-01-30 00:53:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-01-30 00:53:01,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 231 transitions. [2018-01-30 00:53:01,933 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 231 transitions. Word has length 319 [2018-01-30 00:53:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:01,933 INFO L432 AbstractCegarLoop]: Abstraction has 222 states and 231 transitions. [2018-01-30 00:53:01,933 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 00:53:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 231 transitions. [2018-01-30 00:53:01,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-01-30 00:53:01,934 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:01,934 INFO L350 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 9, 9, 9, 9, 9, 9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:01,935 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation]=== [2018-01-30 00:53:01,935 INFO L82 PathProgramCache]: Analyzing trace with hash 813069158, now seen corresponding path program 9 times [2018-01-30 00:53:01,935 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:01,935 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:01,935 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:01,935 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:01,935 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:01,948 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2018-01-30 00:53:02,433 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:02,433 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:02,438 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:53:02,451 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:53:02,463 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:53:02,480 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:53:02,496 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:53:02,517 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:53:02,519 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:53:02,521 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 606 proven. 30 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2018-01-30 00:53:02,637 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:02,637 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 28 [2018-01-30 00:53:02,637 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-30 00:53:02,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-30 00:53:02,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2018-01-30 00:53:02,638 INFO L87 Difference]: Start difference. First operand 222 states and 231 transitions. Second operand 28 states. [2018-01-30 00:53:03,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:03,086 INFO L93 Difference]: Finished difference Result 379 states and 398 transitions. [2018-01-30 00:53:03,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-30 00:53:03,087 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 327 [2018-01-30 00:53:03,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:03,087 INFO L225 Difference]: With dead ends: 379 [2018-01-30 00:53:03,087 INFO L226 Difference]: Without dead ends: 243 [2018-01-30 00:53:03,088 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=575, Invalid=2077, Unknown=0, NotChecked=0, Total=2652 [2018-01-30 00:53:03,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-30 00:53:03,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 238. [2018-01-30 00:53:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-01-30 00:53:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 247 transitions. [2018-01-30 00:53:03,092 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 247 transitions. Word has length 327 [2018-01-30 00:53:03,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:03,092 INFO L432 AbstractCegarLoop]: Abstraction has 238 states and 247 transitions. [2018-01-30 00:53:03,092 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-30 00:53:03,092 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 247 transitions. [2018-01-30 00:53:03,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-01-30 00:53:03,093 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:03,093 INFO L350 BasicCegarLoop]: trace histogram [18, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:03,093 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation]=== [2018-01-30 00:53:03,093 INFO L82 PathProgramCache]: Analyzing trace with hash -51578170, now seen corresponding path program 10 times [2018-01-30 00:53:03,093 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:03,093 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:03,094 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:03,094 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:03,094 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:03,107 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 720 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2018-01-30 00:53:03,680 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:03,681 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:03,685 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:53:03,720 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:53:03,723 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 600 proven. 120 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2018-01-30 00:53:03,793 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:03,793 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-30 00:53:03,794 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 00:53:03,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 00:53:03,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-30 00:53:03,794 INFO L87 Difference]: Start difference. First operand 238 states and 247 transitions. Second operand 15 states. [2018-01-30 00:53:04,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:04,681 INFO L93 Difference]: Finished difference Result 408 states and 430 transitions. [2018-01-30 00:53:04,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 00:53:04,682 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 343 [2018-01-30 00:53:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:04,683 INFO L225 Difference]: With dead ends: 408 [2018-01-30 00:53:04,683 INFO L226 Difference]: Without dead ends: 265 [2018-01-30 00:53:04,683 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-30 00:53:04,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-01-30 00:53:04,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 253. [2018-01-30 00:53:04,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-01-30 00:53:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 263 transitions. [2018-01-30 00:53:04,686 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 263 transitions. Word has length 343 [2018-01-30 00:53:04,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:04,687 INFO L432 AbstractCegarLoop]: Abstraction has 253 states and 263 transitions. [2018-01-30 00:53:04,687 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 00:53:04,687 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 263 transitions. [2018-01-30 00:53:04,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-30 00:53:04,688 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:04,688 INFO L350 BasicCegarLoop]: trace histogram [21, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:04,688 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation]=== [2018-01-30 00:53:04,688 INFO L82 PathProgramCache]: Analyzing trace with hash 158171738, now seen corresponding path program 11 times [2018-01-30 00:53:04,688 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:04,689 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:04,689 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:04,689 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:04,689 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:04,703 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 0 proven. 1027 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2018-01-30 00:53:05,133 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:05,133 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:05,137 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:53:05,147 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:05,157 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:05,170 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:05,179 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:05,192 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:05,198 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:05,205 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:05,227 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:05,250 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:05,251 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:53:05,260 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2251 backedges. 850 proven. 177 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2018-01-30 00:53:05,358 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:05,359 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-01-30 00:53:05,359 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 00:53:05,359 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 00:53:05,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-30 00:53:05,359 INFO L87 Difference]: Start difference. First operand 253 states and 263 transitions. Second operand 17 states. [2018-01-30 00:53:05,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:05,471 INFO L93 Difference]: Finished difference Result 438 states and 462 transitions. [2018-01-30 00:53:05,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 00:53:05,472 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 376 [2018-01-30 00:53:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:05,473 INFO L225 Difference]: With dead ends: 438 [2018-01-30 00:53:05,473 INFO L226 Difference]: Without dead ends: 280 [2018-01-30 00:53:05,473 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2018-01-30 00:53:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-01-30 00:53:05,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 268. [2018-01-30 00:53:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-01-30 00:53:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 279 transitions. [2018-01-30 00:53:05,476 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 279 transitions. Word has length 376 [2018-01-30 00:53:05,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:05,477 INFO L432 AbstractCegarLoop]: Abstraction has 268 states and 279 transitions. [2018-01-30 00:53:05,477 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 00:53:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 279 transitions. [2018-01-30 00:53:05,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-01-30 00:53:05,478 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:05,478 INFO L350 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:05,478 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation]=== [2018-01-30 00:53:05,478 INFO L82 PathProgramCache]: Analyzing trace with hash -881549114, now seen corresponding path program 12 times [2018-01-30 00:53:05,478 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:05,478 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:05,479 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:05,479 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:05,479 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:05,494 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2896 backedges. 0 proven. 1389 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2018-01-30 00:53:05,766 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:05,766 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:05,771 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:53:05,783 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:05,785 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:05,789 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:05,792 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:05,799 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:05,828 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:05,848 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:05,887 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:05,984 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:06,118 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:06,203 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:06,205 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:53:06,209 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2896 backedges. 1144 proven. 245 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2018-01-30 00:53:06,604 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:06,604 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-30 00:53:06,604 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:53:06,604 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:53:06,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:53:06,605 INFO L87 Difference]: Start difference. First operand 268 states and 279 transitions. Second operand 19 states. [2018-01-30 00:53:07,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:07,057 INFO L93 Difference]: Finished difference Result 468 states and 494 transitions. [2018-01-30 00:53:07,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 00:53:07,057 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 409 [2018-01-30 00:53:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:07,058 INFO L225 Difference]: With dead ends: 468 [2018-01-30 00:53:07,058 INFO L226 Difference]: Without dead ends: 295 [2018-01-30 00:53:07,059 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 00:53:07,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-01-30 00:53:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 283. [2018-01-30 00:53:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-01-30 00:53:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 295 transitions. [2018-01-30 00:53:07,062 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 295 transitions. Word has length 409 [2018-01-30 00:53:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:07,063 INFO L432 AbstractCegarLoop]: Abstraction has 283 states and 295 transitions. [2018-01-30 00:53:07,063 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:53:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 295 transitions. [2018-01-30 00:53:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-01-30 00:53:07,064 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:07,064 INFO L350 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:07,064 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation]=== [2018-01-30 00:53:07,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1493442906, now seen corresponding path program 13 times [2018-01-30 00:53:07,065 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:07,065 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:07,065 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:07,065 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:07,065 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:07,081 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 1834 trivial. 0 not checked. [2018-01-30 00:53:07,406 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:07,406 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:07,411 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:53:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:07,463 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3640 backedges. 1482 proven. 324 refuted. 0 times theorem prover too weak. 1834 trivial. 0 not checked. [2018-01-30 00:53:07,668 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:07,668 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-30 00:53:07,669 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 00:53:07,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 00:53:07,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 00:53:07,669 INFO L87 Difference]: Start difference. First operand 283 states and 295 transitions. Second operand 21 states. [2018-01-30 00:53:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:07,868 INFO L93 Difference]: Finished difference Result 498 states and 526 transitions. [2018-01-30 00:53:07,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 00:53:07,879 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 442 [2018-01-30 00:53:07,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:07,880 INFO L225 Difference]: With dead ends: 498 [2018-01-30 00:53:07,880 INFO L226 Difference]: Without dead ends: 310 [2018-01-30 00:53:07,881 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 00:53:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-01-30 00:53:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 298. [2018-01-30 00:53:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-01-30 00:53:07,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 311 transitions. [2018-01-30 00:53:07,885 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 311 transitions. Word has length 442 [2018-01-30 00:53:07,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:07,885 INFO L432 AbstractCegarLoop]: Abstraction has 298 states and 311 transitions. [2018-01-30 00:53:07,885 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 00:53:07,885 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 311 transitions. [2018-01-30 00:53:07,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-01-30 00:53:07,887 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:07,887 INFO L350 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:07,887 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation]=== [2018-01-30 00:53:07,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1638471994, now seen corresponding path program 14 times [2018-01-30 00:53:07,887 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:07,887 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:07,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:07,888 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:53:07,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:07,906 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4483 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2018-01-30 00:53:08,324 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:08,324 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:08,330 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:53:08,347 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:08,382 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:08,388 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:53:08,391 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4483 backedges. 1864 proven. 414 refuted. 0 times theorem prover too weak. 2205 trivial. 0 not checked. [2018-01-30 00:53:08,497 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:08,497 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-01-30 00:53:08,498 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 00:53:08,498 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 00:53:08,498 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-30 00:53:08,498 INFO L87 Difference]: Start difference. First operand 298 states and 311 transitions. Second operand 23 states. [2018-01-30 00:53:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:08,855 INFO L93 Difference]: Finished difference Result 516 states and 545 transitions. [2018-01-30 00:53:08,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 00:53:08,855 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 475 [2018-01-30 00:53:08,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:08,856 INFO L225 Difference]: With dead ends: 516 [2018-01-30 00:53:08,856 INFO L226 Difference]: Without dead ends: 313 [2018-01-30 00:53:08,857 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 00:53:08,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-01-30 00:53:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-01-30 00:53:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-01-30 00:53:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 327 transitions. [2018-01-30 00:53:08,861 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 327 transitions. Word has length 475 [2018-01-30 00:53:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:08,861 INFO L432 AbstractCegarLoop]: Abstraction has 313 states and 327 transitions. [2018-01-30 00:53:08,861 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 00:53:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 327 transitions. [2018-01-30 00:53:08,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-01-30 00:53:08,863 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:08,863 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:08,863 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation]=== [2018-01-30 00:53:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1525194842, now seen corresponding path program 15 times [2018-01-30 00:53:08,863 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:08,863 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:08,864 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:08,864 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:08,864 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:08,882 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5425 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 5369 trivial. 0 not checked. [2018-01-30 00:53:09,437 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:09,437 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:09,443 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:53:09,457 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:53:09,461 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:53:09,467 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:53:09,479 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:53:09,492 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:53:09,527 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:53:09,528 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:53:09,532 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5425 backedges. 2583 proven. 56 refuted. 0 times theorem prover too weak. 2786 trivial. 0 not checked. [2018-01-30 00:53:09,748 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:09,748 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 19 [2018-01-30 00:53:09,748 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:53:09,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:53:09,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:53:09,749 INFO L87 Difference]: Start difference. First operand 313 states and 327 transitions. Second operand 19 states. [2018-01-30 00:53:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:09,939 INFO L93 Difference]: Finished difference Result 492 states and 517 transitions. [2018-01-30 00:53:09,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-30 00:53:09,939 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 508 [2018-01-30 00:53:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:09,940 INFO L225 Difference]: With dead ends: 492 [2018-01-30 00:53:09,941 INFO L226 Difference]: Without dead ends: 326 [2018-01-30 00:53:09,941 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=246, Invalid=1014, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 00:53:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-01-30 00:53:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 321. [2018-01-30 00:53:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-01-30 00:53:09,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 335 transitions. [2018-01-30 00:53:09,948 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 335 transitions. Word has length 508 [2018-01-30 00:53:09,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:09,948 INFO L432 AbstractCegarLoop]: Abstraction has 321 states and 335 transitions. [2018-01-30 00:53:09,948 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:53:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 335 transitions. [2018-01-30 00:53:09,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2018-01-30 00:53:09,950 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:09,950 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:09,950 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation]=== [2018-01-30 00:53:09,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1047440559, now seen corresponding path program 16 times [2018-01-30 00:53:09,950 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:09,950 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:09,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:09,951 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:09,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:09,972 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5459 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 5369 trivial. 0 not checked. [2018-01-30 00:53:10,613 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:10,613 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:10,619 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:53:10,671 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:53:10,674 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5459 backedges. 2296 proven. 90 refuted. 0 times theorem prover too weak. 3073 trivial. 0 not checked. [2018-01-30 00:53:10,829 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:10,829 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-01-30 00:53:10,829 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 00:53:10,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 00:53:10,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-30 00:53:10,830 INFO L87 Difference]: Start difference. First operand 321 states and 335 transitions. Second operand 15 states. [2018-01-30 00:53:10,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:10,965 INFO L93 Difference]: Finished difference Result 500 states and 525 transitions. [2018-01-30 00:53:10,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 00:53:10,966 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 516 [2018-01-30 00:53:10,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:10,967 INFO L225 Difference]: With dead ends: 500 [2018-01-30 00:53:10,967 INFO L226 Difference]: Without dead ends: 334 [2018-01-30 00:53:10,968 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2018-01-30 00:53:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-01-30 00:53:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 329. [2018-01-30 00:53:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-01-30 00:53:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 343 transitions. [2018-01-30 00:53:10,973 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 343 transitions. Word has length 516 [2018-01-30 00:53:10,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:10,973 INFO L432 AbstractCegarLoop]: Abstraction has 329 states and 343 transitions. [2018-01-30 00:53:10,973 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 00:53:10,973 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 343 transitions. [2018-01-30 00:53:10,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-01-30 00:53:10,976 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:10,976 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:10,976 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation]=== [2018-01-30 00:53:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1552998584, now seen corresponding path program 17 times [2018-01-30 00:53:10,976 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:10,976 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:10,977 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:10,977 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:10,977 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:10,999 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5501 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 5369 trivial. 0 not checked. [2018-01-30 00:53:11,883 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:11,883 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:11,887 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:53:11,899 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:11,901 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:11,905 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:11,909 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:11,915 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:11,920 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:11,928 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:12,003 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:12,070 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:12,102 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:12,261 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:12,632 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:12,635 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:53:12,639 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5501 backedges. 2296 proven. 132 refuted. 0 times theorem prover too weak. 3073 trivial. 0 not checked. [2018-01-30 00:53:12,942 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:12,942 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-01-30 00:53:12,943 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 00:53:12,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 00:53:12,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-30 00:53:12,943 INFO L87 Difference]: Start difference. First operand 329 states and 343 transitions. Second operand 17 states. [2018-01-30 00:53:13,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:13,046 INFO L93 Difference]: Finished difference Result 508 states and 533 transitions. [2018-01-30 00:53:13,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 00:53:13,046 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 524 [2018-01-30 00:53:13,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:13,047 INFO L225 Difference]: With dead ends: 508 [2018-01-30 00:53:13,047 INFO L226 Difference]: Without dead ends: 342 [2018-01-30 00:53:13,047 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2018-01-30 00:53:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-01-30 00:53:13,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 337. [2018-01-30 00:53:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-01-30 00:53:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 351 transitions. [2018-01-30 00:53:13,051 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 351 transitions. Word has length 524 [2018-01-30 00:53:13,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:13,051 INFO L432 AbstractCegarLoop]: Abstraction has 337 states and 351 transitions. [2018-01-30 00:53:13,051 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 00:53:13,051 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 351 transitions. [2018-01-30 00:53:13,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-01-30 00:53:13,053 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:13,054 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:13,054 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation]=== [2018-01-30 00:53:13,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1437006785, now seen corresponding path program 18 times [2018-01-30 00:53:13,054 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:13,054 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:13,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:13,054 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:13,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:13,072 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 5369 trivial. 0 not checked. [2018-01-30 00:53:13,700 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:13,700 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:13,705 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:53:13,719 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:13,722 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:13,733 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:13,742 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:13,756 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:13,769 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:13,778 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:13,810 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:13,846 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:13,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:13,898 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:14,012 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:14,165 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:53:14,168 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:53:14,173 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 2296 proven. 182 refuted. 0 times theorem prover too weak. 3073 trivial. 0 not checked. [2018-01-30 00:53:14,351 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:14,352 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-01-30 00:53:14,352 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:53:14,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:53:14,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:53:14,352 INFO L87 Difference]: Start difference. First operand 337 states and 351 transitions. Second operand 19 states. [2018-01-30 00:53:14,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:14,530 INFO L93 Difference]: Finished difference Result 516 states and 541 transitions. [2018-01-30 00:53:14,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 00:53:14,530 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 532 [2018-01-30 00:53:14,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:14,531 INFO L225 Difference]: With dead ends: 516 [2018-01-30 00:53:14,531 INFO L226 Difference]: Without dead ends: 350 [2018-01-30 00:53:14,532 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 00:53:14,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-01-30 00:53:14,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 345. [2018-01-30 00:53:14,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-01-30 00:53:14,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 359 transitions. [2018-01-30 00:53:14,535 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 359 transitions. Word has length 532 [2018-01-30 00:53:14,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:14,536 INFO L432 AbstractCegarLoop]: Abstraction has 345 states and 359 transitions. [2018-01-30 00:53:14,536 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:53:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 359 transitions. [2018-01-30 00:53:14,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2018-01-30 00:53:14,538 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:14,538 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:14,538 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation]=== [2018-01-30 00:53:14,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1188691402, now seen corresponding path program 19 times [2018-01-30 00:53:14,538 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:14,538 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:14,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:14,539 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:14,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:14,556 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5609 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 5369 trivial. 0 not checked. [2018-01-30 00:53:15,015 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:15,015 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-30 00:53:15,043 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:15,100 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5609 backedges. 2296 proven. 240 refuted. 0 times theorem prover too weak. 3073 trivial. 0 not checked. [2018-01-30 00:53:15,297 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:15,297 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-01-30 00:53:15,297 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 00:53:15,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 00:53:15,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 00:53:15,298 INFO L87 Difference]: Start difference. First operand 345 states and 359 transitions. Second operand 21 states. [2018-01-30 00:53:15,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:15,733 INFO L93 Difference]: Finished difference Result 519 states and 544 transitions. [2018-01-30 00:53:15,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 00:53:15,734 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 540 [2018-01-30 00:53:15,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:15,735 INFO L225 Difference]: With dead ends: 519 [2018-01-30 00:53:15,735 INFO L226 Difference]: Without dead ends: 353 [2018-01-30 00:53:15,735 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 00:53:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-01-30 00:53:15,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-01-30 00:53:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-01-30 00:53:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 367 transitions. [2018-01-30 00:53:15,739 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 367 transitions. Word has length 540 [2018-01-30 00:53:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:15,739 INFO L432 AbstractCegarLoop]: Abstraction has 353 states and 367 transitions. [2018-01-30 00:53:15,739 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 00:53:15,739 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 367 transitions. [2018-01-30 00:53:15,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-01-30 00:53:15,741 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:15,741 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:15,741 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation]=== [2018-01-30 00:53:15,742 INFO L82 PathProgramCache]: Analyzing trace with hash -340977363, now seen corresponding path program 20 times [2018-01-30 00:53:15,742 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:15,742 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:15,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:15,743 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:53:15,743 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:15,931 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5675 backedges. 0 proven. 4635 refuted. 0 times theorem prover too weak. 1040 trivial. 0 not checked. [2018-01-30 00:53:18,465 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:18,466 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:18,470 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:53:18,485 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:18,526 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:53:18,646 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:53:18,652 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5675 backedges. 218 proven. 4635 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2018-01-30 00:53:21,187 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:21,187 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 70] total 72 [2018-01-30 00:53:21,187 INFO L409 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-01-30 00:53:21,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-01-30 00:53:21,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=4923, Unknown=0, NotChecked=0, Total=5112 [2018-01-30 00:53:21,188 INFO L87 Difference]: Start difference. First operand 353 states and 367 transitions. Second operand 72 states. [2018-01-30 00:53:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:23,422 INFO L93 Difference]: Finished difference Result 690 states and 722 transitions. [2018-01-30 00:53:23,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-01-30 00:53:23,422 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 548 [2018-01-30 00:53:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:23,426 INFO L225 Difference]: With dead ends: 690 [2018-01-30 00:53:23,426 INFO L226 Difference]: Without dead ends: 684 [2018-01-30 00:53:23,429 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 536 SyntacticMatches, 15 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3649 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=425, Invalid=12685, Unknown=0, NotChecked=0, Total=13110 [2018-01-30 00:53:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2018-01-30 00:53:23,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 554. [2018-01-30 00:53:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2018-01-30 00:53:23,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 584 transitions. [2018-01-30 00:53:23,440 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 584 transitions. Word has length 548 [2018-01-30 00:53:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:23,440 INFO L432 AbstractCegarLoop]: Abstraction has 554 states and 584 transitions. [2018-01-30 00:53:23,440 INFO L433 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-01-30 00:53:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 584 transitions. [2018-01-30 00:53:23,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-01-30 00:53:23,443 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:23,443 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:23,443 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation]=== [2018-01-30 00:53:23,443 INFO L82 PathProgramCache]: Analyzing trace with hash 450233447, now seen corresponding path program 1 times [2018-01-30 00:53:23,443 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:23,443 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:23,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:23,444 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:53:23,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:23,610 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:27,365 WARN L146 SmtUtils]: Spent 118ms on a formula simplification. DAG size of input: 7 DAG size of output 6 [2018-01-30 00:53:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5559 backedges. 1003 proven. 2930 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2018-01-30 00:53:29,907 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:53:29,908 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:53:29,920 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:53:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:30,002 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:53:30,428 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-01-30 00:53:30,429 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-01-30 00:53:30,430 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-30 00:53:30,431 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:53:30,433 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:53:30,433 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:17, output treesize:3 [2018-01-30 00:53:31,473 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2018-01-30 00:53:31,474 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:53:31,476 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 39 [2018-01-30 00:53:31,476 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-30 00:53:31,480 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:53:31,483 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:53:31,483 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:40, output treesize:36 [2018-01-30 00:53:31,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 35 [2018-01-30 00:53:31,562 INFO L700 Elim1Store]: detected not equals via solver [2018-01-30 00:53:31,606 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2018-01-30 00:53:31,607 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-30 00:53:31,623 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:53:31,627 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:53:31,627 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:49, output treesize:19 [2018-01-30 00:53:32,028 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 27 [2018-01-30 00:53:32,032 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2018-01-30 00:53:32,032 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-30 00:53:32,033 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:53:32,035 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:53:32,035 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:11 [2018-01-30 00:53:32,060 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-01-30 00:53:32,062 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-01-30 00:53:32,062 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-30 00:53:32,063 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:53:32,067 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:53:32,067 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:23 [2018-01-30 00:53:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5559 backedges. 23 proven. 4741 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2018-01-30 00:53:34,020 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:53:34,020 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 77] total 101 [2018-01-30 00:53:34,020 INFO L409 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-01-30 00:53:34,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-01-30 00:53:34,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=693, Invalid=9407, Unknown=0, NotChecked=0, Total=10100 [2018-01-30 00:53:34,022 INFO L87 Difference]: Start difference. First operand 554 states and 584 transitions. Second operand 101 states. [2018-01-30 00:53:48,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:53:48,210 INFO L93 Difference]: Finished difference Result 1795 states and 1917 transitions. [2018-01-30 00:53:48,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2018-01-30 00:53:48,210 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 548 [2018-01-30 00:53:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:53:48,214 INFO L225 Difference]: With dead ends: 1795 [2018-01-30 00:53:48,214 INFO L226 Difference]: Without dead ends: 1735 [2018-01-30 00:53:48,222 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 483 SyntacticMatches, 64 SemanticMatches, 317 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42164 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=8369, Invalid=93073, Unknown=0, NotChecked=0, Total=101442 [2018-01-30 00:53:48,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2018-01-30 00:53:48,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1313. [2018-01-30 00:53:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1313 states. [2018-01-30 00:53:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 1396 transitions. [2018-01-30 00:53:48,249 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 1396 transitions. Word has length 548 [2018-01-30 00:53:48,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:53:48,250 INFO L432 AbstractCegarLoop]: Abstraction has 1313 states and 1396 transitions. [2018-01-30 00:53:48,250 INFO L433 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-01-30 00:53:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 1396 transitions. [2018-01-30 00:53:48,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2018-01-30 00:53:48,253 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:53:48,253 INFO L350 BasicCegarLoop]: trace histogram [33, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:53:48,253 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation]=== [2018-01-30 00:53:48,254 INFO L82 PathProgramCache]: Analyzing trace with hash 76727731, now seen corresponding path program 2 times [2018-01-30 00:53:48,254 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:53:48,254 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:53:48,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:48,254 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:53:48,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:53:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:53:48,500 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:53:52,372 WARN L146 SmtUtils]: Spent 173ms on a formula simplification. DAG size of input: 19 DAG size of output 6 [2018-01-30 00:53:52,683 WARN L146 SmtUtils]: Spent 255ms on a formula simplification. DAG size of input: 25 DAG size of output 6 Received shutdown request... [2018-01-30 00:53:53,700 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 00:53:53,702 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 00:53:53,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 12:53:53 BoogieIcfgContainer [2018-01-30 00:53:53,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 00:53:53,703 INFO L168 Benchmark]: Toolchain (without parser) took 59035.78 ms. Allocated memory was 151.5 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 116.5 MB in the beginning and 624.6 MB in the end (delta: -508.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. [2018-01-30 00:53:53,704 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 151.5 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 00:53:53,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 112.88 ms. Allocated memory is still 151.5 MB. Free memory was 116.3 MB in the beginning and 107.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. [2018-01-30 00:53:53,704 INFO L168 Benchmark]: Boogie Preprocessor took 18.93 ms. Allocated memory is still 151.5 MB. Free memory was 107.7 MB in the beginning and 105.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. [2018-01-30 00:53:53,704 INFO L168 Benchmark]: RCFGBuilder took 356.46 ms. Allocated memory is still 151.5 MB. Free memory was 105.9 MB in the beginning and 86.5 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 5.3 GB. [2018-01-30 00:53:53,704 INFO L168 Benchmark]: TraceAbstraction took 58545.27 ms. Allocated memory was 151.5 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 86.2 MB in the beginning and 624.6 MB in the end (delta: -538.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. [2018-01-30 00:53:53,705 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 151.5 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 112.88 ms. Allocated memory is still 151.5 MB. Free memory was 116.3 MB in the beginning and 107.7 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 18.93 ms. Allocated memory is still 151.5 MB. Free memory was 107.7 MB in the beginning and 105.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 5.3 GB. * RCFGBuilder took 356.46 ms. Allocated memory is still 151.5 MB. Free memory was 105.9 MB in the beginning and 86.5 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 58545.27 ms. Allocated memory was 151.5 MB in the beginning and 2.1 GB in the end (delta: 1.9 GB). Free memory was 86.2 MB in the beginning and 624.6 MB in the end (delta: -538.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 42). Cancelled while BasicCegarLoop was analyzing trace of length 549 with TraceHistMax 33, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 547 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 83 locations, 1 error locations. TIMEOUT Result, 58.5s OverallTime, 26 OverallIterations, 33 TraceHistogramMax, 21.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2333 SDtfs, 3218 SDslu, 46154 SDs, 0 SdLazy, 18485 SolverSat, 423 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9133 GetRequests, 8042 SyntacticMatches, 79 SemanticMatches, 1012 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49463 ImplicationChecksByTransitivity, 27.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1313occurred in iteration=25, 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, 25 MinimizatonAttempts, 745 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 25.1s InterpolantComputationTime, 16463 NumberOfCodeBlocks, 15870 NumberOfCodeBlocksAsserted, 114 NumberOfCheckSat, 16415 ConstructedInterpolants, 236 QuantifiedInterpolants, 20605470 SizeOfPredicates, 409 NumberOfNonLiveVariables, 12165 ConjunctsInSsa, 647 ConjunctsInUnsatCore, 48 InterpolantComputations, 4 PerfectInterpolantSequences, 94692/123401 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sep10_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-30_00-53-53-709.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sep10_true-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_00-53-53-709.csv Completed graceful shutdown