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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-examples/standard_minInArray_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 03:42:41,762 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 03:42:41,763 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 03:42:41,776 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 03:42:41,776 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 03:42:41,777 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 03:42:41,777 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 03:42:41,778 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 03:42:41,780 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 03:42:41,780 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 03:42:41,780 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 03:42:41,781 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 03:42:41,781 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 03:42:41,782 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 03:42:41,782 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 03:42:41,783 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 03:42:41,785 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 03:42:41,785 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 03:42:41,786 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 03:42:41,787 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 03:42:41,788 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-30 03:42:41,788 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-30 03:42:41,788 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-30 03:42:41,789 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-30 03:42:41,789 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-30 03:42:41,790 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-30 03:42:41,790 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-30 03:42:41,790 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-30 03:42:41,791 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-30 03:42:41,791 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-30 03:42:41,791 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-30 03:42:41,791 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 03:42:41,796 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 03:42:41,796 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 03:42:41,797 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 03:42:41,797 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 03:42:41,797 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 03:42:41,797 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 03:42:41,797 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 03:42:41,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 03:42:41,798 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 03:42:41,798 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 03:42:41,798 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 03:42:41,798 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 03:42:41,798 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 03:42:41,798 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 03:42:41,798 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 03:42:41,798 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 03:42:41,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 03:42:41,798 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 03:42:41,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 03:42:41,799 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 03:42:41,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 03:42:41,799 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 03:42:41,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 03:42:41,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 03:42:41,799 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 03:42:41,799 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 03:42:41,799 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 03:42:41,799 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 03:42:41,799 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 03:42:41,800 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 03:42:41,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 03:42:41,800 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 03:42:41,800 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 03:42:41,800 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 03:42:41,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 03:42:41,824 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 03:42:41,826 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 03:42:41,827 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 03:42:41,827 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 03:42:41,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_minInArray_true-unreach-call_ground.i [2018-01-30 03:42:41,889 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 03:42:41,890 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 03:42:41,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 03:42:41,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 03:42:41,894 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 03:42:41,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 03:42:41" (1/1) ... [2018-01-30 03:42:41,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564942db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:42:41, skipping insertion in model container [2018-01-30 03:42:41,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 03:42:41" (1/1) ... [2018-01-30 03:42:41,905 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 03:42:41,913 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 03:42:41,985 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 03:42:41,992 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 03:42:41,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:42:41 WrapperNode [2018-01-30 03:42:41,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 03:42:41,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 03:42:41,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 03:42:41,996 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 03:42:42,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:42:41" (1/1) ... [2018-01-30 03:42:42,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:42:41" (1/1) ... [2018-01-30 03:42:42,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:42:41" (1/1) ... [2018-01-30 03:42:42,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:42:41" (1/1) ... [2018-01-30 03:42:42,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:42:41" (1/1) ... [2018-01-30 03:42:42,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:42:41" (1/1) ... [2018-01-30 03:42:42,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:42:41" (1/1) ... [2018-01-30 03:42:42,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 03:42:42,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 03:42:42,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 03:42:42,013 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 03:42:42,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:42:41" (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 03:42:42,045 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 03:42:42,045 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 03:42:42,045 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 03:42:42,045 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 03:42:42,045 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 03:42:42,045 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 03:42:42,045 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 03:42:42,045 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 03:42:42,046 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 03:42:42,254 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 03:42:42,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 03:42:42 BoogieIcfgContainer [2018-01-30 03:42:42,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 03:42:42,255 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 03:42:42,255 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 03:42:42,256 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 03:42:42,257 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 03:42:42" (1/1) ... [2018-01-30 03:42:42,260 WARN L213 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-01-30 03:42:42,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 03:42:42 BasicIcfg [2018-01-30 03:42:42,268 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 03:42:42,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 03:42:42,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 03:42:42,271 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 03:42:42,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 03:42:41" (1/4) ... [2018-01-30 03:42:42,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737e3ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 03:42:42, skipping insertion in model container [2018-01-30 03:42:42,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 03:42:41" (2/4) ... [2018-01-30 03:42:42,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737e3ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 03:42:42, skipping insertion in model container [2018-01-30 03:42:42,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 03:42:42" (3/4) ... [2018-01-30 03:42:42,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737e3ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 03:42:42, skipping insertion in model container [2018-01-30 03:42:42,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 03:42:42" (4/4) ... [2018-01-30 03:42:42,273 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_minInArray_true-unreach-call_ground.ileft_unchanged_by_heapseparator [2018-01-30 03:42:42,281 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 03:42:42,292 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 03:42:42,345 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 03:42:42,345 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 03:42:42,346 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 03:42:42,346 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 03:42:42,346 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 03:42:42,346 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 03:42:42,346 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 03:42:42,346 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 03:42:42,346 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 03:42:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-30 03:42:42,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-30 03:42:42,364 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:42,368 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:42,368 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:42,371 INFO L82 PathProgramCache]: Analyzing trace with hash -318788174, now seen corresponding path program 1 times [2018-01-30 03:42:42,372 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:42,373 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:42,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:42,404 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:42:42,404 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:42,429 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:42,449 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 03:42:42,449 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 03:42:42,450 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 03:42:42,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 03:42:42,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 03:42:42,459 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-01-30 03:42:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:42,473 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2018-01-30 03:42:42,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 03:42:42,474 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-01-30 03:42:42,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:42,481 INFO L225 Difference]: With dead ends: 50 [2018-01-30 03:42:42,481 INFO L226 Difference]: Without dead ends: 26 [2018-01-30 03:42:42,484 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 03:42:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-01-30 03:42:42,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-01-30 03:42:42,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-01-30 03:42:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-01-30 03:42:42,508 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2018-01-30 03:42:42,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:42,508 INFO L432 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-01-30 03:42:42,508 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 03:42:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-01-30 03:42:42,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-30 03:42:42,509 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:42,509 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:42,509 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:42,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1164876976, now seen corresponding path program 1 times [2018-01-30 03:42:42,509 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:42,510 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:42,510 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:42,510 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:42:42,510 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:42,517 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:42,573 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 03:42:42,573 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 03:42:42,574 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 03:42:42,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 03:42:42,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 03:42:42,576 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 3 states. [2018-01-30 03:42:42,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:42,714 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2018-01-30 03:42:42,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 03:42:42,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-01-30 03:42:42,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:42,717 INFO L225 Difference]: With dead ends: 45 [2018-01-30 03:42:42,717 INFO L226 Difference]: Without dead ends: 31 [2018-01-30 03:42:42,718 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 03:42:42,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-01-30 03:42:42,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-01-30 03:42:42,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-30 03:42:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-01-30 03:42:42,720 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2018-01-30 03:42:42,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:42,721 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-01-30 03:42:42,721 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 03:42:42,721 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-01-30 03:42:42,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-30 03:42:42,721 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:42,722 INFO L350 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:42,722 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:42,722 INFO L82 PathProgramCache]: Analyzing trace with hash -246724458, now seen corresponding path program 1 times [2018-01-30 03:42:42,723 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:42,723 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:42,723 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:42,723 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:42:42,723 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:42,734 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:42,792 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:42,793 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:42:42,807 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:42:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:42,830 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:42,859 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:42,859 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-01-30 03:42:42,859 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 03:42:42,860 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 03:42:42,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-30 03:42:42,860 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 4 states. [2018-01-30 03:42:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:42,920 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2018-01-30 03:42:42,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-30 03:42:42,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-30 03:42:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:42,921 INFO L225 Difference]: With dead ends: 50 [2018-01-30 03:42:42,921 INFO L226 Difference]: Without dead ends: 36 [2018-01-30 03:42:42,921 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-30 03:42:42,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-30 03:42:42,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-01-30 03:42:42,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-30 03:42:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-01-30 03:42:42,924 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2018-01-30 03:42:42,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:42,924 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-01-30 03:42:42,924 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 03:42:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-01-30 03:42:42,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-30 03:42:42,925 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:42,925 INFO L350 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:42,925 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:42,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1033561380, now seen corresponding path program 2 times [2018-01-30 03:42:42,925 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:42,925 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:42,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:42,926 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:42:42,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:42,933 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:43,020 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:43,020 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 03:42:43,036 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:42:43,041 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:43,047 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:43,052 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:43,053 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:43,077 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:43,077 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 03:42:43,078 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 03:42:43,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 03:42:43,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-30 03:42:43,078 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2018-01-30 03:42:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:43,269 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2018-01-30 03:42:43,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-30 03:42:43,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2018-01-30 03:42:43,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:43,270 INFO L225 Difference]: With dead ends: 55 [2018-01-30 03:42:43,270 INFO L226 Difference]: Without dead ends: 41 [2018-01-30 03:42:43,271 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-30 03:42:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-01-30 03:42:43,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2018-01-30 03:42:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-30 03:42:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-01-30 03:42:43,273 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2018-01-30 03:42:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:43,274 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-01-30 03:42:43,274 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 03:42:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-01-30 03:42:43,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-30 03:42:43,274 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:43,274 INFO L350 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:43,274 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:43,275 INFO L82 PathProgramCache]: Analyzing trace with hash -232760798, now seen corresponding path program 3 times [2018-01-30 03:42:43,275 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:43,275 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:43,275 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:43,275 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:43,275 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:43,281 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:43,332 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:43,332 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 03:42:43,342 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:42:43,346 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:43,353 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:43,354 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:43,355 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:43,356 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:43,357 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:43,361 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:43,377 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:43,377 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-01-30 03:42:43,378 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 03:42:43,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 03:42:43,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-30 03:42:43,378 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 6 states. [2018-01-30 03:42:43,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:43,420 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-01-30 03:42:43,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 03:42:43,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2018-01-30 03:42:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:43,421 INFO L225 Difference]: With dead ends: 60 [2018-01-30 03:42:43,421 INFO L226 Difference]: Without dead ends: 46 [2018-01-30 03:42:43,421 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-30 03:42:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-30 03:42:43,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-01-30 03:42:43,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-30 03:42:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-01-30 03:42:43,424 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 29 [2018-01-30 03:42:43,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:43,424 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-01-30 03:42:43,424 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 03:42:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-01-30 03:42:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-30 03:42:43,425 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:43,425 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:43,425 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:43,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1207862888, now seen corresponding path program 4 times [2018-01-30 03:42:43,425 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:43,425 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:43,425 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:43,426 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:43,426 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:43,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:43,528 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:43,528 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 03:42:43,540 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:42:43,547 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:43,548 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-01-30 03:42:43,630 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:43,630 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-01-30 03:42:43,631 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 03:42:43,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 03:42:43,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-01-30 03:42:43,631 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 12 states. [2018-01-30 03:42:44,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:44,056 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2018-01-30 03:42:44,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-30 03:42:44,056 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2018-01-30 03:42:44,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:44,058 INFO L225 Difference]: With dead ends: 103 [2018-01-30 03:42:44,058 INFO L226 Difference]: Without dead ends: 89 [2018-01-30 03:42:44,058 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-01-30 03:42:44,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-01-30 03:42:44,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2018-01-30 03:42:44,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-01-30 03:42:44,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 83 transitions. [2018-01-30 03:42:44,065 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 83 transitions. Word has length 33 [2018-01-30 03:42:44,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:44,066 INFO L432 AbstractCegarLoop]: Abstraction has 72 states and 83 transitions. [2018-01-30 03:42:44,066 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 03:42:44,066 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2018-01-30 03:42:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-30 03:42:44,066 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:44,066 INFO L350 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:44,066 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:44,067 INFO L82 PathProgramCache]: Analyzing trace with hash -618795518, now seen corresponding path program 1 times [2018-01-30 03:42:44,067 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:44,067 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:44,067 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:44,067 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:44,067 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:44,073 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:44,128 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:44,128 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) [2018-01-30 03:42:44,144 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:42:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:44,162 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:44,184 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:44,184 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-01-30 03:42:44,185 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-30 03:42:44,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-30 03:42:44,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-30 03:42:44,185 INFO L87 Difference]: Start difference. First operand 72 states and 83 transitions. Second operand 8 states. [2018-01-30 03:42:44,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:44,262 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2018-01-30 03:42:44,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-30 03:42:44,267 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2018-01-30 03:42:44,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:44,269 INFO L225 Difference]: With dead ends: 109 [2018-01-30 03:42:44,269 INFO L226 Difference]: Without dead ends: 86 [2018-01-30 03:42:44,269 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-30 03:42:44,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-30 03:42:44,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 81. [2018-01-30 03:42:44,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-30 03:42:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2018-01-30 03:42:44,273 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 38 [2018-01-30 03:42:44,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:44,273 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2018-01-30 03:42:44,273 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-30 03:42:44,273 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2018-01-30 03:42:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-30 03:42:44,274 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:44,274 INFO L350 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:44,274 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:44,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1907414456, now seen corresponding path program 2 times [2018-01-30 03:42:44,274 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:44,274 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:44,275 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:44,275 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:42:44,275 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:44,280 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:44,420 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:44,420 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 03:42:44,425 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:42:44,428 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:44,433 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:44,434 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:44,436 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:44,457 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:44,457 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-30 03:42:44,457 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 03:42:44,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 03:42:44,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-30 03:42:44,458 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand 9 states. [2018-01-30 03:42:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:44,597 INFO L93 Difference]: Finished difference Result 118 states and 138 transitions. [2018-01-30 03:42:44,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 03:42:44,598 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2018-01-30 03:42:44,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:44,598 INFO L225 Difference]: With dead ends: 118 [2018-01-30 03:42:44,598 INFO L226 Difference]: Without dead ends: 95 [2018-01-30 03:42:44,599 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-30 03:42:44,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-01-30 03:42:44,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2018-01-30 03:42:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-30 03:42:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2018-01-30 03:42:44,603 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 42 [2018-01-30 03:42:44,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:44,603 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2018-01-30 03:42:44,603 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 03:42:44,604 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2018-01-30 03:42:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-30 03:42:44,604 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:44,604 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:44,604 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:44,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1839410290, now seen corresponding path program 3 times [2018-01-30 03:42:44,604 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:44,605 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:44,605 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:44,605 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:44,605 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:44,610 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:44,796 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:44,796 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 03:42:44,803 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:42:44,807 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:44,822 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:44,828 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:44,831 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:44,832 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:44,832 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:44,833 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:44,834 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:44,834 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:44,836 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:44,864 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:44,864 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-01-30 03:42:44,865 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 03:42:44,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 03:42:44,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-30 03:42:44,865 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand 10 states. [2018-01-30 03:42:44,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:44,910 INFO L93 Difference]: Finished difference Result 127 states and 149 transitions. [2018-01-30 03:42:44,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-30 03:42:44,910 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2018-01-30 03:42:44,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:44,912 INFO L225 Difference]: With dead ends: 127 [2018-01-30 03:42:44,912 INFO L226 Difference]: Without dead ends: 104 [2018-01-30 03:42:44,912 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-30 03:42:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-01-30 03:42:44,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2018-01-30 03:42:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-30 03:42:44,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2018-01-30 03:42:44,916 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 46 [2018-01-30 03:42:44,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:44,916 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2018-01-30 03:42:44,916 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 03:42:44,917 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2018-01-30 03:42:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-30 03:42:44,918 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:44,918 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:44,918 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:44,918 INFO L82 PathProgramCache]: Analyzing trace with hash 424176084, now seen corresponding path program 4 times [2018-01-30 03:42:44,919 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:44,919 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:44,919 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:44,919 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:44,919 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:44,926 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 03:42:45,294 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:45,294 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 03:42:45,317 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:42:45,328 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:45,329 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-01-30 03:42:45,465 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:45,465 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2018-01-30 03:42:45,465 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 03:42:45,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 03:42:45,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2018-01-30 03:42:45,465 INFO L87 Difference]: Start difference. First operand 99 states and 116 transitions. Second operand 18 states. [2018-01-30 03:42:46,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:46,546 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2018-01-30 03:42:46,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-30 03:42:46,546 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 50 [2018-01-30 03:42:46,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:46,548 INFO L225 Difference]: With dead ends: 167 [2018-01-30 03:42:46,548 INFO L226 Difference]: Without dead ends: 144 [2018-01-30 03:42:46,549 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=676, Invalid=2080, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 03:42:46,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-01-30 03:42:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 75. [2018-01-30 03:42:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-01-30 03:42:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2018-01-30 03:42:46,554 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 50 [2018-01-30 03:42:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:46,554 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2018-01-30 03:42:46,554 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 03:42:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2018-01-30 03:42:46,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-01-30 03:42:46,555 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:46,555 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:46,555 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:46,555 INFO L82 PathProgramCache]: Analyzing trace with hash 394416264, now seen corresponding path program 1 times [2018-01-30 03:42:46,555 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:46,555 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:46,556 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:46,556 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:46,556 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:46,562 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:46,636 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 162 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:42:46,636 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:46,637 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 03:42:46,643 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:42:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:46,652 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:46,661 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-30 03:42:46,684 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:46,684 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-01-30 03:42:46,684 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 03:42:46,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 03:42:46,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-30 03:42:46,685 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 12 states. [2018-01-30 03:42:46,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:46,790 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2018-01-30 03:42:46,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 03:42:46,790 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2018-01-30 03:42:46,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:46,791 INFO L225 Difference]: With dead ends: 104 [2018-01-30 03:42:46,791 INFO L226 Difference]: Without dead ends: 83 [2018-01-30 03:42:46,791 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-30 03:42:46,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-01-30 03:42:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2018-01-30 03:42:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-01-30 03:42:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2018-01-30 03:42:46,795 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 63 [2018-01-30 03:42:46,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:46,796 INFO L432 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2018-01-30 03:42:46,796 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 03:42:46,796 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2018-01-30 03:42:46,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-30 03:42:46,796 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:46,796 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:46,796 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:46,796 INFO L82 PathProgramCache]: Analyzing trace with hash -702944434, now seen corresponding path program 2 times [2018-01-30 03:42:46,796 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:46,796 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:46,797 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:46,797 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:42:46,797 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:46,802 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 2 proven. 200 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:42:46,881 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:46,881 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 03:42:46,885 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:42:46,891 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:46,900 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:46,904 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:46,906 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-30 03:42:46,932 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:46,932 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-01-30 03:42:46,932 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 03:42:46,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 03:42:46,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-30 03:42:46,933 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand 13 states. [2018-01-30 03:42:46,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:46,993 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2018-01-30 03:42:46,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 03:42:46,993 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2018-01-30 03:42:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:46,994 INFO L225 Difference]: With dead ends: 109 [2018-01-30 03:42:46,994 INFO L226 Difference]: Without dead ends: 88 [2018-01-30 03:42:46,994 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-30 03:42:46,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-30 03:42:46,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2018-01-30 03:42:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-01-30 03:42:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2018-01-30 03:42:46,998 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 67 [2018-01-30 03:42:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:46,999 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2018-01-30 03:42:46,999 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 03:42:46,999 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2018-01-30 03:42:46,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-01-30 03:42:46,999 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:46,999 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:46,999 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:46,999 INFO L82 PathProgramCache]: Analyzing trace with hash -163925228, now seen corresponding path program 3 times [2018-01-30 03:42:47,000 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:47,000 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:47,000 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:47,000 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:47,000 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:47,006 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:47,086 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 2 proven. 242 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:42:47,086 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:47,086 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 03:42:47,093 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:42:47,096 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:47,098 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:47,104 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:47,114 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:47,115 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:47,116 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:47,116 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:47,117 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:47,124 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:47,125 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 1 proven. 75 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-01-30 03:42:47,262 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:47,262 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-01-30 03:42:47,263 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 03:42:47,263 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 03:42:47,263 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2018-01-30 03:42:47,263 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand 25 states. [2018-01-30 03:42:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:47,808 INFO L93 Difference]: Finished difference Result 190 states and 224 transitions. [2018-01-30 03:42:47,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-30 03:42:47,809 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 71 [2018-01-30 03:42:47,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:47,810 INFO L225 Difference]: With dead ends: 190 [2018-01-30 03:42:47,810 INFO L226 Difference]: Without dead ends: 169 [2018-01-30 03:42:47,810 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=319, Invalid=1241, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 03:42:47,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-01-30 03:42:47,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 144. [2018-01-30 03:42:47,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-30 03:42:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2018-01-30 03:42:47,818 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 71 [2018-01-30 03:42:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:47,818 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2018-01-30 03:42:47,818 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 03:42:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2018-01-30 03:42:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-01-30 03:42:47,819 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:47,819 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:47,819 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:47,820 INFO L82 PathProgramCache]: Analyzing trace with hash -819589022, now seen corresponding path program 1 times [2018-01-30 03:42:47,820 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:47,820 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:47,820 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:47,820 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:47,820 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:47,826 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 288 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:42:47,991 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:47,991 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 03:42:48,003 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:42:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:48,015 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-30 03:42:48,038 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:48,038 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-01-30 03:42:48,038 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 03:42:48,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 03:42:48,039 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-30 03:42:48,039 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 15 states. [2018-01-30 03:42:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:48,133 INFO L93 Difference]: Finished difference Result 194 states and 227 transitions. [2018-01-30 03:42:48,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 03:42:48,134 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2018-01-30 03:42:48,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:48,134 INFO L225 Difference]: With dead ends: 194 [2018-01-30 03:42:48,134 INFO L226 Difference]: Without dead ends: 158 [2018-01-30 03:42:48,135 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-30 03:42:48,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-01-30 03:42:48,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 153. [2018-01-30 03:42:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-01-30 03:42:48,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2018-01-30 03:42:48,140 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 76 [2018-01-30 03:42:48,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:48,141 INFO L432 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2018-01-30 03:42:48,141 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 03:42:48,141 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2018-01-30 03:42:48,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-30 03:42:48,141 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:48,141 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:48,141 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:48,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1815728600, now seen corresponding path program 2 times [2018-01-30 03:42:48,142 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:48,142 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:48,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:48,142 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:42:48,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:48,147 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 2 proven. 338 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:42:48,316 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:48,316 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 03:42:48,321 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:42:48,324 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:48,329 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:48,341 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:48,342 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-30 03:42:48,373 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:48,373 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-01-30 03:42:48,373 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-30 03:42:48,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-30 03:42:48,374 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-30 03:42:48,374 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 16 states. [2018-01-30 03:42:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:48,518 INFO L93 Difference]: Finished difference Result 203 states and 238 transitions. [2018-01-30 03:42:48,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-30 03:42:48,531 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 80 [2018-01-30 03:42:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:48,532 INFO L225 Difference]: With dead ends: 203 [2018-01-30 03:42:48,532 INFO L226 Difference]: Without dead ends: 167 [2018-01-30 03:42:48,532 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-30 03:42:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-30 03:42:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2018-01-30 03:42:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-01-30 03:42:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 191 transitions. [2018-01-30 03:42:48,537 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 191 transitions. Word has length 80 [2018-01-30 03:42:48,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:48,538 INFO L432 AbstractCegarLoop]: Abstraction has 162 states and 191 transitions. [2018-01-30 03:42:48,538 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-30 03:42:48,538 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 191 transitions. [2018-01-30 03:42:48,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-01-30 03:42:48,538 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:48,538 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:48,538 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:48,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1409943314, now seen corresponding path program 3 times [2018-01-30 03:42:48,539 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:48,539 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:48,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:48,539 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:48,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:48,545 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 2 proven. 392 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-30 03:42:48,652 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:48,652 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 03:42:48,658 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:42:48,661 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,676 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,682 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,695 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,701 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,711 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,721 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,731 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,747 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,758 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,765 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,775 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:42:48,785 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:48,786 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-01-30 03:42:49,265 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:49,265 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 30 [2018-01-30 03:42:49,265 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-30 03:42:49,265 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-30 03:42:49,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2018-01-30 03:42:49,266 INFO L87 Difference]: Start difference. First operand 162 states and 191 transitions. Second operand 30 states. [2018-01-30 03:42:50,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:50,564 INFO L93 Difference]: Finished difference Result 258 states and 299 transitions. [2018-01-30 03:42:50,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-01-30 03:42:50,564 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 84 [2018-01-30 03:42:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:50,565 INFO L225 Difference]: With dead ends: 258 [2018-01-30 03:42:50,565 INFO L226 Difference]: Without dead ends: 222 [2018-01-30 03:42:50,567 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2536 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1602, Invalid=6054, Unknown=0, NotChecked=0, Total=7656 [2018-01-30 03:42:50,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-30 03:42:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 115. [2018-01-30 03:42:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-30 03:42:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2018-01-30 03:42:50,585 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 84 [2018-01-30 03:42:50,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:50,585 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2018-01-30 03:42:50,585 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-30 03:42:50,585 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2018-01-30 03:42:50,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-01-30 03:42:50,585 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:50,585 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:50,585 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:50,586 INFO L82 PathProgramCache]: Analyzing trace with hash -999877010, now seen corresponding path program 4 times [2018-01-30 03:42:50,586 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:50,586 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:50,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:50,586 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:50,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:50,603 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 4 proven. 450 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-30 03:42:50,766 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:50,766 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 03:42:50,779 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:42:50,797 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:50,798 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 3 proven. 166 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2018-01-30 03:42:51,359 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:51,359 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 32 [2018-01-30 03:42:51,360 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-30 03:42:51,360 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-30 03:42:51,360 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=758, Unknown=0, NotChecked=0, Total=992 [2018-01-30 03:42:51,360 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand 32 states. [2018-01-30 03:42:52,239 WARN L146 SmtUtils]: Spent 124ms on a formula simplification. DAG size of input: 7 DAG size of output 6 [2018-01-30 03:42:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:52,528 INFO L93 Difference]: Finished difference Result 251 states and 293 transitions. [2018-01-30 03:42:52,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-30 03:42:52,528 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 97 [2018-01-30 03:42:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:52,529 INFO L225 Difference]: With dead ends: 251 [2018-01-30 03:42:52,529 INFO L226 Difference]: Without dead ends: 220 [2018-01-30 03:42:52,530 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=505, Invalid=2147, Unknown=0, NotChecked=0, Total=2652 [2018-01-30 03:42:52,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-01-30 03:42:52,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 192. [2018-01-30 03:42:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-30 03:42:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 225 transitions. [2018-01-30 03:42:52,541 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 225 transitions. Word has length 97 [2018-01-30 03:42:52,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:52,542 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 225 transitions. [2018-01-30 03:42:52,542 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-30 03:42:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 225 transitions. [2018-01-30 03:42:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-01-30 03:42:52,542 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:52,542 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:52,542 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:52,543 INFO L82 PathProgramCache]: Analyzing trace with hash 215623792, now seen corresponding path program 4 times [2018-01-30 03:42:52,543 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:52,543 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:52,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:52,543 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:52,543 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:52,548 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 4 proven. 512 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-30 03:42:52,709 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:52,709 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 03:42:52,724 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:42:52,742 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:52,743 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 54 proven. 177 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2018-01-30 03:42:52,998 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:52,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2018-01-30 03:42:52,999 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-30 03:42:52,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-30 03:42:52,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=924, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 03:42:52,999 INFO L87 Difference]: Start difference. First operand 192 states and 225 transitions. Second operand 35 states. [2018-01-30 03:42:54,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:54,405 INFO L93 Difference]: Finished difference Result 306 states and 352 transitions. [2018-01-30 03:42:54,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-01-30 03:42:54,406 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 102 [2018-01-30 03:42:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:54,407 INFO L225 Difference]: With dead ends: 306 [2018-01-30 03:42:54,407 INFO L226 Difference]: Without dead ends: 254 [2018-01-30 03:42:54,409 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3233 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1874, Invalid=7828, Unknown=0, NotChecked=0, Total=9702 [2018-01-30 03:42:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-01-30 03:42:54,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 135. [2018-01-30 03:42:54,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-01-30 03:42:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 154 transitions. [2018-01-30 03:42:54,417 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 154 transitions. Word has length 102 [2018-01-30 03:42:54,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:54,417 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 154 transitions. [2018-01-30 03:42:54,417 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-30 03:42:54,417 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 154 transitions. [2018-01-30 03:42:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-01-30 03:42:54,418 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:54,418 INFO L350 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:54,418 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:54,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1030352572, now seen corresponding path program 5 times [2018-01-30 03:42:54,418 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:54,418 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:54,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:54,419 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:54,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:54,424 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 6 proven. 578 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-30 03:42:54,566 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:54,566 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 03:42:54,571 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:42:54,574 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,574 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,575 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,576 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,576 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,577 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,578 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,578 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,579 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,580 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,580 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,581 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,582 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,588 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,590 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,591 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,593 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,595 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:54,595 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:54,596 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:54,605 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-01-30 03:42:54,622 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:54,622 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-01-30 03:42:54,622 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 03:42:54,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 03:42:54,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-01-30 03:42:54,622 INFO L87 Difference]: Start difference. First operand 135 states and 154 transitions. Second operand 20 states. [2018-01-30 03:42:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:54,718 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2018-01-30 03:42:54,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-30 03:42:54,719 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 115 [2018-01-30 03:42:54,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:54,720 INFO L225 Difference]: With dead ends: 184 [2018-01-30 03:42:54,720 INFO L226 Difference]: Without dead ends: 143 [2018-01-30 03:42:54,720 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-01-30 03:42:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-30 03:42:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2018-01-30 03:42:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-30 03:42:54,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 160 transitions. [2018-01-30 03:42:54,730 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 160 transitions. Word has length 115 [2018-01-30 03:42:54,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:54,730 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 160 transitions. [2018-01-30 03:42:54,730 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 03:42:54,730 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 160 transitions. [2018-01-30 03:42:54,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-01-30 03:42:54,731 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:54,731 INFO L350 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:54,731 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:54,731 INFO L82 PathProgramCache]: Analyzing trace with hash 950915714, now seen corresponding path program 6 times [2018-01-30 03:42:54,731 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:54,731 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:54,732 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:54,732 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:54,732 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:54,738 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 6 proven. 648 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-30 03:42:55,150 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:55,150 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 03:42:55,154 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:42:55,158 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,159 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,160 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,161 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,163 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,163 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,165 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,166 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,167 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,168 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,168 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,169 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,170 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,171 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,172 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,173 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,174 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:55,174 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:55,176 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 11 proven. 270 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2018-01-30 03:42:55,364 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:55,364 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 38 [2018-01-30 03:42:55,364 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-30 03:42:55,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-30 03:42:55,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 03:42:55,365 INFO L87 Difference]: Start difference. First operand 140 states and 160 transitions. Second operand 38 states. [2018-01-30 03:42:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:56,212 INFO L93 Difference]: Finished difference Result 302 states and 350 transitions. [2018-01-30 03:42:56,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-01-30 03:42:56,212 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 119 [2018-01-30 03:42:56,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:56,213 INFO L225 Difference]: With dead ends: 302 [2018-01-30 03:42:56,213 INFO L226 Difference]: Without dead ends: 261 [2018-01-30 03:42:56,214 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=671, Invalid=3111, Unknown=0, NotChecked=0, Total=3782 [2018-01-30 03:42:56,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-01-30 03:42:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 231. [2018-01-30 03:42:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-01-30 03:42:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 270 transitions. [2018-01-30 03:42:56,228 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 270 transitions. Word has length 119 [2018-01-30 03:42:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:56,228 INFO L432 AbstractCegarLoop]: Abstraction has 231 states and 270 transitions. [2018-01-30 03:42:56,228 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-30 03:42:56,228 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 270 transitions. [2018-01-30 03:42:56,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-01-30 03:42:56,229 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:56,229 INFO L350 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:56,229 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:56,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1239600184, now seen corresponding path program 5 times [2018-01-30 03:42:56,229 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:56,229 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:56,230 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:56,230 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:56,230 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:56,237 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 6 proven. 722 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-30 03:42:56,408 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:56,408 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 03:42:56,413 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:42:56,416 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,417 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,417 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,418 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,421 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,422 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,423 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,423 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,424 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,425 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,425 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,426 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,427 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,427 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,428 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,429 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,430 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,432 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,434 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,436 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:42:56,436 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:56,437 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-01-30 03:42:56,468 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:56,468 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-01-30 03:42:56,469 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-30 03:42:56,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-30 03:42:56,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-01-30 03:42:56,469 INFO L87 Difference]: Start difference. First operand 231 states and 270 transitions. Second operand 22 states. [2018-01-30 03:42:56,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:42:56,602 INFO L93 Difference]: Finished difference Result 313 states and 362 transitions. [2018-01-30 03:42:56,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-30 03:42:56,611 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 124 [2018-01-30 03:42:56,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:42:56,612 INFO L225 Difference]: With dead ends: 313 [2018-01-30 03:42:56,612 INFO L226 Difference]: Without dead ends: 245 [2018-01-30 03:42:56,613 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-01-30 03:42:56,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-01-30 03:42:56,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 240. [2018-01-30 03:42:56,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-01-30 03:42:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 281 transitions. [2018-01-30 03:42:56,628 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 281 transitions. Word has length 124 [2018-01-30 03:42:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:42:56,628 INFO L432 AbstractCegarLoop]: Abstraction has 240 states and 281 transitions. [2018-01-30 03:42:56,628 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-30 03:42:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 281 transitions. [2018-01-30 03:42:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-01-30 03:42:56,629 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:42:56,629 INFO L350 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:42:56,629 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:42:56,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2051248638, now seen corresponding path program 6 times [2018-01-30 03:42:56,629 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:42:56,629 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:42:56,630 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:56,630 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:42:56,630 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:42:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:42:56,637 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:42:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 6 proven. 800 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-30 03:42:57,012 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:42:57,012 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 03:42:57,017 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:42:57,020 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,021 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,022 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,023 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,024 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,025 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,026 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,029 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,030 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,031 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,031 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,032 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,033 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,034 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,035 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,036 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,037 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,039 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:42:57,039 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:42:57,041 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:42:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 74 proven. 300 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2018-01-30 03:42:57,711 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:42:57,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 42 [2018-01-30 03:42:57,712 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-30 03:42:57,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-30 03:42:57,712 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=1334, Unknown=0, NotChecked=0, Total=1722 [2018-01-30 03:42:57,712 INFO L87 Difference]: Start difference. First operand 240 states and 281 transitions. Second operand 42 states. [2018-01-30 03:43:00,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:00,563 INFO L93 Difference]: Finished difference Result 376 states and 431 transitions. [2018-01-30 03:43:00,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-01-30 03:43:00,565 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 128 [2018-01-30 03:43:00,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:00,566 INFO L225 Difference]: With dead ends: 376 [2018-01-30 03:43:00,566 INFO L226 Difference]: Without dead ends: 308 [2018-01-30 03:43:00,568 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4867 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2674, Invalid=11606, Unknown=0, NotChecked=0, Total=14280 [2018-01-30 03:43:00,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-01-30 03:43:00,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 165. [2018-01-30 03:43:00,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-30 03:43:00,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 188 transitions. [2018-01-30 03:43:00,578 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 188 transitions. Word has length 128 [2018-01-30 03:43:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:00,578 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 188 transitions. [2018-01-30 03:43:00,578 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-30 03:43:00,578 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 188 transitions. [2018-01-30 03:43:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-01-30 03:43:00,578 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:00,579 INFO L350 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:00,579 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:00,579 INFO L82 PathProgramCache]: Analyzing trace with hash 644324374, now seen corresponding path program 7 times [2018-01-30 03:43:00,579 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:00,579 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:00,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:00,579 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:00,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:00,585 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 8 proven. 882 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:43:00,819 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:00,819 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) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:00,823 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:43:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:00,840 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:00,852 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-01-30 03:43:00,870 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:00,870 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-01-30 03:43:00,870 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-30 03:43:00,870 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-30 03:43:00,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-01-30 03:43:00,871 INFO L87 Difference]: Start difference. First operand 165 states and 188 transitions. Second operand 24 states. [2018-01-30 03:43:00,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:00,999 INFO L93 Difference]: Finished difference Result 224 states and 251 transitions. [2018-01-30 03:43:00,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 03:43:00,999 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 141 [2018-01-30 03:43:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:00,999 INFO L225 Difference]: With dead ends: 224 [2018-01-30 03:43:00,999 INFO L226 Difference]: Without dead ends: 173 [2018-01-30 03:43:01,000 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-01-30 03:43:01,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-01-30 03:43:01,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 170. [2018-01-30 03:43:01,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-01-30 03:43:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 194 transitions. [2018-01-30 03:43:01,016 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 194 transitions. Word has length 141 [2018-01-30 03:43:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:01,016 INFO L432 AbstractCegarLoop]: Abstraction has 170 states and 194 transitions. [2018-01-30 03:43:01,016 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-30 03:43:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 194 transitions. [2018-01-30 03:43:01,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-01-30 03:43:01,016 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:01,016 INFO L350 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:01,016 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:01,017 INFO L82 PathProgramCache]: Analyzing trace with hash -92752804, now seen corresponding path program 8 times [2018-01-30 03:43:01,017 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:01,017 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:01,017 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:01,017 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:43:01,017 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:01,026 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 8 proven. 968 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:43:01,581 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:01,581 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 03:43:01,586 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:43:01,590 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:01,597 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:01,598 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:01,600 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-01-30 03:43:01,632 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:01,632 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-01-30 03:43:01,632 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 03:43:01,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 03:43:01,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-01-30 03:43:01,633 INFO L87 Difference]: Start difference. First operand 170 states and 194 transitions. Second operand 25 states. [2018-01-30 03:43:01,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:01,759 INFO L93 Difference]: Finished difference Result 229 states and 257 transitions. [2018-01-30 03:43:01,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-30 03:43:01,759 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 145 [2018-01-30 03:43:01,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:01,760 INFO L225 Difference]: With dead ends: 229 [2018-01-30 03:43:01,760 INFO L226 Difference]: Without dead ends: 178 [2018-01-30 03:43:01,760 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-01-30 03:43:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-30 03:43:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 175. [2018-01-30 03:43:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-01-30 03:43:01,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 200 transitions. [2018-01-30 03:43:01,770 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 200 transitions. Word has length 145 [2018-01-30 03:43:01,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:01,770 INFO L432 AbstractCegarLoop]: Abstraction has 175 states and 200 transitions. [2018-01-30 03:43:01,770 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 03:43:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 200 transitions. [2018-01-30 03:43:01,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-01-30 03:43:01,771 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:01,771 INFO L350 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:01,771 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:01,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1273480798, now seen corresponding path program 9 times [2018-01-30 03:43:01,771 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:01,771 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:01,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:01,772 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:01,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:01,778 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 8 proven. 1058 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:43:02,212 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:02,212 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 03:43:02,217 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:43:02,222 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,223 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,224 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,226 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,227 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,229 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,230 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,231 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,232 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,232 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,234 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,235 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,236 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,237 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,238 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,239 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,240 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,241 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,242 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,243 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:02,244 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:02,246 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 16 proven. 441 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2018-01-30 03:43:02,523 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:02,524 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22] total 46 [2018-01-30 03:43:02,524 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-30 03:43:02,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-30 03:43:02,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1583, Unknown=0, NotChecked=0, Total=2070 [2018-01-30 03:43:02,524 INFO L87 Difference]: Start difference. First operand 175 states and 200 transitions. Second operand 46 states. [2018-01-30 03:43:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:03,484 INFO L93 Difference]: Finished difference Result 373 states and 431 transitions. [2018-01-30 03:43:03,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-01-30 03:43:03,484 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 149 [2018-01-30 03:43:03,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:03,485 INFO L225 Difference]: With dead ends: 373 [2018-01-30 03:43:03,485 INFO L226 Difference]: Without dead ends: 322 [2018-01-30 03:43:03,486 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1000, Invalid=4700, Unknown=0, NotChecked=0, Total=5700 [2018-01-30 03:43:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-01-30 03:43:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 288. [2018-01-30 03:43:03,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-01-30 03:43:03,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 337 transitions. [2018-01-30 03:43:03,523 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 337 transitions. Word has length 149 [2018-01-30 03:43:03,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:03,523 INFO L432 AbstractCegarLoop]: Abstraction has 288 states and 337 transitions. [2018-01-30 03:43:03,523 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-30 03:43:03,523 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 337 transitions. [2018-01-30 03:43:03,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-01-30 03:43:03,524 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:03,524 INFO L350 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:03,524 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:03,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1453773556, now seen corresponding path program 7 times [2018-01-30 03:43:03,524 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:03,524 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:03,529 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:03,529 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:03,529 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:03,545 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 8 proven. 1152 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:43:03,922 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:03,922 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:03,928 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:43:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:03,942 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1232 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-01-30 03:43:03,971 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:03,972 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-01-30 03:43:03,972 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 03:43:03,972 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 03:43:03,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-01-30 03:43:03,972 INFO L87 Difference]: Start difference. First operand 288 states and 337 transitions. Second operand 27 states. [2018-01-30 03:43:04,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:04,067 INFO L93 Difference]: Finished difference Result 386 states and 446 transitions. [2018-01-30 03:43:04,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 03:43:04,067 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 154 [2018-01-30 03:43:04,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:04,068 INFO L225 Difference]: With dead ends: 386 [2018-01-30 03:43:04,068 INFO L226 Difference]: Without dead ends: 302 [2018-01-30 03:43:04,068 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-01-30 03:43:04,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-01-30 03:43:04,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 297. [2018-01-30 03:43:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-01-30 03:43:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 348 transitions. [2018-01-30 03:43:04,084 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 348 transitions. Word has length 154 [2018-01-30 03:43:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:04,084 INFO L432 AbstractCegarLoop]: Abstraction has 297 states and 348 transitions. [2018-01-30 03:43:04,084 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 03:43:04,084 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 348 transitions. [2018-01-30 03:43:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-30 03:43:04,085 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:04,085 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:04,085 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:04,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1750279598, now seen corresponding path program 8 times [2018-01-30 03:43:04,085 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:04,085 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:04,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:04,086 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:43:04,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:04,091 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 8 proven. 1250 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:43:04,422 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:04,422 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:04,428 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:43:04,435 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:04,445 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:04,446 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:04,448 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-01-30 03:43:04,478 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:04,478 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-01-30 03:43:04,478 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-30 03:43:04,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-30 03:43:04,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-01-30 03:43:04,479 INFO L87 Difference]: Start difference. First operand 297 states and 348 transitions. Second operand 28 states. [2018-01-30 03:43:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:04,582 INFO L93 Difference]: Finished difference Result 395 states and 457 transitions. [2018-01-30 03:43:04,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 03:43:04,586 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 158 [2018-01-30 03:43:04,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:04,587 INFO L225 Difference]: With dead ends: 395 [2018-01-30 03:43:04,587 INFO L226 Difference]: Without dead ends: 311 [2018-01-30 03:43:04,587 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-01-30 03:43:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-30 03:43:04,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 306. [2018-01-30 03:43:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2018-01-30 03:43:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 359 transitions. [2018-01-30 03:43:04,603 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 359 transitions. Word has length 158 [2018-01-30 03:43:04,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:04,603 INFO L432 AbstractCegarLoop]: Abstraction has 306 states and 359 transitions. [2018-01-30 03:43:04,603 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-30 03:43:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 359 transitions. [2018-01-30 03:43:04,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-01-30 03:43:04,603 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:04,604 INFO L350 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:04,604 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:04,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1371769704, now seen corresponding path program 9 times [2018-01-30 03:43:04,604 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:04,604 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:04,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:04,604 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:04,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:04,610 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 8 proven. 1352 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-01-30 03:43:04,887 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:04,887 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:04,892 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:43:04,896 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,897 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,899 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,900 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,902 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,903 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,904 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,904 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,905 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,906 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,907 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,908 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,909 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,910 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,911 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,912 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,913 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,914 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,915 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,918 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,920 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,921 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,922 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,923 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:04,924 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:04,925 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1432 backedges. 99 proven. 498 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2018-01-30 03:43:05,353 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:05,353 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24] total 51 [2018-01-30 03:43:05,353 INFO L409 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-01-30 03:43:05,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-01-30 03:43:05,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=1952, Unknown=0, NotChecked=0, Total=2550 [2018-01-30 03:43:05,354 INFO L87 Difference]: Start difference. First operand 306 states and 359 transitions. Second operand 51 states. [2018-01-30 03:43:07,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:07,714 INFO L93 Difference]: Finished difference Result 468 states and 536 transitions. [2018-01-30 03:43:07,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-01-30 03:43:07,714 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 162 [2018-01-30 03:43:07,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:07,715 INFO L225 Difference]: With dead ends: 468 [2018-01-30 03:43:07,715 INFO L226 Difference]: Without dead ends: 384 [2018-01-30 03:43:07,717 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7932 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=4266, Invalid=18384, Unknown=0, NotChecked=0, Total=22650 [2018-01-30 03:43:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2018-01-30 03:43:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 205. [2018-01-30 03:43:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-01-30 03:43:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 234 transitions. [2018-01-30 03:43:07,747 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 234 transitions. Word has length 162 [2018-01-30 03:43:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:07,747 INFO L432 AbstractCegarLoop]: Abstraction has 205 states and 234 transitions. [2018-01-30 03:43:07,747 INFO L433 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-01-30 03:43:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 234 transitions. [2018-01-30 03:43:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-01-30 03:43:07,755 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:07,755 INFO L350 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:07,755 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:07,755 INFO L82 PathProgramCache]: Analyzing trace with hash 465844604, now seen corresponding path program 10 times [2018-01-30 03:43:07,755 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:07,755 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:07,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:07,755 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:07,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:07,769 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1583 backedges. 10 proven. 1458 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-01-30 03:43:08,172 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:08,172 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:08,176 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:43:08,194 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:08,196 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1583 backedges. 9 proven. 643 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2018-01-30 03:43:08,670 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:08,670 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25] total 53 [2018-01-30 03:43:08,670 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-30 03:43:08,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-30 03:43:08,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=648, Invalid=2108, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 03:43:08,671 INFO L87 Difference]: Start difference. First operand 205 states and 234 transitions. Second operand 53 states. [2018-01-30 03:43:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:09,847 INFO L93 Difference]: Finished difference Result 434 states and 500 transitions. [2018-01-30 03:43:09,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-01-30 03:43:09,847 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 175 [2018-01-30 03:43:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:09,849 INFO L225 Difference]: With dead ends: 434 [2018-01-30 03:43:09,849 INFO L226 Difference]: Without dead ends: 373 [2018-01-30 03:43:09,850 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1309, Invalid=6347, Unknown=0, NotChecked=0, Total=7656 [2018-01-30 03:43:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-01-30 03:43:09,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 336. [2018-01-30 03:43:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-01-30 03:43:09,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 393 transitions. [2018-01-30 03:43:09,870 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 393 transitions. Word has length 175 [2018-01-30 03:43:09,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:09,870 INFO L432 AbstractCegarLoop]: Abstraction has 336 states and 393 transitions. [2018-01-30 03:43:09,871 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-30 03:43:09,871 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 393 transitions. [2018-01-30 03:43:09,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-01-30 03:43:09,871 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:09,871 INFO L350 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:09,871 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:09,872 INFO L82 PathProgramCache]: Analyzing trace with hash -467019366, now seen corresponding path program 10 times [2018-01-30 03:43:09,872 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:09,872 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:09,872 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:09,872 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:09,872 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:09,878 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 10 proven. 1568 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-01-30 03:43:10,297 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:10,297 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:10,302 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:43:10,317 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:10,319 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 96 proven. 666 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2018-01-30 03:43:10,940 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:10,940 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 27] total 56 [2018-01-30 03:43:10,940 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-30 03:43:10,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-30 03:43:10,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=2379, Unknown=0, NotChecked=0, Total=3080 [2018-01-30 03:43:10,941 INFO L87 Difference]: Start difference. First operand 336 states and 393 transitions. Second operand 56 states. [2018-01-30 03:43:13,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:13,673 INFO L93 Difference]: Finished difference Result 516 states and 589 transitions. [2018-01-30 03:43:13,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-01-30 03:43:13,674 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 180 [2018-01-30 03:43:13,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:13,675 INFO L225 Difference]: With dead ends: 516 [2018-01-30 03:43:13,675 INFO L226 Difference]: Without dead ends: 416 [2018-01-30 03:43:13,677 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9113 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4694, Invalid=21388, Unknown=0, NotChecked=0, Total=26082 [2018-01-30 03:43:13,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-01-30 03:43:13,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 225. [2018-01-30 03:43:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-01-30 03:43:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 256 transitions. [2018-01-30 03:43:13,716 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 256 transitions. Word has length 180 [2018-01-30 03:43:13,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:13,716 INFO L432 AbstractCegarLoop]: Abstraction has 225 states and 256 transitions. [2018-01-30 03:43:13,716 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-30 03:43:13,716 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 256 transitions. [2018-01-30 03:43:13,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-01-30 03:43:13,717 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:13,717 INFO L350 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:13,717 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:13,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1430573898, now seen corresponding path program 11 times [2018-01-30 03:43:13,717 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:13,717 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:13,718 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:13,718 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:13,718 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:13,730 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 12 proven. 1682 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-01-30 03:43:14,332 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:14,332 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:14,338 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:43:14,342 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,348 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,349 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,350 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,350 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,351 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,351 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,352 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,353 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,353 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,354 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,355 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,355 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,356 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,357 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,357 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,358 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,361 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,362 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,363 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,364 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,365 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,366 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,367 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,369 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,371 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,373 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,375 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,377 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,379 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:14,379 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:14,381 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-01-30 03:43:14,420 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:14,420 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-01-30 03:43:14,420 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-30 03:43:14,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-30 03:43:14,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-30 03:43:14,420 INFO L87 Difference]: Start difference. First operand 225 states and 256 transitions. Second operand 32 states. [2018-01-30 03:43:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:14,572 INFO L93 Difference]: Finished difference Result 304 states and 339 transitions. [2018-01-30 03:43:14,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-30 03:43:14,572 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 193 [2018-01-30 03:43:14,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:14,573 INFO L225 Difference]: With dead ends: 304 [2018-01-30 03:43:14,573 INFO L226 Difference]: Without dead ends: 233 [2018-01-30 03:43:14,573 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-30 03:43:14,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-01-30 03:43:14,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 230. [2018-01-30 03:43:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2018-01-30 03:43:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 262 transitions. [2018-01-30 03:43:14,587 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 262 transitions. Word has length 193 [2018-01-30 03:43:14,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:14,587 INFO L432 AbstractCegarLoop]: Abstraction has 230 states and 262 transitions. [2018-01-30 03:43:14,587 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-30 03:43:14,587 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 262 transitions. [2018-01-30 03:43:14,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-01-30 03:43:14,588 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:14,588 INFO L350 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:14,588 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:14,588 INFO L82 PathProgramCache]: Analyzing trace with hash 294024336, now seen corresponding path program 12 times [2018-01-30 03:43:14,588 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:14,588 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:14,589 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:14,589 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:14,589 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:14,598 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 12 proven. 1800 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-01-30 03:43:15,299 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:15,299 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:15,304 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:43:15,308 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,322 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,332 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,345 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,359 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,371 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,382 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,395 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,409 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,422 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,429 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,441 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,455 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,468 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,478 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,485 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,494 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,503 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,512 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,522 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,531 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,540 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,549 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,559 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,568 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,577 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,586 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,596 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,605 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,614 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:15,623 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:15,625 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 26 proven. 828 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2018-01-30 03:43:16,096 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:16,096 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 28] total 59 [2018-01-30 03:43:16,097 INFO L409 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-01-30 03:43:16,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-01-30 03:43:16,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=2630, Unknown=0, NotChecked=0, Total=3422 [2018-01-30 03:43:16,097 INFO L87 Difference]: Start difference. First operand 230 states and 262 transitions. Second operand 59 states. [2018-01-30 03:43:17,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:17,552 INFO L93 Difference]: Finished difference Result 485 states and 557 transitions. [2018-01-30 03:43:17,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-01-30 03:43:17,552 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 197 [2018-01-30 03:43:17,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:17,553 INFO L225 Difference]: With dead ends: 485 [2018-01-30 03:43:17,554 INFO L226 Difference]: Without dead ends: 414 [2018-01-30 03:43:17,554 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2288 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1565, Invalid=7941, Unknown=0, NotChecked=0, Total=9506 [2018-01-30 03:43:17,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-01-30 03:43:17,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 375. [2018-01-30 03:43:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-01-30 03:43:17,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 438 transitions. [2018-01-30 03:43:17,580 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 438 transitions. Word has length 197 [2018-01-30 03:43:17,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:17,581 INFO L432 AbstractCegarLoop]: Abstraction has 375 states and 438 transitions. [2018-01-30 03:43:17,581 INFO L433 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-01-30 03:43:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 438 transitions. [2018-01-30 03:43:17,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-01-30 03:43:17,582 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:17,582 INFO L350 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:17,582 INFO L371 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:17,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1032331874, now seen corresponding path program 11 times [2018-01-30 03:43:17,582 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:17,582 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:17,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:17,583 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:17,583 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:17,589 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 12 proven. 1922 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-01-30 03:43:17,984 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:17,984 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:17,989 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:43:17,995 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:17,996 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:17,997 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:17,997 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:17,998 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:17,999 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:17,999 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,000 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,001 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,001 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,008 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,009 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,010 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,011 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,011 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,012 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,013 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,014 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,015 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,015 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,016 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,017 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,018 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,019 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,020 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,021 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,024 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,025 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,027 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,029 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,031 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,033 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:18,034 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:18,036 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2102 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-01-30 03:43:18,072 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:18,072 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-01-30 03:43:18,073 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-30 03:43:18,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-30 03:43:18,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 03:43:18,073 INFO L87 Difference]: Start difference. First operand 375 states and 438 transitions. Second operand 34 states. [2018-01-30 03:43:18,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:18,213 INFO L93 Difference]: Finished difference Result 505 states and 581 transitions. [2018-01-30 03:43:18,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-30 03:43:18,213 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 202 [2018-01-30 03:43:18,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:18,214 INFO L225 Difference]: With dead ends: 505 [2018-01-30 03:43:18,214 INFO L226 Difference]: Without dead ends: 389 [2018-01-30 03:43:18,215 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 03:43:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-01-30 03:43:18,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 384. [2018-01-30 03:43:18,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2018-01-30 03:43:18,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 449 transitions. [2018-01-30 03:43:18,240 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 449 transitions. Word has length 202 [2018-01-30 03:43:18,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:18,241 INFO L432 AbstractCegarLoop]: Abstraction has 384 states and 449 transitions. [2018-01-30 03:43:18,241 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-30 03:43:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 449 transitions. [2018-01-30 03:43:18,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-01-30 03:43:18,242 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:18,242 INFO L350 BasicCegarLoop]: trace histogram [33, 32, 32, 31, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:18,242 INFO L371 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:18,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2061268904, now seen corresponding path program 12 times [2018-01-30 03:43:18,242 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:18,242 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:18,242 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:18,242 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:18,242 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:18,248 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 12 proven. 2048 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-01-30 03:43:18,709 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:18,709 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:18,714 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:43:18,718 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,724 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,734 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,745 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,752 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,753 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,754 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,755 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,757 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,758 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,759 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,761 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,762 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,763 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,764 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,766 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,767 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,768 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,769 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,770 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,771 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,772 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,773 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,775 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,776 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,777 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,778 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,779 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,780 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,782 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,783 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,784 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,786 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:18,786 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:18,788 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2228 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-01-30 03:43:18,828 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:18,828 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-01-30 03:43:18,828 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-30 03:43:18,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-30 03:43:18,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 03:43:18,829 INFO L87 Difference]: Start difference. First operand 384 states and 449 transitions. Second operand 35 states. [2018-01-30 03:43:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:19,783 INFO L93 Difference]: Finished difference Result 514 states and 592 transitions. [2018-01-30 03:43:19,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-30 03:43:19,784 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 206 [2018-01-30 03:43:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:19,785 INFO L225 Difference]: With dead ends: 514 [2018-01-30 03:43:19,785 INFO L226 Difference]: Without dead ends: 398 [2018-01-30 03:43:19,785 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 03:43:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2018-01-30 03:43:19,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 393. [2018-01-30 03:43:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-01-30 03:43:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 460 transitions. [2018-01-30 03:43:19,812 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 460 transitions. Word has length 206 [2018-01-30 03:43:19,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:19,812 INFO L432 AbstractCegarLoop]: Abstraction has 393 states and 460 transitions. [2018-01-30 03:43:19,812 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-30 03:43:19,812 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 460 transitions. [2018-01-30 03:43:19,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-01-30 03:43:19,813 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:19,813 INFO L350 BasicCegarLoop]: trace histogram [34, 33, 33, 32, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:19,813 INFO L371 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:19,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1613186578, now seen corresponding path program 13 times [2018-01-30 03:43:19,813 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:19,813 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:19,814 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:19,814 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:19,814 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:19,820 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 12 proven. 2178 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-01-30 03:43:21,111 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:21,111 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:21,116 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:43:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:21,137 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2358 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-01-30 03:43:21,177 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:21,177 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-01-30 03:43:21,178 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 03:43:21,178 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 03:43:21,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 03:43:21,178 INFO L87 Difference]: Start difference. First operand 393 states and 460 transitions. Second operand 36 states. [2018-01-30 03:43:21,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:21,331 INFO L93 Difference]: Finished difference Result 523 states and 603 transitions. [2018-01-30 03:43:21,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-30 03:43:21,331 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 210 [2018-01-30 03:43:21,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:21,332 INFO L225 Difference]: With dead ends: 523 [2018-01-30 03:43:21,332 INFO L226 Difference]: Without dead ends: 407 [2018-01-30 03:43:21,333 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 03:43:21,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-01-30 03:43:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 402. [2018-01-30 03:43:21,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2018-01-30 03:43:21,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 471 transitions. [2018-01-30 03:43:21,360 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 471 transitions. Word has length 210 [2018-01-30 03:43:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:21,360 INFO L432 AbstractCegarLoop]: Abstraction has 402 states and 471 transitions. [2018-01-30 03:43:21,360 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 03:43:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 471 transitions. [2018-01-30 03:43:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-30 03:43:21,361 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:21,361 INFO L350 BasicCegarLoop]: trace histogram [35, 34, 34, 33, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:21,361 INFO L371 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:21,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1933678284, now seen corresponding path program 14 times [2018-01-30 03:43:21,361 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:21,361 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:21,362 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:21,362 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:43:21,362 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:21,368 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 12 proven. 2312 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-01-30 03:43:23,231 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:23,231 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:23,236 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:43:23,240 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:23,251 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:23,254 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:23,255 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2492 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-01-30 03:43:23,298 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:23,298 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-01-30 03:43:23,298 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 03:43:23,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 03:43:23,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 03:43:23,299 INFO L87 Difference]: Start difference. First operand 402 states and 471 transitions. Second operand 37 states. [2018-01-30 03:43:23,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:23,457 INFO L93 Difference]: Finished difference Result 532 states and 614 transitions. [2018-01-30 03:43:23,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-30 03:43:23,458 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 214 [2018-01-30 03:43:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:23,458 INFO L225 Difference]: With dead ends: 532 [2018-01-30 03:43:23,459 INFO L226 Difference]: Without dead ends: 416 [2018-01-30 03:43:23,459 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 03:43:23,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2018-01-30 03:43:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 411. [2018-01-30 03:43:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-01-30 03:43:23,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 482 transitions. [2018-01-30 03:43:23,487 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 482 transitions. Word has length 214 [2018-01-30 03:43:23,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:23,487 INFO L432 AbstractCegarLoop]: Abstraction has 411 states and 482 transitions. [2018-01-30 03:43:23,487 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 03:43:23,487 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 482 transitions. [2018-01-30 03:43:23,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-01-30 03:43:23,488 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:23,488 INFO L350 BasicCegarLoop]: trace histogram [36, 35, 35, 34, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:23,488 INFO L371 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:23,488 INFO L82 PathProgramCache]: Analyzing trace with hash 621741434, now seen corresponding path program 15 times [2018-01-30 03:43:23,488 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:23,488 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:23,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:23,489 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:23,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:23,494 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2630 backedges. 12 proven. 2450 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-01-30 03:43:24,196 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:24,196 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:24,201 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:43:24,205 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,206 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,208 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,209 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,211 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,218 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,220 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,221 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,222 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,223 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,224 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,225 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,226 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,227 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,228 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,229 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,230 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,231 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,232 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,233 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,234 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,235 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,237 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,238 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,239 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,240 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,241 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,242 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,244 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,245 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,246 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,248 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:24,248 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:24,250 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:24,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2630 backedges. 137 proven. 963 refuted. 0 times theorem prover too weak. 1530 trivial. 0 not checked. [2018-01-30 03:43:24,989 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:24,989 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 30] total 66 [2018-01-30 03:43:24,989 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-30 03:43:24,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-30 03:43:24,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1021, Invalid=3269, Unknown=0, NotChecked=0, Total=4290 [2018-01-30 03:43:24,990 INFO L87 Difference]: Start difference. First operand 411 states and 482 transitions. Second operand 66 states. [2018-01-30 03:43:28,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:28,760 INFO L93 Difference]: Finished difference Result 619 states and 707 transitions. [2018-01-30 03:43:28,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-01-30 03:43:28,761 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 218 [2018-01-30 03:43:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:28,762 INFO L225 Difference]: With dead ends: 619 [2018-01-30 03:43:28,762 INFO L226 Difference]: Without dead ends: 503 [2018-01-30 03:43:28,763 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13924 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=7177, Invalid=31829, Unknown=0, NotChecked=0, Total=39006 [2018-01-30 03:43:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2018-01-30 03:43:28,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 270. [2018-01-30 03:43:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-01-30 03:43:28,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 308 transitions. [2018-01-30 03:43:28,782 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 308 transitions. Word has length 218 [2018-01-30 03:43:28,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:28,782 INFO L432 AbstractCegarLoop]: Abstraction has 270 states and 308 transitions. [2018-01-30 03:43:28,782 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-30 03:43:28,782 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 308 transitions. [2018-01-30 03:43:28,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-01-30 03:43:28,782 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:28,783 INFO L350 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:28,783 INFO L371 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:28,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1983317366, now seen corresponding path program 13 times [2018-01-30 03:43:28,783 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:28,783 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:28,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:28,783 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:28,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:28,789 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 14 proven. 2592 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-01-30 03:43:29,801 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:29,801 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:29,806 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:43:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:29,828 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-01-30 03:43:29,876 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:29,876 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-01-30 03:43:29,876 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-30 03:43:29,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-30 03:43:29,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 03:43:29,877 INFO L87 Difference]: Start difference. First operand 270 states and 308 transitions. Second operand 39 states. [2018-01-30 03:43:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:30,015 INFO L93 Difference]: Finished difference Result 359 states and 401 transitions. [2018-01-30 03:43:30,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-30 03:43:30,015 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 231 [2018-01-30 03:43:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:30,016 INFO L225 Difference]: With dead ends: 359 [2018-01-30 03:43:30,016 INFO L226 Difference]: Without dead ends: 278 [2018-01-30 03:43:30,016 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 03:43:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-01-30 03:43:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 275. [2018-01-30 03:43:30,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-01-30 03:43:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 314 transitions. [2018-01-30 03:43:30,041 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 314 transitions. Word has length 231 [2018-01-30 03:43:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:30,041 INFO L432 AbstractCegarLoop]: Abstraction has 275 states and 314 transitions. [2018-01-30 03:43:30,041 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-30 03:43:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 314 transitions. [2018-01-30 03:43:30,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-01-30 03:43:30,042 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:30,042 INFO L350 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:30,042 INFO L371 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:30,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1954840004, now seen corresponding path program 14 times [2018-01-30 03:43:30,042 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:30,042 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:30,043 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:30,043 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 03:43:30,043 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:30,049 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2983 backedges. 14 proven. 2738 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-01-30 03:43:30,558 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:30,558 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:30,562 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 03:43:30,567 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:30,580 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:30,582 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:30,584 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2983 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-01-30 03:43:30,624 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:30,624 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-01-30 03:43:30,624 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-01-30 03:43:30,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-01-30 03:43:30,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 03:43:30,625 INFO L87 Difference]: Start difference. First operand 275 states and 314 transitions. Second operand 40 states. [2018-01-30 03:43:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:30,770 INFO L93 Difference]: Finished difference Result 364 states and 407 transitions. [2018-01-30 03:43:30,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-30 03:43:30,770 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 235 [2018-01-30 03:43:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:30,771 INFO L225 Difference]: With dead ends: 364 [2018-01-30 03:43:30,771 INFO L226 Difference]: Without dead ends: 283 [2018-01-30 03:43:30,771 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 03:43:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-01-30 03:43:30,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 280. [2018-01-30 03:43:30,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-01-30 03:43:30,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 320 transitions. [2018-01-30 03:43:30,790 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 320 transitions. Word has length 235 [2018-01-30 03:43:30,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:30,790 INFO L432 AbstractCegarLoop]: Abstraction has 280 states and 320 transitions. [2018-01-30 03:43:30,790 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-01-30 03:43:30,790 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 320 transitions. [2018-01-30 03:43:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-01-30 03:43:30,791 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:30,791 INFO L350 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:30,791 INFO L371 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:30,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1023945730, now seen corresponding path program 15 times [2018-01-30 03:43:30,791 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:30,791 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:30,792 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:30,792 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:30,792 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:30,798 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3133 backedges. 14 proven. 2888 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-01-30 03:43:31,379 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:31,379 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:31,383 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 03:43:31,387 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,388 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,390 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,391 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,393 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,394 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,396 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,398 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,399 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,400 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,401 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,403 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,404 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,405 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,406 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,407 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,408 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,409 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,411 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,412 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,413 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,414 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,415 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,417 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,418 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,419 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,420 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,421 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,422 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,424 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,425 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,426 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 03:43:31,427 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:31,429 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3133 backedges. 31 proven. 1206 refuted. 0 times theorem prover too weak. 1896 trivial. 0 not checked. [2018-01-30 03:43:32,000 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:32,000 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 31] total 70 [2018-01-30 03:43:32,001 INFO L409 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-01-30 03:43:32,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-01-30 03:43:32,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1180, Invalid=3650, Unknown=0, NotChecked=0, Total=4830 [2018-01-30 03:43:32,001 INFO L87 Difference]: Start difference. First operand 280 states and 320 transitions. Second operand 70 states. [2018-01-30 03:43:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:34,162 INFO L93 Difference]: Finished difference Result 586 states and 674 transitions. [2018-01-30 03:43:34,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-01-30 03:43:34,163 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 239 [2018-01-30 03:43:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:34,164 INFO L225 Difference]: With dead ends: 586 [2018-01-30 03:43:34,164 INFO L226 Difference]: Without dead ends: 505 [2018-01-30 03:43:34,164 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3267 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2383, Invalid=11423, Unknown=0, NotChecked=0, Total=13806 [2018-01-30 03:43:34,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2018-01-30 03:43:34,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 459. [2018-01-30 03:43:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-01-30 03:43:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 538 transitions. [2018-01-30 03:43:34,204 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 538 transitions. Word has length 239 [2018-01-30 03:43:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:34,204 INFO L432 AbstractCegarLoop]: Abstraction has 459 states and 538 transitions. [2018-01-30 03:43:34,204 INFO L433 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-01-30 03:43:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 538 transitions. [2018-01-30 03:43:34,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-01-30 03:43:34,205 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:34,205 INFO L350 BasicCegarLoop]: trace histogram [40, 39, 39, 38, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:34,205 INFO L371 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:34,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1400030344, now seen corresponding path program 16 times [2018-01-30 03:43:34,205 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:34,205 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:34,206 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:34,206 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:34,206 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:34,212 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3287 backedges. 14 proven. 3042 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-01-30 03:43:34,791 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:34,791 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:34,810 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:43:34,828 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:34,830 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3287 backedges. 136 proven. 1255 refuted. 0 times theorem prover too weak. 1896 trivial. 0 not checked. [2018-01-30 03:43:35,974 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:35,974 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 33] total 73 [2018-01-30 03:43:35,974 INFO L409 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-01-30 03:43:35,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-01-30 03:43:35,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1250, Invalid=4006, Unknown=0, NotChecked=0, Total=5256 [2018-01-30 03:43:35,975 INFO L87 Difference]: Start difference. First operand 459 states and 538 transitions. Second operand 73 states. [2018-01-30 03:43:40,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:40,841 INFO L93 Difference]: Finished difference Result 689 states and 786 transitions. [2018-01-30 03:43:40,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-01-30 03:43:40,842 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 244 [2018-01-30 03:43:40,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:40,843 INFO L225 Difference]: With dead ends: 689 [2018-01-30 03:43:40,844 INFO L226 Difference]: Without dead ends: 557 [2018-01-30 03:43:40,845 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17111 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=8669, Invalid=39073, Unknown=0, NotChecked=0, Total=47742 [2018-01-30 03:43:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2018-01-30 03:43:40,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 300. [2018-01-30 03:43:40,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-01-30 03:43:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 342 transitions. [2018-01-30 03:43:40,869 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 342 transitions. Word has length 244 [2018-01-30 03:43:40,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:40,869 INFO L432 AbstractCegarLoop]: Abstraction has 300 states and 342 transitions. [2018-01-30 03:43:40,869 INFO L433 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-01-30 03:43:40,869 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 342 transitions. [2018-01-30 03:43:40,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-01-30 03:43:40,870 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:40,870 INFO L350 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:40,870 INFO L371 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:40,870 INFO L82 PathProgramCache]: Analyzing trace with hash 181761616, now seen corresponding path program 16 times [2018-01-30 03:43:40,870 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:40,870 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:40,871 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:40,871 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:40,871 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:40,877 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3520 backedges. 16 proven. 3200 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-01-30 03:43:41,468 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:41,468 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:41,486 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 03:43:41,507 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:41,510 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3520 backedges. 15 proven. 1461 refuted. 0 times theorem prover too weak. 2044 trivial. 0 not checked. [2018-01-30 03:43:42,257 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:42,257 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 34] total 75 [2018-01-30 03:43:42,258 INFO L409 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-01-30 03:43:42,258 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-01-30 03:43:42,258 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1320, Invalid=4230, Unknown=0, NotChecked=0, Total=5550 [2018-01-30 03:43:42,258 INFO L87 Difference]: Start difference. First operand 300 states and 342 transitions. Second operand 75 states. [2018-01-30 03:43:44,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:44,940 INFO L93 Difference]: Finished difference Result 627 states and 719 transitions. [2018-01-30 03:43:44,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-01-30 03:43:44,941 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 257 [2018-01-30 03:43:44,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:44,942 INFO L225 Difference]: With dead ends: 627 [2018-01-30 03:43:44,942 INFO L226 Difference]: Without dead ends: 536 [2018-01-30 03:43:44,943 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3767 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2601, Invalid=13149, Unknown=0, NotChecked=0, Total=15750 [2018-01-30 03:43:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2018-01-30 03:43:44,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 489. [2018-01-30 03:43:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2018-01-30 03:43:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 572 transitions. [2018-01-30 03:43:44,983 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 572 transitions. Word has length 257 [2018-01-30 03:43:44,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:44,983 INFO L432 AbstractCegarLoop]: Abstraction has 489 states and 572 transitions. [2018-01-30 03:43:44,983 INFO L433 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-01-30 03:43:44,983 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 572 transitions. [2018-01-30 03:43:44,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-01-30 03:43:44,984 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:44,984 INFO L350 BasicCegarLoop]: trace histogram [42, 41, 41, 40, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:44,984 INFO L371 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:44,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1102225526, now seen corresponding path program 17 times [2018-01-30 03:43:44,985 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:44,985 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:44,985 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:44,985 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:44,985 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:44,992 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:45,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3682 backedges. 16 proven. 3362 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-01-30 03:43:45,618 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:45,618 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:45,635 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 03:43:45,639 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,646 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,655 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,664 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,676 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,677 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,677 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,678 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,679 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,679 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,680 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,681 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,682 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,682 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,683 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,684 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,685 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,685 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,686 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,687 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,688 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,688 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,689 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,690 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,691 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,692 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,694 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,695 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,696 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,697 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,697 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,698 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,699 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,701 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,703 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,705 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,707 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,709 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,711 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,713 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,715 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,718 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 03:43:45,718 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:45,720 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3682 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-01-30 03:43:45,774 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:45,774 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-01-30 03:43:45,774 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-30 03:43:45,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-30 03:43:45,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-01-30 03:43:45,775 INFO L87 Difference]: Start difference. First operand 489 states and 572 transitions. Second operand 44 states. [2018-01-30 03:43:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 03:43:45,986 INFO L93 Difference]: Finished difference Result 651 states and 749 transitions. [2018-01-30 03:43:45,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-01-30 03:43:45,987 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 262 [2018-01-30 03:43:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 03:43:45,988 INFO L225 Difference]: With dead ends: 651 [2018-01-30 03:43:45,988 INFO L226 Difference]: Without dead ends: 503 [2018-01-30 03:43:45,988 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-01-30 03:43:45,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2018-01-30 03:43:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 498. [2018-01-30 03:43:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2018-01-30 03:43:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 583 transitions. [2018-01-30 03:43:46,028 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 583 transitions. Word has length 262 [2018-01-30 03:43:46,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 03:43:46,028 INFO L432 AbstractCegarLoop]: Abstraction has 498 states and 583 transitions. [2018-01-30 03:43:46,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-30 03:43:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 583 transitions. [2018-01-30 03:43:46,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-01-30 03:43:46,030 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 03:43:46,030 INFO L350 BasicCegarLoop]: trace histogram [43, 42, 42, 41, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 03:43:46,030 INFO L371 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 03:43:46,030 INFO L82 PathProgramCache]: Analyzing trace with hash -495541296, now seen corresponding path program 18 times [2018-01-30 03:43:46,030 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 03:43:46,030 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 03:43:46,030 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:46,030 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 03:43:46,030 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 03:43:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 03:43:46,037 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 03:43:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3848 backedges. 16 proven. 3528 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-01-30 03:43:46,719 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 03:43:46,719 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 03:43:46,723 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 03:43:46,727 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,728 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,730 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,730 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,732 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,733 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,734 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,735 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,736 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,738 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,739 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,740 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,742 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,743 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,745 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,746 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,748 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,749 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,750 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,751 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,753 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,754 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,755 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,756 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,758 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,759 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,761 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,762 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,763 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,765 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,766 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,767 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,769 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,770 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,772 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,773 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,775 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,776 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,778 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,780 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,781 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 03:43:46,782 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 03:43:46,785 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 03:43:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3848 backedges. 167 proven. 1510 refuted. 0 times theorem prover too weak. 2171 trivial. 0 not checked. [2018-01-30 03:43:47,715 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 03:43:47,716 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 36] total 79 [2018-01-30 03:43:47,716 INFO L409 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-01-30 03:43:47,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-01-30 03:43:47,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1448, Invalid=4714, Unknown=0, NotChecked=0, Total=6162 [2018-01-30 03:43:47,716 INFO L87 Difference]: Start difference. First operand 498 states and 583 transitions. Second operand 79 states. Received shutdown request... [2018-01-30 03:43:49,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-01-30 03:43:49,956 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 03:43:49,966 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 03:43:49,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 03:43:49 BasicIcfg [2018-01-30 03:43:49,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 03:43:49,967 INFO L168 Benchmark]: Toolchain (without parser) took 68077.70 ms. Allocated memory was 151.5 MB in the beginning and 661.7 MB in the end (delta: 510.1 MB). Free memory was 116.7 MB in the beginning and 588.7 MB in the end (delta: -472.0 MB). Peak memory consumption was 508.0 MB. Max. memory is 5.3 GB. [2018-01-30 03:43:49,968 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 151.5 MB. Free memory is still 121.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 03:43:49,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 104.94 ms. Allocated memory is still 151.5 MB. Free memory was 116.5 MB in the beginning and 108.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-30 03:43:49,968 INFO L168 Benchmark]: Boogie Preprocessor took 16.99 ms. Allocated memory is still 151.5 MB. Free memory was 108.5 MB in the beginning and 107.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. [2018-01-30 03:43:49,968 INFO L168 Benchmark]: RCFGBuilder took 241.74 ms. Allocated memory is still 151.5 MB. Free memory was 106.8 MB in the beginning and 96.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. [2018-01-30 03:43:49,969 INFO L168 Benchmark]: IcfgTransformer took 13.60 ms. Allocated memory is still 151.5 MB. Free memory was 96.1 MB in the beginning and 94.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-01-30 03:43:49,969 INFO L168 Benchmark]: TraceAbstraction took 67697.95 ms. Allocated memory was 151.5 MB in the beginning and 661.7 MB in the end (delta: 510.1 MB). Free memory was 94.6 MB in the beginning and 588.7 MB in the end (delta: -494.2 MB). Peak memory consumption was 485.8 MB. Max. memory is 5.3 GB. [2018-01-30 03:43:49,970 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 121.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 104.94 ms. Allocated memory is still 151.5 MB. Free memory was 116.5 MB in the beginning and 108.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 16.99 ms. Allocated memory is still 151.5 MB. Free memory was 108.5 MB in the beginning and 107.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. * RCFGBuilder took 241.74 ms. Allocated memory is still 151.5 MB. Free memory was 106.8 MB in the beginning and 96.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. * IcfgTransformer took 13.60 ms. Allocated memory is still 151.5 MB. Free memory was 96.1 MB in the beginning and 94.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 67697.95 ms. Allocated memory was 151.5 MB in the beginning and 661.7 MB in the end (delta: 510.1 MB). Free memory was 94.6 MB in the beginning and 588.7 MB in the end (delta: -494.2 MB). Peak memory consumption was 485.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (498states) and interpolant automaton (currently 91 states, 79 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 9. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. TIMEOUT Result, 67.6s OverallTime, 44 OverallIterations, 43 TraceHistogramMax, 38.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1335 SDtfs, 5867 SDslu, 30743 SDs, 0 SdLazy, 35953 SolverSat, 1021 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7908 GetRequests, 5522 SyntacticMatches, 0 SemanticMatches, 2385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81715 ImplicationChecksByTransitivity, 40.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=498occurred in iteration=43, 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: 0.6s AutomataMinimizationTime, 43 MinimizatonAttempts, 1702 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 25.4s InterpolantComputationTime, 11729 NumberOfCodeBlocks, 11375 NumberOfCodeBlocksAsserted, 497 NumberOfCheckSat, 11643 ConstructedInterpolants, 984 QuantifiedInterpolants, 8372559 SizeOfPredicates, 256 NumberOfNonLiveVariables, 7874 ConjunctsInSsa, 1245 ConjunctsInUnsatCore, 86 InterpolantComputations, 2 PerfectInterpolantSequences, 23319/110700 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/standard_minInArray_true-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_03-43-49-982.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_minInArray_true-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_03-43-49-982.csv Completed graceful shutdown