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_copy8_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 02:44:37,259 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 02:44:37,261 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 02:44:37,273 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 02:44:37,273 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 02:44:37,273 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 02:44:37,274 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 02:44:37,276 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 02:44:37,277 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 02:44:37,277 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 02:44:37,278 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 02:44:37,278 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 02:44:37,279 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 02:44:37,280 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 02:44:37,280 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 02:44:37,287 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 02:44:37,288 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 02:44:37,289 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 02:44:37,290 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 02:44:37,290 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 02:44:37,294 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 02:44:37,296 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-30 02:44:37,296 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-30 02:44:37,297 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 02:44:37,304 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 02:44:37,304 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 02:44:37,304 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 02:44:37,304 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 02:44:37,304 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 02:44:37,304 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 02:44:37,304 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 02:44:37,305 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 02:44:37,308 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 02:44:37,308 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 02:44:37,308 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 02:44:37,308 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 02:44:37,309 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 02:44:37,309 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 02:44:37,309 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 02:44:37,309 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 02:44:37,309 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 02:44:37,309 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 02:44:37,309 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 02:44:37,309 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 02:44:37,309 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 02:44:37,309 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 02:44:37,310 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 02:44:37,310 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 02:44:37,310 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 02:44:37,310 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 02:44:37,310 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 02:44:37,310 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 02:44:37,310 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 02:44:37,310 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 02:44:37,310 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 02:44:37,310 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 02:44:37,311 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 02:44:37,311 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 02:44:37,329 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 02:44:37,335 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 02:44:37,337 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 02:44:37,338 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 02:44:37,338 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 02:44:37,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy8_false-unreach-call_ground.i [2018-01-30 02:44:37,406 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 02:44:37,407 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 02:44:37,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 02:44:37,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 02:44:37,411 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 02:44:37,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:44:37" (1/1) ... [2018-01-30 02:44:37,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0299ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:44:37, skipping insertion in model container [2018-01-30 02:44:37,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:44:37" (1/1) ... [2018-01-30 02:44:37,422 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:44:37,431 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:44:37,501 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:44:37,513 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:44:37,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:44:37 WrapperNode [2018-01-30 02:44:37,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 02:44:37,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 02:44:37,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 02:44:37,520 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 02:44:37,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:44:37" (1/1) ... [2018-01-30 02:44:37,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:44:37" (1/1) ... [2018-01-30 02:44:37,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:44:37" (1/1) ... [2018-01-30 02:44:37,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:44:37" (1/1) ... [2018-01-30 02:44:37,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:44:37" (1/1) ... [2018-01-30 02:44:37,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:44:37" (1/1) ... [2018-01-30 02:44:37,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:44:37" (1/1) ... [2018-01-30 02:44:37,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 02:44:37,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 02:44:37,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 02:44:37,539 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 02:44:37,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:44:37" (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 02:44:37,583 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 02:44:37,583 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 02:44:37,583 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 02:44:37,583 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 02:44:37,583 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 02:44:37,583 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 02:44:37,584 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-30 02:44:37,584 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 02:44:37,584 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 02:44:37,584 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 02:44:37,968 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 02:44:37,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:44:37 BoogieIcfgContainer [2018-01-30 02:44:37,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 02:44:37,968 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 02:44:37,969 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 02:44:37,969 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 02:44:37,971 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:44:37" (1/1) ... [2018-01-30 02:44:37,974 WARN L213 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-01-30 02:44:37,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:44:37 BasicIcfg [2018-01-30 02:44:37,982 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 02:44:37,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 02:44:37,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 02:44:37,985 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 02:44:37,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:44:37" (1/4) ... [2018-01-30 02:44:37,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ffab9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:44:37, skipping insertion in model container [2018-01-30 02:44:37,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:44:37" (2/4) ... [2018-01-30 02:44:37,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ffab9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:44:37, skipping insertion in model container [2018-01-30 02:44:37,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:44:37" (3/4) ... [2018-01-30 02:44:37,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ffab9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:44:37, skipping insertion in model container [2018-01-30 02:44:37,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:44:37" (4/4) ... [2018-01-30 02:44:37,987 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_copy8_false-unreach-call_ground.ileft_unchanged_by_heapseparator [2018-01-30 02:44:37,992 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 02:44:37,997 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 02:44:38,022 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 02:44:38,022 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 02:44:38,022 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 02:44:38,022 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 02:44:38,022 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 02:44:38,022 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 02:44:38,022 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 02:44:38,022 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 02:44:38,023 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 02:44:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2018-01-30 02:44:38,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-30 02:44:38,037 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:38,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:38,038 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:38,040 INFO L82 PathProgramCache]: Analyzing trace with hash -177281171, now seen corresponding path program 1 times [2018-01-30 02:44:38,041 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:38,042 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:38,071 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:38,071 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:38,072 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:38,093 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:38,122 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 02:44:38,124 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:44:38,124 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 02:44:38,125 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 02:44:38,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 02:44:38,132 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 02:44:38,134 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 2 states. [2018-01-30 02:44:38,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:38,150 INFO L93 Difference]: Finished difference Result 178 states and 216 transitions. [2018-01-30 02:44:38,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 02:44:38,151 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 41 [2018-01-30 02:44:38,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:38,157 INFO L225 Difference]: With dead ends: 178 [2018-01-30 02:44:38,157 INFO L226 Difference]: Without dead ends: 97 [2018-01-30 02:44:38,159 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 02:44:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-01-30 02:44:38,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-01-30 02:44:38,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-01-30 02:44:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2018-01-30 02:44:38,183 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 41 [2018-01-30 02:44:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:38,183 INFO L432 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2018-01-30 02:44:38,183 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 02:44:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2018-01-30 02:44:38,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-30 02:44:38,184 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:38,184 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, 1, 1, 1, 1, 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 02:44:38,184 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:38,185 INFO L82 PathProgramCache]: Analyzing trace with hash -956049977, now seen corresponding path program 1 times [2018-01-30 02:44:38,185 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:38,185 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:38,185 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:38,186 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:38,186 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:38,193 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:38,281 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 02:44:38,281 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:44:38,281 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 02:44:38,282 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 02:44:38,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 02:44:38,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 02:44:38,283 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand 3 states. [2018-01-30 02:44:38,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:38,356 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2018-01-30 02:44:38,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 02:44:38,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-01-30 02:44:38,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:38,357 INFO L225 Difference]: With dead ends: 178 [2018-01-30 02:44:38,357 INFO L226 Difference]: Without dead ends: 107 [2018-01-30 02:44:38,358 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 02:44:38,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-01-30 02:44:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 99. [2018-01-30 02:44:38,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-01-30 02:44:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2018-01-30 02:44:38,363 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 50 [2018-01-30 02:44:38,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:38,363 INFO L432 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2018-01-30 02:44:38,364 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 02:44:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2018-01-30 02:44:38,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-01-30 02:44:38,364 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:38,365 INFO L350 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:38,365 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:38,365 INFO L82 PathProgramCache]: Analyzing trace with hash -223099171, now seen corresponding path program 1 times [2018-01-30 02:44:38,365 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:38,365 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:38,366 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:38,366 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:38,366 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:38,377 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-30 02:44:38,409 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:44:38,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 02:44:38,409 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 02:44:38,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 02:44:38,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 02:44:38,410 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand 3 states. [2018-01-30 02:44:38,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:38,680 INFO L93 Difference]: Finished difference Result 202 states and 228 transitions. [2018-01-30 02:44:38,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 02:44:38,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-01-30 02:44:38,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:38,681 INFO L225 Difference]: With dead ends: 202 [2018-01-30 02:44:38,681 INFO L226 Difference]: Without dead ends: 139 [2018-01-30 02:44:38,682 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 02:44:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-01-30 02:44:38,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 115. [2018-01-30 02:44:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-30 02:44:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 125 transitions. [2018-01-30 02:44:38,688 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 125 transitions. Word has length 61 [2018-01-30 02:44:38,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:38,688 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 125 transitions. [2018-01-30 02:44:38,688 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 02:44:38,688 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 125 transitions. [2018-01-30 02:44:38,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-01-30 02:44:38,690 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:38,690 INFO L350 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:38,690 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:38,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1912673314, now seen corresponding path program 1 times [2018-01-30 02:44:38,690 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:38,690 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:38,691 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:38,691 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:38,691 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:38,711 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-30 02:44:38,849 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:38,849 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-30 02:44:38,862 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:38,897 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-30 02:44:38,935 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:38,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 02:44:38,936 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 02:44:38,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 02:44:38,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-30 02:44:38,936 INFO L87 Difference]: Start difference. First operand 115 states and 125 transitions. Second operand 5 states. [2018-01-30 02:44:39,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:39,050 INFO L93 Difference]: Finished difference Result 221 states and 241 transitions. [2018-01-30 02:44:39,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 02:44:39,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2018-01-30 02:44:39,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:39,056 INFO L225 Difference]: With dead ends: 221 [2018-01-30 02:44:39,056 INFO L226 Difference]: Without dead ends: 134 [2018-01-30 02:44:39,058 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:44:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-01-30 02:44:39,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 126. [2018-01-30 02:44:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-30 02:44:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2018-01-30 02:44:39,064 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 109 [2018-01-30 02:44:39,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:39,064 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2018-01-30 02:44:39,065 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 02:44:39,065 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2018-01-30 02:44:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-01-30 02:44:39,066 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:39,067 INFO L350 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:39,067 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:39,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1615342328, now seen corresponding path program 2 times [2018-01-30 02:44:39,067 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:39,067 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:39,068 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:39,068 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:39,068 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:39,083 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-01-30 02:44:39,144 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:39,144 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 02:44:39,150 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:44:39,159 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:39,177 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:39,181 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:39,183 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-01-30 02:44:39,296 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:39,296 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-30 02:44:39,296 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 02:44:39,297 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 02:44:39,297 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-30 02:44:39,297 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand 10 states. [2018-01-30 02:44:39,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:39,885 INFO L93 Difference]: Finished difference Result 262 states and 283 transitions. [2018-01-30 02:44:39,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 02:44:39,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2018-01-30 02:44:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:39,886 INFO L225 Difference]: With dead ends: 262 [2018-01-30 02:44:39,886 INFO L226 Difference]: Without dead ends: 175 [2018-01-30 02:44:39,887 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-30 02:44:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-30 02:44:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 143. [2018-01-30 02:44:39,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-30 02:44:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2018-01-30 02:44:39,891 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 120 [2018-01-30 02:44:39,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:39,892 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2018-01-30 02:44:39,892 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 02:44:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2018-01-30 02:44:39,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-01-30 02:44:39,893 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:39,893 INFO L350 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:39,893 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:39,893 INFO L82 PathProgramCache]: Analyzing trace with hash -554286863, now seen corresponding path program 3 times [2018-01-30 02:44:39,893 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:39,893 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:39,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:39,894 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:39,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:39,909 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-01-30 02:44:40,080 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:40,080 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 02:44:40,085 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:44:40,093 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:40,103 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:40,104 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:40,106 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-01-30 02:44:40,135 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:40,135 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 02:44:40,136 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 02:44:40,136 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 02:44:40,136 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-30 02:44:40,136 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand 5 states. [2018-01-30 02:44:40,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:40,250 INFO L93 Difference]: Finished difference Result 238 states and 256 transitions. [2018-01-30 02:44:40,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 02:44:40,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-01-30 02:44:40,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:40,251 INFO L225 Difference]: With dead ends: 238 [2018-01-30 02:44:40,251 INFO L226 Difference]: Without dead ends: 170 [2018-01-30 02:44:40,251 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:44:40,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-30 02:44:40,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 149. [2018-01-30 02:44:40,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-30 02:44:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 159 transitions. [2018-01-30 02:44:40,255 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 159 transitions. Word has length 137 [2018-01-30 02:44:40,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:40,255 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 159 transitions. [2018-01-30 02:44:40,255 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 02:44:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 159 transitions. [2018-01-30 02:44:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-01-30 02:44:40,256 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:40,257 INFO L350 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:40,257 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:40,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1575978336, now seen corresponding path program 4 times [2018-01-30 02:44:40,257 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:40,257 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:40,257 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:40,258 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:40,258 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:40,271 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-01-30 02:44:40,360 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:40,360 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 02:44:40,364 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:44:40,385 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:40,387 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-30 02:44:40,509 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:40,509 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2018-01-30 02:44:40,509 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 02:44:40,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 02:44:40,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-01-30 02:44:40,510 INFO L87 Difference]: Start difference. First operand 149 states and 159 transitions. Second operand 12 states. [2018-01-30 02:44:40,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:40,718 INFO L93 Difference]: Finished difference Result 291 states and 312 transitions. [2018-01-30 02:44:40,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-30 02:44:40,718 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2018-01-30 02:44:40,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:40,719 INFO L225 Difference]: With dead ends: 291 [2018-01-30 02:44:40,719 INFO L226 Difference]: Without dead ends: 192 [2018-01-30 02:44:40,719 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2018-01-30 02:44:40,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-30 02:44:40,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 166. [2018-01-30 02:44:40,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-01-30 02:44:40,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 176 transitions. [2018-01-30 02:44:40,723 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 176 transitions. Word has length 143 [2018-01-30 02:44:40,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:40,723 INFO L432 AbstractCegarLoop]: Abstraction has 166 states and 176 transitions. [2018-01-30 02:44:40,723 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 02:44:40,724 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 176 transitions. [2018-01-30 02:44:40,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-01-30 02:44:40,725 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:40,725 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:40,725 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:40,725 INFO L82 PathProgramCache]: Analyzing trace with hash 12687003, now seen corresponding path program 5 times [2018-01-30 02:44:40,725 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:40,725 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:40,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:40,726 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:40,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:40,744 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-01-30 02:44:40,803 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:40,803 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 02:44:40,808 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:44:40,821 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:40,832 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:40,848 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:40,862 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:40,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:40,885 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:40,887 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:41,092 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-01-30 02:44:41,109 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:41,109 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2018-01-30 02:44:41,110 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 02:44:41,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 02:44:41,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-01-30 02:44:41,110 INFO L87 Difference]: Start difference. First operand 166 states and 176 transitions. Second operand 14 states. [2018-01-30 02:44:41,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:41,436 INFO L93 Difference]: Finished difference Result 311 states and 332 transitions. [2018-01-30 02:44:41,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 02:44:41,438 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 160 [2018-01-30 02:44:41,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:41,439 INFO L225 Difference]: With dead ends: 311 [2018-01-30 02:44:41,439 INFO L226 Difference]: Without dead ends: 206 [2018-01-30 02:44:41,439 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2018-01-30 02:44:41,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-01-30 02:44:41,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 183. [2018-01-30 02:44:41,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-30 02:44:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 193 transitions. [2018-01-30 02:44:41,449 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 193 transitions. Word has length 160 [2018-01-30 02:44:41,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:41,449 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 193 transitions. [2018-01-30 02:44:41,449 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 02:44:41,449 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 193 transitions. [2018-01-30 02:44:41,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-01-30 02:44:41,450 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:41,451 INFO L350 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:41,451 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:41,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1151317439, now seen corresponding path program 6 times [2018-01-30 02:44:41,451 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:41,451 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:41,451 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:41,462 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:41,462 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:41,480 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-01-30 02:44:41,620 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:41,621 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 02:44:41,626 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:44:41,633 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:41,639 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:41,643 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:41,644 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:41,645 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-01-30 02:44:41,672 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:41,672 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 02:44:41,673 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 02:44:41,673 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 02:44:41,673 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-30 02:44:41,673 INFO L87 Difference]: Start difference. First operand 183 states and 193 transitions. Second operand 5 states. [2018-01-30 02:44:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:41,776 INFO L93 Difference]: Finished difference Result 242 states and 257 transitions. [2018-01-30 02:44:41,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 02:44:41,785 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2018-01-30 02:44:41,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:41,786 INFO L225 Difference]: With dead ends: 242 [2018-01-30 02:44:41,786 INFO L226 Difference]: Without dead ends: 201 [2018-01-30 02:44:41,786 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:44:41,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-01-30 02:44:41,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 189. [2018-01-30 02:44:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-30 02:44:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 199 transitions. [2018-01-30 02:44:41,789 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 199 transitions. Word has length 177 [2018-01-30 02:44:41,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:41,789 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 199 transitions. [2018-01-30 02:44:41,789 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 02:44:41,789 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 199 transitions. [2018-01-30 02:44:41,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-01-30 02:44:41,791 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:41,791 INFO L350 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:41,791 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:41,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1903783662, now seen corresponding path program 7 times [2018-01-30 02:44:41,791 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:41,791 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:41,792 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:41,792 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:41,792 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:41,802 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-01-30 02:44:41,858 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:41,858 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 02:44:41,863 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:41,890 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-01-30 02:44:41,974 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:41,975 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13] total 16 [2018-01-30 02:44:41,975 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-30 02:44:41,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-30 02:44:41,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-01-30 02:44:41,975 INFO L87 Difference]: Start difference. First operand 189 states and 199 transitions. Second operand 16 states. [2018-01-30 02:44:42,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:42,299 INFO L93 Difference]: Finished difference Result 340 states and 361 transitions. [2018-01-30 02:44:42,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-30 02:44:42,299 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 183 [2018-01-30 02:44:42,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:42,300 INFO L225 Difference]: With dead ends: 340 [2018-01-30 02:44:42,300 INFO L226 Difference]: Without dead ends: 223 [2018-01-30 02:44:42,300 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2018-01-30 02:44:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-01-30 02:44:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 206. [2018-01-30 02:44:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-30 02:44:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 216 transitions. [2018-01-30 02:44:42,306 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 216 transitions. Word has length 183 [2018-01-30 02:44:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:42,306 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 216 transitions. [2018-01-30 02:44:42,306 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-30 02:44:42,306 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 216 transitions. [2018-01-30 02:44:42,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-30 02:44:42,307 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:42,307 INFO L350 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:44:42,307 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:42,307 INFO L82 PathProgramCache]: Analyzing trace with hash 463304937, now seen corresponding path program 8 times [2018-01-30 02:44:42,307 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:42,307 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:42,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:42,308 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:42,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:42,324 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2018-01-30 02:44:42,421 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:42,421 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 02:44:42,426 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:44:42,434 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:42,443 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:42,445 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:42,447 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-01-30 02:44:42,557 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:42,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15] total 18 [2018-01-30 02:44:42,558 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 02:44:42,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 02:44:42,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-01-30 02:44:42,558 INFO L87 Difference]: Start difference. First operand 206 states and 216 transitions. Second operand 18 states. [2018-01-30 02:44:42,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:42,955 INFO L93 Difference]: Finished difference Result 360 states and 381 transitions. [2018-01-30 02:44:42,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-30 02:44:42,961 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 200 [2018-01-30 02:44:42,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:42,961 INFO L225 Difference]: With dead ends: 360 [2018-01-30 02:44:42,962 INFO L226 Difference]: Without dead ends: 237 [2018-01-30 02:44:42,962 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=260, Invalid=732, Unknown=0, NotChecked=0, Total=992 [2018-01-30 02:44:42,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-01-30 02:44:42,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 223. [2018-01-30 02:44:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-01-30 02:44:42,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 233 transitions. [2018-01-30 02:44:42,972 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 233 transitions. Word has length 200 [2018-01-30 02:44:42,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:42,973 INFO L432 AbstractCegarLoop]: Abstraction has 223 states and 233 transitions. [2018-01-30 02:44:42,973 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 02:44:42,973 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 233 transitions. [2018-01-30 02:44:42,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-01-30 02:44:42,974 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:42,974 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 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 02:44:42,974 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:42,974 INFO L82 PathProgramCache]: Analyzing trace with hash -625993613, now seen corresponding path program 9 times [2018-01-30 02:44:42,974 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:42,974 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:42,975 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:42,975 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:42,975 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:43,003 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-01-30 02:44:43,069 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:43,069 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 02:44:43,074 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:44:43,082 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:43,098 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:43,108 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:43,110 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-01-30 02:44:43,155 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:43,155 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 02:44:43,156 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 02:44:43,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 02:44:43,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-30 02:44:43,156 INFO L87 Difference]: Start difference. First operand 223 states and 233 transitions. Second operand 5 states. [2018-01-30 02:44:43,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:43,282 INFO L93 Difference]: Finished difference Result 246 states and 258 transitions. [2018-01-30 02:44:43,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 02:44:43,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2018-01-30 02:44:43,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:43,284 INFO L225 Difference]: With dead ends: 246 [2018-01-30 02:44:43,284 INFO L226 Difference]: Without dead ends: 232 [2018-01-30 02:44:43,284 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:44:43,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-01-30 02:44:43,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 229. [2018-01-30 02:44:43,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-30 02:44:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 239 transitions. [2018-01-30 02:44:43,287 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 239 transitions. Word has length 217 [2018-01-30 02:44:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:43,287 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 239 transitions. [2018-01-30 02:44:43,287 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 02:44:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 239 transitions. [2018-01-30 02:44:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-01-30 02:44:43,288 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:43,288 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 02:44:43,288 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:43,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1048589089, now seen corresponding path program 10 times [2018-01-30 02:44:43,288 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:43,288 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:43,289 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:43,289 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:43,289 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:43,298 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2018-01-30 02:44:43,583 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:43,583 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 02:44:43,588 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:44:43,612 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:43,614 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:43,765 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-01-30 02:44:43,784 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:43,784 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 17] total 22 [2018-01-30 02:44:43,784 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-30 02:44:43,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-30 02:44:43,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2018-01-30 02:44:43,784 INFO L87 Difference]: Start difference. First operand 229 states and 239 transitions. Second operand 22 states. [2018-01-30 02:44:44,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:44,180 INFO L93 Difference]: Finished difference Result 392 states and 413 transitions. [2018-01-30 02:44:44,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 02:44:44,181 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 223 [2018-01-30 02:44:44,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:44,182 INFO L225 Difference]: With dead ends: 392 [2018-01-30 02:44:44,182 INFO L226 Difference]: Without dead ends: 257 [2018-01-30 02:44:44,183 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 02:44:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-01-30 02:44:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 246. [2018-01-30 02:44:44,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-01-30 02:44:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 256 transitions. [2018-01-30 02:44:44,185 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 256 transitions. Word has length 223 [2018-01-30 02:44:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:44,186 INFO L432 AbstractCegarLoop]: Abstraction has 246 states and 256 transitions. [2018-01-30 02:44:44,186 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-30 02:44:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 256 transitions. [2018-01-30 02:44:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-30 02:44:44,186 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:44,186 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 02:44:44,186 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:44,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1816396150, now seen corresponding path program 11 times [2018-01-30 02:44:44,187 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:44,187 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:44,187 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:44,187 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:44,187 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:44,197 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-01-30 02:44:44,278 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:44,278 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 02:44:44,288 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:44:44,294 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:44,295 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:44,297 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:44,299 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:44,301 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:44,302 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:44,307 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:44,312 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:44,320 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:44,321 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:44,322 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2018-01-30 02:44:44,361 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:44,361 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-30 02:44:44,361 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 02:44:44,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 02:44:44,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:44:44,362 INFO L87 Difference]: Start difference. First operand 246 states and 256 transitions. Second operand 9 states. [2018-01-30 02:44:45,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:45,020 INFO L93 Difference]: Finished difference Result 374 states and 393 transitions. [2018-01-30 02:44:45,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 02:44:45,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 240 [2018-01-30 02:44:45,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:45,021 INFO L225 Difference]: With dead ends: 374 [2018-01-30 02:44:45,021 INFO L226 Difference]: Without dead ends: 264 [2018-01-30 02:44:45,022 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:44:45,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-01-30 02:44:45,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 258. [2018-01-30 02:44:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-01-30 02:44:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 268 transitions. [2018-01-30 02:44:45,025 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 268 transitions. Word has length 240 [2018-01-30 02:44:45,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:45,026 INFO L432 AbstractCegarLoop]: Abstraction has 258 states and 268 transitions. [2018-01-30 02:44:45,026 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 02:44:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 268 transitions. [2018-01-30 02:44:45,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-01-30 02:44:45,027 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:45,027 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 02:44:45,027 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:45,027 INFO L82 PathProgramCache]: Analyzing trace with hash 115573366, now seen corresponding path program 12 times [2018-01-30 02:44:45,027 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:45,027 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:45,028 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:45,028 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:45,028 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:45,038 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2018-01-30 02:44:45,121 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:45,121 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 02:44:45,125 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:44:45,132 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:45,139 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:45,143 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:45,145 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:45,149 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:45,150 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:45,152 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2018-01-30 02:44:45,216 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:45,216 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-30 02:44:45,216 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 02:44:45,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 02:44:45,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:44:45,217 INFO L87 Difference]: Start difference. First operand 258 states and 268 transitions. Second operand 9 states. [2018-01-30 02:44:45,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:45,446 INFO L93 Difference]: Finished difference Result 356 states and 373 transitions. [2018-01-30 02:44:45,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 02:44:45,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 252 [2018-01-30 02:44:45,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:45,447 INFO L225 Difference]: With dead ends: 356 [2018-01-30 02:44:45,447 INFO L226 Difference]: Without dead ends: 276 [2018-01-30 02:44:45,447 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:44:45,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-01-30 02:44:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2018-01-30 02:44:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-01-30 02:44:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 280 transitions. [2018-01-30 02:44:45,451 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 280 transitions. Word has length 252 [2018-01-30 02:44:45,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:45,451 INFO L432 AbstractCegarLoop]: Abstraction has 270 states and 280 transitions. [2018-01-30 02:44:45,451 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 02:44:45,451 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 280 transitions. [2018-01-30 02:44:45,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-01-30 02:44:45,452 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:45,452 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 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 02:44:45,452 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1240413232, now seen corresponding path program 13 times [2018-01-30 02:44:45,452 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:45,452 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:45,453 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:45,453 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:45,453 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:45,461 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2018-01-30 02:44:45,747 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:45,747 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 02:44:45,757 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:45,784 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-01-30 02:44:45,957 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:45,957 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 19] total 24 [2018-01-30 02:44:45,958 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-30 02:44:45,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-30 02:44:45,958 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2018-01-30 02:44:45,958 INFO L87 Difference]: Start difference. First operand 270 states and 280 transitions. Second operand 24 states. [2018-01-30 02:44:46,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:46,288 INFO L93 Difference]: Finished difference Result 463 states and 484 transitions. [2018-01-30 02:44:46,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-01-30 02:44:46,289 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 264 [2018-01-30 02:44:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:46,290 INFO L225 Difference]: With dead ends: 463 [2018-01-30 02:44:46,290 INFO L226 Difference]: Without dead ends: 298 [2018-01-30 02:44:46,291 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=445, Invalid=1447, Unknown=0, NotChecked=0, Total=1892 [2018-01-30 02:44:46,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-01-30 02:44:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 287. [2018-01-30 02:44:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-01-30 02:44:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 297 transitions. [2018-01-30 02:44:46,294 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 297 transitions. Word has length 264 [2018-01-30 02:44:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:46,295 INFO L432 AbstractCegarLoop]: Abstraction has 287 states and 297 transitions. [2018-01-30 02:44:46,295 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-30 02:44:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 297 transitions. [2018-01-30 02:44:46,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-01-30 02:44:46,296 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:46,296 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 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 02:44:46,296 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:46,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1377291289, now seen corresponding path program 14 times [2018-01-30 02:44:46,296 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:46,296 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:46,296 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:46,296 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:46,297 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:46,307 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-01-30 02:44:46,774 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:46,774 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) [2018-01-30 02:44:46,780 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:46,790 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:46,814 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:46,825 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:46,828 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-01-30 02:44:47,047 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:47,047 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 21] total 26 [2018-01-30 02:44:47,047 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-30 02:44:47,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-30 02:44:47,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2018-01-30 02:44:47,048 INFO L87 Difference]: Start difference. First operand 287 states and 297 transitions. Second operand 26 states. [2018-01-30 02:44:47,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:47,501 INFO L93 Difference]: Finished difference Result 486 states and 507 transitions. [2018-01-30 02:44:47,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-30 02:44:47,502 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 281 [2018-01-30 02:44:47,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:47,503 INFO L225 Difference]: With dead ends: 486 [2018-01-30 02:44:47,503 INFO L226 Difference]: Without dead ends: 315 [2018-01-30 02:44:47,504 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=540, Invalid=1716, Unknown=0, NotChecked=0, Total=2256 [2018-01-30 02:44:47,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-01-30 02:44:47,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 304. [2018-01-30 02:44:47,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2018-01-30 02:44:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 314 transitions. [2018-01-30 02:44:47,507 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 314 transitions. Word has length 281 [2018-01-30 02:44:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:47,507 INFO L432 AbstractCegarLoop]: Abstraction has 304 states and 314 transitions. [2018-01-30 02:44:47,507 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-30 02:44:47,507 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 314 transitions. [2018-01-30 02:44:47,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-01-30 02:44:47,508 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:47,509 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:47,509 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:47,509 INFO L82 PathProgramCache]: Analyzing trace with hash 787454614, now seen corresponding path program 15 times [2018-01-30 02:44:47,509 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:47,509 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:47,509 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:47,509 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:47,510 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:47,520 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2018-01-30 02:44:47,952 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:47,952 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 02:44:47,958 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:44:47,967 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:47,981 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:47,995 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:48,005 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:48,007 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:48,031 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2018-01-30 02:44:48,048 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:48,049 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-01-30 02:44:48,049 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 02:44:48,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 02:44:48,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:44:48,049 INFO L87 Difference]: Start difference. First operand 304 states and 314 transitions. Second operand 7 states. [2018-01-30 02:44:49,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:49,342 INFO L93 Difference]: Finished difference Result 348 states and 361 transitions. [2018-01-30 02:44:49,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 02:44:49,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2018-01-30 02:44:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:49,343 INFO L225 Difference]: With dead ends: 348 [2018-01-30 02:44:49,343 INFO L226 Difference]: Without dead ends: 313 [2018-01-30 02:44:49,344 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-30 02:44:49,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-01-30 02:44:49,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 310. [2018-01-30 02:44:49,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2018-01-30 02:44:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 320 transitions. [2018-01-30 02:44:49,347 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 320 transitions. Word has length 298 [2018-01-30 02:44:49,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:49,347 INFO L432 AbstractCegarLoop]: Abstraction has 310 states and 320 transitions. [2018-01-30 02:44:49,347 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 02:44:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 320 transitions. [2018-01-30 02:44:49,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-30 02:44:49,348 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:49,348 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:49,348 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:49,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1025391542, now seen corresponding path program 16 times [2018-01-30 02:44:49,348 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:49,349 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:49,349 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:49,349 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:49,349 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:49,363 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:50,051 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2018-01-30 02:44:50,051 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:50,051 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) [2018-01-30 02:44:50,063 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:50,122 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:50,124 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:50,425 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 515 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-01-30 02:44:50,442 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:50,443 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23] total 30 [2018-01-30 02:44:50,443 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-30 02:44:50,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-30 02:44:50,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2018-01-30 02:44:50,443 INFO L87 Difference]: Start difference. First operand 310 states and 320 transitions. Second operand 30 states. [2018-01-30 02:44:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:51,942 INFO L93 Difference]: Finished difference Result 521 states and 542 transitions. [2018-01-30 02:44:51,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-30 02:44:51,942 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 304 [2018-01-30 02:44:51,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:51,943 INFO L225 Difference]: With dead ends: 521 [2018-01-30 02:44:51,943 INFO L226 Difference]: Without dead ends: 338 [2018-01-30 02:44:51,944 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=680, Invalid=2400, Unknown=0, NotChecked=0, Total=3080 [2018-01-30 02:44:51,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-01-30 02:44:51,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 327. [2018-01-30 02:44:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-01-30 02:44:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 337 transitions. [2018-01-30 02:44:51,953 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 337 transitions. Word has length 304 [2018-01-30 02:44:51,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:51,954 INFO L432 AbstractCegarLoop]: Abstraction has 327 states and 337 transitions. [2018-01-30 02:44:51,954 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-30 02:44:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 337 transitions. [2018-01-30 02:44:51,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-01-30 02:44:51,955 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:51,955 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:51,955 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:51,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1941336812, now seen corresponding path program 17 times [2018-01-30 02:44:51,955 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:51,955 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:51,955 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:51,956 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:51,956 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:51,966 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2018-01-30 02:44:52,944 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:52,944 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) [2018-01-30 02:44:52,949 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:52,956 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:52,969 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:52,979 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:52,992 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:53,002 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:53,012 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:53,022 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:53,033 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:53,048 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:53,062 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:53,075 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:53,088 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:53,098 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:53,106 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:53,597 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2018-01-30 02:44:53,615 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:53,615 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 14 [2018-01-30 02:44:53,616 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 02:44:53,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 02:44:53,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-01-30 02:44:53,616 INFO L87 Difference]: Start difference. First operand 327 states and 337 transitions. Second operand 14 states. [2018-01-30 02:44:53,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:53,879 INFO L93 Difference]: Finished difference Result 407 states and 422 transitions. [2018-01-30 02:44:53,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 02:44:53,880 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 321 [2018-01-30 02:44:53,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:53,881 INFO L225 Difference]: With dead ends: 407 [2018-01-30 02:44:53,881 INFO L226 Difference]: Without dead ends: 345 [2018-01-30 02:44:53,881 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2018-01-30 02:44:53,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-01-30 02:44:53,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 339. [2018-01-30 02:44:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-01-30 02:44:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 349 transitions. [2018-01-30 02:44:53,884 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 349 transitions. Word has length 321 [2018-01-30 02:44:53,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:53,885 INFO L432 AbstractCegarLoop]: Abstraction has 339 states and 349 transitions. [2018-01-30 02:44:53,885 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 02:44:53,885 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 349 transitions. [2018-01-30 02:44:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-01-30 02:44:53,886 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:53,886 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:53,886 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:53,886 INFO L82 PathProgramCache]: Analyzing trace with hash -265966091, now seen corresponding path program 18 times [2018-01-30 02:44:53,886 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:53,886 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:53,887 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:53,887 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:53,887 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:53,897 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2018-01-30 02:44:54,574 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:54,574 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) [2018-01-30 02:44:54,582 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:54,591 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:54,602 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:54,615 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:54,626 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:54,638 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:54,649 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:54,665 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:54,675 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:54,677 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2018-01-30 02:44:55,144 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:55,144 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-01-30 02:44:55,144 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 02:44:55,144 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 02:44:55,144 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-01-30 02:44:55,145 INFO L87 Difference]: Start difference. First operand 339 states and 349 transitions. Second operand 12 states. [2018-01-30 02:44:55,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:55,839 INFO L93 Difference]: Finished difference Result 536 states and 556 transitions. [2018-01-30 02:44:55,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 02:44:55,839 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 333 [2018-01-30 02:44:55,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:55,840 INFO L225 Difference]: With dead ends: 536 [2018-01-30 02:44:55,840 INFO L226 Difference]: Without dead ends: 357 [2018-01-30 02:44:55,840 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2018-01-30 02:44:55,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-01-30 02:44:55,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 351. [2018-01-30 02:44:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-01-30 02:44:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 361 transitions. [2018-01-30 02:44:55,843 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 361 transitions. Word has length 333 [2018-01-30 02:44:55,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:55,844 INFO L432 AbstractCegarLoop]: Abstraction has 351 states and 361 transitions. [2018-01-30 02:44:55,844 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 02:44:55,844 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 361 transitions. [2018-01-30 02:44:55,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-01-30 02:44:55,845 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:55,845 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:55,845 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:55,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1517166388, now seen corresponding path program 19 times [2018-01-30 02:44:55,845 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:55,845 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:55,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:55,846 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:55,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:55,857 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:56,369 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2018-01-30 02:44:56,369 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:56,369 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 02:44:56,374 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:56,411 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2018-01-30 02:44:56,756 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:56,757 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 25] total 34 [2018-01-30 02:44:56,757 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-30 02:44:56,757 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-30 02:44:56,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=920, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 02:44:56,758 INFO L87 Difference]: Start difference. First operand 351 states and 361 transitions. Second operand 34 states. [2018-01-30 02:44:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:57,336 INFO L93 Difference]: Finished difference Result 592 states and 613 transitions. [2018-01-30 02:44:57,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-30 02:44:57,338 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 345 [2018-01-30 02:44:57,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:57,339 INFO L225 Difference]: With dead ends: 592 [2018-01-30 02:44:57,339 INFO L226 Difference]: Without dead ends: 379 [2018-01-30 02:44:57,340 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=840, Invalid=3192, Unknown=0, NotChecked=0, Total=4032 [2018-01-30 02:44:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-01-30 02:44:57,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 368. [2018-01-30 02:44:57,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-01-30 02:44:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 378 transitions. [2018-01-30 02:44:57,343 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 378 transitions. Word has length 345 [2018-01-30 02:44:57,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:57,343 INFO L432 AbstractCegarLoop]: Abstraction has 368 states and 378 transitions. [2018-01-30 02:44:57,343 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-30 02:44:57,343 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 378 transitions. [2018-01-30 02:44:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-01-30 02:44:57,344 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:57,344 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:57,344 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:57,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1219192438, now seen corresponding path program 20 times [2018-01-30 02:44:57,345 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:57,345 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:57,345 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:57,345 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:57,345 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:57,356 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1030 trivial. 0 not checked. [2018-01-30 02:44:57,558 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:57,558 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 02:44:57,563 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:44:57,580 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:57,608 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:57,618 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:57,621 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-01-30 02:44:59,020 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:59,020 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 27] total 36 [2018-01-30 02:44:59,020 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 02:44:59,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 02:44:59,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 02:44:59,021 INFO L87 Difference]: Start difference. First operand 368 states and 378 transitions. Second operand 36 states. [2018-01-30 02:44:59,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:59,677 INFO L93 Difference]: Finished difference Result 615 states and 636 transitions. [2018-01-30 02:44:59,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-30 02:44:59,677 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 362 [2018-01-30 02:44:59,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:59,678 INFO L225 Difference]: With dead ends: 615 [2018-01-30 02:44:59,678 INFO L226 Difference]: Without dead ends: 396 [2018-01-30 02:44:59,679 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2018-01-30 02:44:59,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2018-01-30 02:44:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 385. [2018-01-30 02:44:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-01-30 02:44:59,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 395 transitions. [2018-01-30 02:44:59,682 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 395 transitions. Word has length 362 [2018-01-30 02:44:59,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:59,683 INFO L432 AbstractCegarLoop]: Abstraction has 385 states and 395 transitions. [2018-01-30 02:44:59,683 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 02:44:59,683 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 395 transitions. [2018-01-30 02:44:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-01-30 02:44:59,684 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:59,684 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:59,684 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:59,684 INFO L82 PathProgramCache]: Analyzing trace with hash 634766029, now seen corresponding path program 21 times [2018-01-30 02:44:59,684 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:59,684 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:59,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:59,685 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:59,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:59,698 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2018-01-30 02:44:59,836 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:59,837 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 02:44:59,841 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:44:59,856 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:59,861 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:59,867 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:59,874 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:59,875 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:59,877 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2018-01-30 02:45:00,021 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:00,021 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-01-30 02:45:00,022 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 02:45:00,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 02:45:00,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-01-30 02:45:00,022 INFO L87 Difference]: Start difference. First operand 385 states and 395 transitions. Second operand 12 states. [2018-01-30 02:45:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:00,175 INFO L93 Difference]: Finished difference Result 579 states and 598 transitions. [2018-01-30 02:45:00,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 02:45:00,175 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 379 [2018-01-30 02:45:00,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:00,176 INFO L225 Difference]: With dead ends: 579 [2018-01-30 02:45:00,176 INFO L226 Difference]: Without dead ends: 403 [2018-01-30 02:45:00,176 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2018-01-30 02:45:00,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-01-30 02:45:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 397. [2018-01-30 02:45:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-01-30 02:45:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 407 transitions. [2018-01-30 02:45:00,179 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 407 transitions. Word has length 379 [2018-01-30 02:45:00,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:00,179 INFO L432 AbstractCegarLoop]: Abstraction has 397 states and 407 transitions. [2018-01-30 02:45:00,179 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 02:45:00,180 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 407 transitions. [2018-01-30 02:45:00,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-01-30 02:45:00,181 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:00,181 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:45:00,181 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:00,181 INFO L82 PathProgramCache]: Analyzing trace with hash -993125750, now seen corresponding path program 22 times [2018-01-30 02:45:00,181 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:00,181 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:00,182 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:00,182 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:00,182 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:00,193 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:00,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1230 trivial. 0 not checked. [2018-01-30 02:45:00,406 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:00,406 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 02:45:00,410 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:45:00,470 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:00,473 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2018-01-30 02:45:00,777 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:00,777 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 29] total 38 [2018-01-30 02:45:00,778 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-30 02:45:00,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-30 02:45:00,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 02:45:00,778 INFO L87 Difference]: Start difference. First operand 397 states and 407 transitions. Second operand 38 states. [2018-01-30 02:45:01,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:01,323 INFO L93 Difference]: Finished difference Result 662 states and 683 transitions. [2018-01-30 02:45:01,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-01-30 02:45:01,335 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 391 [2018-01-30 02:45:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:01,336 INFO L225 Difference]: With dead ends: 662 [2018-01-30 02:45:01,336 INFO L226 Difference]: Without dead ends: 425 [2018-01-30 02:45:01,337 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1100, Invalid=4012, Unknown=0, NotChecked=0, Total=5112 [2018-01-30 02:45:01,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-01-30 02:45:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 414. [2018-01-30 02:45:01,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2018-01-30 02:45:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 424 transitions. [2018-01-30 02:45:01,340 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 424 transitions. Word has length 391 [2018-01-30 02:45:01,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:01,341 INFO L432 AbstractCegarLoop]: Abstraction has 414 states and 424 transitions. [2018-01-30 02:45:01,341 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-30 02:45:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 424 transitions. [2018-01-30 02:45:01,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-30 02:45:01,342 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:01,342 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:45:01,342 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:01,343 INFO L82 PathProgramCache]: Analyzing trace with hash -2118614526, now seen corresponding path program 23 times [2018-01-30 02:45:01,343 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:01,343 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:01,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:01,343 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:01,343 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:01,357 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:01,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2018-01-30 02:45:01,928 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:01,928 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 02:45:01,933 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:45:01,941 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,942 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,943 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,945 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,946 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,947 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,949 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,951 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,953 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,957 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,962 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,968 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,975 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:01,983 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:02,017 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:02,018 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:02,021 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 1375 trivial. 0 not checked. [2018-01-30 02:45:02,222 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:02,223 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 17 [2018-01-30 02:45:02,223 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 02:45:02,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 02:45:02,223 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:45:02,223 INFO L87 Difference]: Start difference. First operand 414 states and 424 transitions. Second operand 17 states. [2018-01-30 02:45:02,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:02,417 INFO L93 Difference]: Finished difference Result 620 states and 639 transitions. [2018-01-30 02:45:02,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-30 02:45:02,417 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 408 [2018-01-30 02:45:02,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:02,418 INFO L225 Difference]: With dead ends: 620 [2018-01-30 02:45:02,418 INFO L226 Difference]: Without dead ends: 432 [2018-01-30 02:45:02,419 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 02:45:02,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2018-01-30 02:45:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2018-01-30 02:45:02,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2018-01-30 02:45:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 436 transitions. [2018-01-30 02:45:02,422 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 436 transitions. Word has length 408 [2018-01-30 02:45:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:02,422 INFO L432 AbstractCegarLoop]: Abstraction has 426 states and 436 transitions. [2018-01-30 02:45:02,422 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 02:45:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 436 transitions. [2018-01-30 02:45:02,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-01-30 02:45:02,423 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:02,424 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:45:02,424 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:02,424 INFO L82 PathProgramCache]: Analyzing trace with hash 590870821, now seen corresponding path program 24 times [2018-01-30 02:45:02,424 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:02,424 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:02,424 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:02,424 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:02,424 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:02,435 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1503 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2018-01-30 02:45:02,702 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:02,702 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 02:45:02,715 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:45:02,727 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:02,728 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:02,734 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:02,736 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:02,740 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:02,743 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:02,748 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:02,762 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:02,764 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1503 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2018-01-30 02:45:02,955 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:02,955 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-01-30 02:45:02,956 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 02:45:02,956 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 02:45:02,956 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-01-30 02:45:02,956 INFO L87 Difference]: Start difference. First operand 426 states and 436 transitions. Second operand 12 states. [2018-01-30 02:45:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:03,114 INFO L93 Difference]: Finished difference Result 617 states and 635 transitions. [2018-01-30 02:45:03,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 02:45:03,115 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 420 [2018-01-30 02:45:03,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:03,116 INFO L225 Difference]: With dead ends: 617 [2018-01-30 02:45:03,116 INFO L226 Difference]: Without dead ends: 444 [2018-01-30 02:45:03,116 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2018-01-30 02:45:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2018-01-30 02:45:03,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 438. [2018-01-30 02:45:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2018-01-30 02:45:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 448 transitions. [2018-01-30 02:45:03,119 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 448 transitions. Word has length 420 [2018-01-30 02:45:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:03,119 INFO L432 AbstractCegarLoop]: Abstraction has 438 states and 448 transitions. [2018-01-30 02:45:03,119 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 02:45:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 448 transitions. [2018-01-30 02:45:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-01-30 02:45:03,121 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:03,121 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 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 02:45:03,121 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:03,121 INFO L82 PathProgramCache]: Analyzing trace with hash 523966601, now seen corresponding path program 25 times [2018-01-30 02:45:03,121 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:03,121 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:03,122 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:03,122 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:03,122 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:03,133 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1543 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 1473 trivial. 0 not checked. [2018-01-30 02:45:03,358 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:03,358 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 02:45:03,362 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:45:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:03,398 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1543 backedges. 0 proven. 1029 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2018-01-30 02:45:03,775 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:03,775 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 31] total 42 [2018-01-30 02:45:03,776 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-30 02:45:03,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-30 02:45:03,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1420, Unknown=0, NotChecked=0, Total=1722 [2018-01-30 02:45:03,776 INFO L87 Difference]: Start difference. First operand 438 states and 448 transitions. Second operand 42 states. [2018-01-30 02:45:04,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:04,499 INFO L93 Difference]: Finished difference Result 733 states and 754 transitions. [2018-01-30 02:45:04,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-01-30 02:45:04,499 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 432 [2018-01-30 02:45:04,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:04,500 INFO L225 Difference]: With dead ends: 733 [2018-01-30 02:45:04,501 INFO L226 Difference]: Without dead ends: 466 [2018-01-30 02:45:04,502 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1300, Invalid=5020, Unknown=0, NotChecked=0, Total=6320 [2018-01-30 02:45:04,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2018-01-30 02:45:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 455. [2018-01-30 02:45:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-01-30 02:45:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 465 transitions. [2018-01-30 02:45:04,506 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 465 transitions. Word has length 432 [2018-01-30 02:45:04,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:04,506 INFO L432 AbstractCegarLoop]: Abstraction has 455 states and 465 transitions. [2018-01-30 02:45:04,506 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-30 02:45:04,506 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 465 transitions. [2018-01-30 02:45:04,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-01-30 02:45:04,507 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:04,508 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 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 02:45:04,508 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:04,508 INFO L82 PathProgramCache]: Analyzing trace with hash 271792779, now seen corresponding path program 26 times [2018-01-30 02:45:04,508 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:04,508 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:04,509 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:04,509 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:45:04,509 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:04,520 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1687 trivial. 0 not checked. [2018-01-30 02:45:04,752 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:04,752 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 02:45:04,756 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:45:04,767 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:04,789 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:04,793 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:04,796 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:05,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 0 proven. 1185 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2018-01-30 02:45:05,303 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:05,303 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 33] total 42 [2018-01-30 02:45:05,303 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-30 02:45:05,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-30 02:45:05,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2018-01-30 02:45:05,304 INFO L87 Difference]: Start difference. First operand 455 states and 465 transitions. Second operand 42 states. [2018-01-30 02:45:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:05,939 INFO L93 Difference]: Finished difference Result 756 states and 777 transitions. [2018-01-30 02:45:05,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-01-30 02:45:05,940 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 449 [2018-01-30 02:45:05,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:05,940 INFO L225 Difference]: With dead ends: 756 [2018-01-30 02:45:05,941 INFO L226 Difference]: Without dead ends: 483 [2018-01-30 02:45:05,942 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1400, Invalid=4920, Unknown=0, NotChecked=0, Total=6320 [2018-01-30 02:45:05,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-01-30 02:45:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 472. [2018-01-30 02:45:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2018-01-30 02:45:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 482 transitions. [2018-01-30 02:45:05,948 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 482 transitions. Word has length 449 [2018-01-30 02:45:05,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:05,949 INFO L432 AbstractCegarLoop]: Abstraction has 472 states and 482 transitions. [2018-01-30 02:45:05,949 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-30 02:45:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 482 transitions. [2018-01-30 02:45:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-01-30 02:45:05,950 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:05,950 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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 02:45:05,950 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:05,951 INFO L82 PathProgramCache]: Analyzing trace with hash -490633976, now seen corresponding path program 27 times [2018-01-30 02:45:05,951 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:05,951 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:05,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:05,951 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:05,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:05,963 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:06,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 1854 trivial. 0 not checked. [2018-01-30 02:45:06,221 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:06,221 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 02:45:06,226 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:45:06,236 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:06,240 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:06,244 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:06,250 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:06,256 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:06,257 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:06,259 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1924 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1880 trivial. 0 not checked. [2018-01-30 02:45:06,354 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:06,354 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 17 [2018-01-30 02:45:06,354 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 02:45:06,354 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 02:45:06,355 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:45:06,355 INFO L87 Difference]: Start difference. First operand 472 states and 482 transitions. Second operand 17 states. [2018-01-30 02:45:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:06,629 INFO L93 Difference]: Finished difference Result 681 states and 699 transitions. [2018-01-30 02:45:06,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-30 02:45:06,629 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 466 [2018-01-30 02:45:06,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:06,630 INFO L225 Difference]: With dead ends: 681 [2018-01-30 02:45:06,631 INFO L226 Difference]: Without dead ends: 490 [2018-01-30 02:45:06,631 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=288, Invalid=902, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 02:45:06,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2018-01-30 02:45:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 484. [2018-01-30 02:45:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-01-30 02:45:06,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 494 transitions. [2018-01-30 02:45:06,636 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 494 transitions. Word has length 466 [2018-01-30 02:45:06,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:06,636 INFO L432 AbstractCegarLoop]: Abstraction has 484 states and 494 transitions. [2018-01-30 02:45:06,636 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 02:45:06,636 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 494 transitions. [2018-01-30 02:45:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-01-30 02:45:06,638 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:06,639 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:06,639 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:06,639 INFO L82 PathProgramCache]: Analyzing trace with hash 637195303, now seen corresponding path program 28 times [2018-01-30 02:45:06,639 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:06,639 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:06,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:06,639 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:06,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:06,653 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 1912 trivial. 0 not checked. [2018-01-30 02:45:07,459 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:07,459 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 02:45:07,464 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:45:07,533 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:07,536 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1982 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2018-01-30 02:45:08,405 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:08,405 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 35] total 46 [2018-01-30 02:45:08,405 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-30 02:45:08,406 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-30 02:45:08,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2018-01-30 02:45:08,406 INFO L87 Difference]: Start difference. First operand 484 states and 494 transitions. Second operand 46 states. [2018-01-30 02:45:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:09,211 INFO L93 Difference]: Finished difference Result 803 states and 824 transitions. [2018-01-30 02:45:09,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-30 02:45:09,211 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 478 [2018-01-30 02:45:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:09,212 INFO L225 Difference]: With dead ends: 803 [2018-01-30 02:45:09,212 INFO L226 Difference]: Without dead ends: 512 [2018-01-30 02:45:09,214 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2018-01-30 02:45:09,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2018-01-30 02:45:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 501. [2018-01-30 02:45:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2018-01-30 02:45:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 511 transitions. [2018-01-30 02:45:09,218 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 511 transitions. Word has length 478 [2018-01-30 02:45:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:09,218 INFO L432 AbstractCegarLoop]: Abstraction has 501 states and 511 transitions. [2018-01-30 02:45:09,218 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-30 02:45:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 511 transitions. [2018-01-30 02:45:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-01-30 02:45:09,219 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:09,220 INFO L350 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:09,220 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1930051440, now seen corresponding path program 29 times [2018-01-30 02:45:09,220 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:09,220 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:09,220 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:09,220 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:09,220 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:09,233 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2192 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2122 trivial. 0 not checked. [2018-01-30 02:45:09,573 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:09,573 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 02:45:09,578 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:45:09,589 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,590 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,592 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,593 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,594 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,595 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,597 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,599 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,601 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,603 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,605 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,609 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,616 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,623 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,631 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,641 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,652 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,678 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:09,680 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:09,683 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2192 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2122 trivial. 0 not checked. [2018-01-30 02:45:09,785 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:09,785 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2018-01-30 02:45:09,785 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 02:45:09,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 02:45:09,786 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-01-30 02:45:09,786 INFO L87 Difference]: Start difference. First operand 501 states and 511 transitions. Second operand 18 states. [2018-01-30 02:45:10,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:10,067 INFO L93 Difference]: Finished difference Result 722 states and 740 transitions. [2018-01-30 02:45:10,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 02:45:10,067 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 495 [2018-01-30 02:45:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:10,068 INFO L225 Difference]: With dead ends: 722 [2018-01-30 02:45:10,068 INFO L226 Difference]: Without dead ends: 519 [2018-01-30 02:45:10,069 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=328, Invalid=1078, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 02:45:10,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2018-01-30 02:45:10,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 513. [2018-01-30 02:45:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2018-01-30 02:45:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 523 transitions. [2018-01-30 02:45:10,073 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 523 transitions. Word has length 495 [2018-01-30 02:45:10,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:10,073 INFO L432 AbstractCegarLoop]: Abstraction has 513 states and 523 transitions. [2018-01-30 02:45:10,073 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 02:45:10,073 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 523 transitions. [2018-01-30 02:45:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2018-01-30 02:45:10,075 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:10,085 INFO L350 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:10,085 INFO L371 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:10,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1009732942, now seen corresponding path program 30 times [2018-01-30 02:45:10,085 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:10,085 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:10,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:10,086 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:10,086 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:10,110 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 2154 trivial. 0 not checked. [2018-01-30 02:45:10,470 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:10,470 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 02:45:10,475 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:45:10,487 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:10,488 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:10,491 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:10,494 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:10,498 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:10,501 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:10,505 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:10,509 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:10,514 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:10,515 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:10,517 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 2212 trivial. 0 not checked. [2018-01-30 02:45:10,613 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:10,613 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 19 [2018-01-30 02:45:10,613 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 02:45:10,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 02:45:10,614 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-01-30 02:45:10,614 INFO L87 Difference]: Start difference. First operand 513 states and 523 transitions. Second operand 19 states. [2018-01-30 02:45:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:10,864 INFO L93 Difference]: Finished difference Result 812 states and 832 transitions. [2018-01-30 02:45:10,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-30 02:45:10,864 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 507 [2018-01-30 02:45:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:10,865 INFO L225 Difference]: With dead ends: 812 [2018-01-30 02:45:10,865 INFO L226 Difference]: Without dead ends: 531 [2018-01-30 02:45:10,866 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 504 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 02:45:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-01-30 02:45:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 525. [2018-01-30 02:45:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-01-30 02:45:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 535 transitions. [2018-01-30 02:45:10,876 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 535 transitions. Word has length 507 [2018-01-30 02:45:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:10,876 INFO L432 AbstractCegarLoop]: Abstraction has 525 states and 535 transitions. [2018-01-30 02:45:10,876 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 02:45:10,876 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 535 transitions. [2018-01-30 02:45:10,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2018-01-30 02:45:10,877 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:10,878 INFO L350 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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 02:45:10,878 INFO L371 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:10,878 INFO L82 PathProgramCache]: Analyzing trace with hash 2069634893, now seen corresponding path program 31 times [2018-01-30 02:45:10,878 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:10,878 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:10,879 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:10,879 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:10,879 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:10,894 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2180 trivial. 0 not checked. [2018-01-30 02:45:11,285 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:11,285 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 02:45:11,290 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:45:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:11,330 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 0 proven. 1530 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2018-01-30 02:45:11,834 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:11,834 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 37] total 52 [2018-01-30 02:45:11,835 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-30 02:45:11,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-30 02:45:11,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2018-01-30 02:45:11,835 INFO L87 Difference]: Start difference. First operand 525 states and 535 transitions. Second operand 52 states. [2018-01-30 02:45:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:12,741 INFO L93 Difference]: Finished difference Result 874 states and 895 transitions. [2018-01-30 02:45:12,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-30 02:45:12,741 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 519 [2018-01-30 02:45:12,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:12,742 INFO L225 Difference]: With dead ends: 874 [2018-01-30 02:45:12,742 INFO L226 Difference]: Without dead ends: 553 [2018-01-30 02:45:12,743 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1935, Invalid=7965, Unknown=0, NotChecked=0, Total=9900 [2018-01-30 02:45:12,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2018-01-30 02:45:12,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 542. [2018-01-30 02:45:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2018-01-30 02:45:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 552 transitions. [2018-01-30 02:45:12,747 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 552 transitions. Word has length 519 [2018-01-30 02:45:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:12,747 INFO L432 AbstractCegarLoop]: Abstraction has 542 states and 552 transitions. [2018-01-30 02:45:12,747 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-30 02:45:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 552 transitions. [2018-01-30 02:45:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-01-30 02:45:12,749 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:12,749 INFO L350 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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 02:45:12,749 INFO L371 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:12,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1386326371, now seen corresponding path program 32 times [2018-01-30 02:45:12,749 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:12,749 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:12,750 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:12,750 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:45:12,750 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:12,771 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2553 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 2451 trivial. 0 not checked. [2018-01-30 02:45:13,491 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:13,491 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 02:45:13,496 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:45:13,507 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:13,532 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:13,537 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:13,540 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:14,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2553 backedges. 0 proven. 1719 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2018-01-30 02:45:14,055 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:14,055 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 39] total 52 [2018-01-30 02:45:14,055 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-30 02:45:14,056 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-30 02:45:14,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2191, Unknown=0, NotChecked=0, Total=2652 [2018-01-30 02:45:14,056 INFO L87 Difference]: Start difference. First operand 542 states and 552 transitions. Second operand 52 states. [2018-01-30 02:45:14,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:14,953 INFO L93 Difference]: Finished difference Result 897 states and 918 transitions. [2018-01-30 02:45:14,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-30 02:45:14,953 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 536 [2018-01-30 02:45:14,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:14,955 INFO L225 Difference]: With dead ends: 897 [2018-01-30 02:45:14,955 INFO L226 Difference]: Without dead ends: 570 [2018-01-30 02:45:14,956 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2045, Invalid=7855, Unknown=0, NotChecked=0, Total=9900 [2018-01-30 02:45:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2018-01-30 02:45:14,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 559. [2018-01-30 02:45:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2018-01-30 02:45:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 569 transitions. [2018-01-30 02:45:14,959 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 569 transitions. Word has length 536 [2018-01-30 02:45:14,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:14,959 INFO L432 AbstractCegarLoop]: Abstraction has 559 states and 569 transitions. [2018-01-30 02:45:14,959 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-30 02:45:14,959 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 569 transitions. [2018-01-30 02:45:14,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2018-01-30 02:45:14,961 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:14,961 INFO L350 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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 02:45:14,961 INFO L371 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:14,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1644177996, now seen corresponding path program 33 times [2018-01-30 02:45:14,962 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:14,962 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:14,962 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:14,962 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:14,962 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:14,976 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2791 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 2689 trivial. 0 not checked. [2018-01-30 02:45:15,326 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:15,326 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 02:45:15,330 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:45:15,342 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:15,346 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:15,351 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:15,357 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:15,363 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:15,370 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:15,371 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:15,373 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2791 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2721 trivial. 0 not checked. [2018-01-30 02:45:15,501 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:15,501 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 20 [2018-01-30 02:45:15,501 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 02:45:15,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 02:45:15,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-01-30 02:45:15,502 INFO L87 Difference]: Start difference. First operand 559 states and 569 transitions. Second operand 20 states. [2018-01-30 02:45:15,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:15,801 INFO L93 Difference]: Finished difference Result 843 states and 862 transitions. [2018-01-30 02:45:15,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 02:45:15,802 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 553 [2018-01-30 02:45:15,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:15,803 INFO L225 Difference]: With dead ends: 843 [2018-01-30 02:45:15,803 INFO L226 Difference]: Without dead ends: 577 [2018-01-30 02:45:15,803 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=403, Invalid=1319, Unknown=0, NotChecked=0, Total=1722 [2018-01-30 02:45:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2018-01-30 02:45:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 571. [2018-01-30 02:45:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2018-01-30 02:45:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 581 transitions. [2018-01-30 02:45:15,807 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 581 transitions. Word has length 553 [2018-01-30 02:45:15,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:15,807 INFO L432 AbstractCegarLoop]: Abstraction has 571 states and 581 transitions. [2018-01-30 02:45:15,807 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 02:45:15,807 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 581 transitions. [2018-01-30 02:45:15,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-01-30 02:45:15,809 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:15,809 INFO L350 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:15,809 INFO L371 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:15,809 INFO L82 PathProgramCache]: Analyzing trace with hash -683784273, now seen corresponding path program 34 times [2018-01-30 02:45:15,809 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:15,809 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:15,810 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:15,810 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:15,810 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:15,822 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2861 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 2759 trivial. 0 not checked. [2018-01-30 02:45:16,204 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:16,204 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 02:45:16,210 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:45:16,286 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:16,290 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2861 backedges. 0 proven. 1919 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2018-01-30 02:45:16,822 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:16,823 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 41] total 54 [2018-01-30 02:45:16,823 INFO L409 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-01-30 02:45:16,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-01-30 02:45:16,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=2360, Unknown=0, NotChecked=0, Total=2862 [2018-01-30 02:45:16,824 INFO L87 Difference]: Start difference. First operand 571 states and 581 transitions. Second operand 54 states. [2018-01-30 02:45:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:17,746 INFO L93 Difference]: Finished difference Result 944 states and 965 transitions. [2018-01-30 02:45:17,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-01-30 02:45:17,747 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 565 [2018-01-30 02:45:17,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:17,749 INFO L225 Difference]: With dead ends: 944 [2018-01-30 02:45:17,749 INFO L226 Difference]: Without dead ends: 599 [2018-01-30 02:45:17,750 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2026 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2240, Invalid=8472, Unknown=0, NotChecked=0, Total=10712 [2018-01-30 02:45:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2018-01-30 02:45:17,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 588. [2018-01-30 02:45:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2018-01-30 02:45:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 598 transitions. [2018-01-30 02:45:17,754 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 598 transitions. Word has length 565 [2018-01-30 02:45:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:17,754 INFO L432 AbstractCegarLoop]: Abstraction has 588 states and 598 transitions. [2018-01-30 02:45:17,754 INFO L433 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-01-30 02:45:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 598 transitions. [2018-01-30 02:45:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-01-30 02:45:17,760 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:17,760 INFO L350 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:17,760 INFO L371 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:17,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1527700647, now seen corresponding path program 35 times [2018-01-30 02:45:17,761 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:17,761 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:17,761 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:17,761 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:17,761 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:17,782 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3110 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 2926 trivial. 0 not checked. [2018-01-30 02:45:18,322 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:18,322 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 02:45:18,339 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:45:18,352 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,360 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,370 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,371 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,373 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,375 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,376 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,378 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,380 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,382 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,385 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,387 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,391 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,396 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,403 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,411 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,420 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,431 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,443 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,458 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,499 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:18,501 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:18,505 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3110 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2970 trivial. 0 not checked. [2018-01-30 02:45:18,666 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:18,666 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 26 [2018-01-30 02:45:18,666 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-30 02:45:18,666 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-30 02:45:18,667 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2018-01-30 02:45:18,667 INFO L87 Difference]: Start difference. First operand 588 states and 598 transitions. Second operand 26 states. [2018-01-30 02:45:19,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:19,095 INFO L93 Difference]: Finished difference Result 671 states and 685 transitions. [2018-01-30 02:45:19,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-30 02:45:19,095 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 582 [2018-01-30 02:45:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:19,096 INFO L225 Difference]: With dead ends: 671 [2018-01-30 02:45:19,096 INFO L226 Difference]: Without dead ends: 606 [2018-01-30 02:45:19,097 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=690, Invalid=2390, Unknown=0, NotChecked=0, Total=3080 [2018-01-30 02:45:19,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2018-01-30 02:45:19,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 600. [2018-01-30 02:45:19,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2018-01-30 02:45:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 610 transitions. [2018-01-30 02:45:19,100 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 610 transitions. Word has length 582 [2018-01-30 02:45:19,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:19,100 INFO L432 AbstractCegarLoop]: Abstraction has 600 states and 610 transitions. [2018-01-30 02:45:19,100 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-30 02:45:19,101 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 610 transitions. [2018-01-30 02:45:19,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2018-01-30 02:45:19,102 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:19,103 INFO L350 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:19,103 INFO L371 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:19,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1942467065, now seen corresponding path program 36 times [2018-01-30 02:45:19,103 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:19,103 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:19,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:19,104 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:19,104 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:19,117 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:19,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 3102 trivial. 0 not checked. [2018-01-30 02:45:19,653 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:19,653 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 02:45:19,675 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:45:19,688 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:19,699 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:19,710 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:19,713 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:19,717 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:19,720 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:19,724 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:19,728 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:19,734 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:19,738 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:19,745 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:19,746 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:19,749 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3204 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 3134 trivial. 0 not checked. [2018-01-30 02:45:19,892 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:19,892 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 20 [2018-01-30 02:45:19,892 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 02:45:19,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 02:45:19,892 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-01-30 02:45:19,892 INFO L87 Difference]: Start difference. First operand 600 states and 610 transitions. Second operand 20 states. [2018-01-30 02:45:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:20,169 INFO L93 Difference]: Finished difference Result 947 states and 967 transitions. [2018-01-30 02:45:20,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 02:45:20,169 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 594 [2018-01-30 02:45:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:20,170 INFO L225 Difference]: With dead ends: 947 [2018-01-30 02:45:20,170 INFO L226 Difference]: Without dead ends: 618 [2018-01-30 02:45:20,171 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=403, Invalid=1319, Unknown=0, NotChecked=0, Total=1722 [2018-01-30 02:45:20,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2018-01-30 02:45:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 612. [2018-01-30 02:45:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2018-01-30 02:45:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 622 transitions. [2018-01-30 02:45:20,174 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 622 transitions. Word has length 594 [2018-01-30 02:45:20,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:20,174 INFO L432 AbstractCegarLoop]: Abstraction has 612 states and 622 transitions. [2018-01-30 02:45:20,174 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 02:45:20,174 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 622 transitions. [2018-01-30 02:45:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2018-01-30 02:45:20,176 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:20,176 INFO L350 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 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 02:45:20,177 INFO L371 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:20,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1421733433, now seen corresponding path program 37 times [2018-01-30 02:45:20,177 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:20,177 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:20,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:20,177 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:20,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:20,192 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3274 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 3134 trivial. 0 not checked. [2018-01-30 02:45:20,693 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:20,693 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 02:45:20,698 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:45:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:20,746 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:21,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3274 backedges. 0 proven. 2130 refuted. 0 times theorem prover too weak. 1144 trivial. 0 not checked. [2018-01-30 02:45:21,333 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:21,333 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 43] total 58 [2018-01-30 02:45:21,333 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-30 02:45:21,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-30 02:45:21,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=562, Invalid=2744, Unknown=0, NotChecked=0, Total=3306 [2018-01-30 02:45:21,334 INFO L87 Difference]: Start difference. First operand 612 states and 622 transitions. Second operand 58 states. [2018-01-30 02:45:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:22,433 INFO L93 Difference]: Finished difference Result 1015 states and 1036 transitions. [2018-01-30 02:45:22,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-01-30 02:45:22,433 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 606 [2018-01-30 02:45:22,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:22,435 INFO L225 Difference]: With dead ends: 1015 [2018-01-30 02:45:22,435 INFO L226 Difference]: Without dead ends: 640 [2018-01-30 02:45:22,436 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2386 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2520, Invalid=9912, Unknown=0, NotChecked=0, Total=12432 [2018-01-30 02:45:22,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2018-01-30 02:45:22,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 629. [2018-01-30 02:45:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2018-01-30 02:45:22,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 639 transitions. [2018-01-30 02:45:22,440 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 639 transitions. Word has length 606 [2018-01-30 02:45:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:22,440 INFO L432 AbstractCegarLoop]: Abstraction has 629 states and 639 transitions. [2018-01-30 02:45:22,440 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-30 02:45:22,440 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 639 transitions. [2018-01-30 02:45:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2018-01-30 02:45:22,442 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:22,442 INFO L350 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 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 02:45:22,442 INFO L371 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:22,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1319152917, now seen corresponding path program 38 times [2018-01-30 02:45:22,442 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:22,442 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:22,443 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:22,443 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:45:22,443 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:22,457 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 3400 trivial. 0 not checked. [2018-01-30 02:45:23,031 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:23,031 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 02:45:23,036 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:45:23,049 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:23,079 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:23,084 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:23,087 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 1188 trivial. 0 not checked. [2018-01-30 02:45:23,700 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:23,700 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 45] total 60 [2018-01-30 02:45:23,700 INFO L409 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-01-30 02:45:23,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-01-30 02:45:23,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=2933, Unknown=0, NotChecked=0, Total=3540 [2018-01-30 02:45:23,701 INFO L87 Difference]: Start difference. First operand 629 states and 639 transitions. Second operand 60 states. [2018-01-30 02:45:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:24,812 INFO L93 Difference]: Finished difference Result 1038 states and 1059 transitions. [2018-01-30 02:45:24,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-01-30 02:45:24,812 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 623 [2018-01-30 02:45:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:24,814 INFO L225 Difference]: With dead ends: 1038 [2018-01-30 02:45:24,814 INFO L226 Difference]: Without dead ends: 657 [2018-01-30 02:45:24,814 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2561 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2735, Invalid=10605, Unknown=0, NotChecked=0, Total=13340 [2018-01-30 02:45:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2018-01-30 02:45:24,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 646. [2018-01-30 02:45:24,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2018-01-30 02:45:24,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 656 transitions. [2018-01-30 02:45:24,818 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 656 transitions. Word has length 623 [2018-01-30 02:45:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:24,819 INFO L432 AbstractCegarLoop]: Abstraction has 646 states and 656 transitions. [2018-01-30 02:45:24,819 INFO L433 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-01-30 02:45:24,819 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 656 transitions. [2018-01-30 02:45:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-01-30 02:45:24,821 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:24,821 INFO L350 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 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 02:45:24,821 INFO L371 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:24,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1149509438, now seen corresponding path program 39 times [2018-01-30 02:45:24,821 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:24,821 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:24,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:24,822 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:24,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:24,837 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3817 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 3633 trivial. 0 not checked. [2018-01-30 02:45:25,463 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:25,463 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 02:45:25,469 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:45:25,482 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:25,486 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:25,491 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:25,497 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:25,503 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:25,510 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:25,518 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:25,519 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:25,522 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3817 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 3715 trivial. 0 not checked. [2018-01-30 02:45:25,687 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:25,687 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 25 [2018-01-30 02:45:25,688 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-30 02:45:25,688 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-30 02:45:25,688 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2018-01-30 02:45:25,688 INFO L87 Difference]: Start difference. First operand 646 states and 656 transitions. Second operand 25 states. [2018-01-30 02:45:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:26,089 INFO L93 Difference]: Finished difference Result 1011 states and 1031 transitions. [2018-01-30 02:45:26,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-30 02:45:26,089 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 640 [2018-01-30 02:45:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:26,090 INFO L225 Difference]: With dead ends: 1011 [2018-01-30 02:45:26,090 INFO L226 Difference]: Without dead ends: 664 [2018-01-30 02:45:26,091 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 02:45:26,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2018-01-30 02:45:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 658. [2018-01-30 02:45:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2018-01-30 02:45:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 668 transitions. [2018-01-30 02:45:26,095 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 668 transitions. Word has length 640 [2018-01-30 02:45:26,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:26,095 INFO L432 AbstractCegarLoop]: Abstraction has 658 states and 668 transitions. [2018-01-30 02:45:26,095 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-30 02:45:26,095 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 668 transitions. [2018-01-30 02:45:26,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 653 [2018-01-30 02:45:26,098 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:26,098 INFO L350 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 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 02:45:26,098 INFO L371 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:26,098 INFO L82 PathProgramCache]: Analyzing trace with hash -558156151, now seen corresponding path program 40 times [2018-01-30 02:45:26,098 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:26,098 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:26,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:26,099 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:26,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:26,113 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 3765 trivial. 0 not checked. [2018-01-30 02:45:26,614 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:26,614 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 02:45:26,620 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:45:26,716 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:26,720 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 0 proven. 2585 refuted. 0 times theorem prover too weak. 1320 trivial. 0 not checked. [2018-01-30 02:45:27,391 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:27,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 47] total 62 [2018-01-30 02:45:27,392 INFO L409 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-01-30 02:45:27,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-01-30 02:45:27,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=654, Invalid=3128, Unknown=0, NotChecked=0, Total=3782 [2018-01-30 02:45:27,392 INFO L87 Difference]: Start difference. First operand 658 states and 668 transitions. Second operand 62 states. [2018-01-30 02:45:28,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:28,670 INFO L93 Difference]: Finished difference Result 1085 states and 1106 transitions. [2018-01-30 02:45:28,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-01-30 02:45:28,670 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 652 [2018-01-30 02:45:28,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:28,672 INFO L225 Difference]: With dead ends: 1085 [2018-01-30 02:45:28,672 INFO L226 Difference]: Without dead ends: 686 [2018-01-30 02:45:28,673 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2742 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2960, Invalid=11320, Unknown=0, NotChecked=0, Total=14280 [2018-01-30 02:45:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-01-30 02:45:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 675. [2018-01-30 02:45:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2018-01-30 02:45:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 685 transitions. [2018-01-30 02:45:28,680 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 685 transitions. Word has length 652 [2018-01-30 02:45:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:28,680 INFO L432 AbstractCegarLoop]: Abstraction has 675 states and 685 transitions. [2018-01-30 02:45:28,680 INFO L433 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-01-30 02:45:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 685 transitions. [2018-01-30 02:45:28,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2018-01-30 02:45:28,683 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:28,683 INFO L350 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 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, 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 02:45:28,683 INFO L371 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash 701130354, now seen corresponding path program 41 times [2018-01-30 02:45:28,683 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:28,683 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:28,684 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:28,684 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:28,684 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:28,699 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4193 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 4091 trivial. 0 not checked. [2018-01-30 02:45:29,234 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:29,234 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 02:45:29,238 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:45:29,250 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,252 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,253 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,254 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,256 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,257 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,259 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,261 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,263 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,265 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,267 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,270 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,273 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,277 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,281 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,287 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,295 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,304 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,316 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,329 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,343 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,359 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,380 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,429 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:29,431 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:29,436 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4193 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 4091 trivial. 0 not checked. [2018-01-30 02:45:29,572 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:29,572 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-01-30 02:45:29,572 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 02:45:29,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 02:45:29,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-30 02:45:29,573 INFO L87 Difference]: Start difference. First operand 675 states and 685 transitions. Second operand 15 states. [2018-01-30 02:45:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:29,816 INFO L93 Difference]: Finished difference Result 998 states and 1016 transitions. [2018-01-30 02:45:29,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 02:45:29,816 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 669 [2018-01-30 02:45:29,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:29,817 INFO L225 Difference]: With dead ends: 998 [2018-01-30 02:45:29,818 INFO L226 Difference]: Without dead ends: 684 [2018-01-30 02:45:29,818 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-30 02:45:29,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2018-01-30 02:45:29,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 681. [2018-01-30 02:45:29,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2018-01-30 02:45:29,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 691 transitions. [2018-01-30 02:45:29,823 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 691 transitions. Word has length 669 [2018-01-30 02:45:29,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:29,823 INFO L432 AbstractCegarLoop]: Abstraction has 681 states and 691 transitions. [2018-01-30 02:45:29,823 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 02:45:29,823 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 691 transitions. [2018-01-30 02:45:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2018-01-30 02:45:29,825 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:29,825 INFO L350 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:29,825 INFO L371 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:29,826 INFO L82 PathProgramCache]: Analyzing trace with hash -893710367, now seen corresponding path program 42 times [2018-01-30 02:45:29,826 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:29,826 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:29,826 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:29,826 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:29,826 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:29,854 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4231 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 4091 trivial. 0 not checked. [2018-01-30 02:45:30,384 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:30,384 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 02:45:30,389 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:45:30,403 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,405 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,408 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,411 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,414 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,417 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,422 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,425 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,430 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,435 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,441 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,447 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,454 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:45:30,456 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:30,459 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4231 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 4129 trivial. 0 not checked. [2018-01-30 02:45:30,616 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:30,617 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 23 [2018-01-30 02:45:30,617 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 02:45:30,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 02:45:30,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-01-30 02:45:30,617 INFO L87 Difference]: Start difference. First operand 681 states and 691 transitions. Second operand 23 states. [2018-01-30 02:45:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:30,953 INFO L93 Difference]: Finished difference Result 974 states and 992 transitions. [2018-01-30 02:45:30,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-30 02:45:30,953 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 675 [2018-01-30 02:45:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:30,954 INFO L225 Difference]: With dead ends: 974 [2018-01-30 02:45:30,954 INFO L226 Difference]: Without dead ends: 699 [2018-01-30 02:45:30,955 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=537, Invalid=1815, Unknown=0, NotChecked=0, Total=2352 [2018-01-30 02:45:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-01-30 02:45:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2018-01-30 02:45:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-01-30 02:45:30,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 703 transitions. [2018-01-30 02:45:30,958 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 703 transitions. Word has length 675 [2018-01-30 02:45:30,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:30,959 INFO L432 AbstractCegarLoop]: Abstraction has 693 states and 703 transitions. [2018-01-30 02:45:30,959 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 02:45:30,959 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 703 transitions. [2018-01-30 02:45:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2018-01-30 02:45:30,961 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:30,961 INFO L350 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 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, 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 02:45:30,961 INFO L371 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:30,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2136123141, now seen corresponding path program 43 times [2018-01-30 02:45:30,962 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:30,962 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:30,962 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:30,962 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:30,962 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:30,975 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4313 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 4079 trivial. 0 not checked. [2018-01-30 02:45:31,647 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:31,647 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 02:45:31,652 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:45:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:31,706 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4313 backedges. 0 proven. 2829 refuted. 0 times theorem prover too weak. 1484 trivial. 0 not checked. [2018-01-30 02:45:32,478 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:32,478 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 49] total 68 [2018-01-30 02:45:32,478 INFO L409 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-01-30 02:45:32,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-01-30 02:45:32,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=3813, Unknown=0, NotChecked=0, Total=4556 [2018-01-30 02:45:32,479 INFO L87 Difference]: Start difference. First operand 693 states and 703 transitions. Second operand 68 states. [2018-01-30 02:45:33,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:33,952 INFO L93 Difference]: Finished difference Result 1144 states and 1165 transitions. [2018-01-30 02:45:33,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-01-30 02:45:33,952 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 687 [2018-01-30 02:45:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:33,954 INFO L225 Difference]: With dead ends: 1144 [2018-01-30 02:45:33,954 INFO L226 Difference]: Without dead ends: 721 [2018-01-30 02:45:33,955 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3393 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3375, Invalid=13917, Unknown=0, NotChecked=0, Total=17292 [2018-01-30 02:45:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2018-01-30 02:45:33,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 710. [2018-01-30 02:45:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 710 states. [2018-01-30 02:45:33,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 720 transitions. [2018-01-30 02:45:33,959 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 720 transitions. Word has length 687 [2018-01-30 02:45:33,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:33,959 INFO L432 AbstractCegarLoop]: Abstraction has 710 states and 720 transitions. [2018-01-30 02:45:33,959 INFO L433 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-01-30 02:45:33,959 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 720 transitions. [2018-01-30 02:45:33,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2018-01-30 02:45:33,962 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:33,962 INFO L350 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 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, 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 02:45:33,962 INFO L371 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:33,962 INFO L82 PathProgramCache]: Analyzing trace with hash 491189531, now seen corresponding path program 44 times [2018-01-30 02:45:33,962 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:33,962 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:33,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:33,963 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:45:33,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:33,980 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 4440 trivial. 0 not checked. [2018-01-30 02:45:34,638 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:34,638 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 02:45:34,643 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:45:34,658 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:34,691 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:34,697 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:34,701 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 3084 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2018-01-30 02:45:35,522 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:35,522 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 51] total 68 [2018-01-30 02:45:35,523 INFO L409 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-01-30 02:45:35,523 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-01-30 02:45:35,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=3783, Unknown=0, NotChecked=0, Total=4556 [2018-01-30 02:45:35,523 INFO L87 Difference]: Start difference. First operand 710 states and 720 transitions. Second operand 68 states. [2018-01-30 02:45:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:37,020 INFO L93 Difference]: Finished difference Result 1167 states and 1188 transitions. [2018-01-30 02:45:37,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-01-30 02:45:37,020 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 704 [2018-01-30 02:45:37,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:37,022 INFO L225 Difference]: With dead ends: 1167 [2018-01-30 02:45:37,022 INFO L226 Difference]: Without dead ends: 738 [2018-01-30 02:45:37,023 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 656 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3359 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3525, Invalid=13767, Unknown=0, NotChecked=0, Total=17292 [2018-01-30 02:45:37,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2018-01-30 02:45:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 727. [2018-01-30 02:45:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2018-01-30 02:45:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 737 transitions. [2018-01-30 02:45:37,027 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 737 transitions. Word has length 704 [2018-01-30 02:45:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:37,027 INFO L432 AbstractCegarLoop]: Abstraction has 727 states and 737 transitions. [2018-01-30 02:45:37,027 INFO L433 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-01-30 02:45:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 737 transitions. [2018-01-30 02:45:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2018-01-30 02:45:37,030 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:37,030 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 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, 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 02:45:37,030 INFO L371 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:37,030 INFO L82 PathProgramCache]: Analyzing trace with hash 830674526, now seen corresponding path program 45 times [2018-01-30 02:45:37,031 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:37,031 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:37,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:37,031 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:37,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:37,048 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4940 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 4756 trivial. 0 not checked. [2018-01-30 02:45:37,676 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:37,676 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 02:45:37,681 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:45:37,696 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:37,700 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:37,705 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:37,711 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:37,717 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:37,723 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:37,731 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:37,741 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:45:37,743 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:37,746 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4940 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 4800 trivial. 0 not checked. [2018-01-30 02:45:37,929 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:37,930 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 26 [2018-01-30 02:45:37,930 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-30 02:45:37,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-30 02:45:37,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2018-01-30 02:45:37,930 INFO L87 Difference]: Start difference. First operand 727 states and 737 transitions. Second operand 26 states. [2018-01-30 02:45:38,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:38,323 INFO L93 Difference]: Finished difference Result 1128 states and 1148 transitions. [2018-01-30 02:45:38,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-30 02:45:38,323 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 721 [2018-01-30 02:45:38,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:38,325 INFO L225 Difference]: With dead ends: 1128 [2018-01-30 02:45:38,325 INFO L226 Difference]: Without dead ends: 745 [2018-01-30 02:45:38,325 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=690, Invalid=2390, Unknown=0, NotChecked=0, Total=3080 [2018-01-30 02:45:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2018-01-30 02:45:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 739. [2018-01-30 02:45:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2018-01-30 02:45:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 749 transitions. [2018-01-30 02:45:38,329 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 749 transitions. Word has length 721 [2018-01-30 02:45:38,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:38,329 INFO L432 AbstractCegarLoop]: Abstraction has 739 states and 749 transitions. [2018-01-30 02:45:38,329 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-30 02:45:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 749 transitions. [2018-01-30 02:45:38,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2018-01-30 02:45:38,332 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:38,332 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:38,332 INFO L371 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:38,332 INFO L82 PathProgramCache]: Analyzing trace with hash -476869758, now seen corresponding path program 46 times [2018-01-30 02:45:38,332 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:38,332 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:38,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:38,333 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:38,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:38,347 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:39,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5034 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 4800 trivial. 0 not checked. [2018-01-30 02:45:39,082 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:39,082 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 02:45:39,087 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:45:39,208 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:39,213 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:45:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5034 backedges. 0 proven. 3350 refuted. 0 times theorem prover too weak. 1684 trivial. 0 not checked. [2018-01-30 02:45:40,099 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:40,099 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 53] total 72 [2018-01-30 02:45:40,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-01-30 02:45:40,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-01-30 02:45:40,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=847, Invalid=4265, Unknown=0, NotChecked=0, Total=5112 [2018-01-30 02:45:40,100 INFO L87 Difference]: Start difference. First operand 739 states and 749 transitions. Second operand 72 states. [2018-01-30 02:45:41,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:45:41,522 INFO L93 Difference]: Finished difference Result 1214 states and 1235 transitions. [2018-01-30 02:45:41,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-01-30 02:45:41,522 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 733 [2018-01-30 02:45:41,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:45:41,524 INFO L225 Difference]: With dead ends: 1214 [2018-01-30 02:45:41,524 INFO L226 Difference]: Without dead ends: 767 [2018-01-30 02:45:41,525 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3817 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3875, Invalid=15585, Unknown=0, NotChecked=0, Total=19460 [2018-01-30 02:45:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2018-01-30 02:45:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 756. [2018-01-30 02:45:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2018-01-30 02:45:41,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 766 transitions. [2018-01-30 02:45:41,529 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 766 transitions. Word has length 733 [2018-01-30 02:45:41,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:45:41,529 INFO L432 AbstractCegarLoop]: Abstraction has 756 states and 766 transitions. [2018-01-30 02:45:41,530 INFO L433 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-01-30 02:45:41,530 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 766 transitions. [2018-01-30 02:45:41,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2018-01-30 02:45:41,532 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:45:41,532 INFO L350 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:41,533 INFO L371 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:45:41,533 INFO L82 PathProgramCache]: Analyzing trace with hash -522010656, now seen corresponding path program 47 times [2018-01-30 02:45:41,533 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:45:41,533 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:45:41,533 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:41,533 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:45:41,533 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:45:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:45:41,548 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:45:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5367 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 5077 trivial. 0 not checked. [2018-01-30 02:45:42,402 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:45:42,402 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 02:45:42,406 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:45:42,420 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,430 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,442 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,449 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,462 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,469 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,482 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,489 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,492 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,494 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,497 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,500 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,503 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,506 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,510 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,515 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,521 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,528 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,537 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,548 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,561 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,575 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,592 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,612 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,635 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,661 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,776 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:45:42,779 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:45:42,785 INFO L270 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-01-30 02:45:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5367 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 5227 trivial. 0 not checked. [2018-01-30 02:45:43,001 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:45:43,001 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17] total 30 [2018-01-30 02:45:43,001 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-30 02:45:43,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-30 02:45:43,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2018-01-30 02:45:43,002 INFO L87 Difference]: Start difference. First operand 756 states and 766 transitions. Second operand 30 states. [2018-01-30 02:45:43,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 02:45:43,002 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 02:45:43,006 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 02:45:43,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:45:43 BasicIcfg [2018-01-30 02:45:43,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 02:45:43,006 INFO L168 Benchmark]: Toolchain (without parser) took 65599.98 ms. Allocated memory was 149.9 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 114.8 MB in the beginning and 451.3 MB in the end (delta: -336.5 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. [2018-01-30 02:45:43,007 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 149.9 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 02:45:43,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 112.59 ms. Allocated memory is still 149.9 MB. Free memory was 114.8 MB in the beginning and 105.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 5.3 GB. [2018-01-30 02:45:43,007 INFO L168 Benchmark]: Boogie Preprocessor took 18.56 ms. Allocated memory is still 149.9 MB. Free memory was 105.9 MB in the beginning and 104.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. [2018-01-30 02:45:43,008 INFO L168 Benchmark]: RCFGBuilder took 429.39 ms. Allocated memory is still 149.9 MB. Free memory was 104.5 MB in the beginning and 84.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 5.3 GB. [2018-01-30 02:45:43,008 INFO L168 Benchmark]: IcfgTransformer took 13.96 ms. Allocated memory is still 149.9 MB. Free memory was 83.7 MB in the beginning and 82.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-01-30 02:45:43,008 INFO L168 Benchmark]: TraceAbstraction took 65023.17 ms. Allocated memory was 149.9 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 82.4 MB in the beginning and 451.3 MB in the end (delta: -368.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-01-30 02:45:43,009 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 149.9 MB. Free memory is still 119.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 112.59 ms. Allocated memory is still 149.9 MB. Free memory was 114.8 MB in the beginning and 105.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 18.56 ms. Allocated memory is still 149.9 MB. Free memory was 105.9 MB in the beginning and 104.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 5.3 GB. * RCFGBuilder took 429.39 ms. Allocated memory is still 149.9 MB. Free memory was 104.5 MB in the beginning and 84.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 5.3 GB. * IcfgTransformer took 13.96 ms. Allocated memory is still 149.9 MB. Free memory was 83.7 MB in the beginning and 82.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 65023.17 ms. Allocated memory was 149.9 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 82.4 MB in the beginning and 451.3 MB in the end (delta: -368.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (756states) and interpolant automaton (currently 2 states, 30 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 102 locations, 1 error locations. TIMEOUT Result, 64.9s OverallTime, 50 OverallIterations, 27 TraceHistogramMax, 26.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3954 SDtfs, 5773 SDslu, 46368 SDs, 0 SdLazy, 25550 SolverSat, 1518 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21605 GetRequests, 19206 SyntacticMatches, 0 SemanticMatches, 2399 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36534 ImplicationChecksByTransitivity, 32.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=756occurred in iteration=49, 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, 49 MinimizatonAttempts, 499 StatesRemovedByMinimization, 48 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 30.4s InterpolantComputationTime, 39958 NumberOfCodeBlocks, 37730 NumberOfCodeBlocksAsserted, 313 NumberOfCheckSat, 39861 ConstructedInterpolants, 0 QuantifiedInterpolants, 25900625 SizeOfPredicates, 873 NumberOfNonLiveVariables, 23944 ConjunctsInSsa, 920 ConjunctsInUnsatCore, 97 InterpolantComputations, 3 PerfectInterpolantSequences, 145450/179450 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_copy8_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_02-45-43-015.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_copy8_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_02-45-43-015.csv Completed graceful shutdown