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_init3_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 02:50:24,667 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 02:50:24,668 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 02:50:24,677 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 02:50:24,677 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 02:50:24,678 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 02:50:24,679 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 02:50:24,679 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 02:50:24,680 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 02:50:24,681 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 02:50:24,681 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 02:50:24,681 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 02:50:24,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 02:50:24,683 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 02:50:24,683 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 02:50:24,684 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 02:50:24,685 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 02:50:24,686 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 02:50:24,687 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 02:50:24,688 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 02:50:24,689 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-30 02:50:24,689 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-30 02:50:24,689 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-30 02:50:24,690 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-30 02:50:24,690 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-30 02:50:24,691 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-30 02:50:24,691 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-30 02:50:24,691 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-30 02:50:24,692 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-30 02:50:24,692 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-30 02:50:24,692 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-30 02:50:24,692 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 02:50:24,697 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 02:50:24,697 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 02:50:24,698 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 02:50:24,698 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 02:50:24,698 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 02:50:24,698 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 02:50:24,698 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 02:50:24,698 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 02:50:24,698 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 02:50:24,699 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 02:50:24,699 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 02:50:24,699 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 02:50:24,699 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 02:50:24,699 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 02:50:24,699 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 02:50:24,699 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 02:50:24,699 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 02:50:24,699 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 02:50:24,699 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 02:50:24,699 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 02:50:24,699 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 02:50:24,700 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 02:50:24,700 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 02:50:24,700 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 02:50:24,700 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 02:50:24,700 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 02:50:24,700 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 02:50:24,700 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 02:50:24,700 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 02:50:24,700 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 02:50:24,700 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 02:50:24,700 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 02:50:24,701 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 02:50:24,701 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 02:50:24,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 02:50:24,726 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 02:50:24,728 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 02:50:24,728 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 02:50:24,729 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 02:50:24,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init3_false-unreach-call_ground.i [2018-01-30 02:50:24,791 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 02:50:24,792 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 02:50:24,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 02:50:24,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 02:50:24,798 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 02:50:24,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:50:24" (1/1) ... [2018-01-30 02:50:24,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4e180f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:50:24, skipping insertion in model container [2018-01-30 02:50:24,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:50:24" (1/1) ... [2018-01-30 02:50:24,811 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:50:24,821 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:50:24,897 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:50:24,905 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:50:24,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:50:24 WrapperNode [2018-01-30 02:50:24,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 02:50:24,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 02:50:24,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 02:50:24,909 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 02:50:24,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:50:24" (1/1) ... [2018-01-30 02:50:24,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:50:24" (1/1) ... [2018-01-30 02:50:24,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:50:24" (1/1) ... [2018-01-30 02:50:24,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:50:24" (1/1) ... [2018-01-30 02:50:24,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:50:24" (1/1) ... [2018-01-30 02:50:24,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:50:24" (1/1) ... [2018-01-30 02:50:24,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:50:24" (1/1) ... [2018-01-30 02:50:24,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 02:50:24,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 02:50:24,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 02:50:24,926 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 02:50:24,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:50:24" (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 02:50:24,960 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 02:50:24,960 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 02:50:24,960 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 02:50:24,960 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 02:50:24,960 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 02:50:24,960 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 02:50:24,961 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 02:50:24,961 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 02:50:24,961 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 02:50:25,304 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 02:50:25,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:50:25 BoogieIcfgContainer [2018-01-30 02:50:25,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 02:50:25,305 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 02:50:25,305 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 02:50:25,306 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 02:50:25,308 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:50:25" (1/1) ... [2018-01-30 02:50:25,310 WARN L213 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-01-30 02:50:25,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:50:25 BasicIcfg [2018-01-30 02:50:25,316 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 02:50:25,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 02:50:25,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 02:50:25,318 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 02:50:25,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:50:24" (1/4) ... [2018-01-30 02:50:25,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcfe91c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:50:25, skipping insertion in model container [2018-01-30 02:50:25,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:50:24" (2/4) ... [2018-01-30 02:50:25,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcfe91c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:50:25, skipping insertion in model container [2018-01-30 02:50:25,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:50:25" (3/4) ... [2018-01-30 02:50:25,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fcfe91c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:50:25, skipping insertion in model container [2018-01-30 02:50:25,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:50:25" (4/4) ... [2018-01-30 02:50:25,321 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_init3_false-unreach-call_ground.ileft_unchanged_by_heapseparator [2018-01-30 02:50:25,326 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 02:50:25,330 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 02:50:25,354 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 02:50:25,354 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 02:50:25,354 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 02:50:25,354 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 02:50:25,354 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 02:50:25,354 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 02:50:25,354 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 02:50:25,354 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 02:50:25,355 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 02:50:25,363 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-01-30 02:50:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-30 02:50:25,367 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:25,368 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:25,368 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:25,371 INFO L82 PathProgramCache]: Analyzing trace with hash 2125623199, now seen corresponding path program 1 times [2018-01-30 02:50:25,372 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:25,372 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:25,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:25,401 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:25,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:25,421 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:25,437 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 02:50:25,438 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:50:25,439 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 02:50:25,440 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 02:50:25,447 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 02:50:25,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 02:50:25,449 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-01-30 02:50:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:25,462 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2018-01-30 02:50:25,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 02:50:25,463 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-30 02:50:25,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:25,468 INFO L225 Difference]: With dead ends: 68 [2018-01-30 02:50:25,468 INFO L226 Difference]: Without dead ends: 34 [2018-01-30 02:50:25,470 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 02:50:25,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-01-30 02:50:25,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-01-30 02:50:25,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-01-30 02:50:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-01-30 02:50:25,493 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 19 [2018-01-30 02:50:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:25,493 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-01-30 02:50:25,493 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 02:50:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-01-30 02:50:25,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-30 02:50:25,494 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:25,494 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:25,494 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:25,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1132732109, now seen corresponding path program 1 times [2018-01-30 02:50:25,494 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:25,494 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:25,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:25,495 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:25,495 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:25,500 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:25,547 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 02:50:25,547 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:50:25,547 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 02:50:25,548 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 02:50:25,548 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 02:50:25,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 02:50:25,548 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 3 states. [2018-01-30 02:50:25,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:25,740 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2018-01-30 02:50:25,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 02:50:25,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-30 02:50:25,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:25,741 INFO L225 Difference]: With dead ends: 70 [2018-01-30 02:50:25,741 INFO L226 Difference]: Without dead ends: 46 [2018-01-30 02:50:25,741 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 02:50:25,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-30 02:50:25,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2018-01-30 02:50:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-30 02:50:25,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-01-30 02:50:25,744 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 22 [2018-01-30 02:50:25,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:25,745 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-01-30 02:50:25,745 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 02:50:25,745 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-01-30 02:50:25,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-30 02:50:25,745 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:25,745 INFO L350 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:25,745 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:25,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1796559150, now seen corresponding path program 1 times [2018-01-30 02:50:25,746 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:25,746 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:25,746 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:25,746 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:25,746 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:25,755 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-30 02:50:25,795 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:25,795 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 02:50:25,809 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:25,832 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-30 02:50:25,860 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:25,861 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-01-30 02:50:25,861 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 02:50:25,861 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 02:50:25,861 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-30 02:50:25,861 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2018-01-30 02:50:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:26,109 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2018-01-30 02:50:26,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-30 02:50:26,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-30 02:50:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:26,112 INFO L225 Difference]: With dead ends: 86 [2018-01-30 02:50:26,112 INFO L226 Difference]: Without dead ends: 58 [2018-01-30 02:50:26,112 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 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 02:50:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-01-30 02:50:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2018-01-30 02:50:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-30 02:50:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-01-30 02:50:26,123 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 34 [2018-01-30 02:50:26,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:26,123 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-01-30 02:50:26,123 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 02:50:26,123 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-01-30 02:50:26,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-30 02:50:26,124 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:26,124 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:26,124 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:26,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1575059287, now seen corresponding path program 2 times [2018-01-30 02:50:26,125 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:26,125 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:26,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:26,127 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:26,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:26,141 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-30 02:50:26,213 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:26,213 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 02:50:26,223 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:50:26,232 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:26,236 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:26,237 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:26,239 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-30 02:50:26,261 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:26,261 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 02:50:26,261 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 02:50:26,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 02:50:26,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-30 02:50:26,262 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 5 states. [2018-01-30 02:50:26,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:26,436 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2018-01-30 02:50:26,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-30 02:50:26,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2018-01-30 02:50:26,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:26,437 INFO L225 Difference]: With dead ends: 106 [2018-01-30 02:50:26,437 INFO L226 Difference]: Without dead ends: 70 [2018-01-30 02:50:26,437 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 02:50:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-01-30 02:50:26,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2018-01-30 02:50:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-30 02:50:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-01-30 02:50:26,442 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 46 [2018-01-30 02:50:26,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:26,442 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-01-30 02:50:26,442 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 02:50:26,442 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-01-30 02:50:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-01-30 02:50:26,443 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:26,443 INFO L350 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:26,443 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:26,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1695699036, now seen corresponding path program 3 times [2018-01-30 02:50:26,443 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:26,443 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:26,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:26,444 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:26,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:26,453 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-01-30 02:50:26,545 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:26,545 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 02:50:26,559 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:50:26,564 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:26,566 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:26,568 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:26,569 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:26,570 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:26,571 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-01-30 02:50:26,592 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:26,592 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-01-30 02:50:26,592 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 02:50:26,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 02:50:26,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-30 02:50:26,593 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 6 states. [2018-01-30 02:50:26,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:26,683 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2018-01-30 02:50:26,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 02:50:26,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2018-01-30 02:50:26,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:26,684 INFO L225 Difference]: With dead ends: 126 [2018-01-30 02:50:26,684 INFO L226 Difference]: Without dead ends: 82 [2018-01-30 02:50:26,684 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 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 02:50:26,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-01-30 02:50:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2018-01-30 02:50:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-30 02:50:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2018-01-30 02:50:26,689 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 58 [2018-01-30 02:50:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:26,689 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2018-01-30 02:50:26,689 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 02:50:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2018-01-30 02:50:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-01-30 02:50:26,690 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:26,692 INFO L350 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:26,692 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:26,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1698242079, now seen corresponding path program 4 times [2018-01-30 02:50:26,692 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:26,692 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:26,693 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:26,693 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:26,693 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:26,708 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-01-30 02:50:26,958 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:26,958 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 02:50:26,963 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:50:26,982 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:26,984 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-01-30 02:50:27,005 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:27,005 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-01-30 02:50:27,006 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 02:50:27,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 02:50:27,006 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:50:27,006 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 7 states. [2018-01-30 02:50:27,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:27,223 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2018-01-30 02:50:27,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 02:50:27,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2018-01-30 02:50:27,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:27,223 INFO L225 Difference]: With dead ends: 146 [2018-01-30 02:50:27,224 INFO L226 Difference]: Without dead ends: 94 [2018-01-30 02:50:27,224 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:50:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-01-30 02:50:27,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2018-01-30 02:50:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-01-30 02:50:27,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2018-01-30 02:50:27,228 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 70 [2018-01-30 02:50:27,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:27,228 INFO L432 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2018-01-30 02:50:27,228 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 02:50:27,228 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2018-01-30 02:50:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-01-30 02:50:27,229 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:27,229 INFO L350 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:27,229 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:27,229 INFO L82 PathProgramCache]: Analyzing trace with hash 149484518, now seen corresponding path program 5 times [2018-01-30 02:50:27,229 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:27,229 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:27,230 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:27,230 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:27,230 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:27,241 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-01-30 02:50:27,318 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:27,319 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:50:27,323 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:50:27,328 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:27,336 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:27,338 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:27,340 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:27,343 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:27,348 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:27,349 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:27,350 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-01-30 02:50:27,376 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:27,376 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-01-30 02:50:27,376 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-30 02:50:27,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-30 02:50:27,377 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-30 02:50:27,377 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand 8 states. [2018-01-30 02:50:27,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:27,446 INFO L93 Difference]: Finished difference Result 166 states and 176 transitions. [2018-01-30 02:50:27,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-30 02:50:27,446 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2018-01-30 02:50:27,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:27,447 INFO L225 Difference]: With dead ends: 166 [2018-01-30 02:50:27,447 INFO L226 Difference]: Without dead ends: 106 [2018-01-30 02:50:27,447 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 83 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 02:50:27,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-01-30 02:50:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2018-01-30 02:50:27,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-01-30 02:50:27,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2018-01-30 02:50:27,451 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 82 [2018-01-30 02:50:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:27,451 INFO L432 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2018-01-30 02:50:27,451 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-30 02:50:27,451 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2018-01-30 02:50:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-01-30 02:50:27,452 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:27,452 INFO L350 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:27,452 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:27,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1023261077, now seen corresponding path program 6 times [2018-01-30 02:50:27,452 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:27,452 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:27,453 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:27,453 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:27,453 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:27,463 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-01-30 02:50:27,539 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:27,539 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 02:50:27,547 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:50:27,552 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:27,566 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:27,573 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:27,589 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:27,596 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:27,609 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:27,616 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:27,628 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:27,630 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-01-30 02:50:27,661 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:27,661 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-30 02:50:27,662 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 02:50:27,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 02:50:27,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:50:27,662 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 9 states. [2018-01-30 02:50:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:27,865 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2018-01-30 02:50:27,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 02:50:27,865 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2018-01-30 02:50:27,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:27,865 INFO L225 Difference]: With dead ends: 186 [2018-01-30 02:50:27,866 INFO L226 Difference]: Without dead ends: 118 [2018-01-30 02:50:27,866 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:50:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-30 02:50:27,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2018-01-30 02:50:27,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-01-30 02:50:27,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2018-01-30 02:50:27,873 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 94 [2018-01-30 02:50:27,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:27,873 INFO L432 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2018-01-30 02:50:27,873 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 02:50:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2018-01-30 02:50:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-01-30 02:50:27,874 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:27,874 INFO L350 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:27,877 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:27,877 INFO L82 PathProgramCache]: Analyzing trace with hash -700671632, now seen corresponding path program 7 times [2018-01-30 02:50:27,877 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:27,877 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:27,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:27,878 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:27,878 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:27,888 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2018-01-30 02:50:27,997 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:27,997 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 02:50:28,005 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:28,020 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2018-01-30 02:50:28,051 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:28,051 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-01-30 02:50:28,051 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 02:50:28,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 02:50:28,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-30 02:50:28,053 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 10 states. [2018-01-30 02:50:28,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:28,173 INFO L93 Difference]: Finished difference Result 206 states and 216 transitions. [2018-01-30 02:50:28,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-30 02:50:28,173 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2018-01-30 02:50:28,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:28,174 INFO L225 Difference]: With dead ends: 206 [2018-01-30 02:50:28,174 INFO L226 Difference]: Without dead ends: 130 [2018-01-30 02:50:28,174 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-01-30 02:50:28,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-01-30 02:50:28,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2018-01-30 02:50:28,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-01-30 02:50:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 128 transitions. [2018-01-30 02:50:28,178 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 128 transitions. Word has length 106 [2018-01-30 02:50:28,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:28,178 INFO L432 AbstractCegarLoop]: Abstraction has 124 states and 128 transitions. [2018-01-30 02:50:28,178 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 02:50:28,178 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 128 transitions. [2018-01-30 02:50:28,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-01-30 02:50:28,179 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:28,179 INFO L350 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:28,179 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:28,179 INFO L82 PathProgramCache]: Analyzing trace with hash 962702581, now seen corresponding path program 8 times [2018-01-30 02:50:28,179 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:28,179 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:28,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:28,183 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:28,183 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:28,193 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-01-30 02:50:28,480 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:28,480 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 02:50:28,486 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:50:28,491 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:28,503 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:28,518 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:28,520 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-01-30 02:50:28,561 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:28,561 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-01-30 02:50:28,562 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-30 02:50:28,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-30 02:50:28,562 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-30 02:50:28,562 INFO L87 Difference]: Start difference. First operand 124 states and 128 transitions. Second operand 11 states. [2018-01-30 02:50:28,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:28,653 INFO L93 Difference]: Finished difference Result 226 states and 236 transitions. [2018-01-30 02:50:28,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-30 02:50:28,653 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 118 [2018-01-30 02:50:28,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:28,653 INFO L225 Difference]: With dead ends: 226 [2018-01-30 02:50:28,653 INFO L226 Difference]: Without dead ends: 142 [2018-01-30 02:50:28,654 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-30 02:50:28,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-01-30 02:50:28,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2018-01-30 02:50:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-01-30 02:50:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 140 transitions. [2018-01-30 02:50:28,657 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 140 transitions. Word has length 118 [2018-01-30 02:50:28,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:28,657 INFO L432 AbstractCegarLoop]: Abstraction has 136 states and 140 transitions. [2018-01-30 02:50:28,657 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-30 02:50:28,657 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 140 transitions. [2018-01-30 02:50:28,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-01-30 02:50:28,658 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:28,658 INFO L350 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:28,658 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:28,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1126481670, now seen corresponding path program 9 times [2018-01-30 02:50:28,659 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:28,659 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:28,659 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:28,659 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:28,659 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:28,669 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-01-30 02:50:28,951 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:28,952 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 02:50:28,956 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:50:28,961 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:28,962 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:28,964 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:28,965 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:28,967 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:28,969 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:28,971 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:28,974 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:28,977 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:28,981 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:28,981 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:28,983 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-01-30 02:50:29,014 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:29,015 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-01-30 02:50:29,015 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 02:50:29,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 02:50:29,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-30 02:50:29,015 INFO L87 Difference]: Start difference. First operand 136 states and 140 transitions. Second operand 12 states. [2018-01-30 02:50:29,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:29,157 INFO L93 Difference]: Finished difference Result 246 states and 256 transitions. [2018-01-30 02:50:29,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 02:50:29,157 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2018-01-30 02:50:29,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:29,157 INFO L225 Difference]: With dead ends: 246 [2018-01-30 02:50:29,158 INFO L226 Difference]: Without dead ends: 154 [2018-01-30 02:50:29,158 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-30 02:50:29,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-30 02:50:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 148. [2018-01-30 02:50:29,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-01-30 02:50:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 152 transitions. [2018-01-30 02:50:29,161 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 152 transitions. Word has length 130 [2018-01-30 02:50:29,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:29,161 INFO L432 AbstractCegarLoop]: Abstraction has 148 states and 152 transitions. [2018-01-30 02:50:29,161 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 02:50:29,161 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 152 transitions. [2018-01-30 02:50:29,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-01-30 02:50:29,162 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:29,162 INFO L350 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:29,162 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:29,163 INFO L82 PathProgramCache]: Analyzing trace with hash -88926849, now seen corresponding path program 10 times [2018-01-30 02:50:29,163 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:29,163 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:29,163 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:29,163 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:29,163 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:29,172 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-01-30 02:50:29,247 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:29,247 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 02:50:29,252 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:50:29,269 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:29,270 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-01-30 02:50:29,298 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:29,298 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-01-30 02:50:29,298 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 02:50:29,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 02:50:29,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-01-30 02:50:29,299 INFO L87 Difference]: Start difference. First operand 148 states and 152 transitions. Second operand 13 states. [2018-01-30 02:50:29,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:29,393 INFO L93 Difference]: Finished difference Result 266 states and 276 transitions. [2018-01-30 02:50:29,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 02:50:29,393 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 142 [2018-01-30 02:50:29,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:29,394 INFO L225 Difference]: With dead ends: 266 [2018-01-30 02:50:29,394 INFO L226 Difference]: Without dead ends: 166 [2018-01-30 02:50:29,394 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 143 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 02:50:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-30 02:50:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 160. [2018-01-30 02:50:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-01-30 02:50:29,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 164 transitions. [2018-01-30 02:50:29,397 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 164 transitions. Word has length 142 [2018-01-30 02:50:29,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:29,398 INFO L432 AbstractCegarLoop]: Abstraction has 160 states and 164 transitions. [2018-01-30 02:50:29,398 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 02:50:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 164 transitions. [2018-01-30 02:50:29,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-01-30 02:50:29,399 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:29,399 INFO L350 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:29,399 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1184033412, now seen corresponding path program 11 times [2018-01-30 02:50:29,399 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:29,399 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:29,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:29,400 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:29,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:29,408 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2018-01-30 02:50:29,529 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:29,529 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 02:50:29,534 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:50:29,538 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,547 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,558 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,560 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,561 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,563 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,565 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,568 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,570 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,573 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,577 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,597 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:29,598 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:29,599 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2018-01-30 02:50:29,642 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:29,642 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-01-30 02:50:29,642 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 02:50:29,643 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 02:50:29,643 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-30 02:50:29,643 INFO L87 Difference]: Start difference. First operand 160 states and 164 transitions. Second operand 14 states. [2018-01-30 02:50:29,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:29,846 INFO L93 Difference]: Finished difference Result 286 states and 296 transitions. [2018-01-30 02:50:29,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-30 02:50:29,847 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 154 [2018-01-30 02:50:29,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:29,848 INFO L225 Difference]: With dead ends: 286 [2018-01-30 02:50:29,848 INFO L226 Difference]: Without dead ends: 178 [2018-01-30 02:50:29,848 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-30 02:50:29,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-30 02:50:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 172. [2018-01-30 02:50:29,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-01-30 02:50:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 176 transitions. [2018-01-30 02:50:29,851 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 176 transitions. Word has length 154 [2018-01-30 02:50:29,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:29,857 INFO L432 AbstractCegarLoop]: Abstraction has 172 states and 176 transitions. [2018-01-30 02:50:29,857 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 02:50:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 176 transitions. [2018-01-30 02:50:29,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-01-30 02:50:29,858 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:29,858 INFO L350 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:29,858 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:29,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1648066551, now seen corresponding path program 12 times [2018-01-30 02:50:29,858 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:29,858 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:29,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:29,859 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:29,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:29,868 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2018-01-30 02:50:30,028 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:30,028 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 02:50:30,033 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:50:30,038 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,039 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,040 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,042 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,043 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,068 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,070 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,074 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,076 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,079 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,081 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,084 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,090 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:30,091 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:30,092 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2018-01-30 02:50:30,123 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:30,123 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-01-30 02:50:30,124 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 02:50:30,124 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 02:50:30,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-30 02:50:30,124 INFO L87 Difference]: Start difference. First operand 172 states and 176 transitions. Second operand 15 states. [2018-01-30 02:50:30,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:30,383 INFO L93 Difference]: Finished difference Result 306 states and 316 transitions. [2018-01-30 02:50:30,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 02:50:30,384 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 166 [2018-01-30 02:50:30,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:30,384 INFO L225 Difference]: With dead ends: 306 [2018-01-30 02:50:30,384 INFO L226 Difference]: Without dead ends: 190 [2018-01-30 02:50:30,385 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 167 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 02:50:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-30 02:50:30,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 184. [2018-01-30 02:50:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-01-30 02:50:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 188 transitions. [2018-01-30 02:50:30,388 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 188 transitions. Word has length 166 [2018-01-30 02:50:30,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:30,388 INFO L432 AbstractCegarLoop]: Abstraction has 184 states and 188 transitions. [2018-01-30 02:50:30,388 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 02:50:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 188 transitions. [2018-01-30 02:50:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-01-30 02:50:30,391 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:30,391 INFO L350 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:30,391 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:30,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1758358002, now seen corresponding path program 13 times [2018-01-30 02:50:30,392 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:30,392 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:30,392 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:30,392 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:30,392 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:30,400 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2018-01-30 02:50:30,568 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:30,568 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 02:50:30,573 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:30,597 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2018-01-30 02:50:30,628 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:30,628 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-01-30 02:50:30,628 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-30 02:50:30,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-30 02:50:30,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-01-30 02:50:30,628 INFO L87 Difference]: Start difference. First operand 184 states and 188 transitions. Second operand 16 states. [2018-01-30 02:50:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:30,772 INFO L93 Difference]: Finished difference Result 326 states and 336 transitions. [2018-01-30 02:50:30,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-30 02:50:30,772 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2018-01-30 02:50:30,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:30,773 INFO L225 Difference]: With dead ends: 326 [2018-01-30 02:50:30,773 INFO L226 Difference]: Without dead ends: 202 [2018-01-30 02:50:30,774 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 179 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 02:50:30,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-01-30 02:50:30,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2018-01-30 02:50:30,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-01-30 02:50:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 200 transitions. [2018-01-30 02:50:30,781 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 200 transitions. Word has length 178 [2018-01-30 02:50:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:30,781 INFO L432 AbstractCegarLoop]: Abstraction has 196 states and 200 transitions. [2018-01-30 02:50:30,781 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-30 02:50:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 200 transitions. [2018-01-30 02:50:30,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-01-30 02:50:30,783 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:30,783 INFO L350 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:30,783 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:30,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1399057555, now seen corresponding path program 14 times [2018-01-30 02:50:30,783 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:30,783 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:30,784 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:30,784 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:30,784 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:30,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:30,792 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2018-01-30 02:50:31,016 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:31,016 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 02:50:31,022 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:50:31,027 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:31,039 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:31,052 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:31,053 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2018-01-30 02:50:31,086 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:31,086 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-01-30 02:50:31,086 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 02:50:31,086 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 02:50:31,087 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:50:31,087 INFO L87 Difference]: Start difference. First operand 196 states and 200 transitions. Second operand 17 states. [2018-01-30 02:50:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:31,270 INFO L93 Difference]: Finished difference Result 346 states and 356 transitions. [2018-01-30 02:50:31,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-30 02:50:31,271 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 190 [2018-01-30 02:50:31,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:31,271 INFO L225 Difference]: With dead ends: 346 [2018-01-30 02:50:31,271 INFO L226 Difference]: Without dead ends: 214 [2018-01-30 02:50:31,272 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:50:31,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-01-30 02:50:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 208. [2018-01-30 02:50:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-01-30 02:50:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 212 transitions. [2018-01-30 02:50:31,274 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 212 transitions. Word has length 190 [2018-01-30 02:50:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:31,274 INFO L432 AbstractCegarLoop]: Abstraction has 208 states and 212 transitions. [2018-01-30 02:50:31,274 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 02:50:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 212 transitions. [2018-01-30 02:50:31,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-01-30 02:50:31,276 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:31,276 INFO L350 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:31,276 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:31,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1820672920, now seen corresponding path program 15 times [2018-01-30 02:50:31,277 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:31,277 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:31,277 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:31,277 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:31,277 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:31,287 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2018-01-30 02:50:31,748 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:31,748 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 02:50:31,753 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:50:31,759 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,761 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,763 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,776 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,789 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,791 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,793 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,796 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,799 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,802 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,806 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,811 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,815 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,821 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,826 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,833 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:31,834 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:31,836 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2018-01-30 02:50:31,871 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:31,871 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-01-30 02:50:31,871 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 02:50:31,871 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 02:50:31,871 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-30 02:50:31,872 INFO L87 Difference]: Start difference. First operand 208 states and 212 transitions. Second operand 18 states. [2018-01-30 02:50:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:32,410 INFO L93 Difference]: Finished difference Result 366 states and 376 transitions. [2018-01-30 02:50:32,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 02:50:32,410 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 202 [2018-01-30 02:50:32,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:32,411 INFO L225 Difference]: With dead ends: 366 [2018-01-30 02:50:32,411 INFO L226 Difference]: Without dead ends: 226 [2018-01-30 02:50:32,411 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-30 02:50:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-30 02:50:32,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 220. [2018-01-30 02:50:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-01-30 02:50:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 224 transitions. [2018-01-30 02:50:32,416 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 224 transitions. Word has length 202 [2018-01-30 02:50:32,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:32,417 INFO L432 AbstractCegarLoop]: Abstraction has 220 states and 224 transitions. [2018-01-30 02:50:32,417 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 02:50:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 224 transitions. [2018-01-30 02:50:32,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-30 02:50:32,417 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:32,417 INFO L350 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:32,417 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:32,418 INFO L82 PathProgramCache]: Analyzing trace with hash -429958371, now seen corresponding path program 16 times [2018-01-30 02:50:32,418 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:32,418 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:32,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:32,419 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:32,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:32,427 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2018-01-30 02:50:32,857 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:32,857 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 02:50:32,865 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:50:32,884 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:32,886 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2018-01-30 02:50:32,930 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:32,930 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-01-30 02:50:32,930 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 02:50:32,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 02:50:32,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-01-30 02:50:32,931 INFO L87 Difference]: Start difference. First operand 220 states and 224 transitions. Second operand 19 states. [2018-01-30 02:50:33,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:33,074 INFO L93 Difference]: Finished difference Result 386 states and 396 transitions. [2018-01-30 02:50:33,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 02:50:33,075 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 214 [2018-01-30 02:50:33,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:33,075 INFO L225 Difference]: With dead ends: 386 [2018-01-30 02:50:33,076 INFO L226 Difference]: Without dead ends: 238 [2018-01-30 02:50:33,076 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-01-30 02:50:33,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-01-30 02:50:33,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 232. [2018-01-30 02:50:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-01-30 02:50:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 236 transitions. [2018-01-30 02:50:33,079 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 236 transitions. Word has length 214 [2018-01-30 02:50:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:33,080 INFO L432 AbstractCegarLoop]: Abstraction has 232 states and 236 transitions. [2018-01-30 02:50:33,080 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 02:50:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 236 transitions. [2018-01-30 02:50:33,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-01-30 02:50:33,080 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:33,081 INFO L350 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:33,081 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:33,081 INFO L82 PathProgramCache]: Analyzing trace with hash 509342498, now seen corresponding path program 17 times [2018-01-30 02:50:33,081 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:33,081 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:33,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:33,081 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:33,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:33,089 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2018-01-30 02:50:33,399 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:33,399 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 02:50:33,403 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:50:33,408 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,410 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,411 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,412 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,414 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,416 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,418 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,420 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,423 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,426 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,429 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,434 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,438 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,443 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,449 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,456 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,463 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,853 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:33,855 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:33,857 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1734 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2018-01-30 02:50:33,896 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:33,896 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-01-30 02:50:33,896 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 02:50:33,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 02:50:33,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-01-30 02:50:33,897 INFO L87 Difference]: Start difference. First operand 232 states and 236 transitions. Second operand 20 states. [2018-01-30 02:50:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:34,138 INFO L93 Difference]: Finished difference Result 406 states and 416 transitions. [2018-01-30 02:50:34,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-30 02:50:34,139 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 226 [2018-01-30 02:50:34,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:34,140 INFO L225 Difference]: With dead ends: 406 [2018-01-30 02:50:34,140 INFO L226 Difference]: Without dead ends: 250 [2018-01-30 02:50:34,141 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-01-30 02:50:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-01-30 02:50:34,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2018-01-30 02:50:34,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-01-30 02:50:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2018-01-30 02:50:34,144 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 226 [2018-01-30 02:50:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:34,145 INFO L432 AbstractCegarLoop]: Abstraction has 244 states and 248 transitions. [2018-01-30 02:50:34,145 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 02:50:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 248 transitions. [2018-01-30 02:50:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-01-30 02:50:34,145 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:34,145 INFO L350 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:34,145 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:34,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1148925017, now seen corresponding path program 18 times [2018-01-30 02:50:34,146 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:34,146 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:34,146 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:34,146 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:34,146 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:34,154 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2018-01-30 02:50:34,351 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:34,351 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 02:50:34,357 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:50:34,363 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,364 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,365 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,367 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,368 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,369 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,371 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,373 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,374 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,377 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,380 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,383 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,386 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,392 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,397 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,400 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,503 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,522 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,530 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:34,531 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:34,533 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 1296 trivial. 0 not checked. [2018-01-30 02:50:34,573 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:34,573 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-01-30 02:50:34,574 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 02:50:34,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 02:50:34,574 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-01-30 02:50:34,574 INFO L87 Difference]: Start difference. First operand 244 states and 248 transitions. Second operand 21 states. [2018-01-30 02:50:34,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:34,723 INFO L93 Difference]: Finished difference Result 426 states and 436 transitions. [2018-01-30 02:50:34,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 02:50:34,725 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 238 [2018-01-30 02:50:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:34,725 INFO L225 Difference]: With dead ends: 426 [2018-01-30 02:50:34,725 INFO L226 Difference]: Without dead ends: 262 [2018-01-30 02:50:34,726 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-01-30 02:50:34,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-01-30 02:50:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2018-01-30 02:50:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-01-30 02:50:34,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 260 transitions. [2018-01-30 02:50:34,731 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 260 transitions. Word has length 238 [2018-01-30 02:50:34,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:34,732 INFO L432 AbstractCegarLoop]: Abstraction has 256 states and 260 transitions. [2018-01-30 02:50:34,732 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 02:50:34,732 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 260 transitions. [2018-01-30 02:50:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-01-30 02:50:34,732 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:34,732 INFO L350 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:34,732 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:34,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1635539796, now seen corresponding path program 19 times [2018-01-30 02:50:34,733 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:34,733 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:34,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:34,733 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:34,733 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:34,742 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2166 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 1444 trivial. 0 not checked. [2018-01-30 02:50:35,245 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:35,245 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 02:50:35,250 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:35,287 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:35,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2166 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 1444 trivial. 0 not checked. [2018-01-30 02:50:35,333 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:35,333 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-01-30 02:50:35,333 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-30 02:50:35,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-30 02:50:35,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-01-30 02:50:35,334 INFO L87 Difference]: Start difference. First operand 256 states and 260 transitions. Second operand 22 states. [2018-01-30 02:50:35,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:35,512 INFO L93 Difference]: Finished difference Result 446 states and 456 transitions. [2018-01-30 02:50:35,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-30 02:50:35,512 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 250 [2018-01-30 02:50:35,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:35,513 INFO L225 Difference]: With dead ends: 446 [2018-01-30 02:50:35,513 INFO L226 Difference]: Without dead ends: 274 [2018-01-30 02:50:35,513 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-01-30 02:50:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-01-30 02:50:35,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 268. [2018-01-30 02:50:35,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-01-30 02:50:35,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 272 transitions. [2018-01-30 02:50:35,516 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 272 transitions. Word has length 250 [2018-01-30 02:50:35,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:35,516 INFO L432 AbstractCegarLoop]: Abstraction has 268 states and 272 transitions. [2018-01-30 02:50:35,516 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-30 02:50:35,517 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 272 transitions. [2018-01-30 02:50:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-01-30 02:50:35,517 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:35,517 INFO L350 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:35,517 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:35,518 INFO L82 PathProgramCache]: Analyzing trace with hash -777896399, now seen corresponding path program 20 times [2018-01-30 02:50:35,518 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:35,518 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:35,518 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:35,518 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:35,518 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:35,526 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2400 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 1600 trivial. 0 not checked. [2018-01-30 02:50:35,811 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:35,811 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 02:50:35,816 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:50:35,822 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:35,847 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:35,858 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:35,860 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2400 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 1600 trivial. 0 not checked. [2018-01-30 02:50:35,905 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:35,905 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-01-30 02:50:35,905 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 02:50:35,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 02:50:35,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-01-30 02:50:35,906 INFO L87 Difference]: Start difference. First operand 268 states and 272 transitions. Second operand 23 states. [2018-01-30 02:50:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:36,495 INFO L93 Difference]: Finished difference Result 466 states and 476 transitions. [2018-01-30 02:50:36,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-30 02:50:36,496 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 262 [2018-01-30 02:50:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:36,497 INFO L225 Difference]: With dead ends: 466 [2018-01-30 02:50:36,497 INFO L226 Difference]: Without dead ends: 286 [2018-01-30 02:50:36,497 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-01-30 02:50:36,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2018-01-30 02:50:36,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2018-01-30 02:50:36,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-01-30 02:50:36,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 284 transitions. [2018-01-30 02:50:36,500 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 284 transitions. Word has length 262 [2018-01-30 02:50:36,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:36,500 INFO L432 AbstractCegarLoop]: Abstraction has 280 states and 284 transitions. [2018-01-30 02:50:36,500 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 02:50:36,500 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 284 transitions. [2018-01-30 02:50:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-01-30 02:50:36,501 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:36,501 INFO L350 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:36,501 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:36,501 INFO L82 PathProgramCache]: Analyzing trace with hash 2026526774, now seen corresponding path program 21 times [2018-01-30 02:50:36,501 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:36,502 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:36,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:36,502 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:36,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:36,510 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2018-01-30 02:50:37,090 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:37,090 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 02:50:37,095 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:50:37,101 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,104 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,106 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,107 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,108 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,111 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,114 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,116 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,120 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,123 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,126 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,130 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,135 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,140 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,146 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,153 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,160 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,168 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,178 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,190 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,201 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,213 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:37,213 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:37,216 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 1764 trivial. 0 not checked. [2018-01-30 02:50:37,268 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:37,268 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-01-30 02:50:37,269 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-30 02:50:37,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-30 02:50:37,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-01-30 02:50:37,269 INFO L87 Difference]: Start difference. First operand 280 states and 284 transitions. Second operand 24 states. [2018-01-30 02:50:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:37,451 INFO L93 Difference]: Finished difference Result 486 states and 496 transitions. [2018-01-30 02:50:37,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 02:50:37,451 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 274 [2018-01-30 02:50:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:37,452 INFO L225 Difference]: With dead ends: 486 [2018-01-30 02:50:37,452 INFO L226 Difference]: Without dead ends: 298 [2018-01-30 02:50:37,452 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-01-30 02:50:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-01-30 02:50:37,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 292. [2018-01-30 02:50:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-01-30 02:50:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 296 transitions. [2018-01-30 02:50:37,455 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 296 transitions. Word has length 274 [2018-01-30 02:50:37,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:37,455 INFO L432 AbstractCegarLoop]: Abstraction has 292 states and 296 transitions. [2018-01-30 02:50:37,455 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-30 02:50:37,455 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 296 transitions. [2018-01-30 02:50:37,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-01-30 02:50:37,456 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:37,456 INFO L350 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:37,456 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:37,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1048202565, now seen corresponding path program 22 times [2018-01-30 02:50:37,456 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:37,457 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:37,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:37,457 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:37,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:37,465 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:37,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-01-30 02:50:37,768 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:37,768 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 02:50:37,772 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:50:37,795 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:37,797 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 1936 trivial. 0 not checked. [2018-01-30 02:50:37,843 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:37,843 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-01-30 02:50:37,843 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 02:50:37,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 02:50:37,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-01-30 02:50:37,844 INFO L87 Difference]: Start difference. First operand 292 states and 296 transitions. Second operand 25 states. [2018-01-30 02:50:38,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:38,592 INFO L93 Difference]: Finished difference Result 506 states and 516 transitions. [2018-01-30 02:50:38,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-30 02:50:38,592 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 286 [2018-01-30 02:50:38,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:38,593 INFO L225 Difference]: With dead ends: 506 [2018-01-30 02:50:38,593 INFO L226 Difference]: Without dead ends: 310 [2018-01-30 02:50:38,594 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-01-30 02:50:38,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-01-30 02:50:38,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 304. [2018-01-30 02:50:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-01-30 02:50:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 308 transitions. [2018-01-30 02:50:38,597 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 308 transitions. Word has length 286 [2018-01-30 02:50:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:38,597 INFO L432 AbstractCegarLoop]: Abstraction has 304 states and 308 transitions. [2018-01-30 02:50:38,597 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 02:50:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 308 transitions. [2018-01-30 02:50:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-01-30 02:50:38,598 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:38,598 INFO L350 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:38,598 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:38,598 INFO L82 PathProgramCache]: Analyzing trace with hash -755102272, now seen corresponding path program 23 times [2018-01-30 02:50:38,598 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:38,598 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:38,599 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:38,599 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:38,599 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:38,607 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3174 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2018-01-30 02:50:39,056 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:39,056 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 02:50:39,060 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:50:39,069 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,070 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,072 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,073 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,075 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,085 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,096 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,103 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,114 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,117 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,120 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,124 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,129 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,134 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,140 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,147 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,154 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,163 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,172 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,183 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,195 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,209 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,225 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,359 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:39,361 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:39,364 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3174 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2018-01-30 02:50:39,418 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:39,418 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-01-30 02:50:39,418 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-30 02:50:39,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-30 02:50:39,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-01-30 02:50:39,422 INFO L87 Difference]: Start difference. First operand 304 states and 308 transitions. Second operand 26 states. [2018-01-30 02:50:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:39,585 INFO L93 Difference]: Finished difference Result 526 states and 536 transitions. [2018-01-30 02:50:39,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-30 02:50:39,585 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 298 [2018-01-30 02:50:39,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:39,586 INFO L225 Difference]: With dead ends: 526 [2018-01-30 02:50:39,586 INFO L226 Difference]: Without dead ends: 322 [2018-01-30 02:50:39,586 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-01-30 02:50:39,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-01-30 02:50:39,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 316. [2018-01-30 02:50:39,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-01-30 02:50:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 320 transitions. [2018-01-30 02:50:39,589 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 320 transitions. Word has length 298 [2018-01-30 02:50:39,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:39,590 INFO L432 AbstractCegarLoop]: Abstraction has 316 states and 320 transitions. [2018-01-30 02:50:39,590 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-30 02:50:39,590 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 320 transitions. [2018-01-30 02:50:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-01-30 02:50:39,590 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:39,591 INFO L350 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:39,591 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:39,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1107482299, now seen corresponding path program 24 times [2018-01-30 02:50:39,591 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:39,591 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:39,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:39,591 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:39,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:39,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:39,599 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3456 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2018-01-30 02:50:40,257 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:40,257 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 02:50:40,262 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:50:40,268 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,270 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,271 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,272 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,273 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,275 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,276 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,278 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,280 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,282 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,286 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,288 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,291 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,295 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,299 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,303 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,307 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,311 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,317 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,322 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,328 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,335 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,342 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,539 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,613 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:40,614 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:40,617 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:40,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3456 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2018-01-30 02:50:40,668 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:40,668 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-01-30 02:50:40,669 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 02:50:40,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 02:50:40,669 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-01-30 02:50:40,669 INFO L87 Difference]: Start difference. First operand 316 states and 320 transitions. Second operand 27 states. [2018-01-30 02:50:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:40,843 INFO L93 Difference]: Finished difference Result 546 states and 556 transitions. [2018-01-30 02:50:40,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 02:50:40,843 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 310 [2018-01-30 02:50:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:40,844 INFO L225 Difference]: With dead ends: 546 [2018-01-30 02:50:40,844 INFO L226 Difference]: Without dead ends: 334 [2018-01-30 02:50:40,845 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-01-30 02:50:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-01-30 02:50:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 328. [2018-01-30 02:50:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-01-30 02:50:40,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 332 transitions. [2018-01-30 02:50:40,848 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 332 transitions. Word has length 310 [2018-01-30 02:50:40,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:40,848 INFO L432 AbstractCegarLoop]: Abstraction has 328 states and 332 transitions. [2018-01-30 02:50:40,848 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 02:50:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 332 transitions. [2018-01-30 02:50:40,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-01-30 02:50:40,849 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:40,849 INFO L350 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:40,849 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:40,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1827456330, now seen corresponding path program 25 times [2018-01-30 02:50:40,849 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:40,849 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:40,850 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:40,850 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:40,850 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:40,858 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3750 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2018-01-30 02:50:42,035 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:42,035 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 02:50:42,039 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:42,065 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3750 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 2500 trivial. 0 not checked. [2018-01-30 02:50:42,118 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:42,119 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-01-30 02:50:42,119 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-30 02:50:42,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-30 02:50:42,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-01-30 02:50:42,119 INFO L87 Difference]: Start difference. First operand 328 states and 332 transitions. Second operand 28 states. [2018-01-30 02:50:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:42,473 INFO L93 Difference]: Finished difference Result 566 states and 576 transitions. [2018-01-30 02:50:42,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 02:50:42,473 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 322 [2018-01-30 02:50:42,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:42,474 INFO L225 Difference]: With dead ends: 566 [2018-01-30 02:50:42,474 INFO L226 Difference]: Without dead ends: 346 [2018-01-30 02:50:42,474 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-01-30 02:50:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-01-30 02:50:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 340. [2018-01-30 02:50:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-01-30 02:50:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 344 transitions. [2018-01-30 02:50:42,477 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 344 transitions. Word has length 322 [2018-01-30 02:50:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:42,477 INFO L432 AbstractCegarLoop]: Abstraction has 340 states and 344 transitions. [2018-01-30 02:50:42,477 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-30 02:50:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 344 transitions. [2018-01-30 02:50:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-01-30 02:50:42,478 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:42,478 INFO L350 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:42,478 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:42,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1814650417, now seen corresponding path program 26 times [2018-01-30 02:50:42,479 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:42,479 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:42,479 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:42,479 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:42,479 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:42,487 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4056 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 2704 trivial. 0 not checked. [2018-01-30 02:50:43,248 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:43,249 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 02:50:43,254 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:50:43,260 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:43,276 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:43,279 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:43,281 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4056 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 2704 trivial. 0 not checked. [2018-01-30 02:50:43,341 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:43,342 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-01-30 02:50:43,342 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-30 02:50:43,342 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-30 02:50:43,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-01-30 02:50:43,342 INFO L87 Difference]: Start difference. First operand 340 states and 344 transitions. Second operand 29 states. [2018-01-30 02:50:43,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:43,565 INFO L93 Difference]: Finished difference Result 586 states and 596 transitions. [2018-01-30 02:50:43,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-30 02:50:43,565 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 334 [2018-01-30 02:50:43,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:43,566 INFO L225 Difference]: With dead ends: 586 [2018-01-30 02:50:43,566 INFO L226 Difference]: Without dead ends: 358 [2018-01-30 02:50:43,567 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-01-30 02:50:43,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-01-30 02:50:43,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 352. [2018-01-30 02:50:43,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2018-01-30 02:50:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 356 transitions. [2018-01-30 02:50:43,573 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 356 transitions. Word has length 334 [2018-01-30 02:50:43,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:43,573 INFO L432 AbstractCegarLoop]: Abstraction has 352 states and 356 transitions. [2018-01-30 02:50:43,573 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-30 02:50:43,574 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 356 transitions. [2018-01-30 02:50:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-01-30 02:50:43,574 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:43,575 INFO L350 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:43,575 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:43,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1604026668, now seen corresponding path program 27 times [2018-01-30 02:50:43,575 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:43,575 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:43,575 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:43,575 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:43,575 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:43,584 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4374 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 2916 trivial. 0 not checked. [2018-01-30 02:50:44,016 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:44,016 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 02:50:44,021 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:50:44,041 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,042 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,044 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,045 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,046 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,048 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,050 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,053 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,056 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,059 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,063 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,067 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,072 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,077 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,083 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,089 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,097 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,105 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,115 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,127 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,137 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,149 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,163 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,182 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,201 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,220 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,241 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,268 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:44,269 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:44,273 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4374 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 2916 trivial. 0 not checked. [2018-01-30 02:50:44,342 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:44,342 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-01-30 02:50:44,343 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-30 02:50:44,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-30 02:50:44,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-01-30 02:50:44,343 INFO L87 Difference]: Start difference. First operand 352 states and 356 transitions. Second operand 30 states. [2018-01-30 02:50:45,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:45,004 INFO L93 Difference]: Finished difference Result 606 states and 616 transitions. [2018-01-30 02:50:45,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 02:50:45,005 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 346 [2018-01-30 02:50:45,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:45,006 INFO L225 Difference]: With dead ends: 606 [2018-01-30 02:50:45,006 INFO L226 Difference]: Without dead ends: 370 [2018-01-30 02:50:45,007 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-01-30 02:50:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2018-01-30 02:50:45,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 364. [2018-01-30 02:50:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-01-30 02:50:45,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 368 transitions. [2018-01-30 02:50:45,011 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 368 transitions. Word has length 346 [2018-01-30 02:50:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:45,011 INFO L432 AbstractCegarLoop]: Abstraction has 364 states and 368 transitions. [2018-01-30 02:50:45,011 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-30 02:50:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 368 transitions. [2018-01-30 02:50:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-01-30 02:50:45,013 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:45,013 INFO L350 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:45,013 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:45,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1444930471, now seen corresponding path program 28 times [2018-01-30 02:50:45,013 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:45,013 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:45,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:45,014 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:45,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:45,022 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 3136 trivial. 0 not checked. [2018-01-30 02:50:45,560 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:45,560 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 02:50:45,565 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:50:45,598 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:45,601 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 3136 trivial. 0 not checked. [2018-01-30 02:50:45,662 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:45,662 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-01-30 02:50:45,662 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 02:50:45,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 02:50:45,663 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:50:45,663 INFO L87 Difference]: Start difference. First operand 364 states and 368 transitions. Second operand 31 states. [2018-01-30 02:50:45,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:45,869 INFO L93 Difference]: Finished difference Result 626 states and 636 transitions. [2018-01-30 02:50:45,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 02:50:45,869 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 358 [2018-01-30 02:50:45,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:45,870 INFO L225 Difference]: With dead ends: 626 [2018-01-30 02:50:45,870 INFO L226 Difference]: Without dead ends: 382 [2018-01-30 02:50:45,871 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:50:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-01-30 02:50:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 376. [2018-01-30 02:50:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2018-01-30 02:50:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 380 transitions. [2018-01-30 02:50:45,874 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 380 transitions. Word has length 358 [2018-01-30 02:50:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:45,875 INFO L432 AbstractCegarLoop]: Abstraction has 376 states and 380 transitions. [2018-01-30 02:50:45,875 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 02:50:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 380 transitions. [2018-01-30 02:50:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-01-30 02:50:45,879 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:45,879 INFO L350 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:45,879 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:45,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1630747230, now seen corresponding path program 29 times [2018-01-30 02:50:45,879 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:45,880 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:45,880 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:45,880 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:45,880 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:45,889 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5046 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 3364 trivial. 0 not checked. [2018-01-30 02:50:46,354 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:46,354 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 02:50:46,371 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:50:46,378 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,389 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,399 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,409 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,410 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,412 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,414 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,416 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,419 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,422 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,425 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,430 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,434 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,439 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,446 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,453 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,460 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,469 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,478 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,489 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,501 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,516 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,532 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,550 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,569 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,591 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,616 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,644 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:46,675 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:47,580 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:47,584 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:47,588 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5046 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 3364 trivial. 0 not checked. [2018-01-30 02:50:47,657 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:47,658 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-01-30 02:50:47,658 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-30 02:50:47,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-30 02:50:47,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-30 02:50:47,658 INFO L87 Difference]: Start difference. First operand 376 states and 380 transitions. Second operand 32 states. [2018-01-30 02:50:47,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:47,900 INFO L93 Difference]: Finished difference Result 646 states and 656 transitions. [2018-01-30 02:50:47,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-30 02:50:47,901 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 370 [2018-01-30 02:50:47,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:47,901 INFO L225 Difference]: With dead ends: 646 [2018-01-30 02:50:47,901 INFO L226 Difference]: Without dead ends: 394 [2018-01-30 02:50:47,902 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-30 02:50:47,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2018-01-30 02:50:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 388. [2018-01-30 02:50:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-01-30 02:50:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 392 transitions. [2018-01-30 02:50:47,905 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 392 transitions. Word has length 370 [2018-01-30 02:50:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:47,905 INFO L432 AbstractCegarLoop]: Abstraction has 388 states and 392 transitions. [2018-01-30 02:50:47,905 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-30 02:50:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 392 transitions. [2018-01-30 02:50:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-01-30 02:50:47,906 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:47,907 INFO L350 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:47,907 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:47,907 INFO L82 PathProgramCache]: Analyzing trace with hash 15177955, now seen corresponding path program 30 times [2018-01-30 02:50:47,907 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:47,907 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:47,907 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:47,907 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:47,907 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:47,915 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5400 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 3600 trivial. 0 not checked. [2018-01-30 02:50:48,608 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:48,608 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 02:50:48,626 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:50:48,634 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,641 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,650 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,660 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,663 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,665 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,667 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,668 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,670 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,672 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,675 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,678 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,681 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,685 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,690 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,693 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,697 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,701 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,706 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,712 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,719 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,725 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,732 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,739 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,746 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,754 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,764 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,780 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,793 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,807 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,850 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:48,862 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:48,865 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5400 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 3600 trivial. 0 not checked. [2018-01-30 02:50:48,937 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:48,937 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-01-30 02:50:48,937 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-30 02:50:48,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-30 02:50:48,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 02:50:48,938 INFO L87 Difference]: Start difference. First operand 388 states and 392 transitions. Second operand 33 states. [2018-01-30 02:50:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:49,382 INFO L93 Difference]: Finished difference Result 666 states and 676 transitions. [2018-01-30 02:50:49,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 02:50:49,382 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 382 [2018-01-30 02:50:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:49,383 INFO L225 Difference]: With dead ends: 666 [2018-01-30 02:50:49,383 INFO L226 Difference]: Without dead ends: 406 [2018-01-30 02:50:49,384 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-01-30 02:50:49,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2018-01-30 02:50:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 400. [2018-01-30 02:50:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-01-30 02:50:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 404 transitions. [2018-01-30 02:50:49,387 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 404 transitions. Word has length 382 [2018-01-30 02:50:49,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:49,387 INFO L432 AbstractCegarLoop]: Abstraction has 400 states and 404 transitions. [2018-01-30 02:50:49,387 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-30 02:50:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 404 transitions. [2018-01-30 02:50:49,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-01-30 02:50:49,389 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:49,389 INFO L350 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:49,389 INFO L371 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:49,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1025964008, now seen corresponding path program 31 times [2018-01-30 02:50:49,389 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:49,389 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:49,389 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:49,390 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:49,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:49,398 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5766 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 3844 trivial. 0 not checked. [2018-01-30 02:50:50,026 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:50,026 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 02:50:50,031 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:50,061 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5766 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 3844 trivial. 0 not checked. [2018-01-30 02:50:50,126 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:50,126 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-01-30 02:50:50,126 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-30 02:50:50,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-30 02:50:50,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 02:50:50,127 INFO L87 Difference]: Start difference. First operand 400 states and 404 transitions. Second operand 34 states. [2018-01-30 02:50:50,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:50,389 INFO L93 Difference]: Finished difference Result 686 states and 696 transitions. [2018-01-30 02:50:50,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-30 02:50:50,389 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 394 [2018-01-30 02:50:50,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:50,390 INFO L225 Difference]: With dead ends: 686 [2018-01-30 02:50:50,390 INFO L226 Difference]: Without dead ends: 418 [2018-01-30 02:50:50,391 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 02:50:50,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2018-01-30 02:50:50,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 412. [2018-01-30 02:50:50,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-01-30 02:50:50,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 416 transitions. [2018-01-30 02:50:50,406 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 416 transitions. Word has length 394 [2018-01-30 02:50:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:50,406 INFO L432 AbstractCegarLoop]: Abstraction has 412 states and 416 transitions. [2018-01-30 02:50:50,406 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-30 02:50:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 416 transitions. [2018-01-30 02:50:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-01-30 02:50:50,407 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:50,407 INFO L350 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:50,407 INFO L371 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash 867899245, now seen corresponding path program 32 times [2018-01-30 02:50:50,408 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:50,408 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:50,408 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:50,408 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:50,408 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:50,416 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:50,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6144 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 4096 trivial. 0 not checked. [2018-01-30 02:50:50,976 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:50,976 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 02:50:50,980 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:50:50,992 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:51,009 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:51,013 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:51,015 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6144 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 4096 trivial. 0 not checked. [2018-01-30 02:50:51,091 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:51,092 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-01-30 02:50:51,092 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-30 02:50:51,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-30 02:50:51,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 02:50:51,092 INFO L87 Difference]: Start difference. First operand 412 states and 416 transitions. Second operand 35 states. [2018-01-30 02:50:51,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:51,379 INFO L93 Difference]: Finished difference Result 706 states and 716 transitions. [2018-01-30 02:50:51,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-30 02:50:51,379 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 406 [2018-01-30 02:50:51,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:51,380 INFO L225 Difference]: With dead ends: 706 [2018-01-30 02:50:51,380 INFO L226 Difference]: Without dead ends: 430 [2018-01-30 02:50:51,381 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 02:50:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-01-30 02:50:51,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 424. [2018-01-30 02:50:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2018-01-30 02:50:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 428 transitions. [2018-01-30 02:50:51,384 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 428 transitions. Word has length 406 [2018-01-30 02:50:51,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:51,384 INFO L432 AbstractCegarLoop]: Abstraction has 424 states and 428 transitions. [2018-01-30 02:50:51,384 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-30 02:50:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 428 transitions. [2018-01-30 02:50:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-01-30 02:50:51,386 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:51,386 INFO L350 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:51,386 INFO L371 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:51,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1544402802, now seen corresponding path program 33 times [2018-01-30 02:50:51,386 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:51,386 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:51,386 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:51,386 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:51,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:51,402 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6534 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 4356 trivial. 0 not checked. [2018-01-30 02:50:52,145 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:52,145 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 02:50:52,149 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:50:52,157 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,158 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,159 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,161 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,162 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,164 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,166 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,168 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,172 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,175 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,178 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,182 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,187 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,192 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,198 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,205 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,213 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,221 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,234 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,244 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,256 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,268 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,282 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,300 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,318 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,338 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,359 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,385 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,411 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,440 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,474 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,509 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,552 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,593 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:50:52,596 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:52,600 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6534 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 4356 trivial. 0 not checked. [2018-01-30 02:50:52,679 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:52,679 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-01-30 02:50:52,680 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 02:50:52,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 02:50:52,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 02:50:52,680 INFO L87 Difference]: Start difference. First operand 424 states and 428 transitions. Second operand 36 states. [2018-01-30 02:50:52,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:52,924 INFO L93 Difference]: Finished difference Result 726 states and 736 transitions. [2018-01-30 02:50:52,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-30 02:50:52,924 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 418 [2018-01-30 02:50:52,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:52,925 INFO L225 Difference]: With dead ends: 726 [2018-01-30 02:50:52,925 INFO L226 Difference]: Without dead ends: 442 [2018-01-30 02:50:52,926 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 02:50:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2018-01-30 02:50:52,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 436. [2018-01-30 02:50:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2018-01-30 02:50:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 440 transitions. [2018-01-30 02:50:52,929 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 440 transitions. Word has length 418 [2018-01-30 02:50:52,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:52,929 INFO L432 AbstractCegarLoop]: Abstraction has 436 states and 440 transitions. [2018-01-30 02:50:52,929 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 02:50:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 440 transitions. [2018-01-30 02:50:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-01-30 02:50:52,930 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:52,931 INFO L350 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:52,931 INFO L371 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:52,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1999149047, now seen corresponding path program 34 times [2018-01-30 02:50:52,931 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:52,931 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:52,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:52,931 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:52,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:52,940 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6936 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 4624 trivial. 0 not checked. [2018-01-30 02:50:53,569 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:53,569 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 02:50:53,573 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:50:53,606 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:53,609 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6936 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 4624 trivial. 0 not checked. [2018-01-30 02:50:53,683 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:53,684 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-01-30 02:50:53,684 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 02:50:53,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 02:50:53,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 02:50:53,684 INFO L87 Difference]: Start difference. First operand 436 states and 440 transitions. Second operand 37 states. [2018-01-30 02:50:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:53,950 INFO L93 Difference]: Finished difference Result 746 states and 756 transitions. [2018-01-30 02:50:53,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-30 02:50:53,950 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 430 [2018-01-30 02:50:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:53,951 INFO L225 Difference]: With dead ends: 746 [2018-01-30 02:50:53,951 INFO L226 Difference]: Without dead ends: 454 [2018-01-30 02:50:53,951 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 02:50:53,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2018-01-30 02:50:53,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 448. [2018-01-30 02:50:53,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2018-01-30 02:50:53,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 452 transitions. [2018-01-30 02:50:53,955 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 452 transitions. Word has length 430 [2018-01-30 02:50:53,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:53,955 INFO L432 AbstractCegarLoop]: Abstraction has 448 states and 452 transitions. [2018-01-30 02:50:53,955 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 02:50:53,955 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 452 transitions. [2018-01-30 02:50:53,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-01-30 02:50:53,956 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:53,956 INFO L350 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:53,956 INFO L371 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:53,957 INFO L82 PathProgramCache]: Analyzing trace with hash 2142599420, now seen corresponding path program 35 times [2018-01-30 02:50:53,957 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:53,957 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:53,957 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:53,957 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:53,957 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:53,966 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7350 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2018-01-30 02:50:54,633 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:54,633 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 02:50:54,638 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:50:54,647 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,655 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,665 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,672 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,674 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,675 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,677 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,680 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,683 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,686 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,689 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,693 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,698 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,703 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,709 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,716 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,723 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,732 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,741 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,752 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,764 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,778 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,794 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,812 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,832 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,853 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,878 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,905 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,936 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:54,971 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:55,008 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:55,052 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:55,100 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:55,150 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:55,205 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:55,676 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:50:55,679 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:55,685 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7350 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2018-01-30 02:50:55,768 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:55,769 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-01-30 02:50:55,769 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-30 02:50:55,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-30 02:50:55,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 02:50:55,770 INFO L87 Difference]: Start difference. First operand 448 states and 452 transitions. Second operand 38 states. [2018-01-30 02:50:56,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:56,053 INFO L93 Difference]: Finished difference Result 766 states and 776 transitions. [2018-01-30 02:50:56,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-01-30 02:50:56,054 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 442 [2018-01-30 02:50:56,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:56,055 INFO L225 Difference]: With dead ends: 766 [2018-01-30 02:50:56,055 INFO L226 Difference]: Without dead ends: 466 [2018-01-30 02:50:56,056 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 02:50:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2018-01-30 02:50:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 460. [2018-01-30 02:50:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2018-01-30 02:50:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 464 transitions. [2018-01-30 02:50:56,060 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 464 transitions. Word has length 442 [2018-01-30 02:50:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:56,060 INFO L432 AbstractCegarLoop]: Abstraction has 460 states and 464 transitions. [2018-01-30 02:50:56,060 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-30 02:50:56,060 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 464 transitions. [2018-01-30 02:50:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-01-30 02:50:56,061 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:56,063 INFO L350 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:56,063 INFO L371 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:56,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1711400319, now seen corresponding path program 36 times [2018-01-30 02:50:56,063 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:56,063 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:56,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:56,063 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:56,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:56,074 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7776 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2018-01-30 02:50:56,741 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:56,741 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 02:50:56,747 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:50:56,764 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,766 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,767 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,768 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,769 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,771 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,772 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,774 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,776 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,778 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,781 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,784 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,787 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,790 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,795 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,798 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,802 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,806 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,812 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,817 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,823 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,830 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,837 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,844 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,851 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,859 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,869 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,878 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,888 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,902 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,914 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,928 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,942 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,956 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,972 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:56,990 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:57,042 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:50:57,044 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:50:57,048 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7776 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 5184 trivial. 0 not checked. [2018-01-30 02:50:57,132 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:57,132 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-01-30 02:50:57,132 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-30 02:50:57,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-30 02:50:57,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 02:50:57,133 INFO L87 Difference]: Start difference. First operand 460 states and 464 transitions. Second operand 39 states. [2018-01-30 02:50:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:58,112 INFO L93 Difference]: Finished difference Result 786 states and 796 transitions. [2018-01-30 02:50:58,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-30 02:50:58,112 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 454 [2018-01-30 02:50:58,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:58,113 INFO L225 Difference]: With dead ends: 786 [2018-01-30 02:50:58,113 INFO L226 Difference]: Without dead ends: 478 [2018-01-30 02:50:58,114 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 02:50:58,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2018-01-30 02:50:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 472. [2018-01-30 02:50:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2018-01-30 02:50:58,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 476 transitions. [2018-01-30 02:50:58,124 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 476 transitions. Word has length 454 [2018-01-30 02:50:58,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:58,124 INFO L432 AbstractCegarLoop]: Abstraction has 472 states and 476 transitions. [2018-01-30 02:50:58,124 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-30 02:50:58,124 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 476 transitions. [2018-01-30 02:50:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-01-30 02:50:58,125 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:58,126 INFO L350 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:58,126 INFO L371 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:58,126 INFO L82 PathProgramCache]: Analyzing trace with hash 65813638, now seen corresponding path program 37 times [2018-01-30 02:50:58,126 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:58,126 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:58,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:58,126 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:50:58,126 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:58,139 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:50:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8214 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 5476 trivial. 0 not checked. [2018-01-30 02:50:59,005 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:50:59,005 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 02:50:59,010 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:59,045 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:50:59,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8214 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 5476 trivial. 0 not checked. [2018-01-30 02:50:59,128 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:50:59,129 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-01-30 02:50:59,129 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-01-30 02:50:59,129 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-01-30 02:50:59,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 02:50:59,129 INFO L87 Difference]: Start difference. First operand 472 states and 476 transitions. Second operand 40 states. [2018-01-30 02:50:59,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:50:59,722 INFO L93 Difference]: Finished difference Result 806 states and 816 transitions. [2018-01-30 02:50:59,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-01-30 02:50:59,722 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 466 [2018-01-30 02:50:59,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:50:59,723 INFO L225 Difference]: With dead ends: 806 [2018-01-30 02:50:59,723 INFO L226 Difference]: Without dead ends: 490 [2018-01-30 02:50:59,724 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 02:50:59,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2018-01-30 02:50:59,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 484. [2018-01-30 02:50:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-01-30 02:50:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 488 transitions. [2018-01-30 02:50:59,727 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 488 transitions. Word has length 466 [2018-01-30 02:50:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:50:59,728 INFO L432 AbstractCegarLoop]: Abstraction has 484 states and 488 transitions. [2018-01-30 02:50:59,728 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-01-30 02:50:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 488 transitions. [2018-01-30 02:50:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-01-30 02:50:59,729 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:50:59,729 INFO L350 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:50:59,729 INFO L371 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:50:59,729 INFO L82 PathProgramCache]: Analyzing trace with hash 84516619, now seen corresponding path program 38 times [2018-01-30 02:50:59,729 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:50:59,730 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:50:59,730 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:59,730 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:50:59,730 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:50:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:50:59,739 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:51:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8664 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 5776 trivial. 0 not checked. [2018-01-30 02:51:00,458 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:51:00,459 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 02:51:00,464 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:51:00,479 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:00,510 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:00,516 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:51:00,519 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:51:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8664 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 5776 trivial. 0 not checked. [2018-01-30 02:51:00,610 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:51:00,611 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-01-30 02:51:00,611 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-30 02:51:00,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-30 02:51:00,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 02:51:00,611 INFO L87 Difference]: Start difference. First operand 484 states and 488 transitions. Second operand 41 states. [2018-01-30 02:51:00,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:51:00,927 INFO L93 Difference]: Finished difference Result 826 states and 836 transitions. [2018-01-30 02:51:00,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-30 02:51:00,928 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 478 [2018-01-30 02:51:00,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:51:00,929 INFO L225 Difference]: With dead ends: 826 [2018-01-30 02:51:00,929 INFO L226 Difference]: Without dead ends: 502 [2018-01-30 02:51:00,929 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 02:51:00,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2018-01-30 02:51:00,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 496. [2018-01-30 02:51:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2018-01-30 02:51:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 500 transitions. [2018-01-30 02:51:00,933 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 500 transitions. Word has length 478 [2018-01-30 02:51:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:51:00,933 INFO L432 AbstractCegarLoop]: Abstraction has 496 states and 500 transitions. [2018-01-30 02:51:00,933 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-30 02:51:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 500 transitions. [2018-01-30 02:51:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-01-30 02:51:00,934 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:51:00,935 INFO L350 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:51:00,935 INFO L371 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:51:00,935 INFO L82 PathProgramCache]: Analyzing trace with hash -562036208, now seen corresponding path program 39 times [2018-01-30 02:51:00,935 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:51:00,935 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:51:00,935 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:00,935 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:51:00,935 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:51:00,945 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:51:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9126 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2018-01-30 02:51:01,833 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:51:01,833 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 02:51:01,842 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:51:01,851 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,858 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,860 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,867 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,868 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,870 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,873 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,875 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,879 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,882 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,886 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,890 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,894 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,899 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,905 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,912 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,919 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,927 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,937 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,949 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,959 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,971 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:01,984 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,003 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,019 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,039 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,061 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,085 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,113 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,141 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,174 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,212 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,254 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,297 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,346 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,400 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,453 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,511 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,575 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,647 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:02,649 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:51:02,654 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:51:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9126 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 6084 trivial. 0 not checked. [2018-01-30 02:51:02,750 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:51:02,750 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-01-30 02:51:02,751 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-30 02:51:02,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-30 02:51:02,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-01-30 02:51:02,751 INFO L87 Difference]: Start difference. First operand 496 states and 500 transitions. Second operand 42 states. [2018-01-30 02:51:03,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:51:03,104 INFO L93 Difference]: Finished difference Result 846 states and 856 transitions. [2018-01-30 02:51:03,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-30 02:51:03,104 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 490 [2018-01-30 02:51:03,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:51:03,105 INFO L225 Difference]: With dead ends: 846 [2018-01-30 02:51:03,105 INFO L226 Difference]: Without dead ends: 514 [2018-01-30 02:51:03,106 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-01-30 02:51:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2018-01-30 02:51:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 508. [2018-01-30 02:51:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-01-30 02:51:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 512 transitions. [2018-01-30 02:51:03,112 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 512 transitions. Word has length 490 [2018-01-30 02:51:03,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:51:03,112 INFO L432 AbstractCegarLoop]: Abstraction has 508 states and 512 transitions. [2018-01-30 02:51:03,112 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-30 02:51:03,112 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 512 transitions. [2018-01-30 02:51:03,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-01-30 02:51:03,113 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:51:03,113 INFO L350 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:51:03,114 INFO L371 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:51:03,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1155979883, now seen corresponding path program 40 times [2018-01-30 02:51:03,114 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:51:03,114 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:51:03,114 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:03,114 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:51:03,114 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:51:03,124 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:51:04,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9600 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2018-01-30 02:51:04,020 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:51:04,020 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 02:51:04,025 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:51:04,063 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:51:04,065 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:51:04,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9600 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2018-01-30 02:51:04,165 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:51:04,165 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-01-30 02:51:04,165 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-30 02:51:04,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-30 02:51:04,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-01-30 02:51:04,166 INFO L87 Difference]: Start difference. First operand 508 states and 512 transitions. Second operand 43 states. [2018-01-30 02:51:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:51:04,495 INFO L93 Difference]: Finished difference Result 866 states and 876 transitions. [2018-01-30 02:51:04,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-30 02:51:04,495 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 502 [2018-01-30 02:51:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:51:04,496 INFO L225 Difference]: With dead ends: 866 [2018-01-30 02:51:04,497 INFO L226 Difference]: Without dead ends: 526 [2018-01-30 02:51:04,497 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-01-30 02:51:04,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2018-01-30 02:51:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 520. [2018-01-30 02:51:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-01-30 02:51:04,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 524 transitions. [2018-01-30 02:51:04,501 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 524 transitions. Word has length 502 [2018-01-30 02:51:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:51:04,501 INFO L432 AbstractCegarLoop]: Abstraction has 520 states and 524 transitions. [2018-01-30 02:51:04,501 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-30 02:51:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 524 transitions. [2018-01-30 02:51:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-01-30 02:51:04,504 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:51:04,505 INFO L350 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:51:04,505 INFO L371 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:51:04,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1623275110, now seen corresponding path program 41 times [2018-01-30 02:51:04,505 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:51:04,505 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:51:04,505 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:04,505 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:51:04,505 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:51:04,516 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:51:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 10086 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 6724 trivial. 0 not checked. [2018-01-30 02:51:05,441 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:51:05,441 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 02:51:05,445 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:51:05,454 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,455 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,456 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,458 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,459 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,461 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,463 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,465 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,468 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,471 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,475 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,479 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,483 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,488 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,494 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,501 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,508 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,517 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,526 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,537 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,549 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,563 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,579 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,597 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,616 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,638 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,662 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,690 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,720 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,755 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,793 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,837 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,884 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,936 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:05,990 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:06,049 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:06,114 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:06,186 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:06,262 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:06,345 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:06,434 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:10,254 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:10,259 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:51:10,266 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:51:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 10086 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 6724 trivial. 0 not checked. [2018-01-30 02:51:10,367 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:51:10,367 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-01-30 02:51:10,367 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-30 02:51:10,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-30 02:51:10,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-01-30 02:51:10,368 INFO L87 Difference]: Start difference. First operand 520 states and 524 transitions. Second operand 44 states. [2018-01-30 02:51:10,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:51:10,655 INFO L93 Difference]: Finished difference Result 886 states and 896 transitions. [2018-01-30 02:51:10,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-01-30 02:51:10,655 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 514 [2018-01-30 02:51:10,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:51:10,656 INFO L225 Difference]: With dead ends: 886 [2018-01-30 02:51:10,656 INFO L226 Difference]: Without dead ends: 538 [2018-01-30 02:51:10,657 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 515 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 02:51:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2018-01-30 02:51:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 532. [2018-01-30 02:51:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-01-30 02:51:10,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 536 transitions. [2018-01-30 02:51:10,660 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 536 transitions. Word has length 514 [2018-01-30 02:51:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:51:10,660 INFO L432 AbstractCegarLoop]: Abstraction has 532 states and 536 transitions. [2018-01-30 02:51:10,660 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-30 02:51:10,661 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 536 transitions. [2018-01-30 02:51:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-01-30 02:51:10,662 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:51:10,662 INFO L350 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:51:10,662 INFO L371 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:51:10,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1492823583, now seen corresponding path program 42 times [2018-01-30 02:51:10,663 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:51:10,663 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:51:10,663 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:10,663 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:51:10,663 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:51:10,673 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:51:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 7056 trivial. 0 not checked. [2018-01-30 02:51:11,656 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:51:11,656 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 02:51:11,661 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:51:11,671 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,673 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,674 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,675 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,676 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,678 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,680 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,681 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,683 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,685 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,688 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,691 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,694 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,698 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,702 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,706 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,709 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,713 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,719 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,725 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,731 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,737 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,744 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,752 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,759 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,767 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,777 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,786 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,797 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,810 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,823 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,837 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,850 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,865 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,882 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,900 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,919 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,940 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,962 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:11,984 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:12,088 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:12,248 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:12,322 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:51:12,324 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:51:12,330 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:51:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10584 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 7056 trivial. 0 not checked. [2018-01-30 02:51:12,442 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:51:12,442 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-01-30 02:51:12,442 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-30 02:51:12,442 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-30 02:51:12,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 02:51:12,443 INFO L87 Difference]: Start difference. First operand 532 states and 536 transitions. Second operand 45 states. [2018-01-30 02:51:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:51:12,803 INFO L93 Difference]: Finished difference Result 906 states and 916 transitions. [2018-01-30 02:51:12,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-30 02:51:12,804 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 526 [2018-01-30 02:51:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:51:12,805 INFO L225 Difference]: With dead ends: 906 [2018-01-30 02:51:12,805 INFO L226 Difference]: Without dead ends: 550 [2018-01-30 02:51:12,806 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-01-30 02:51:12,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2018-01-30 02:51:12,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 544. [2018-01-30 02:51:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2018-01-30 02:51:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 548 transitions. [2018-01-30 02:51:12,809 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 548 transitions. Word has length 526 [2018-01-30 02:51:12,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:51:12,809 INFO L432 AbstractCegarLoop]: Abstraction has 544 states and 548 transitions. [2018-01-30 02:51:12,809 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-30 02:51:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 548 transitions. [2018-01-30 02:51:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-01-30 02:51:12,811 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:51:12,811 INFO L350 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:51:12,811 INFO L371 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:51:12,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1878430500, now seen corresponding path program 43 times [2018-01-30 02:51:12,811 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:51:12,811 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:51:12,811 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:12,812 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:51:12,812 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:51:12,822 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:51:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 11094 backedges. 0 proven. 3698 refuted. 0 times theorem prover too weak. 7396 trivial. 0 not checked. [2018-01-30 02:51:13,764 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:51:13,764 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:51:13,768 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:51:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:51:13,811 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:51:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11094 backedges. 0 proven. 3698 refuted. 0 times theorem prover too weak. 7396 trivial. 0 not checked. [2018-01-30 02:51:13,913 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:51:13,913 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-01-30 02:51:13,914 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-30 02:51:13,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-30 02:51:13,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-01-30 02:51:13,914 INFO L87 Difference]: Start difference. First operand 544 states and 548 transitions. Second operand 46 states. [2018-01-30 02:51:14,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:51:14,241 INFO L93 Difference]: Finished difference Result 926 states and 936 transitions. [2018-01-30 02:51:14,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-01-30 02:51:14,241 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 538 [2018-01-30 02:51:14,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:51:14,243 INFO L225 Difference]: With dead ends: 926 [2018-01-30 02:51:14,243 INFO L226 Difference]: Without dead ends: 562 [2018-01-30 02:51:14,243 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-01-30 02:51:14,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2018-01-30 02:51:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 556. [2018-01-30 02:51:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2018-01-30 02:51:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 560 transitions. [2018-01-30 02:51:14,246 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 560 transitions. Word has length 538 [2018-01-30 02:51:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:51:14,247 INFO L432 AbstractCegarLoop]: Abstraction has 556 states and 560 transitions. [2018-01-30 02:51:14,247 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-30 02:51:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 560 transitions. [2018-01-30 02:51:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-01-30 02:51:14,248 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:51:14,248 INFO L350 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:51:14,249 INFO L371 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:51:14,249 INFO L82 PathProgramCache]: Analyzing trace with hash 360462505, now seen corresponding path program 44 times [2018-01-30 02:51:14,249 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:51:14,249 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:51:14,249 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:14,249 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:51:14,249 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:51:14,260 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:51:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 11616 backedges. 0 proven. 3872 refuted. 0 times theorem prover too weak. 7744 trivial. 0 not checked. [2018-01-30 02:51:15,598 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:51:15,598 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:51:15,603 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:51:15,612 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:15,646 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:15,650 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:51:15,653 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:51:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 11616 backedges. 0 proven. 3872 refuted. 0 times theorem prover too weak. 7744 trivial. 0 not checked. [2018-01-30 02:51:15,756 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:51:15,756 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-01-30 02:51:15,756 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-01-30 02:51:15,757 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-01-30 02:51:15,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-01-30 02:51:15,757 INFO L87 Difference]: Start difference. First operand 556 states and 560 transitions. Second operand 47 states. [2018-01-30 02:51:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:51:16,148 INFO L93 Difference]: Finished difference Result 946 states and 956 transitions. [2018-01-30 02:51:16,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-01-30 02:51:16,148 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 550 [2018-01-30 02:51:16,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:51:16,149 INFO L225 Difference]: With dead ends: 946 [2018-01-30 02:51:16,149 INFO L226 Difference]: Without dead ends: 574 [2018-01-30 02:51:16,150 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-01-30 02:51:16,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2018-01-30 02:51:16,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 568. [2018-01-30 02:51:16,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2018-01-30 02:51:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 572 transitions. [2018-01-30 02:51:16,153 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 572 transitions. Word has length 550 [2018-01-30 02:51:16,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:51:16,153 INFO L432 AbstractCegarLoop]: Abstraction has 568 states and 572 transitions. [2018-01-30 02:51:16,153 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-01-30 02:51:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 572 transitions. [2018-01-30 02:51:16,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-01-30 02:51:16,155 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:51:16,155 INFO L350 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:51:16,155 INFO L371 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:51:16,155 INFO L82 PathProgramCache]: Analyzing trace with hash 343236270, now seen corresponding path program 45 times [2018-01-30 02:51:16,155 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:51:16,155 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:51:16,156 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:16,156 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:51:16,156 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:51:16,167 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:51:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12150 backedges. 0 proven. 4050 refuted. 0 times theorem prover too weak. 8100 trivial. 0 not checked. [2018-01-30 02:51:17,233 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:51:17,233 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:51:17,238 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:51:17,247 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,254 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,256 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,263 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,264 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,271 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,273 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,276 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,280 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,283 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,287 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,291 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,295 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,300 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,306 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,313 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,322 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,330 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,339 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,349 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,359 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,372 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,388 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,404 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,424 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,443 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,465 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,488 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,517 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,545 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,579 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,615 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,653 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,697 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,747 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,800 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,854 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,915 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:17,981 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:18,051 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:18,124 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:18,205 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:18,293 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:18,385 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:18,484 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:18,592 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:51:18,595 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:51:18,601 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:51:18,693 INFO L134 CoverageAnalysis]: Checked inductivity of 12150 backedges. 0 proven. 4050 refuted. 0 times theorem prover too weak. 8100 trivial. 0 not checked. [2018-01-30 02:51:18,712 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:51:18,712 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-01-30 02:51:18,713 INFO L409 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-01-30 02:51:18,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-01-30 02:51:18,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-01-30 02:51:18,713 INFO L87 Difference]: Start difference. First operand 568 states and 572 transitions. Second operand 48 states. [2018-01-30 02:51:19,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:51:19,008 INFO L93 Difference]: Finished difference Result 966 states and 976 transitions. [2018-01-30 02:51:19,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-30 02:51:19,008 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 562 [2018-01-30 02:51:19,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:51:19,009 INFO L225 Difference]: With dead ends: 966 [2018-01-30 02:51:19,009 INFO L226 Difference]: Without dead ends: 586 [2018-01-30 02:51:19,010 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-01-30 02:51:19,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2018-01-30 02:51:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 580. [2018-01-30 02:51:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2018-01-30 02:51:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 584 transitions. [2018-01-30 02:51:19,013 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 584 transitions. Word has length 562 [2018-01-30 02:51:19,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:51:19,013 INFO L432 AbstractCegarLoop]: Abstraction has 580 states and 584 transitions. [2018-01-30 02:51:19,013 INFO L433 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-01-30 02:51:19,013 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 584 transitions. [2018-01-30 02:51:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2018-01-30 02:51:19,015 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:51:19,015 INFO L350 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:51:19,015 INFO L371 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:51:19,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1049901773, now seen corresponding path program 46 times [2018-01-30 02:51:19,016 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:51:19,016 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:51:19,016 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:19,016 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:51:19,016 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:51:19,027 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:51:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12696 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 8464 trivial. 0 not checked. [2018-01-30 02:51:20,154 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:51:20,154 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:51:20,159 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:51:20,202 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:51:20,204 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:51:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12696 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 8464 trivial. 0 not checked. [2018-01-30 02:51:20,318 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:51:20,318 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-01-30 02:51:20,319 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-30 02:51:20,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-30 02:51:20,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-01-30 02:51:20,319 INFO L87 Difference]: Start difference. First operand 580 states and 584 transitions. Second operand 49 states. [2018-01-30 02:51:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:51:20,653 INFO L93 Difference]: Finished difference Result 986 states and 996 transitions. [2018-01-30 02:51:20,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-30 02:51:20,654 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 574 [2018-01-30 02:51:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:51:20,655 INFO L225 Difference]: With dead ends: 986 [2018-01-30 02:51:20,655 INFO L226 Difference]: Without dead ends: 598 [2018-01-30 02:51:20,655 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-01-30 02:51:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2018-01-30 02:51:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 592. [2018-01-30 02:51:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2018-01-30 02:51:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 596 transitions. [2018-01-30 02:51:20,659 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 596 transitions. Word has length 574 [2018-01-30 02:51:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:51:20,659 INFO L432 AbstractCegarLoop]: Abstraction has 592 states and 596 transitions. [2018-01-30 02:51:20,659 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-30 02:51:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 596 transitions. [2018-01-30 02:51:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-01-30 02:51:20,661 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:51:20,661 INFO L350 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:51:20,661 INFO L371 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:51:20,661 INFO L82 PathProgramCache]: Analyzing trace with hash -360109000, now seen corresponding path program 47 times [2018-01-30 02:51:20,661 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:51:20,661 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:51:20,662 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:20,662 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:51:20,662 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:51:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:51:20,673 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:51:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13254 backedges. 0 proven. 4418 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2018-01-30 02:51:21,838 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:51:21,838 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:51:21,843 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:51:21,854 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,856 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,857 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,858 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,860 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,861 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,863 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,865 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,868 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,871 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,879 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,883 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,888 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,894 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,901 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,908 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,916 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,926 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,937 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,949 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,964 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,980 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:21,998 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,017 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,039 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,064 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,091 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,122 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,156 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,195 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,239 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,286 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,336 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,391 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,450 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,516 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,586 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,662 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,746 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,836 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:22,933 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:23,038 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:23,153 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:23,276 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:23,410 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:23,551 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command Received shutdown request... [2018-01-30 02:51:35,565 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:51:35,569 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:51:35,576 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:51:35,578 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-30 02:51:35,578 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 02:51:35,581 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 02:51:35,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:51:35 BasicIcfg [2018-01-30 02:51:35,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 02:51:35,582 INFO L168 Benchmark]: Toolchain (without parser) took 70790.12 ms. Allocated memory was 149.4 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 115.5 MB in the beginning and 544.0 MB in the end (delta: -428.5 MB). Peak memory consumption was 818.8 MB. Max. memory is 5.3 GB. [2018-01-30 02:51:35,583 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 149.4 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 02:51:35,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.51 ms. Allocated memory is still 149.4 MB. Free memory was 115.5 MB in the beginning and 107.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 5.3 GB. [2018-01-30 02:51:35,583 INFO L168 Benchmark]: Boogie Preprocessor took 17.00 ms. Allocated memory is still 149.4 MB. Free memory was 107.0 MB in the beginning and 105.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-01-30 02:51:35,583 INFO L168 Benchmark]: RCFGBuilder took 379.20 ms. Allocated memory is still 149.4 MB. Free memory was 105.7 MB in the beginning and 93.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 5.3 GB. [2018-01-30 02:51:35,583 INFO L168 Benchmark]: IcfgTransformer took 11.22 ms. Allocated memory is still 149.4 MB. Free memory was 93.4 MB in the beginning and 92.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. [2018-01-30 02:51:35,583 INFO L168 Benchmark]: TraceAbstraction took 70264.75 ms. Allocated memory was 149.4 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 92.0 MB in the beginning and 544.0 MB in the end (delta: -452.0 MB). Peak memory consumption was 795.3 MB. Max. memory is 5.3 GB. [2018-01-30 02:51:35,584 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 149.4 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 115.51 ms. Allocated memory is still 149.4 MB. Free memory was 115.5 MB in the beginning and 107.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 17.00 ms. Allocated memory is still 149.4 MB. Free memory was 107.0 MB in the beginning and 105.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 379.20 ms. Allocated memory is still 149.4 MB. Free memory was 105.7 MB in the beginning and 93.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 5.3 GB. * IcfgTransformer took 11.22 ms. Allocated memory is still 149.4 MB. Free memory was 93.4 MB in the beginning and 92.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 70264.75 ms. Allocated memory was 149.4 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 92.0 MB in the beginning and 544.0 MB in the end (delta: -452.0 MB). Peak memory consumption was 795.3 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 analyzing trace of length 587 with TraceHistMax 48, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. TIMEOUT Result, 70.2s OverallTime, 49 OverallIterations, 48 TraceHistogramMax, 13.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1406 SDtfs, 11617 SDslu, 16644 SDs, 0 SdLazy, 12564 SolverSat, 2983 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15162 GetRequests, 14034 SyntacticMatches, 0 SemanticMatches, 1128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=592occurred in iteration=48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 48 MinimizatonAttempts, 282 StatesRemovedByMinimization, 47 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 13.6s SatisfiabilityAnalysisTime, 24.4s InterpolantComputationTime, 28009 NumberOfCodeBlocks, 28009 NumberOfCodeBlocksAsserted, 631 NumberOfCheckSat, 27915 ConstructedInterpolants, 0 QuantifiedInterpolants, 17691069 SizeOfPredicates, 46 NumberOfNonLiveVariables, 17917 ConjunctsInSsa, 1173 ConjunctsInUnsatCore, 94 InterpolantComputations, 2 PerfectInterpolantSequences, 268088/402132 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_init3_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_02-51-35-588.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_init3_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_02-51-35-588.csv Completed graceful shutdown