java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-examples/standard_copy1_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-29 22:43:06,238 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-29 22:43:06,239 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-29 22:43:06,248 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-29 22:43:06,248 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-29 22:43:06,249 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-29 22:43:06,250 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-29 22:43:06,250 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-29 22:43:06,252 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-29 22:43:06,252 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-29 22:43:06,252 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-29 22:43:06,253 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-29 22:43:06,253 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-29 22:43:06,254 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-29 22:43:06,254 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-29 22:43:06,255 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-29 22:43:06,257 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-29 22:43:06,258 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-29 22:43:06,258 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-29 22:43:06,259 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-29 22:43:06,260 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-29 22:43:06,263 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-29 22:43:06,263 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-29 22:43:06,263 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 [2018-01-29 22:43:06,268 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-29 22:43:06,269 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-29 22:43:06,269 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-29 22:43:06,269 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-29 22:43:06,269 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-29 22:43:06,269 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-29 22:43:06,269 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-29 22:43:06,270 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-29 22:43:06,270 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-29 22:43:06,270 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-29 22:43:06,270 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-29 22:43:06,270 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-29 22:43:06,270 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-29 22:43:06,270 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-29 22:43:06,270 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-29 22:43:06,270 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-29 22:43:06,270 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-29 22:43:06,270 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-29 22:43:06,271 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-29 22:43:06,271 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-29 22:43:06,271 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-29 22:43:06,271 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-29 22:43:06,271 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-29 22:43:06,271 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-29 22:43:06,271 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-29 22:43:06,271 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-29 22:43:06,271 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-29 22:43:06,271 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-29 22:43:06,271 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-29 22:43:06,272 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-29 22:43:06,272 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-29 22:43:06,272 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-29 22:43:06,272 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-29 22:43:06,272 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-29 22:43:06,291 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-29 22:43:06,297 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-29 22:43:06,299 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-29 22:43:06,300 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-29 22:43:06,300 INFO L276 PluginConnector]: CDTParser initialized [2018-01-29 22:43:06,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy1_false-unreach-call_ground.i [2018-01-29 22:43:06,363 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-29 22:43:06,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-29 22:43:06,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-29 22:43:06,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-29 22:43:06,368 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-29 22:43:06,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:43:06" (1/1) ... [2018-01-29 22:43:06,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59eed46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:43:06, skipping insertion in model container [2018-01-29 22:43:06,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:43:06" (1/1) ... [2018-01-29 22:43:06,379 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 22:43:06,388 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 22:43:06,455 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 22:43:06,463 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 22:43:06,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:43:06 WrapperNode [2018-01-29 22:43:06,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-29 22:43:06,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-29 22:43:06,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-29 22:43:06,467 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-29 22:43:06,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:43:06" (1/1) ... [2018-01-29 22:43:06,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:43:06" (1/1) ... [2018-01-29 22:43:06,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:43:06" (1/1) ... [2018-01-29 22:43:06,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:43:06" (1/1) ... [2018-01-29 22:43:06,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:43:06" (1/1) ... [2018-01-29 22:43:06,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:43:06" (1/1) ... [2018-01-29 22:43:06,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:43:06" (1/1) ... [2018-01-29 22:43:06,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-29 22:43:06,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-29 22:43:06,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-29 22:43:06,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-29 22:43:06,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:43:06" (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 [2018-01-29 22:43:06,521 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-29 22:43:06,522 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-29 22:43:06,522 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-29 22:43:06,522 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-29 22:43:06,522 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-29 22:43:06,522 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-29 22:43:06,522 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-29 22:43:06,522 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-29 22:43:06,522 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-29 22:43:06,522 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-29 22:43:06,874 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-29 22:43:06,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:43:06 BoogieIcfgContainer [2018-01-29 22:43:06,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-29 22:43:06,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-29 22:43:06,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-29 22:43:06,877 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-29 22:43:06,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:43:06" (1/3) ... [2018-01-29 22:43:06,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6192f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:43:06, skipping insertion in model container [2018-01-29 22:43:06,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:43:06" (2/3) ... [2018-01-29 22:43:06,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6192f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:43:06, skipping insertion in model container [2018-01-29 22:43:06,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:43:06" (3/3) ... [2018-01-29 22:43:06,879 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_copy1_false-unreach-call_ground.i [2018-01-29 22:43:06,884 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-29 22:43:06,888 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-29 22:43:06,912 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-29 22:43:06,913 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-29 22:43:06,913 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-29 22:43:06,913 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-29 22:43:06,913 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-29 22:43:06,913 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-29 22:43:06,913 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-29 22:43:06,913 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-29 22:43:06,914 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-29 22:43:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-01-29 22:43:06,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-29 22:43:06,926 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:06,927 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] [2018-01-29 22:43:06,927 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:06,929 INFO L82 PathProgramCache]: Analyzing trace with hash 994163166, now seen corresponding path program 1 times [2018-01-29 22:43:06,931 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:06,931 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:06,959 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:06,959 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:06,959 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:06,979 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 22:43:06,995 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 22:43:06,996 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-29 22:43:06,997 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-29 22:43:07,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-29 22:43:07,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-29 22:43:07,005 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2018-01-29 22:43:07,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:07,018 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2018-01-29 22:43:07,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-29 22:43:07,019 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-29 22:43:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:07,025 INFO L225 Difference]: With dead ends: 73 [2018-01-29 22:43:07,025 INFO L226 Difference]: Without dead ends: 41 [2018-01-29 22:43:07,027 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 [2018-01-29 22:43:07,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-01-29 22:43:07,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-01-29 22:43:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-29 22:43:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-01-29 22:43:07,048 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 20 [2018-01-29 22:43:07,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:07,048 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-01-29 22:43:07,049 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-29 22:43:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-01-29 22:43:07,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-29 22:43:07,049 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:07,049 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:07,049 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:07,050 INFO L82 PathProgramCache]: Analyzing trace with hash -878710541, now seen corresponding path program 1 times [2018-01-29 22:43:07,050 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:07,050 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:07,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:07,051 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:07,051 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:07,056 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 22:43:07,082 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 22:43:07,082 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-29 22:43:07,083 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-29 22:43:07,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-29 22:43:07,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-29 22:43:07,084 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 3 states. [2018-01-29 22:43:07,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:07,148 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2018-01-29 22:43:07,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-29 22:43:07,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-29 22:43:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:07,153 INFO L225 Difference]: With dead ends: 73 [2018-01-29 22:43:07,153 INFO L226 Difference]: Without dead ends: 51 [2018-01-29 22:43:07,154 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 [2018-01-29 22:43:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-29 22:43:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2018-01-29 22:43:07,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-29 22:43:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-01-29 22:43:07,159 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 22 [2018-01-29 22:43:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:07,159 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-01-29 22:43:07,159 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-29 22:43:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-01-29 22:43:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-29 22:43:07,160 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:07,160 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] [2018-01-29 22:43:07,160 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:07,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1208640674, now seen corresponding path program 1 times [2018-01-29 22:43:07,160 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:07,160 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:07,161 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:07,161 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:07,161 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:07,172 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-29 22:43:07,265 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 22:43:07,265 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-29 22:43:07,266 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-29 22:43:07,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-29 22:43:07,266 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-29 22:43:07,266 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 3 states. [2018-01-29 22:43:07,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:07,305 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2018-01-29 22:43:07,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-29 22:43:07,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-01-29 22:43:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:07,307 INFO L225 Difference]: With dead ends: 62 [2018-01-29 22:43:07,307 INFO L226 Difference]: Without dead ends: 48 [2018-01-29 22:43:07,307 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 [2018-01-29 22:43:07,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-29 22:43:07,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-01-29 22:43:07,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-01-29 22:43:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-01-29 22:43:07,310 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 33 [2018-01-29 22:43:07,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:07,310 INFO L432 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-01-29 22:43:07,310 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-29 22:43:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-01-29 22:43:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-29 22:43:07,311 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:07,311 INFO L350 BasicCegarLoop]: trace histogram [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] [2018-01-29 22:43:07,311 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:07,311 INFO L82 PathProgramCache]: Analyzing trace with hash -445705242, now seen corresponding path program 1 times [2018-01-29 22:43:07,311 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:07,311 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:07,312 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:07,312 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:07,312 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:07,323 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-29 22:43:07,419 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:07,419 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 22:43:07,425 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:07,445 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-29 22:43:07,475 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:07,475 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-29 22:43:07,476 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-29 22:43:07,476 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-29 22:43:07,476 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-29 22:43:07,476 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2018-01-29 22:43:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:07,631 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2018-01-29 22:43:07,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-29 22:43:07,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2018-01-29 22:43:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:07,632 INFO L225 Difference]: With dead ends: 88 [2018-01-29 22:43:07,632 INFO L226 Difference]: Without dead ends: 64 [2018-01-29 22:43:07,632 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-29 22:43:07,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-01-29 22:43:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2018-01-29 22:43:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-29 22:43:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-01-29 22:43:07,637 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 39 [2018-01-29 22:43:07,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:07,637 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-01-29 22:43:07,637 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-29 22:43:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-01-29 22:43:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-29 22:43:07,638 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:07,638 INFO L350 BasicCegarLoop]: trace histogram [3, 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] [2018-01-29 22:43:07,638 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:07,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1763955493, now seen corresponding path program 2 times [2018-01-29 22:43:07,638 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:07,638 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:07,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:07,639 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:07,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:07,647 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-29 22:43:07,753 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:07,753 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 [2018-01-29 22:43:07,763 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 22:43:07,770 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:07,779 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:07,793 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:07,795 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-29 22:43:07,899 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:07,899 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-29 22:43:07,899 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-29 22:43:07,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-29 22:43:07,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-29 22:43:07,900 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 10 states. [2018-01-29 22:43:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:08,233 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2018-01-29 22:43:08,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-29 22:43:08,234 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2018-01-29 22:43:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:08,234 INFO L225 Difference]: With dead ends: 108 [2018-01-29 22:43:08,235 INFO L226 Difference]: Without dead ends: 84 [2018-01-29 22:43:08,235 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-29 22:43:08,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-29 22:43:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2018-01-29 22:43:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-29 22:43:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2018-01-29 22:43:08,239 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 50 [2018-01-29 22:43:08,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:08,239 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2018-01-29 22:43:08,239 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-29 22:43:08,239 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2018-01-29 22:43:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-29 22:43:08,240 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:08,240 INFO L350 BasicCegarLoop]: trace histogram [4, 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] [2018-01-29 22:43:08,240 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:08,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1054024526, now seen corresponding path program 3 times [2018-01-29 22:43:08,240 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:08,240 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:08,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:08,241 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:08,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:08,252 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-29 22:43:08,326 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:08,326 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-29 22:43:08,330 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 22:43:08,335 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:08,338 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:08,340 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:08,340 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:08,342 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-01-29 22:43:08,363 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:08,363 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-01-29 22:43:08,364 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-29 22:43:08,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-29 22:43:08,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-29 22:43:08,364 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 7 states. [2018-01-29 22:43:08,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:08,436 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2018-01-29 22:43:08,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-29 22:43:08,436 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2018-01-29 22:43:08,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:08,436 INFO L225 Difference]: With dead ends: 96 [2018-01-29 22:43:08,437 INFO L226 Difference]: Without dead ends: 82 [2018-01-29 22:43:08,438 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-29 22:43:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-01-29 22:43:08,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2018-01-29 22:43:08,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-01-29 22:43:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2018-01-29 22:43:08,441 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 67 [2018-01-29 22:43:08,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:08,441 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2018-01-29 22:43:08,441 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-29 22:43:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2018-01-29 22:43:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-01-29 22:43:08,442 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:08,442 INFO L350 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-01-29 22:43:08,442 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:08,442 INFO L82 PathProgramCache]: Analyzing trace with hash 329443286, now seen corresponding path program 4 times [2018-01-29 22:43:08,442 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:08,443 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:08,443 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:08,443 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:08,443 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:08,454 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-29 22:43:08,569 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:08,569 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-29 22:43:08,577 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 22:43:08,587 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:08,589 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:08,598 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-29 22:43:08,615 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:08,616 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-29 22:43:08,616 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-29 22:43:08,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-29 22:43:08,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-29 22:43:08,616 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand 9 states. [2018-01-29 22:43:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:08,724 INFO L93 Difference]: Finished difference Result 134 states and 140 transitions. [2018-01-29 22:43:08,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-29 22:43:08,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2018-01-29 22:43:08,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:08,737 INFO L225 Difference]: With dead ends: 134 [2018-01-29 22:43:08,737 INFO L226 Difference]: Without dead ends: 98 [2018-01-29 22:43:08,737 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-29 22:43:08,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-01-29 22:43:08,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2018-01-29 22:43:08,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-29 22:43:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2018-01-29 22:43:08,741 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 73 [2018-01-29 22:43:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:08,741 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2018-01-29 22:43:08,741 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-29 22:43:08,741 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2018-01-29 22:43:08,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-01-29 22:43:08,742 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:08,742 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-01-29 22:43:08,742 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:08,742 INFO L82 PathProgramCache]: Analyzing trace with hash -382106741, now seen corresponding path program 5 times [2018-01-29 22:43:08,742 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:08,742 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:08,743 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:08,743 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:08,743 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:08,768 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-01-29 22:43:08,885 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:08,885 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 [2018-01-29 22:43:08,899 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 22:43:08,904 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:08,911 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:08,913 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:08,916 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:08,924 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:08,924 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:08,926 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-01-29 22:43:09,021 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:09,021 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2018-01-29 22:43:09,022 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-29 22:43:09,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-29 22:43:09,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-01-29 22:43:09,022 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 18 states. [2018-01-29 22:43:09,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:09,332 INFO L93 Difference]: Finished difference Result 154 states and 161 transitions. [2018-01-29 22:43:09,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-29 22:43:09,333 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 84 [2018-01-29 22:43:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:09,335 INFO L225 Difference]: With dead ends: 154 [2018-01-29 22:43:09,335 INFO L226 Difference]: Without dead ends: 118 [2018-01-29 22:43:09,336 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2018-01-29 22:43:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-29 22:43:09,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2018-01-29 22:43:09,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-01-29 22:43:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2018-01-29 22:43:09,341 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 84 [2018-01-29 22:43:09,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:09,341 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2018-01-29 22:43:09,341 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-29 22:43:09,341 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2018-01-29 22:43:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-01-29 22:43:09,342 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:09,342 INFO L350 BasicCegarLoop]: trace histogram [6, 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] [2018-01-29 22:43:09,343 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:09,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1658129214, now seen corresponding path program 6 times [2018-01-29 22:43:09,344 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:09,344 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:09,344 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:09,344 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:09,344 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:09,354 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 22:43:09,548 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:09,548 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 [2018-01-29 22:43:09,556 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 22:43:09,564 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:09,566 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:09,568 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:09,569 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:09,571 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:09,573 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:09,574 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:09,576 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 22:43:09,605 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:09,605 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-01-29 22:43:09,605 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-29 22:43:09,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-29 22:43:09,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-29 22:43:09,606 INFO L87 Difference]: Start difference. First operand 107 states and 110 transitions. Second operand 13 states. [2018-01-29 22:43:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:09,739 INFO L93 Difference]: Finished difference Result 168 states and 174 transitions. [2018-01-29 22:43:09,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-29 22:43:09,739 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 101 [2018-01-29 22:43:09,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:09,740 INFO L225 Difference]: With dead ends: 168 [2018-01-29 22:43:09,740 INFO L226 Difference]: Without dead ends: 126 [2018-01-29 22:43:09,741 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-29 22:43:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-29 22:43:09,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 118. [2018-01-29 22:43:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-29 22:43:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 121 transitions. [2018-01-29 22:43:09,744 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 121 transitions. Word has length 101 [2018-01-29 22:43:09,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:09,744 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 121 transitions. [2018-01-29 22:43:09,745 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-29 22:43:09,745 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 121 transitions. [2018-01-29 22:43:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-29 22:43:09,745 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:09,746 INFO L350 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2018-01-29 22:43:09,746 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:09,746 INFO L82 PathProgramCache]: Analyzing trace with hash 809612659, now seen corresponding path program 7 times [2018-01-29 22:43:09,746 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:09,746 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:09,746 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:09,747 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:09,747 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:09,756 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 22:43:09,937 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:09,938 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 [2018-01-29 22:43:09,943 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:09,991 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 22:43:10,036 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:10,037 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-01-29 22:43:10,037 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-29 22:43:10,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-29 22:43:10,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-01-29 22:43:10,037 INFO L87 Difference]: Start difference. First operand 118 states and 121 transitions. Second operand 15 states. [2018-01-29 22:43:10,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:10,424 INFO L93 Difference]: Finished difference Result 179 states and 185 transitions. [2018-01-29 22:43:10,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-29 22:43:10,426 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 112 [2018-01-29 22:43:10,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:10,426 INFO L225 Difference]: With dead ends: 179 [2018-01-29 22:43:10,426 INFO L226 Difference]: Without dead ends: 137 [2018-01-29 22:43:10,427 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2018-01-29 22:43:10,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-01-29 22:43:10,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 129. [2018-01-29 22:43:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-01-29 22:43:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 132 transitions. [2018-01-29 22:43:10,432 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 132 transitions. Word has length 112 [2018-01-29 22:43:10,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:10,432 INFO L432 AbstractCegarLoop]: Abstraction has 129 states and 132 transitions. [2018-01-29 22:43:10,432 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-29 22:43:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 132 transitions. [2018-01-29 22:43:10,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-01-29 22:43:10,433 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:10,433 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2018-01-29 22:43:10,433 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:10,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1762785250, now seen corresponding path program 8 times [2018-01-29 22:43:10,434 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:10,434 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:10,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:10,434 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:10,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:10,446 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 22:43:10,582 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:10,582 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 [2018-01-29 22:43:10,589 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 22:43:10,594 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:10,600 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:10,602 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:10,605 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-01-29 22:43:10,637 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:10,637 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-01-29 22:43:10,638 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-29 22:43:10,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-29 22:43:10,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-29 22:43:10,638 INFO L87 Difference]: Start difference. First operand 129 states and 132 transitions. Second operand 17 states. [2018-01-29 22:43:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:10,774 INFO L93 Difference]: Finished difference Result 190 states and 196 transitions. [2018-01-29 22:43:10,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-29 22:43:10,775 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 123 [2018-01-29 22:43:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:10,776 INFO L225 Difference]: With dead ends: 190 [2018-01-29 22:43:10,776 INFO L226 Difference]: Without dead ends: 148 [2018-01-29 22:43:10,777 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-29 22:43:10,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-01-29 22:43:10,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 140. [2018-01-29 22:43:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-29 22:43:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2018-01-29 22:43:10,780 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 123 [2018-01-29 22:43:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:10,780 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2018-01-29 22:43:10,780 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-29 22:43:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2018-01-29 22:43:10,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-29 22:43:10,781 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:10,782 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2018-01-29 22:43:10,782 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:10,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1755059053, now seen corresponding path program 9 times [2018-01-29 22:43:10,782 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:10,782 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:10,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:10,783 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:10,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:10,795 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-01-29 22:43:10,941 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:10,941 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 [2018-01-29 22:43:10,946 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 22:43:10,951 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:10,952 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:10,954 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:10,956 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:10,958 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:10,958 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:10,960 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-01-29 22:43:10,991 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:10,991 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-01-29 22:43:10,991 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-29 22:43:10,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-29 22:43:10,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-01-29 22:43:10,991 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand 11 states. [2018-01-29 22:43:11,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:11,053 INFO L93 Difference]: Finished difference Result 163 states and 168 transitions. [2018-01-29 22:43:11,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-29 22:43:11,053 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2018-01-29 22:43:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:11,054 INFO L225 Difference]: With dead ends: 163 [2018-01-29 22:43:11,054 INFO L226 Difference]: Without dead ends: 149 [2018-01-29 22:43:11,054 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2018-01-29 22:43:11,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-29 22:43:11,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2018-01-29 22:43:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-29 22:43:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2018-01-29 22:43:11,057 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 134 [2018-01-29 22:43:11,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:11,057 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2018-01-29 22:43:11,057 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-29 22:43:11,057 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2018-01-29 22:43:11,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-01-29 22:43:11,058 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:11,058 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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] [2018-01-29 22:43:11,058 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:11,058 INFO L82 PathProgramCache]: Analyzing trace with hash -960042661, now seen corresponding path program 10 times [2018-01-29 22:43:11,058 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:11,058 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:11,059 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:11,059 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:11,059 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:11,067 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2018-01-29 22:43:11,182 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:11,183 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 [2018-01-29 22:43:11,187 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 22:43:11,221 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:11,223 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-01-29 22:43:11,443 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:11,443 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 30 [2018-01-29 22:43:11,444 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-29 22:43:11,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-29 22:43:11,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2018-01-29 22:43:11,444 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand 30 states. [2018-01-29 22:43:11,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:11,875 INFO L93 Difference]: Finished difference Result 222 states and 229 transitions. [2018-01-29 22:43:11,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-29 22:43:11,877 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 140 [2018-01-29 22:43:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:11,878 INFO L225 Difference]: With dead ends: 222 [2018-01-29 22:43:11,878 INFO L226 Difference]: Without dead ends: 174 [2018-01-29 22:43:11,879 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=580, Invalid=2500, Unknown=0, NotChecked=0, Total=3080 [2018-01-29 22:43:11,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-29 22:43:11,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 163. [2018-01-29 22:43:11,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-01-29 22:43:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 166 transitions. [2018-01-29 22:43:11,881 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 166 transitions. Word has length 140 [2018-01-29 22:43:11,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:11,882 INFO L432 AbstractCegarLoop]: Abstraction has 163 states and 166 transitions. [2018-01-29 22:43:11,882 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-29 22:43:11,882 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 166 transitions. [2018-01-29 22:43:11,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-01-29 22:43:11,883 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:11,883 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2018-01-29 22:43:11,883 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:11,883 INFO L82 PathProgramCache]: Analyzing trace with hash 918231054, now seen corresponding path program 11 times [2018-01-29 22:43:11,883 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:11,883 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:11,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:11,884 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:11,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:11,893 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-29 22:43:12,311 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:12,311 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 [2018-01-29 22:43:12,316 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 22:43:12,339 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:12,340 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:12,347 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:12,354 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:12,364 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:12,374 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:12,377 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:12,379 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:12,382 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:12,385 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:12,385 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:12,387 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-29 22:43:12,423 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:12,423 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-01-29 22:43:12,424 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-29 22:43:12,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-29 22:43:12,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-29 22:43:12,424 INFO L87 Difference]: Start difference. First operand 163 states and 166 transitions. Second operand 21 states. [2018-01-29 22:43:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:12,671 INFO L93 Difference]: Finished difference Result 236 states and 242 transitions. [2018-01-29 22:43:12,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-29 22:43:12,671 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 157 [2018-01-29 22:43:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:12,672 INFO L225 Difference]: With dead ends: 236 [2018-01-29 22:43:12,672 INFO L226 Difference]: Without dead ends: 182 [2018-01-29 22:43:12,673 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-29 22:43:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-01-29 22:43:12,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2018-01-29 22:43:12,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-01-29 22:43:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 177 transitions. [2018-01-29 22:43:12,675 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 177 transitions. Word has length 157 [2018-01-29 22:43:12,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:12,675 INFO L432 AbstractCegarLoop]: Abstraction has 174 states and 177 transitions. [2018-01-29 22:43:12,675 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-29 22:43:12,675 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 177 transitions. [2018-01-29 22:43:12,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-01-29 22:43:12,676 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:12,676 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2018-01-29 22:43:12,676 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:12,676 INFO L82 PathProgramCache]: Analyzing trace with hash -439902397, now seen corresponding path program 12 times [2018-01-29 22:43:12,677 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:12,677 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:12,677 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:12,677 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:12,677 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:12,686 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 515 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-29 22:43:12,897 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:12,898 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 [2018-01-29 22:43:12,902 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 22:43:12,908 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:12,909 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:12,911 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:12,912 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:12,914 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:12,915 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:12,917 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:12,919 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:12,921 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:12,923 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:12,925 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:12,926 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:12,928 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 0 proven. 515 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-29 22:43:12,967 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:12,967 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-01-29 22:43:12,967 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-29 22:43:12,967 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-29 22:43:12,967 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-29 22:43:12,968 INFO L87 Difference]: Start difference. First operand 174 states and 177 transitions. Second operand 23 states. [2018-01-29 22:43:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:13,276 INFO L93 Difference]: Finished difference Result 247 states and 253 transitions. [2018-01-29 22:43:13,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-29 22:43:13,277 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 168 [2018-01-29 22:43:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:13,277 INFO L225 Difference]: With dead ends: 247 [2018-01-29 22:43:13,277 INFO L226 Difference]: Without dead ends: 193 [2018-01-29 22:43:13,278 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=603, Invalid=1203, Unknown=0, NotChecked=0, Total=1806 [2018-01-29 22:43:13,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-01-29 22:43:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2018-01-29 22:43:13,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-29 22:43:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 188 transitions. [2018-01-29 22:43:13,281 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 188 transitions. Word has length 168 [2018-01-29 22:43:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:13,281 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 188 transitions. [2018-01-29 22:43:13,281 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-29 22:43:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 188 transitions. [2018-01-29 22:43:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-01-29 22:43:13,282 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:13,282 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2018-01-29 22:43:13,282 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:13,282 INFO L82 PathProgramCache]: Analyzing trace with hash -583535378, now seen corresponding path program 13 times [2018-01-29 22:43:13,282 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:13,282 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:13,283 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:13,283 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:13,283 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:13,291 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2018-01-29 22:43:13,444 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:13,444 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 [2018-01-29 22:43:13,453 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:13,478 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-29 22:43:13,832 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:13,832 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25] total 38 [2018-01-29 22:43:13,832 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-29 22:43:13,832 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-29 22:43:13,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2018-01-29 22:43:13,833 INFO L87 Difference]: Start difference. First operand 185 states and 188 transitions. Second operand 38 states. [2018-01-29 22:43:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:14,418 INFO L93 Difference]: Finished difference Result 267 states and 274 transitions. [2018-01-29 22:43:14,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-01-29 22:43:14,422 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 179 [2018-01-29 22:43:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:14,422 INFO L225 Difference]: With dead ends: 267 [2018-01-29 22:43:14,423 INFO L226 Difference]: Without dead ends: 213 [2018-01-29 22:43:14,424 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=960, Invalid=4152, Unknown=0, NotChecked=0, Total=5112 [2018-01-29 22:43:14,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-01-29 22:43:14,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 202. [2018-01-29 22:43:14,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-01-29 22:43:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 205 transitions. [2018-01-29 22:43:14,426 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 205 transitions. Word has length 179 [2018-01-29 22:43:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:14,426 INFO L432 AbstractCegarLoop]: Abstraction has 202 states and 205 transitions. [2018-01-29 22:43:14,426 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-29 22:43:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 205 transitions. [2018-01-29 22:43:14,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-01-29 22:43:14,427 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:14,427 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2018-01-29 22:43:14,427 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:14,427 INFO L82 PathProgramCache]: Analyzing trace with hash -245213397, now seen corresponding path program 14 times [2018-01-29 22:43:14,427 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:14,427 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:14,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:14,428 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:14,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:14,437 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-01-29 22:43:14,892 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:14,892 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 22:43:14,897 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 22:43:14,903 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:14,926 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:14,936 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:14,938 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-01-29 22:43:14,988 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:14,988 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-01-29 22:43:14,988 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-29 22:43:14,988 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-29 22:43:14,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-01-29 22:43:14,989 INFO L87 Difference]: Start difference. First operand 202 states and 205 transitions. Second operand 27 states. [2018-01-29 22:43:15,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:15,318 INFO L93 Difference]: Finished difference Result 281 states and 287 transitions. [2018-01-29 22:43:15,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-29 22:43:15,323 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 196 [2018-01-29 22:43:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:15,324 INFO L225 Difference]: With dead ends: 281 [2018-01-29 22:43:15,324 INFO L226 Difference]: Without dead ends: 221 [2018-01-29 22:43:15,325 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=843, Invalid=1707, Unknown=0, NotChecked=0, Total=2550 [2018-01-29 22:43:15,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-29 22:43:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 213. [2018-01-29 22:43:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-01-29 22:43:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 216 transitions. [2018-01-29 22:43:15,328 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 216 transitions. Word has length 196 [2018-01-29 22:43:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:15,328 INFO L432 AbstractCegarLoop]: Abstraction has 213 states and 216 transitions. [2018-01-29 22:43:15,328 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-29 22:43:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 216 transitions. [2018-01-29 22:43:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-01-29 22:43:15,329 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:15,329 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 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] [2018-01-29 22:43:15,329 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:15,329 INFO L82 PathProgramCache]: Analyzing trace with hash -2146513322, now seen corresponding path program 15 times [2018-01-29 22:43:15,329 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:15,329 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:15,330 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:15,330 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:15,330 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:15,339 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked. [2018-01-29 22:43:15,721 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:15,721 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 [2018-01-29 22:43:15,726 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 22:43:15,732 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:15,740 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:15,750 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:15,758 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:15,765 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:15,769 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:15,771 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:15,773 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:15,773 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:15,775 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked. [2018-01-29 22:43:15,808 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:15,808 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-01-29 22:43:15,809 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-29 22:43:15,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-29 22:43:15,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-29 22:43:15,809 INFO L87 Difference]: Start difference. First operand 213 states and 216 transitions. Second operand 17 states. [2018-01-29 22:43:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:15,913 INFO L93 Difference]: Finished difference Result 236 states and 241 transitions. [2018-01-29 22:43:15,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-29 22:43:15,914 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 207 [2018-01-29 22:43:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:15,914 INFO L225 Difference]: With dead ends: 236 [2018-01-29 22:43:15,914 INFO L226 Difference]: Without dead ends: 222 [2018-01-29 22:43:15,915 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-29 22:43:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-29 22:43:15,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2018-01-29 22:43:15,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-29 22:43:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 222 transitions. [2018-01-29 22:43:15,917 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 222 transitions. Word has length 207 [2018-01-29 22:43:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:15,918 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 222 transitions. [2018-01-29 22:43:15,918 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-29 22:43:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 222 transitions. [2018-01-29 22:43:15,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-01-29 22:43:15,918 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:15,918 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:15,918 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:15,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1385943842, now seen corresponding path program 16 times [2018-01-29 22:43:15,919 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:15,919 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:15,919 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:15,919 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:15,919 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:15,928 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:16,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked. [2018-01-29 22:43:16,124 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:16,124 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 22:43:16,128 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 22:43:16,154 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:16,156 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1068 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-01-29 22:43:16,487 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:16,487 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 29] total 46 [2018-01-29 22:43:16,487 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-29 22:43:16,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-29 22:43:16,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1748, Unknown=0, NotChecked=0, Total=2070 [2018-01-29 22:43:16,488 INFO L87 Difference]: Start difference. First operand 219 states and 222 transitions. Second operand 46 states. [2018-01-29 22:43:17,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:17,262 INFO L93 Difference]: Finished difference Result 313 states and 320 transitions. [2018-01-29 22:43:17,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-29 22:43:17,265 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 213 [2018-01-29 22:43:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:17,265 INFO L225 Difference]: With dead ends: 313 [2018-01-29 22:43:17,265 INFO L226 Difference]: Without dead ends: 247 [2018-01-29 22:43:17,267 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1380, Invalid=6276, Unknown=0, NotChecked=0, Total=7656 [2018-01-29 22:43:17,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-01-29 22:43:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 236. [2018-01-29 22:43:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-01-29 22:43:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 239 transitions. [2018-01-29 22:43:17,269 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 239 transitions. Word has length 213 [2018-01-29 22:43:17,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:17,270 INFO L432 AbstractCegarLoop]: Abstraction has 236 states and 239 transitions. [2018-01-29 22:43:17,270 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-29 22:43:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 239 transitions. [2018-01-29 22:43:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-01-29 22:43:17,270 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:17,271 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:17,271 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:17,271 INFO L82 PathProgramCache]: Analyzing trace with hash 680209883, now seen corresponding path program 17 times [2018-01-29 22:43:17,271 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:17,271 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:17,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:17,271 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:17,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:17,280 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 0 proven. 1029 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-01-29 22:43:17,705 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:17,705 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 22:43:17,710 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 22:43:17,716 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,717 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,718 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,720 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,721 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,723 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,725 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,727 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,730 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,733 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,737 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,744 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,748 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,753 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,758 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:17,758 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:17,761 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 0 proven. 1029 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-01-29 22:43:17,811 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:17,811 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-01-29 22:43:17,811 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-29 22:43:17,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-29 22:43:17,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-01-29 22:43:17,811 INFO L87 Difference]: Start difference. First operand 236 states and 239 transitions. Second operand 31 states. [2018-01-29 22:43:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:18,671 INFO L93 Difference]: Finished difference Result 327 states and 333 transitions. [2018-01-29 22:43:18,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-29 22:43:18,672 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 230 [2018-01-29 22:43:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:18,673 INFO L225 Difference]: With dead ends: 327 [2018-01-29 22:43:18,673 INFO L226 Difference]: Without dead ends: 255 [2018-01-29 22:43:18,673 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1123, Invalid=2299, Unknown=0, NotChecked=0, Total=3422 [2018-01-29 22:43:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-01-29 22:43:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 247. [2018-01-29 22:43:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-01-29 22:43:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 250 transitions. [2018-01-29 22:43:18,676 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 250 transitions. Word has length 230 [2018-01-29 22:43:18,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:18,677 INFO L432 AbstractCegarLoop]: Abstraction has 247 states and 250 transitions. [2018-01-29 22:43:18,677 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-29 22:43:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 250 transitions. [2018-01-29 22:43:18,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-01-29 22:43:18,677 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:18,678 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:18,678 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:18,678 INFO L82 PathProgramCache]: Analyzing trace with hash 331487814, now seen corresponding path program 18 times [2018-01-29 22:43:18,678 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:18,678 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:18,678 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:18,678 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:18,678 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:18,688 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 0 proven. 1185 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-01-29 22:43:19,429 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:19,430 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 22:43:19,434 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 22:43:19,441 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,457 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,458 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,467 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,469 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,476 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,480 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,481 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,483 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,485 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,492 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,495 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,499 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,503 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,506 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,509 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:19,510 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:19,512 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:19,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1419 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 1185 trivial. 0 not checked. [2018-01-29 22:43:19,776 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:19,776 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21] total 52 [2018-01-29 22:43:19,777 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-29 22:43:19,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-29 22:43:19,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2245, Unknown=0, NotChecked=0, Total=2652 [2018-01-29 22:43:19,778 INFO L87 Difference]: Start difference. First operand 247 states and 250 transitions. Second operand 52 states. [2018-01-29 22:43:20,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:20,811 INFO L93 Difference]: Finished difference Result 347 states and 354 transitions. [2018-01-29 22:43:20,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-29 22:43:20,811 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 241 [2018-01-29 22:43:20,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:20,812 INFO L225 Difference]: With dead ends: 347 [2018-01-29 22:43:20,812 INFO L226 Difference]: Without dead ends: 275 [2018-01-29 22:43:20,814 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1961 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1775, Invalid=8125, Unknown=0, NotChecked=0, Total=9900 [2018-01-29 22:43:20,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-01-29 22:43:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 264. [2018-01-29 22:43:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2018-01-29 22:43:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 267 transitions. [2018-01-29 22:43:20,817 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 267 transitions. Word has length 241 [2018-01-29 22:43:20,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:20,818 INFO L432 AbstractCegarLoop]: Abstraction has 264 states and 267 transitions. [2018-01-29 22:43:20,818 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-29 22:43:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 267 transitions. [2018-01-29 22:43:20,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-01-29 22:43:20,819 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:20,819 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:20,819 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:20,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1191369667, now seen corresponding path program 19 times [2018-01-29 22:43:20,819 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:20,819 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:20,820 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:20,820 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:20,820 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:20,832 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:21,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1642 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-01-29 22:43:21,252 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:21,252 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 [2018-01-29 22:43:21,257 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:21,280 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:21,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1642 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2018-01-29 22:43:21,797 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:21,797 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 35] total 56 [2018-01-29 22:43:21,797 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-29 22:43:21,797 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-29 22:43:21,798 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=2615, Unknown=0, NotChecked=0, Total=3080 [2018-01-29 22:43:21,798 INFO L87 Difference]: Start difference. First operand 264 states and 267 transitions. Second operand 56 states. [2018-01-29 22:43:22,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:22,687 INFO L93 Difference]: Finished difference Result 370 states and 377 transitions. [2018-01-29 22:43:22,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-29 22:43:22,687 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 258 [2018-01-29 22:43:22,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:22,688 INFO L225 Difference]: With dead ends: 370 [2018-01-29 22:43:22,688 INFO L226 Difference]: Without dead ends: 292 [2018-01-29 22:43:22,689 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2283 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2045, Invalid=9511, Unknown=0, NotChecked=0, Total=11556 [2018-01-29 22:43:22,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-01-29 22:43:22,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 281. [2018-01-29 22:43:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-01-29 22:43:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 284 transitions. [2018-01-29 22:43:22,692 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 284 transitions. Word has length 258 [2018-01-29 22:43:22,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:22,692 INFO L432 AbstractCegarLoop]: Abstraction has 281 states and 284 transitions. [2018-01-29 22:43:22,692 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-29 22:43:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 284 transitions. [2018-01-29 22:43:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-01-29 22:43:22,693 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:22,693 INFO L350 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:22,693 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:22,693 INFO L82 PathProgramCache]: Analyzing trace with hash 259376694, now seen corresponding path program 20 times [2018-01-29 22:43:22,693 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:22,694 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:22,694 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:22,694 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:22,694 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:22,704 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1882 backedges. 0 proven. 1530 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-01-29 22:43:23,194 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:23,194 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 [2018-01-29 22:43:23,198 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 22:43:23,206 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:23,222 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:23,224 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:23,227 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1882 backedges. 0 proven. 1530 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-01-29 22:43:23,277 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:23,277 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-01-29 22:43:23,277 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-29 22:43:23,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-29 22:43:23,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-29 22:43:23,278 INFO L87 Difference]: Start difference. First operand 281 states and 284 transitions. Second operand 37 states. [2018-01-29 22:43:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:23,683 INFO L93 Difference]: Finished difference Result 384 states and 390 transitions. [2018-01-29 22:43:23,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-29 22:43:23,684 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 275 [2018-01-29 22:43:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:23,684 INFO L225 Difference]: With dead ends: 384 [2018-01-29 22:43:23,684 INFO L226 Difference]: Without dead ends: 300 [2018-01-29 22:43:23,685 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1618, Invalid=3352, Unknown=0, NotChecked=0, Total=4970 [2018-01-29 22:43:23,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-01-29 22:43:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 292. [2018-01-29 22:43:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-01-29 22:43:23,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 295 transitions. [2018-01-29 22:43:23,688 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 295 transitions. Word has length 275 [2018-01-29 22:43:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:23,688 INFO L432 AbstractCegarLoop]: Abstraction has 292 states and 295 transitions. [2018-01-29 22:43:23,688 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-29 22:43:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 295 transitions. [2018-01-29 22:43:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-01-29 22:43:23,689 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:23,689 INFO L350 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:23,689 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:23,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1618572373, now seen corresponding path program 21 times [2018-01-29 22:43:23,689 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:23,689 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:23,689 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:23,689 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:23,690 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:23,699 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2071 backedges. 0 proven. 1719 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-01-29 22:43:24,380 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:24,380 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 [2018-01-29 22:43:24,384 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 22:43:24,392 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,393 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,395 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,396 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,398 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,400 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,402 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,404 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,407 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,409 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,412 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,415 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:24,416 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:24,418 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2071 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2018-01-29 22:43:24,811 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:24,811 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 25] total 62 [2018-01-29 22:43:24,812 INFO L409 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-01-29 22:43:24,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-01-29 22:43:24,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=3216, Unknown=0, NotChecked=0, Total=3782 [2018-01-29 22:43:24,812 INFO L87 Difference]: Start difference. First operand 292 states and 295 transitions. Second operand 62 states. [2018-01-29 22:43:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:25,834 INFO L93 Difference]: Finished difference Result 404 states and 411 transitions. [2018-01-29 22:43:25,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-01-29 22:43:25,835 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 286 [2018-01-29 22:43:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:25,835 INFO L225 Difference]: With dead ends: 404 [2018-01-29 22:43:25,836 INFO L226 Difference]: Without dead ends: 320 [2018-01-29 22:43:25,836 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2520, Invalid=11760, Unknown=0, NotChecked=0, Total=14280 [2018-01-29 22:43:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-01-29 22:43:25,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 309. [2018-01-29 22:43:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-01-29 22:43:25,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 312 transitions. [2018-01-29 22:43:25,839 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 312 transitions. Word has length 286 [2018-01-29 22:43:25,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:25,839 INFO L432 AbstractCegarLoop]: Abstraction has 309 states and 312 transitions. [2018-01-29 22:43:25,839 INFO L433 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-01-29 22:43:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 312 transitions. [2018-01-29 22:43:25,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-01-29 22:43:25,840 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:25,840 INFO L350 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:25,840 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:25,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1298794910, now seen corresponding path program 22 times [2018-01-29 22:43:25,841 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:25,841 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:25,841 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:25,841 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:25,841 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:25,852 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2339 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2018-01-29 22:43:26,221 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:26,221 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-29 22:43:26,225 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 22:43:26,273 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:26,276 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2339 backedges. 0 proven. 1919 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-01-29 22:43:27,136 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:27,137 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 41] total 66 [2018-01-29 22:43:27,137 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-29 22:43:27,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-29 22:43:27,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=3656, Unknown=0, NotChecked=0, Total=4290 [2018-01-29 22:43:27,138 INFO L87 Difference]: Start difference. First operand 309 states and 312 transitions. Second operand 66 states. [2018-01-29 22:43:28,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:28,433 INFO L93 Difference]: Finished difference Result 427 states and 434 transitions. [2018-01-29 22:43:28,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-29 22:43:28,433 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 303 [2018-01-29 22:43:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:28,434 INFO L225 Difference]: With dead ends: 427 [2018-01-29 22:43:28,434 INFO L226 Difference]: Without dead ends: 337 [2018-01-29 22:43:28,435 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3262 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2840, Invalid=13416, Unknown=0, NotChecked=0, Total=16256 [2018-01-29 22:43:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-01-29 22:43:28,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 326. [2018-01-29 22:43:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-01-29 22:43:28,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 329 transitions. [2018-01-29 22:43:28,438 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 329 transitions. Word has length 303 [2018-01-29 22:43:28,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:28,438 INFO L432 AbstractCegarLoop]: Abstraction has 326 states and 329 transitions. [2018-01-29 22:43:28,438 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-29 22:43:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 329 transitions. [2018-01-29 22:43:28,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-01-29 22:43:28,439 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:28,439 INFO L350 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:28,439 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:28,439 INFO L82 PathProgramCache]: Analyzing trace with hash 328661595, now seen corresponding path program 23 times [2018-01-29 22:43:28,439 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:28,439 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:28,440 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:28,440 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:28,440 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:28,450 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2624 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 2130 trivial. 0 not checked. [2018-01-29 22:43:28,834 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:28,834 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 [2018-01-29 22:43:28,838 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 22:43:28,845 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,853 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,854 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,855 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,857 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,858 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,860 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,862 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,864 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,867 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,870 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,873 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,877 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,884 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,897 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,903 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,909 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,915 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,922 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,931 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,940 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:28,941 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:28,944 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2624 backedges. 0 proven. 2130 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-01-29 22:43:29,634 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:29,634 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 43] total 70 [2018-01-29 22:43:29,635 INFO L409 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-01-29 22:43:29,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-01-29 22:43:29,635 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=706, Invalid=4124, Unknown=0, NotChecked=0, Total=4830 [2018-01-29 22:43:29,635 INFO L87 Difference]: Start difference. First operand 326 states and 329 transitions. Second operand 70 states. [2018-01-29 22:43:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:31,100 INFO L93 Difference]: Finished difference Result 450 states and 457 transitions. [2018-01-29 22:43:31,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-01-29 22:43:31,101 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 320 [2018-01-29 22:43:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:31,102 INFO L225 Difference]: With dead ends: 450 [2018-01-29 22:43:31,102 INFO L226 Difference]: Without dead ends: 354 [2018-01-29 22:43:31,103 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3180, Invalid=15180, Unknown=0, NotChecked=0, Total=18360 [2018-01-29 22:43:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-01-29 22:43:31,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 343. [2018-01-29 22:43:31,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-01-29 22:43:31,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 346 transitions. [2018-01-29 22:43:31,116 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 346 transitions. Word has length 320 [2018-01-29 22:43:31,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:31,116 INFO L432 AbstractCegarLoop]: Abstraction has 343 states and 346 transitions. [2018-01-29 22:43:31,116 INFO L433 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-01-29 22:43:31,116 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 346 transitions. [2018-01-29 22:43:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-01-29 22:43:31,117 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:31,117 INFO L350 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:31,117 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash -833345138, now seen corresponding path program 24 times [2018-01-29 22:43:31,118 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:31,118 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:31,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:31,118 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:31,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:31,143 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 574 refuted. 0 times theorem prover too weak. 2352 trivial. 0 not checked. [2018-01-29 22:43:31,602 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:31,602 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 [2018-01-29 22:43:31,609 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 22:43:31,617 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,619 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,620 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,622 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,623 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,625 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,626 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,628 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,630 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,637 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,639 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,641 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,644 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,646 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,649 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,653 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,656 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,660 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,664 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,668 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,672 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,677 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:31,678 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:31,681 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-01-29 22:43:32,419 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:32,420 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 45] total 74 [2018-01-29 22:43:32,420 INFO L409 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-01-29 22:43:32,420 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-01-29 22:43:32,420 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=4620, Unknown=0, NotChecked=0, Total=5402 [2018-01-29 22:43:32,420 INFO L87 Difference]: Start difference. First operand 343 states and 346 transitions. Second operand 74 states. [2018-01-29 22:43:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:35,258 INFO L93 Difference]: Finished difference Result 473 states and 480 transitions. [2018-01-29 22:43:35,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-01-29 22:43:35,258 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 337 [2018-01-29 22:43:35,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:35,259 INFO L225 Difference]: With dead ends: 473 [2018-01-29 22:43:35,259 INFO L226 Difference]: Without dead ends: 371 [2018-01-29 22:43:35,260 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4178 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3540, Invalid=17052, Unknown=0, NotChecked=0, Total=20592 [2018-01-29 22:43:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-01-29 22:43:35,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 360. [2018-01-29 22:43:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2018-01-29 22:43:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 363 transitions. [2018-01-29 22:43:35,263 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 363 transitions. Word has length 337 [2018-01-29 22:43:35,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:35,263 INFO L432 AbstractCegarLoop]: Abstraction has 360 states and 363 transitions. [2018-01-29 22:43:35,263 INFO L433 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-01-29 22:43:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 363 transitions. [2018-01-29 22:43:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-01-29 22:43:35,264 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:35,264 INFO L350 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:35,264 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:35,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1931155723, now seen corresponding path program 25 times [2018-01-29 22:43:35,264 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:35,265 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:35,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:35,265 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:35,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:35,276 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3245 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 2585 trivial. 0 not checked. [2018-01-29 22:43:36,145 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:36,145 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-01-29 22:43:36,150 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:36,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:36,188 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3245 backedges. 0 proven. 2585 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-01-29 22:43:38,069 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:38,069 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 47] total 78 [2018-01-29 22:43:38,069 INFO L409 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-01-29 22:43:38,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-01-29 22:43:38,070 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=862, Invalid=5144, Unknown=0, NotChecked=0, Total=6006 [2018-01-29 22:43:38,070 INFO L87 Difference]: Start difference. First operand 360 states and 363 transitions. Second operand 78 states. [2018-01-29 22:43:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:39,729 INFO L93 Difference]: Finished difference Result 496 states and 503 transitions. [2018-01-29 22:43:39,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-01-29 22:43:39,730 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 354 [2018-01-29 22:43:39,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:39,731 INFO L225 Difference]: With dead ends: 496 [2018-01-29 22:43:39,731 INFO L226 Difference]: Without dead ends: 388 [2018-01-29 22:43:39,732 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4678 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3920, Invalid=19032, Unknown=0, NotChecked=0, Total=22952 [2018-01-29 22:43:39,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-01-29 22:43:39,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 377. [2018-01-29 22:43:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-01-29 22:43:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 380 transitions. [2018-01-29 22:43:39,736 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 380 transitions. Word has length 354 [2018-01-29 22:43:39,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:39,736 INFO L432 AbstractCegarLoop]: Abstraction has 377 states and 380 transitions. [2018-01-29 22:43:39,736 INFO L433 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-01-29 22:43:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 380 transitions. [2018-01-29 22:43:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-01-29 22:43:39,738 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:39,738 INFO L350 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:39,738 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:39,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1606375042, now seen corresponding path program 26 times [2018-01-29 22:43:39,738 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:39,738 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:39,738 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:39,739 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:39,739 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:39,753 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:40,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3581 backedges. 0 proven. 752 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2018-01-29 22:43:40,418 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:40,418 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 [2018-01-29 22:43:40,428 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 22:43:40,437 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:40,462 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:40,473 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:40,476 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3581 backedges. 0 proven. 2829 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2018-01-29 22:43:41,342 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:41,342 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 49] total 82 [2018-01-29 22:43:41,342 INFO L409 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-01-29 22:43:41,342 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-01-29 22:43:41,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=5696, Unknown=0, NotChecked=0, Total=6642 [2018-01-29 22:43:41,343 INFO L87 Difference]: Start difference. First operand 377 states and 380 transitions. Second operand 82 states. [2018-01-29 22:43:43,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:43,152 INFO L93 Difference]: Finished difference Result 519 states and 526 transitions. [2018-01-29 22:43:43,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-01-29 22:43:43,152 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 371 [2018-01-29 22:43:43,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:43,154 INFO L225 Difference]: With dead ends: 519 [2018-01-29 22:43:43,154 INFO L226 Difference]: Without dead ends: 405 [2018-01-29 22:43:43,154 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5206 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4320, Invalid=21120, Unknown=0, NotChecked=0, Total=25440 [2018-01-29 22:43:43,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-01-29 22:43:43,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 394. [2018-01-29 22:43:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-01-29 22:43:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 397 transitions. [2018-01-29 22:43:43,158 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 397 transitions. Word has length 371 [2018-01-29 22:43:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:43,158 INFO L432 AbstractCegarLoop]: Abstraction has 394 states and 397 transitions. [2018-01-29 22:43:43,158 INFO L433 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-01-29 22:43:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 397 transitions. [2018-01-29 22:43:43,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-01-29 22:43:43,159 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:43,159 INFO L350 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:43,159 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:43,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2097354821, now seen corresponding path program 27 times [2018-01-29 22:43:43,160 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:43,160 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:43,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:43,160 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:43,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:43,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:43,172 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3934 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2018-01-29 22:43:43,856 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:43,856 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 [2018-01-29 22:43:43,861 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 22:43:43,870 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,871 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,873 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,875 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,877 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,879 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,881 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,883 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,886 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,888 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,891 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,894 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,897 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,901 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,905 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,910 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,915 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,921 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:43:43,922 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:43,924 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3934 backedges. 0 proven. 850 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2018-01-29 22:43:43,997 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:43,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-01-29 22:43:43,998 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-29 22:43:43,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-29 22:43:43,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-01-29 22:43:43,998 INFO L87 Difference]: Start difference. First operand 394 states and 397 transitions. Second operand 37 states. [2018-01-29 22:43:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:44,375 INFO L93 Difference]: Finished difference Result 417 states and 422 transitions. [2018-01-29 22:43:44,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-29 22:43:44,376 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 388 [2018-01-29 22:43:44,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:44,377 INFO L225 Difference]: With dead ends: 417 [2018-01-29 22:43:44,377 INFO L226 Difference]: Without dead ends: 403 [2018-01-29 22:43:44,377 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1618, Invalid=3352, Unknown=0, NotChecked=0, Total=4970 [2018-01-29 22:43:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-01-29 22:43:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 400. [2018-01-29 22:43:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2018-01-29 22:43:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 403 transitions. [2018-01-29 22:43:44,387 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 403 transitions. Word has length 388 [2018-01-29 22:43:44,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:44,387 INFO L432 AbstractCegarLoop]: Abstraction has 400 states and 403 transitions. [2018-01-29 22:43:44,387 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-29 22:43:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 403 transitions. [2018-01-29 22:43:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-01-29 22:43:44,388 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:44,388 INFO L350 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:44,388 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:44,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1603213693, now seen corresponding path program 28 times [2018-01-29 22:43:44,389 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:44,389 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:44,389 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:44,389 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:44,389 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:44,401 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4038 backedges. 0 proven. 954 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2018-01-29 22:43:45,276 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:45,276 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 [2018-01-29 22:43:45,281 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 22:43:45,343 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:45,346 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4038 backedges. 0 proven. 3084 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2018-01-29 22:43:46,501 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:46,501 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 51] total 88 [2018-01-29 22:43:46,502 INFO L409 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-01-29 22:43:46,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-01-29 22:43:46,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1073, Invalid=6583, Unknown=0, NotChecked=0, Total=7656 [2018-01-29 22:43:46,502 INFO L87 Difference]: Start difference. First operand 400 states and 403 transitions. Second operand 88 states. [2018-01-29 22:43:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:48,730 INFO L93 Difference]: Finished difference Result 554 states and 561 transitions. [2018-01-29 22:43:48,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-01-29 22:43:48,730 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 394 [2018-01-29 22:43:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:48,731 INFO L225 Difference]: With dead ends: 554 [2018-01-29 22:43:48,731 INFO L226 Difference]: Without dead ends: 428 [2018-01-29 22:43:48,732 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6059 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4925, Invalid=24487, Unknown=0, NotChecked=0, Total=29412 [2018-01-29 22:43:48,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2018-01-29 22:43:48,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 417. [2018-01-29 22:43:48,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-01-29 22:43:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 420 transitions. [2018-01-29 22:43:48,735 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 420 transitions. Word has length 394 [2018-01-29 22:43:48,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:48,735 INFO L432 AbstractCegarLoop]: Abstraction has 417 states and 420 transitions. [2018-01-29 22:43:48,735 INFO L433 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-01-29 22:43:48,735 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 420 transitions. [2018-01-29 22:43:48,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-01-29 22:43:48,737 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:48,737 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:48,737 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:48,737 INFO L82 PathProgramCache]: Analyzing trace with hash -509594122, now seen corresponding path program 29 times [2018-01-29 22:43:48,737 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:48,737 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:48,738 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:48,738 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:48,738 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:48,749 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4414 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 3350 trivial. 0 not checked. [2018-01-29 22:43:49,576 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:49,576 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 [2018-01-29 22:43:49,580 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 22:43:49,590 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,591 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,592 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,593 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,594 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,596 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,598 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,600 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,602 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,605 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,608 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,611 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,615 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,619 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,623 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,628 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,634 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,641 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,648 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,656 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,665 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,675 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,686 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,698 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,711 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,726 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:49,727 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:49,730 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4414 backedges. 0 proven. 1064 refuted. 0 times theorem prover too weak. 3350 trivial. 0 not checked. [2018-01-29 22:43:49,799 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:49,799 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-01-29 22:43:49,800 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-29 22:43:49,800 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-29 22:43:49,800 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2018-01-29 22:43:49,800 INFO L87 Difference]: Start difference. First operand 417 states and 420 transitions. Second operand 41 states. [2018-01-29 22:43:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:50,377 INFO L93 Difference]: Finished difference Result 440 states and 445 transitions. [2018-01-29 22:43:50,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-01-29 22:43:50,377 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 411 [2018-01-29 22:43:50,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:50,378 INFO L225 Difference]: With dead ends: 440 [2018-01-29 22:43:50,378 INFO L226 Difference]: Without dead ends: 426 [2018-01-29 22:43:50,378 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1998, Invalid=4164, Unknown=0, NotChecked=0, Total=6162 [2018-01-29 22:43:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-01-29 22:43:50,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 423. [2018-01-29 22:43:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-01-29 22:43:50,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 426 transitions. [2018-01-29 22:43:50,381 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 426 transitions. Word has length 411 [2018-01-29 22:43:50,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:50,382 INFO L432 AbstractCegarLoop]: Abstraction has 423 states and 426 transitions. [2018-01-29 22:43:50,382 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-29 22:43:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 426 transitions. [2018-01-29 22:43:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-01-29 22:43:50,383 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:50,383 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:50,383 INFO L371 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:50,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1880007554, now seen corresponding path program 30 times [2018-01-29 22:43:50,383 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:50,384 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:50,384 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:50,384 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:50,384 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:50,396 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 3350 trivial. 0 not checked. [2018-01-29 22:43:51,534 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:51,534 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 [2018-01-29 22:43:51,550 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-29 22:43:51,560 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,567 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,577 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,587 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,588 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,590 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,591 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,593 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,595 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,597 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,599 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,601 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,603 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,606 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,609 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,612 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,616 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,621 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,628 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,632 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,639 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,644 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,649 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,655 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,662 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,668 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-29 22:43:51,669 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:51,672 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 0 proven. 1180 refuted. 0 times theorem prover too weak. 3350 trivial. 0 not checked. [2018-01-29 22:43:51,742 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:51,742 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-01-29 22:43:51,742 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-29 22:43:51,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-29 22:43:51,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2018-01-29 22:43:51,743 INFO L87 Difference]: Start difference. First operand 423 states and 426 transitions. Second operand 43 states. [2018-01-29 22:43:52,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:52,230 INFO L93 Difference]: Finished difference Result 446 states and 451 transitions. [2018-01-29 22:43:52,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-01-29 22:43:52,231 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 417 [2018-01-29 22:43:52,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:52,232 INFO L225 Difference]: With dead ends: 446 [2018-01-29 22:43:52,232 INFO L226 Difference]: Without dead ends: 432 [2018-01-29 22:43:52,232 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2203, Invalid=4603, Unknown=0, NotChecked=0, Total=6806 [2018-01-29 22:43:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2018-01-29 22:43:52,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 429. [2018-01-29 22:43:52,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-01-29 22:43:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 432 transitions. [2018-01-29 22:43:52,236 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 432 transitions. Word has length 417 [2018-01-29 22:43:52,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:52,236 INFO L432 AbstractCegarLoop]: Abstraction has 429 states and 432 transitions. [2018-01-29 22:43:52,236 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-29 22:43:52,236 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 432 transitions. [2018-01-29 22:43:52,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-01-29 22:43:52,238 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:52,238 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:52,238 INFO L371 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:52,238 INFO L82 PathProgramCache]: Analyzing trace with hash -996311802, now seen corresponding path program 31 times [2018-01-29 22:43:52,238 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:52,238 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:52,239 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:52,239 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:43:52,239 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:52,254 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4652 backedges. 0 proven. 1302 refuted. 0 times theorem prover too weak. 3350 trivial. 0 not checked. [2018-01-29 22:43:53,319 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:53,319 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-29 22:43:53,339 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-29 22:43:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:53,378 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4652 backedges. 0 proven. 3350 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2018-01-29 22:43:54,596 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:54,596 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 53] total 96 [2018-01-29 22:43:54,596 INFO L409 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-01-29 22:43:54,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-01-29 22:43:54,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1255, Invalid=7865, Unknown=0, NotChecked=0, Total=9120 [2018-01-29 22:43:54,597 INFO L87 Difference]: Start difference. First operand 429 states and 432 transitions. Second operand 96 states. [2018-01-29 22:43:57,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:43:57,122 INFO L93 Difference]: Finished difference Result 601 states and 608 transitions. [2018-01-29 22:43:57,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-01-29 22:43:57,123 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 423 [2018-01-29 22:43:57,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:43:57,124 INFO L225 Difference]: With dead ends: 601 [2018-01-29 22:43:57,124 INFO L226 Difference]: Without dead ends: 457 [2018-01-29 22:43:57,125 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7297 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5795, Invalid=29361, Unknown=0, NotChecked=0, Total=35156 [2018-01-29 22:43:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-01-29 22:43:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 446. [2018-01-29 22:43:57,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-01-29 22:43:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 449 transitions. [2018-01-29 22:43:57,128 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 449 transitions. Word has length 423 [2018-01-29 22:43:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:43:57,128 INFO L432 AbstractCegarLoop]: Abstraction has 446 states and 449 transitions. [2018-01-29 22:43:57,128 INFO L433 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-01-29 22:43:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 449 transitions. [2018-01-29 22:43:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-01-29 22:43:57,130 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:43:57,130 INFO L350 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:43:57,130 INFO L371 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:43:57,130 INFO L82 PathProgramCache]: Analyzing trace with hash -2135296829, now seen corresponding path program 32 times [2018-01-29 22:43:57,130 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:43:57,130 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:43:57,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:57,131 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:43:57,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:43:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:43:57,143 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:43:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5057 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 3627 trivial. 0 not checked. [2018-01-29 22:43:58,271 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:43:58,271 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 [2018-01-29 22:43:58,275 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-29 22:43:58,285 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:58,306 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:43:58,310 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:43:58,313 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:43:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5057 backedges. 0 proven. 3627 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2018-01-29 22:43:59,517 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:43:59,518 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 55] total 100 [2018-01-29 22:43:59,518 INFO L409 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-01-29 22:43:59,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-01-29 22:43:59,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1357, Invalid=8543, Unknown=0, NotChecked=0, Total=9900 [2018-01-29 22:43:59,519 INFO L87 Difference]: Start difference. First operand 446 states and 449 transitions. Second operand 100 states. [2018-01-29 22:44:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:44:02,255 INFO L93 Difference]: Finished difference Result 624 states and 631 transitions. [2018-01-29 22:44:02,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-01-29 22:44:02,255 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 440 [2018-01-29 22:44:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:44:02,256 INFO L225 Difference]: With dead ends: 624 [2018-01-29 22:44:02,256 INFO L226 Difference]: Without dead ends: 474 [2018-01-29 22:44:02,257 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7951 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6285, Invalid=31935, Unknown=0, NotChecked=0, Total=38220 [2018-01-29 22:44:02,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-01-29 22:44:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 463. [2018-01-29 22:44:02,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2018-01-29 22:44:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 466 transitions. [2018-01-29 22:44:02,260 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 466 transitions. Word has length 440 [2018-01-29 22:44:02,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:44:02,260 INFO L432 AbstractCegarLoop]: Abstraction has 463 states and 466 transitions. [2018-01-29 22:44:02,260 INFO L433 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-01-29 22:44:02,260 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 466 transitions. [2018-01-29 22:44:02,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2018-01-29 22:44:02,262 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:44:02,262 INFO L350 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:44:02,262 INFO L371 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:44:02,262 INFO L82 PathProgramCache]: Analyzing trace with hash 122855670, now seen corresponding path program 33 times [2018-01-29 22:44:02,262 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:44:02,262 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:44:02,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:44:02,263 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:44:02,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:44:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:44:02,275 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:44:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5479 backedges. 0 proven. 1564 refuted. 0 times theorem prover too weak. 3915 trivial. 0 not checked. [2018-01-29 22:44:03,336 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:44:03,337 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 [2018-01-29 22:44:03,341 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-29 22:44:03,351 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,359 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,361 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,363 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,365 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,366 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,368 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,371 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,373 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,375 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,378 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,381 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,385 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,388 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,393 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,397 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,403 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,409 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,415 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,422 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,430 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,438 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,447 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,458 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-29 22:44:03,458 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:44:03,461 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:44:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5479 backedges. 0 proven. 1564 refuted. 0 times theorem prover too weak. 3915 trivial. 0 not checked. [2018-01-29 22:44:03,541 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:44:03,542 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-01-29 22:44:03,542 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-29 22:44:03,542 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-29 22:44:03,542 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2018-01-29 22:44:03,542 INFO L87 Difference]: Start difference. First operand 463 states and 466 transitions. Second operand 49 states. [2018-01-29 22:44:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:44:04,186 INFO L93 Difference]: Finished difference Result 486 states and 491 transitions. [2018-01-29 22:44:04,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-01-29 22:44:04,186 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 457 [2018-01-29 22:44:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:44:04,187 INFO L225 Difference]: With dead ends: 486 [2018-01-29 22:44:04,187 INFO L226 Difference]: Without dead ends: 472 [2018-01-29 22:44:04,187 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2878, Invalid=6052, Unknown=0, NotChecked=0, Total=8930 [2018-01-29 22:44:04,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2018-01-29 22:44:04,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 469. [2018-01-29 22:44:04,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-01-29 22:44:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 472 transitions. [2018-01-29 22:44:04,191 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 472 transitions. Word has length 457 [2018-01-29 22:44:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:44:04,191 INFO L432 AbstractCegarLoop]: Abstraction has 469 states and 472 transitions. [2018-01-29 22:44:04,191 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-29 22:44:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 472 transitions. [2018-01-29 22:44:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-01-29 22:44:04,192 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:44:04,192 INFO L350 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:44:04,193 INFO L371 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:44:04,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1659340670, now seen corresponding path program 34 times [2018-01-29 22:44:04,193 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:44:04,193 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:44:04,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:44:04,194 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:44:04,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:44:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:44:04,207 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:44:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5619 backedges. 0 proven. 1704 refuted. 0 times theorem prover too weak. 3915 trivial. 0 not checked. [2018-01-29 22:44:05,279 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:44:05,279 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 [2018-01-29 22:44:05,284 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-29 22:44:05,348 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:44:05,351 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:44:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5619 backedges. 0 proven. 3915 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2018-01-29 22:44:06,631 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:44:06,631 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 57] total 106 [2018-01-29 22:44:06,631 INFO L409 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-01-29 22:44:06,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-01-29 22:44:06,632 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=9616, Unknown=0, NotChecked=0, Total=11130 [2018-01-29 22:44:06,632 INFO L87 Difference]: Start difference. First operand 469 states and 472 transitions. Second operand 106 states. [2018-01-29 22:44:09,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:44:09,484 INFO L93 Difference]: Finished difference Result 659 states and 666 transitions. [2018-01-29 22:44:09,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-01-29 22:44:09,484 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 463 [2018-01-29 22:44:09,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:44:09,485 INFO L225 Difference]: With dead ends: 659 [2018-01-29 22:44:09,485 INFO L226 Difference]: Without dead ends: 497 [2018-01-29 22:44:09,487 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8990 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=7040, Invalid=36016, Unknown=0, NotChecked=0, Total=43056 [2018-01-29 22:44:09,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2018-01-29 22:44:09,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 486. [2018-01-29 22:44:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2018-01-29 22:44:09,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 489 transitions. [2018-01-29 22:44:09,490 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 489 transitions. Word has length 463 [2018-01-29 22:44:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:44:09,490 INFO L432 AbstractCegarLoop]: Abstraction has 486 states and 489 transitions. [2018-01-29 22:44:09,490 INFO L433 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-01-29 22:44:09,490 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 489 transitions. [2018-01-29 22:44:09,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-01-29 22:44:09,492 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:44:09,492 INFO L350 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:44:09,492 INFO L371 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-29 22:44:09,492 INFO L82 PathProgramCache]: Analyzing trace with hash -737661893, now seen corresponding path program 35 times [2018-01-29 22:44:09,492 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:44:09,492 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:44:09,492 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:44:09,493 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-29 22:44:09,493 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:44:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:44:09,505 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:44:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6064 backedges. 0 proven. 4214 refuted. 0 times theorem prover too weak. 1850 trivial. 0 not checked. [2018-01-29 22:44:10,948 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-29 22:44:10,948 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 [2018-01-29 22:44:10,952 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-29 22:44:10,962 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,964 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,965 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,967 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,969 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,972 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,974 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,976 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,978 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,981 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,984 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,988 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,992 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:10,996 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,000 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,005 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,011 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,017 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,025 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,033 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,042 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,051 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,063 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,075 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,089 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,104 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,120 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,138 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,159 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-29 22:44:11,160 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-29 22:44:11,163 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-29 22:44:12,380 INFO L134 CoverageAnalysis]: Checked inductivity of 6064 backedges. 0 proven. 1850 refuted. 0 times theorem prover too weak. 4214 trivial. 0 not checked. [2018-01-29 22:44:12,397 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-29 22:44:12,397 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 53] total 110 [2018-01-29 22:44:12,398 INFO L409 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-01-29 22:44:12,398 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-01-29 22:44:12,398 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1626, Invalid=10364, Unknown=0, NotChecked=0, Total=11990 [2018-01-29 22:44:12,399 INFO L87 Difference]: Start difference. First operand 486 states and 489 transitions. Second operand 110 states. Received shutdown request... [2018-01-29 22:44:15,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-01-29 22:44:15,284 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-29 22:44:15,287 WARN L185 ceAbstractionStarter]: Timeout [2018-01-29 22:44:15,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 10:44:15 BoogieIcfgContainer [2018-01-29 22:44:15,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-29 22:44:15,287 INFO L168 Benchmark]: Toolchain (without parser) took 68923.71 ms. Allocated memory was 149.4 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 114.5 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 245.2 MB. Max. memory is 5.3 GB. [2018-01-29 22:44:15,288 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 149.4 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-29 22:44:15,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 101.77 ms. Allocated memory is still 149.4 MB. Free memory was 114.3 MB in the beginning and 106.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. [2018-01-29 22:44:15,288 INFO L168 Benchmark]: Boogie Preprocessor took 17.33 ms. Allocated memory is still 149.4 MB. Free memory was 106.4 MB in the beginning and 104.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 5.3 GB. [2018-01-29 22:44:15,288 INFO L168 Benchmark]: RCFGBuilder took 390.99 ms. Allocated memory is still 149.4 MB. Free memory was 104.6 MB in the beginning and 92.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 5.3 GB. [2018-01-29 22:44:15,289 INFO L168 Benchmark]: TraceAbstraction took 68411.28 ms. Allocated memory was 149.4 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 92.0 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 222.6 MB. Max. memory is 5.3 GB. [2018-01-29 22:44:15,289 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 149.4 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 101.77 ms. Allocated memory is still 149.4 MB. Free memory was 114.3 MB in the beginning and 106.4 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 17.33 ms. Allocated memory is still 149.4 MB. Free memory was 106.4 MB in the beginning and 104.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 5.3 GB. * RCFGBuilder took 390.99 ms. Allocated memory is still 149.4 MB. Free memory was 104.6 MB in the beginning and 92.2 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 68411.28 ms. Allocated memory was 149.4 MB in the beginning and 1.5 GB in the end (delta: 1.4 GB). Free memory was 92.0 MB in the beginning and 1.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 222.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (486states) and interpolant automaton (currently 154 states, 110 states before enhancement), while PredicateComparison was comparing new predicate (quantifier-free) to 210 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 46 locations, 1 error locations. TIMEOUT Result, 68.3s OverallTime, 38 OverallIterations, 29 TraceHistogramMax, 33.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1414 SDtfs, 4956 SDslu, 31851 SDs, 0 SdLazy, 10738 SolverSat, 1200 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11278 GetRequests, 8304 SyntacticMatches, 0 SemanticMatches, 2973 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78177 ImplicationChecksByTransitivity, 48.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=486occurred in iteration=37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 37 MinimizatonAttempts, 299 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 30.7s InterpolantComputationTime, 17857 NumberOfCodeBlocks, 17538 NumberOfCodeBlocksAsserted, 325 NumberOfCheckSat, 17784 ConstructedInterpolants, 0 QuantifiedInterpolants, 10812982 SizeOfPredicates, 997 NumberOfNonLiveVariables, 11830 ConjunctsInSsa, 1032 ConjunctsInUnsatCore, 73 InterpolantComputations, 3 PerfectInterpolantSequences, 79653/146582 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_copy1_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-29_22-44-15-299.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_copy1_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-29_22-44-15-299.csv Completed graceful shutdown