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-industry-pattern/check_removal_from_set_after_insertion_false-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 00:23:57,121 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 00:23:57,122 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 00:23:57,131 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 00:23:57,131 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 00:23:57,132 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 00:23:57,132 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 00:23:57,133 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 00:23:57,134 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 00:23:57,135 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 00:23:57,135 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 00:23:57,135 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 00:23:57,136 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 00:23:57,136 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 00:23:57,137 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 00:23:57,138 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 00:23:57,139 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 00:23:57,140 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 00:23:57,140 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 00:23:57,141 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 00:23:57,142 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 00:23:57,145 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-30 00:23:57,150 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 00:23:57,150 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 00:23:57,151 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 00:23:57,151 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 00:23:57,151 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 00:23:57,151 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 00:23:57,151 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 00:23:57,151 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 00:23:57,151 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 00:23:57,152 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 00:23:57,152 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 00:23:57,152 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 00:23:57,152 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 00:23:57,152 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 00:23:57,152 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 00:23:57,152 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 00:23:57,152 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 00:23:57,152 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 00:23:57,152 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 00:23:57,153 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 00:23:57,153 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 00:23:57,153 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 00:23:57,153 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 00:23:57,153 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 00:23:57,153 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 00:23:57,153 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 00:23:57,153 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 00:23:57,153 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 00:23:57,153 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 00:23:57,153 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 00:23:57,154 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 00:23:57,154 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 00:23:57,154 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 00:23:57,154 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 00:23:57,172 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 00:23:57,178 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 00:23:57,180 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 00:23:57,181 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 00:23:57,181 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 00:23:57,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/check_removal_from_set_after_insertion_false-unreach-call.i [2018-01-30 00:23:57,244 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 00:23:57,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-30 00:23:57,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 00:23:57,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 00:23:57,249 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 00:23:57,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 12:23:57" (1/1) ... [2018-01-30 00:23:57,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc8a74b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:23:57, skipping insertion in model container [2018-01-30 00:23:57,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 12:23:57" (1/1) ... [2018-01-30 00:23:57,261 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 00:23:57,270 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 00:23:57,345 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 00:23:57,357 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 00:23:57,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:23:57 WrapperNode [2018-01-30 00:23:57,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 00:23:57,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 00:23:57,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 00:23:57,363 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 00:23:57,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:23:57" (1/1) ... [2018-01-30 00:23:57,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:23:57" (1/1) ... [2018-01-30 00:23:57,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:23:57" (1/1) ... [2018-01-30 00:23:57,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:23:57" (1/1) ... [2018-01-30 00:23:57,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:23:57" (1/1) ... [2018-01-30 00:23:57,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:23:57" (1/1) ... [2018-01-30 00:23:57,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:23:57" (1/1) ... [2018-01-30 00:23:57,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 00:23:57,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 00:23:57,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 00:23:57,382 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 00:23:57,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:23:57" (1/1) ... No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 00:23:57,418 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 00:23:57,418 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 00:23:57,418 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 00:23:57,418 INFO L136 BoogieDeclarations]: Found implementation of procedure insert [2018-01-30 00:23:57,418 INFO L136 BoogieDeclarations]: Found implementation of procedure elem_exists [2018-01-30 00:23:57,418 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure insert [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure elem_exists [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 00:23:57,419 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 00:23:57,772 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 00:23:57,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 12:23:57 BoogieIcfgContainer [2018-01-30 00:23:57,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 00:23:57,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 00:23:57,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 00:23:57,775 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 00:23:57,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 12:23:57" (1/3) ... [2018-01-30 00:23:57,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2550f6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 12:23:57, skipping insertion in model container [2018-01-30 00:23:57,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 12:23:57" (2/3) ... [2018-01-30 00:23:57,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2550f6bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 12:23:57, skipping insertion in model container [2018-01-30 00:23:57,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 12:23:57" (3/3) ... [2018-01-30 00:23:57,777 INFO L107 eAbstractionObserver]: Analyzing ICFG check_removal_from_set_after_insertion_false-unreach-call.i [2018-01-30 00:23:57,782 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 00:23:57,786 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 00:23:57,811 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 00:23:57,812 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 00:23:57,812 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 00:23:57,812 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 00:23:57,812 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 00:23:57,812 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 00:23:57,812 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 00:23:57,812 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 00:23:57,812 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 00:23:57,822 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2018-01-30 00:23:57,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-30 00:23:57,826 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:23:57,827 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:23:57,827 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:23:57,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1669160766, now seen corresponding path program 1 times [2018-01-30 00:23:57,831 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:23:57,831 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:23:57,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:23:57,860 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:23:57,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:23:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:23:57,889 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:23:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 00:23:57,926 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:23:57,927 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 00:23:57,927 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 00:23:57,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 00:23:57,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 00:23:57,936 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 2 states. [2018-01-30 00:23:57,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:23:57,954 INFO L93 Difference]: Finished difference Result 182 states and 213 transitions. [2018-01-30 00:23:57,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 00:23:57,955 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-01-30 00:23:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:23:57,961 INFO L225 Difference]: With dead ends: 182 [2018-01-30 00:23:57,961 INFO L226 Difference]: Without dead ends: 93 [2018-01-30 00:23:57,963 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 00:23:57,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-30 00:23:57,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-01-30 00:23:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-30 00:23:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2018-01-30 00:23:57,987 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 29 [2018-01-30 00:23:57,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:23:57,988 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2018-01-30 00:23:57,988 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 00:23:57,988 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2018-01-30 00:23:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-30 00:23:57,989 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:23:57,989 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:23:57,989 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:23:57,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1647698763, now seen corresponding path program 1 times [2018-01-30 00:23:57,989 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:23:57,989 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:23:57,990 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:23:57,990 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:23:57,990 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:23:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:23:58,000 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:23:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 00:23:58,039 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:23:58,039 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 00:23:58,040 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 00:23:58,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 00:23:58,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 00:23:58,041 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 3 states. [2018-01-30 00:23:58,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:23:58,199 INFO L93 Difference]: Finished difference Result 125 states and 138 transitions. [2018-01-30 00:23:58,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 00:23:58,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-01-30 00:23:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:23:58,200 INFO L225 Difference]: With dead ends: 125 [2018-01-30 00:23:58,200 INFO L226 Difference]: Without dead ends: 98 [2018-01-30 00:23:58,201 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 00:23:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-01-30 00:23:58,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-01-30 00:23:58,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-30 00:23:58,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2018-01-30 00:23:58,206 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 31 [2018-01-30 00:23:58,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:23:58,207 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2018-01-30 00:23:58,207 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 00:23:58,207 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2018-01-30 00:23:58,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-30 00:23:58,208 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:23:58,208 INFO L350 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:23:58,208 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:23:58,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1586704151, now seen corresponding path program 1 times [2018-01-30 00:23:58,208 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:23:58,208 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:23:58,209 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:23:58,209 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:23:58,209 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:23:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:23:58,222 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:23:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 00:23:58,476 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:23:58,476 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-30 00:23:58,489 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:23:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:23:58,520 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:23:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-30 00:23:58,653 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:23:58,654 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2018-01-30 00:23:58,654 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 00:23:58,654 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 00:23:58,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-01-30 00:23:58,654 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 6 states. [2018-01-30 00:23:59,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:23:59,016 INFO L93 Difference]: Finished difference Result 221 states and 245 transitions. [2018-01-30 00:23:59,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-30 00:23:59,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2018-01-30 00:23:59,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:23:59,019 INFO L225 Difference]: With dead ends: 221 [2018-01-30 00:23:59,019 INFO L226 Difference]: Without dead ends: 178 [2018-01-30 00:23:59,019 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-30 00:23:59,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-30 00:23:59,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 116. [2018-01-30 00:23:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-30 00:23:59,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2018-01-30 00:23:59,029 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 44 [2018-01-30 00:23:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:23:59,029 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2018-01-30 00:23:59,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 00:23:59,029 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2018-01-30 00:23:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-01-30 00:23:59,030 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:23:59,031 INFO L350 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:23:59,031 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:23:59,031 INFO L82 PathProgramCache]: Analyzing trace with hash 164311154, now seen corresponding path program 1 times [2018-01-30 00:23:59,031 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:23:59,031 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:23:59,032 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:23:59,032 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:23:59,032 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:23:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:23:59,041 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:23:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-01-30 00:23:59,116 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 00:23:59,116 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-30 00:23:59,116 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-30 00:23:59,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-30 00:23:59,116 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-30 00:23:59,116 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand 4 states. [2018-01-30 00:23:59,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:23:59,153 INFO L93 Difference]: Finished difference Result 219 states and 240 transitions. [2018-01-30 00:23:59,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-30 00:23:59,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-01-30 00:23:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:23:59,154 INFO L225 Difference]: With dead ends: 219 [2018-01-30 00:23:59,154 INFO L226 Difference]: Without dead ends: 121 [2018-01-30 00:23:59,155 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-30 00:23:59,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-01-30 00:23:59,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2018-01-30 00:23:59,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-01-30 00:23:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 130 transitions. [2018-01-30 00:23:59,161 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 130 transitions. Word has length 71 [2018-01-30 00:23:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:23:59,161 INFO L432 AbstractCegarLoop]: Abstraction has 120 states and 130 transitions. [2018-01-30 00:23:59,161 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-30 00:23:59,161 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 130 transitions. [2018-01-30 00:23:59,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-01-30 00:23:59,162 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:23:59,162 INFO L350 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:23:59,163 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:23:59,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2009582137, now seen corresponding path program 1 times [2018-01-30 00:23:59,163 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:23:59,163 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:23:59,164 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:23:59,164 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:23:59,164 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:23:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:23:59,174 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:23:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-01-30 00:23:59,384 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:23:59,384 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:23:59,393 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:23:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:23:59,417 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:23:59,523 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-01-30 00:23:59,539 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-30 00:23:59,539 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-01-30 00:23:59,540 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 00:23:59,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 00:23:59,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-30 00:23:59,540 INFO L87 Difference]: Start difference. First operand 120 states and 130 transitions. Second operand 10 states. [2018-01-30 00:24:00,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:00,183 INFO L93 Difference]: Finished difference Result 262 states and 296 transitions. [2018-01-30 00:24:00,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 00:24:00,183 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2018-01-30 00:24:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:00,185 INFO L225 Difference]: With dead ends: 262 [2018-01-30 00:24:00,186 INFO L226 Difference]: Without dead ends: 160 [2018-01-30 00:24:00,186 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:24:00,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-30 00:24:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 138. [2018-01-30 00:24:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-01-30 00:24:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2018-01-30 00:24:00,193 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 74 [2018-01-30 00:24:00,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:00,193 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2018-01-30 00:24:00,193 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 00:24:00,193 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2018-01-30 00:24:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-01-30 00:24:00,196 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:00,196 INFO L350 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:00,196 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:00,196 INFO L82 PathProgramCache]: Analyzing trace with hash -468043280, now seen corresponding path program 1 times [2018-01-30 00:24:00,196 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:00,196 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:00,197 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:00,197 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:24:00,197 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:00,218 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:00,337 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-01-30 00:24:00,337 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:00,337 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:00,343 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:24:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:00,374 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-01-30 00:24:00,450 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:00,450 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2018-01-30 00:24:00,451 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 00:24:00,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 00:24:00,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-01-30 00:24:00,452 INFO L87 Difference]: Start difference. First operand 138 states and 151 transitions. Second operand 12 states. [2018-01-30 00:24:00,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:00,807 INFO L93 Difference]: Finished difference Result 305 states and 344 transitions. [2018-01-30 00:24:00,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 00:24:00,808 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2018-01-30 00:24:00,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:00,813 INFO L225 Difference]: With dead ends: 305 [2018-01-30 00:24:00,816 INFO L226 Difference]: Without dead ends: 246 [2018-01-30 00:24:00,816 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2018-01-30 00:24:00,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-01-30 00:24:00,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 170. [2018-01-30 00:24:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2018-01-30 00:24:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 190 transitions. [2018-01-30 00:24:00,828 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 190 transitions. Word has length 104 [2018-01-30 00:24:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:00,829 INFO L432 AbstractCegarLoop]: Abstraction has 170 states and 190 transitions. [2018-01-30 00:24:00,829 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 00:24:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 190 transitions. [2018-01-30 00:24:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-01-30 00:24:00,834 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:00,835 INFO L350 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:00,835 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:00,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1540611529, now seen corresponding path program 1 times [2018-01-30 00:24:00,835 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:00,835 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:00,841 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:00,842 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:24:00,842 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:00,862 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-01-30 00:24:01,066 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:01,066 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:01,082 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:24:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:01,115 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-01-30 00:24:01,341 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:01,341 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2018-01-30 00:24:01,341 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-30 00:24:01,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-30 00:24:01,342 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-01-30 00:24:01,342 INFO L87 Difference]: Start difference. First operand 170 states and 190 transitions. Second operand 14 states. [2018-01-30 00:24:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:01,896 INFO L93 Difference]: Finished difference Result 339 states and 385 transitions. [2018-01-30 00:24:01,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-30 00:24:01,896 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2018-01-30 00:24:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:01,897 INFO L225 Difference]: With dead ends: 339 [2018-01-30 00:24:01,897 INFO L226 Difference]: Without dead ends: 264 [2018-01-30 00:24:01,898 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2018-01-30 00:24:01,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2018-01-30 00:24:01,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 196. [2018-01-30 00:24:01,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-01-30 00:24:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 221 transitions. [2018-01-30 00:24:01,922 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 221 transitions. Word has length 126 [2018-01-30 00:24:01,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:01,922 INFO L432 AbstractCegarLoop]: Abstraction has 196 states and 221 transitions. [2018-01-30 00:24:01,922 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-30 00:24:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 221 transitions. [2018-01-30 00:24:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-01-30 00:24:01,927 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:01,927 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:01,927 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:01,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1040038528, now seen corresponding path program 2 times [2018-01-30 00:24:01,927 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:01,927 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:01,928 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:01,928 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:24:01,928 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:01,951 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-01-30 00:24:02,071 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:02,071 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:02,076 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:24:02,085 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:02,097 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:02,099 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:02,102 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-01-30 00:24:02,480 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:02,480 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 18 [2018-01-30 00:24:02,481 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 00:24:02,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 00:24:02,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-01-30 00:24:02,481 INFO L87 Difference]: Start difference. First operand 196 states and 221 transitions. Second operand 18 states. [2018-01-30 00:24:03,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:03,095 INFO L93 Difference]: Finished difference Result 402 states and 456 transitions. [2018-01-30 00:24:03,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 00:24:03,096 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 156 [2018-01-30 00:24:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:03,097 INFO L225 Difference]: With dead ends: 402 [2018-01-30 00:24:03,097 INFO L226 Difference]: Without dead ends: 317 [2018-01-30 00:24:03,098 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=309, Invalid=1251, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 00:24:03,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-01-30 00:24:03,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 228. [2018-01-30 00:24:03,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-01-30 00:24:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 260 transitions. [2018-01-30 00:24:03,109 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 260 transitions. Word has length 156 [2018-01-30 00:24:03,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:03,110 INFO L432 AbstractCegarLoop]: Abstraction has 228 states and 260 transitions. [2018-01-30 00:24:03,110 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 00:24:03,110 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 260 transitions. [2018-01-30 00:24:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-01-30 00:24:03,111 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:03,111 INFO L350 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:03,111 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:03,111 INFO L82 PathProgramCache]: Analyzing trace with hash 246485703, now seen corresponding path program 1 times [2018-01-30 00:24:03,111 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:03,111 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:03,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:03,112 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:03,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:03,123 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-01-30 00:24:03,382 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:03,382 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:03,387 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:24:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:03,425 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-01-30 00:24:03,653 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:03,653 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 20 [2018-01-30 00:24:03,653 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-30 00:24:03,653 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-30 00:24:03,654 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-01-30 00:24:03,654 INFO L87 Difference]: Start difference. First operand 228 states and 260 transitions. Second operand 20 states. [2018-01-30 00:24:04,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:04,201 INFO L93 Difference]: Finished difference Result 436 states and 497 transitions. [2018-01-30 00:24:04,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 00:24:04,205 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 178 [2018-01-30 00:24:04,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:04,206 INFO L225 Difference]: With dead ends: 436 [2018-01-30 00:24:04,206 INFO L226 Difference]: Without dead ends: 335 [2018-01-30 00:24:04,207 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=318, Invalid=1322, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 00:24:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-01-30 00:24:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 244. [2018-01-30 00:24:04,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-01-30 00:24:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 281 transitions. [2018-01-30 00:24:04,216 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 281 transitions. Word has length 178 [2018-01-30 00:24:04,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:04,216 INFO L432 AbstractCegarLoop]: Abstraction has 244 states and 281 transitions. [2018-01-30 00:24:04,217 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-30 00:24:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 281 transitions. [2018-01-30 00:24:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-30 00:24:04,218 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:04,218 INFO L350 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:04,218 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:04,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1112103950, now seen corresponding path program 2 times [2018-01-30 00:24:04,218 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:04,218 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:04,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:04,219 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:24:04,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:04,229 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-01-30 00:24:04,347 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:04,347 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:04,352 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:24:04,365 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:04,379 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:04,382 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:04,385 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-01-30 00:24:04,579 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:04,579 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16] total 22 [2018-01-30 00:24:04,580 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-30 00:24:04,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-30 00:24:04,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2018-01-30 00:24:04,580 INFO L87 Difference]: Start difference. First operand 244 states and 281 transitions. Second operand 22 states. [2018-01-30 00:24:05,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:05,542 INFO L93 Difference]: Finished difference Result 458 states and 524 transitions. [2018-01-30 00:24:05,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 00:24:05,543 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 200 [2018-01-30 00:24:05,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:05,544 INFO L225 Difference]: With dead ends: 458 [2018-01-30 00:24:05,544 INFO L226 Difference]: Without dead ends: 357 [2018-01-30 00:24:05,545 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=354, Invalid=1286, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 00:24:05,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-01-30 00:24:05,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 270. [2018-01-30 00:24:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-01-30 00:24:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 312 transitions. [2018-01-30 00:24:05,569 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 312 transitions. Word has length 200 [2018-01-30 00:24:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:05,569 INFO L432 AbstractCegarLoop]: Abstraction has 270 states and 312 transitions. [2018-01-30 00:24:05,569 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-30 00:24:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 312 transitions. [2018-01-30 00:24:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-01-30 00:24:05,576 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:05,577 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:05,577 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:05,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1602387280, now seen corresponding path program 3 times [2018-01-30 00:24:05,577 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:05,577 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:05,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:05,577 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:05,577 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:05,603 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2018-01-30 00:24:05,879 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:05,879 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:05,884 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:24:05,896 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:05,900 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:05,903 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:05,907 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:05,911 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:05,912 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:05,914 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2018-01-30 00:24:06,021 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:06,021 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-01-30 00:24:06,021 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:24:06,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:24:06,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:24:06,022 INFO L87 Difference]: Start difference. First operand 270 states and 312 transitions. Second operand 19 states. [2018-01-30 00:24:06,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:06,276 INFO L93 Difference]: Finished difference Result 396 states and 450 transitions. [2018-01-30 00:24:06,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 00:24:06,276 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 230 [2018-01-30 00:24:06,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:06,278 INFO L225 Difference]: With dead ends: 396 [2018-01-30 00:24:06,278 INFO L226 Difference]: Without dead ends: 380 [2018-01-30 00:24:06,278 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=837, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 00:24:06,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-01-30 00:24:06,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 286. [2018-01-30 00:24:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-01-30 00:24:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 330 transitions. [2018-01-30 00:24:06,287 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 330 transitions. Word has length 230 [2018-01-30 00:24:06,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:06,288 INFO L432 AbstractCegarLoop]: Abstraction has 286 states and 330 transitions. [2018-01-30 00:24:06,288 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:24:06,288 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 330 transitions. [2018-01-30 00:24:06,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-01-30 00:24:06,289 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:06,289 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:06,289 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:06,289 INFO L82 PathProgramCache]: Analyzing trace with hash 2081117015, now seen corresponding path program 2 times [2018-01-30 00:24:06,289 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:06,289 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:06,290 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:06,290 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:06,290 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:06,300 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2018-01-30 00:24:06,829 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:06,829 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:06,833 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:24:06,847 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:06,863 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:06,867 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:06,869 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 197 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-01-30 00:24:07,098 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:07,098 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18] total 26 [2018-01-30 00:24:07,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-30 00:24:07,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-30 00:24:07,099 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2018-01-30 00:24:07,099 INFO L87 Difference]: Start difference. First operand 286 states and 330 transitions. Second operand 26 states. [2018-01-30 00:24:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:08,965 INFO L93 Difference]: Finished difference Result 541 states and 617 transitions. [2018-01-30 00:24:08,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-30 00:24:08,965 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 230 [2018-01-30 00:24:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:08,966 INFO L225 Difference]: With dead ends: 541 [2018-01-30 00:24:08,966 INFO L226 Difference]: Without dead ends: 414 [2018-01-30 00:24:08,967 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=569, Invalid=2623, Unknown=0, NotChecked=0, Total=3192 [2018-01-30 00:24:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-01-30 00:24:08,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 302. [2018-01-30 00:24:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-01-30 00:24:08,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 351 transitions. [2018-01-30 00:24:08,978 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 351 transitions. Word has length 230 [2018-01-30 00:24:08,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:08,978 INFO L432 AbstractCegarLoop]: Abstraction has 302 states and 351 transitions. [2018-01-30 00:24:08,978 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-30 00:24:08,978 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 351 transitions. [2018-01-30 00:24:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-01-30 00:24:08,979 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:08,979 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:08,979 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:08,979 INFO L82 PathProgramCache]: Analyzing trace with hash -709292898, now seen corresponding path program 3 times [2018-01-30 00:24:08,979 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:08,979 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:08,980 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:08,980 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:08,980 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:08,990 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-01-30 00:24:09,146 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:09,146 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:09,151 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:24:09,168 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:09,176 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:09,180 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:09,181 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:09,184 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-01-30 00:24:09,316 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:09,316 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-01-30 00:24:09,316 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:24:09,316 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:24:09,316 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:24:09,316 INFO L87 Difference]: Start difference. First operand 302 states and 351 transitions. Second operand 19 states. [2018-01-30 00:24:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:09,991 INFO L93 Difference]: Finished difference Result 423 states and 482 transitions. [2018-01-30 00:24:09,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 00:24:09,991 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 252 [2018-01-30 00:24:09,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:09,992 INFO L225 Difference]: With dead ends: 423 [2018-01-30 00:24:09,992 INFO L226 Difference]: Without dead ends: 407 [2018-01-30 00:24:09,993 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=681, Unknown=0, NotChecked=0, Total=930 [2018-01-30 00:24:09,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-01-30 00:24:10,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 302. [2018-01-30 00:24:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2018-01-30 00:24:10,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 351 transitions. [2018-01-30 00:24:10,003 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 351 transitions. Word has length 252 [2018-01-30 00:24:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:10,003 INFO L432 AbstractCegarLoop]: Abstraction has 302 states and 351 transitions. [2018-01-30 00:24:10,003 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:24:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 351 transitions. [2018-01-30 00:24:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-01-30 00:24:10,004 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:10,004 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:10,004 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:10,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1703497915, now seen corresponding path program 3 times [2018-01-30 00:24:10,005 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:10,005 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:10,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:10,005 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:10,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:10,015 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:10,435 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-01-30 00:24:10,435 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:10,435 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:10,441 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:24:10,456 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:10,460 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:10,464 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:10,469 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:10,470 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:10,472 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-01-30 00:24:10,637 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:10,637 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-01-30 00:24:10,637 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-30 00:24:10,638 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-30 00:24:10,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2018-01-30 00:24:10,638 INFO L87 Difference]: Start difference. First operand 302 states and 351 transitions. Second operand 19 states. [2018-01-30 00:24:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:10,882 INFO L93 Difference]: Finished difference Result 421 states and 480 transitions. [2018-01-30 00:24:10,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-30 00:24:10,882 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 252 [2018-01-30 00:24:10,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:10,883 INFO L225 Difference]: With dead ends: 421 [2018-01-30 00:24:10,884 INFO L226 Difference]: Without dead ends: 405 [2018-01-30 00:24:10,884 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2018-01-30 00:24:10,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-01-30 00:24:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 312. [2018-01-30 00:24:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-01-30 00:24:10,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 361 transitions. [2018-01-30 00:24:10,900 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 361 transitions. Word has length 252 [2018-01-30 00:24:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:10,900 INFO L432 AbstractCegarLoop]: Abstraction has 312 states and 361 transitions. [2018-01-30 00:24:10,900 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-30 00:24:10,900 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 361 transitions. [2018-01-30 00:24:10,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-01-30 00:24:10,901 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:10,901 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:10,901 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:10,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1926015904, now seen corresponding path program 4 times [2018-01-30 00:24:10,902 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:10,902 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:10,902 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:10,902 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:10,902 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:10,911 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-01-30 00:24:11,594 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:11,594 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:11,599 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:24:11,631 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:11,634 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 284 proven. 150 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2018-01-30 00:24:12,119 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:12,119 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 28] total 39 [2018-01-30 00:24:12,119 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-30 00:24:12,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-30 00:24:12,120 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 00:24:12,120 INFO L87 Difference]: Start difference. First operand 312 states and 361 transitions. Second operand 39 states. [2018-01-30 00:24:13,268 WARN L146 SmtUtils]: Spent 138ms on a formula simplification. DAG size of input: 21 DAG size of output 13 [2018-01-30 00:24:13,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:13,641 INFO L93 Difference]: Finished difference Result 456 states and 518 transitions. [2018-01-30 00:24:13,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-30 00:24:13,641 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 260 [2018-01-30 00:24:13,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:13,643 INFO L225 Difference]: With dead ends: 456 [2018-01-30 00:24:13,643 INFO L226 Difference]: Without dead ends: 440 [2018-01-30 00:24:13,645 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1644 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1621, Invalid=6035, Unknown=0, NotChecked=0, Total=7656 [2018-01-30 00:24:13,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2018-01-30 00:24:13,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 328. [2018-01-30 00:24:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-01-30 00:24:13,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 379 transitions. [2018-01-30 00:24:13,681 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 379 transitions. Word has length 260 [2018-01-30 00:24:13,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:13,681 INFO L432 AbstractCegarLoop]: Abstraction has 328 states and 379 transitions. [2018-01-30 00:24:13,681 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-30 00:24:13,681 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 379 transitions. [2018-01-30 00:24:13,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-01-30 00:24:13,682 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:13,682 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:13,682 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:13,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1314552903, now seen corresponding path program 4 times [2018-01-30 00:24:13,682 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:13,682 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:13,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:13,683 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:13,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:13,707 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:14,016 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-01-30 00:24:14,016 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:14,016 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:14,021 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:24:14,058 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:14,060 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:14,610 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 284 proven. 119 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2018-01-30 00:24:14,630 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:14,630 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 28] total 39 [2018-01-30 00:24:14,630 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-30 00:24:14,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-30 00:24:14,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 00:24:14,631 INFO L87 Difference]: Start difference. First operand 328 states and 379 transitions. Second operand 39 states. [2018-01-30 00:24:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:16,178 INFO L93 Difference]: Finished difference Result 469 states and 531 transitions. [2018-01-30 00:24:16,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-30 00:24:16,178 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 260 [2018-01-30 00:24:16,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:16,179 INFO L225 Difference]: With dead ends: 469 [2018-01-30 00:24:16,179 INFO L226 Difference]: Without dead ends: 453 [2018-01-30 00:24:16,181 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1452, Invalid=5688, Unknown=0, NotChecked=0, Total=7140 [2018-01-30 00:24:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-01-30 00:24:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 328. [2018-01-30 00:24:16,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-01-30 00:24:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 379 transitions. [2018-01-30 00:24:16,193 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 379 transitions. Word has length 260 [2018-01-30 00:24:16,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:16,193 INFO L432 AbstractCegarLoop]: Abstraction has 328 states and 379 transitions. [2018-01-30 00:24:16,193 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-30 00:24:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 379 transitions. [2018-01-30 00:24:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-01-30 00:24:16,194 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:16,194 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:16,194 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:16,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1615022610, now seen corresponding path program 5 times [2018-01-30 00:24:16,194 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:16,194 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:16,195 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:16,195 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:16,195 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:16,204 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-01-30 00:24:16,429 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:16,429 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:16,434 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:24:16,446 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:16,449 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:16,451 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:16,454 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:16,457 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:16,461 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:16,466 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:16,471 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:16,478 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:16,479 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:16,481 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2018-01-30 00:24:16,762 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:16,762 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20] total 30 [2018-01-30 00:24:16,762 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-30 00:24:16,763 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-30 00:24:16,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2018-01-30 00:24:16,763 INFO L87 Difference]: Start difference. First operand 328 states and 379 transitions. Second operand 30 states. [2018-01-30 00:24:17,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:17,733 INFO L93 Difference]: Finished difference Result 644 states and 730 transitions. [2018-01-30 00:24:17,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-30 00:24:17,733 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 260 [2018-01-30 00:24:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:17,735 INFO L225 Difference]: With dead ends: 644 [2018-01-30 00:24:17,735 INFO L226 Difference]: Without dead ends: 491 [2018-01-30 00:24:17,736 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=724, Invalid=3566, Unknown=0, NotChecked=0, Total=4290 [2018-01-30 00:24:17,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-01-30 00:24:17,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 344. [2018-01-30 00:24:17,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-01-30 00:24:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 400 transitions. [2018-01-30 00:24:17,774 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 400 transitions. Word has length 260 [2018-01-30 00:24:17,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:17,774 INFO L432 AbstractCegarLoop]: Abstraction has 344 states and 400 transitions. [2018-01-30 00:24:17,774 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-30 00:24:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 400 transitions. [2018-01-30 00:24:17,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-01-30 00:24:17,775 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:17,775 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:17,775 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:17,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1537556427, now seen corresponding path program 6 times [2018-01-30 00:24:17,775 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:17,775 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:17,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:17,777 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:17,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:17,799 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-01-30 00:24:18,554 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:18,554 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:18,558 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:24:18,575 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:18,589 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:18,602 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:18,614 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:18,629 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:18,641 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:18,655 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:18,666 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:18,669 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-01-30 00:24:18,935 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:18,936 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2018-01-30 00:24:18,936 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 00:24:18,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 00:24:18,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2018-01-30 00:24:18,936 INFO L87 Difference]: Start difference. First operand 344 states and 400 transitions. Second operand 23 states. [2018-01-30 00:24:19,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:19,285 INFO L93 Difference]: Finished difference Result 492 states and 559 transitions. [2018-01-30 00:24:19,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-30 00:24:19,285 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 282 [2018-01-30 00:24:19,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:19,287 INFO L225 Difference]: With dead ends: 492 [2018-01-30 00:24:19,287 INFO L226 Difference]: Without dead ends: 476 [2018-01-30 00:24:19,287 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 00:24:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2018-01-30 00:24:19,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 344. [2018-01-30 00:24:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-01-30 00:24:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 400 transitions. [2018-01-30 00:24:19,304 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 400 transitions. Word has length 282 [2018-01-30 00:24:19,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:19,304 INFO L432 AbstractCegarLoop]: Abstraction has 344 states and 400 transitions. [2018-01-30 00:24:19,304 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 00:24:19,304 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 400 transitions. [2018-01-30 00:24:19,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-01-30 00:24:19,305 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:19,306 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:19,306 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:19,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1660603356, now seen corresponding path program 4 times [2018-01-30 00:24:19,307 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:19,307 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:19,307 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:19,307 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:19,307 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:19,319 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-01-30 00:24:19,555 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:19,555 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:19,560 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:24:19,598 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:19,602 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 361 proven. 131 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2018-01-30 00:24:20,592 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:20,592 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 30] total 41 [2018-01-30 00:24:20,592 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-30 00:24:20,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-30 00:24:20,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1438, Unknown=0, NotChecked=0, Total=1640 [2018-01-30 00:24:20,593 INFO L87 Difference]: Start difference. First operand 344 states and 400 transitions. Second operand 41 states. [2018-01-30 00:24:21,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:21,666 INFO L93 Difference]: Finished difference Result 482 states and 549 transitions. [2018-01-30 00:24:21,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-30 00:24:21,666 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 282 [2018-01-30 00:24:21,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:21,668 INFO L225 Difference]: With dead ends: 482 [2018-01-30 00:24:21,668 INFO L226 Difference]: Without dead ends: 466 [2018-01-30 00:24:21,669 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1298, Invalid=5182, Unknown=0, NotChecked=0, Total=6480 [2018-01-30 00:24:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2018-01-30 00:24:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 354. [2018-01-30 00:24:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-01-30 00:24:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 410 transitions. [2018-01-30 00:24:21,684 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 410 transitions. Word has length 282 [2018-01-30 00:24:21,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:21,685 INFO L432 AbstractCegarLoop]: Abstraction has 354 states and 410 transitions. [2018-01-30 00:24:21,685 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-30 00:24:21,685 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 410 transitions. [2018-01-30 00:24:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-01-30 00:24:21,686 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:21,686 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:21,686 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:21,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1614230384, now seen corresponding path program 5 times [2018-01-30 00:24:21,686 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:21,686 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:21,687 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:21,687 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:21,687 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:21,696 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:22,308 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-01-30 00:24:22,308 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:22,308 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:22,314 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:24:22,329 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:22,338 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:22,351 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:22,365 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:22,378 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:22,384 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:22,389 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:22,394 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:22,399 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:22,405 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:22,407 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:22,410 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:22,603 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-01-30 00:24:22,621 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:22,622 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2018-01-30 00:24:22,622 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 00:24:22,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 00:24:22,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2018-01-30 00:24:22,622 INFO L87 Difference]: Start difference. First operand 354 states and 410 transitions. Second operand 27 states. [2018-01-30 00:24:23,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:23,037 INFO L93 Difference]: Finished difference Result 516 states and 586 transitions. [2018-01-30 00:24:23,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-30 00:24:23,037 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 290 [2018-01-30 00:24:23,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:23,039 INFO L225 Difference]: With dead ends: 516 [2018-01-30 00:24:23,039 INFO L226 Difference]: Without dead ends: 500 [2018-01-30 00:24:23,039 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=768, Invalid=1988, Unknown=0, NotChecked=0, Total=2756 [2018-01-30 00:24:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2018-01-30 00:24:23,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 370. [2018-01-30 00:24:23,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-01-30 00:24:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 428 transitions. [2018-01-30 00:24:23,055 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 428 transitions. Word has length 290 [2018-01-30 00:24:23,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:23,056 INFO L432 AbstractCegarLoop]: Abstraction has 370 states and 428 transitions. [2018-01-30 00:24:23,056 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 00:24:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 428 transitions. [2018-01-30 00:24:23,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-01-30 00:24:23,057 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:23,057 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:23,057 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:23,057 INFO L82 PathProgramCache]: Analyzing trace with hash 2069273911, now seen corresponding path program 7 times [2018-01-30 00:24:23,057 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:23,057 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:23,058 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:23,058 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:23,058 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:23,067 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-01-30 00:24:23,382 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:23,382 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:23,387 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:24:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:23,422 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2018-01-30 00:24:23,679 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:23,679 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22] total 34 [2018-01-30 00:24:23,679 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-30 00:24:23,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-30 00:24:23,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2018-01-30 00:24:23,680 INFO L87 Difference]: Start difference. First operand 370 states and 428 transitions. Second operand 34 states. [2018-01-30 00:24:24,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:24,964 INFO L93 Difference]: Finished difference Result 729 states and 825 transitions. [2018-01-30 00:24:24,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-01-30 00:24:24,964 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 290 [2018-01-30 00:24:24,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:24,966 INFO L225 Difference]: With dead ends: 729 [2018-01-30 00:24:24,966 INFO L226 Difference]: Without dead ends: 550 [2018-01-30 00:24:24,967 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1062, Invalid=5418, Unknown=0, NotChecked=0, Total=6480 [2018-01-30 00:24:24,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2018-01-30 00:24:24,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 386. [2018-01-30 00:24:24,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2018-01-30 00:24:24,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 449 transitions. [2018-01-30 00:24:24,989 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 449 transitions. Word has length 290 [2018-01-30 00:24:24,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:24,989 INFO L432 AbstractCegarLoop]: Abstraction has 386 states and 449 transitions. [2018-01-30 00:24:24,989 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-30 00:24:24,989 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 449 transitions. [2018-01-30 00:24:24,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-30 00:24:24,991 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:24,991 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:24,991 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:24,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1096276354, now seen corresponding path program 8 times [2018-01-30 00:24:24,991 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:24,991 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:24,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:24,992 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:24:24,992 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:25,007 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2018-01-30 00:24:25,331 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:25,331 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:25,335 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:24:25,346 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:25,369 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:25,374 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:25,376 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2018-01-30 00:24:25,770 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:25,770 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 24] total 36 [2018-01-30 00:24:25,770 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 00:24:25,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 00:24:25,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 00:24:25,771 INFO L87 Difference]: Start difference. First operand 386 states and 449 transitions. Second operand 36 states. [2018-01-30 00:24:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:26,793 INFO L93 Difference]: Finished difference Result 762 states and 863 transitions. [2018-01-30 00:24:26,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-01-30 00:24:26,795 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 312 [2018-01-30 00:24:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:26,797 INFO L225 Difference]: With dead ends: 762 [2018-01-30 00:24:26,797 INFO L226 Difference]: Without dead ends: 583 [2018-01-30 00:24:26,798 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1374 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1078, Invalid=5564, Unknown=0, NotChecked=0, Total=6642 [2018-01-30 00:24:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2018-01-30 00:24:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 402. [2018-01-30 00:24:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2018-01-30 00:24:26,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 470 transitions. [2018-01-30 00:24:26,847 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 470 transitions. Word has length 312 [2018-01-30 00:24:26,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:26,847 INFO L432 AbstractCegarLoop]: Abstraction has 402 states and 470 transitions. [2018-01-30 00:24:26,847 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 00:24:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 470 transitions. [2018-01-30 00:24:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-01-30 00:24:26,849 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:26,849 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:26,849 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1969201349, now seen corresponding path program 9 times [2018-01-30 00:24:26,850 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:26,850 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:26,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:26,851 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:26,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:26,869 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:27,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2018-01-30 00:24:27,539 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:27,539 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:27,544 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:24:27,563 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:27,575 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:27,588 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:27,593 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:27,594 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:27,597 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2018-01-30 00:24:27,838 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:27,838 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2018-01-30 00:24:27,838 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-30 00:24:27,839 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-30 00:24:27,839 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2018-01-30 00:24:27,839 INFO L87 Difference]: Start difference. First operand 402 states and 470 transitions. Second operand 27 states. [2018-01-30 00:24:28,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:28,246 INFO L93 Difference]: Finished difference Result 587 states and 667 transitions. [2018-01-30 00:24:28,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 00:24:28,246 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 334 [2018-01-30 00:24:28,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:28,247 INFO L225 Difference]: With dead ends: 587 [2018-01-30 00:24:28,248 INFO L226 Difference]: Without dead ends: 571 [2018-01-30 00:24:28,248 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=519, Invalid=1643, Unknown=0, NotChecked=0, Total=2162 [2018-01-30 00:24:28,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2018-01-30 00:24:28,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 402. [2018-01-30 00:24:28,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2018-01-30 00:24:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 470 transitions. [2018-01-30 00:24:28,267 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 470 transitions. Word has length 334 [2018-01-30 00:24:28,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:28,268 INFO L432 AbstractCegarLoop]: Abstraction has 402 states and 470 transitions. [2018-01-30 00:24:28,268 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-30 00:24:28,268 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 470 transitions. [2018-01-30 00:24:28,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-01-30 00:24:28,269 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:28,269 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:28,269 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:28,269 INFO L82 PathProgramCache]: Analyzing trace with hash 872393836, now seen corresponding path program 10 times [2018-01-30 00:24:28,269 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:28,269 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:28,270 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:28,270 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:28,270 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:28,279 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:28,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2018-01-30 00:24:28,546 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:28,546 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:28,553 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:24:28,595 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:28,598 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 542 proven. 158 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2018-01-30 00:24:29,033 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:29,033 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 36] total 49 [2018-01-30 00:24:29,033 INFO L409 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-01-30 00:24:29,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-01-30 00:24:29,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=2091, Unknown=0, NotChecked=0, Total=2352 [2018-01-30 00:24:29,034 INFO L87 Difference]: Start difference. First operand 402 states and 470 transitions. Second operand 49 states. [2018-01-30 00:24:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:30,659 INFO L93 Difference]: Finished difference Result 577 states and 657 transitions. [2018-01-30 00:24:30,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-01-30 00:24:30,660 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 334 [2018-01-30 00:24:30,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:30,661 INFO L225 Difference]: With dead ends: 577 [2018-01-30 00:24:30,661 INFO L226 Difference]: Without dead ends: 561 [2018-01-30 00:24:30,662 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1940, Invalid=8160, Unknown=0, NotChecked=0, Total=10100 [2018-01-30 00:24:30,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2018-01-30 00:24:30,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 402. [2018-01-30 00:24:30,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2018-01-30 00:24:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 470 transitions. [2018-01-30 00:24:30,682 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 470 transitions. Word has length 334 [2018-01-30 00:24:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:30,683 INFO L432 AbstractCegarLoop]: Abstraction has 402 states and 470 transitions. [2018-01-30 00:24:30,683 INFO L433 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-01-30 00:24:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 470 transitions. [2018-01-30 00:24:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-01-30 00:24:30,684 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:30,684 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:30,684 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:30,684 INFO L82 PathProgramCache]: Analyzing trace with hash -66510573, now seen corresponding path program 5 times [2018-01-30 00:24:30,684 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:30,684 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:30,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:30,685 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:30,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:30,694 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2018-01-30 00:24:31,209 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:31,209 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:31,214 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:24:31,228 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,231 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,234 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,237 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,240 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,244 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,248 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,253 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,258 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,264 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,272 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,288 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:31,289 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:31,292 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-01-30 00:24:31,680 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:31,680 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 26] total 38 [2018-01-30 00:24:31,681 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-30 00:24:31,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-30 00:24:31,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1161, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 00:24:31,681 INFO L87 Difference]: Start difference. First operand 402 states and 470 transitions. Second operand 38 states. [2018-01-30 00:24:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:32,869 INFO L93 Difference]: Finished difference Result 751 states and 857 transitions. [2018-01-30 00:24:32,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-01-30 00:24:32,869 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 334 [2018-01-30 00:24:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:32,871 INFO L225 Difference]: With dead ends: 751 [2018-01-30 00:24:32,871 INFO L226 Difference]: Without dead ends: 572 [2018-01-30 00:24:32,872 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1062, Invalid=4638, Unknown=0, NotChecked=0, Total=5700 [2018-01-30 00:24:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2018-01-30 00:24:32,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 428. [2018-01-30 00:24:32,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2018-01-30 00:24:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 501 transitions. [2018-01-30 00:24:32,897 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 501 transitions. Word has length 334 [2018-01-30 00:24:32,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:32,897 INFO L432 AbstractCegarLoop]: Abstraction has 428 states and 501 transitions. [2018-01-30 00:24:32,898 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-30 00:24:32,898 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 501 transitions. [2018-01-30 00:24:32,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-01-30 00:24:32,899 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:32,899 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 8, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:32,899 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:32,899 INFO L82 PathProgramCache]: Analyzing trace with hash -28255040, now seen corresponding path program 6 times [2018-01-30 00:24:32,899 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:32,900 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:32,900 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:32,900 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:32,900 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:32,912 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 1421 trivial. 0 not checked. [2018-01-30 00:24:33,314 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:33,314 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:33,318 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:24:33,331 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:33,335 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:33,339 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:33,342 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:33,346 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:33,349 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:33,358 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:33,361 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:33,366 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:33,367 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:33,370 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:33,617 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-01-30 00:24:33,624 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-01-30 00:24:33,624 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-30 00:24:33,625 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:24:33,625 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:24:33,625 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-01-30 00:24:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 1474 trivial. 0 not checked. [2018-01-30 00:24:33,766 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:33,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 29 [2018-01-30 00:24:33,766 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-30 00:24:33,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-30 00:24:33,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2018-01-30 00:24:33,767 INFO L87 Difference]: Start difference. First operand 428 states and 501 transitions. Second operand 29 states. [2018-01-30 00:24:35,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:35,780 INFO L93 Difference]: Finished difference Result 788 states and 896 transitions. [2018-01-30 00:24:35,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-01-30 00:24:35,781 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 364 [2018-01-30 00:24:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:35,782 INFO L225 Difference]: With dead ends: 788 [2018-01-30 00:24:35,782 INFO L226 Difference]: Without dead ends: 772 [2018-01-30 00:24:35,783 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3434 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1658, Invalid=9054, Unknown=0, NotChecked=0, Total=10712 [2018-01-30 00:24:35,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2018-01-30 00:24:35,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 564. [2018-01-30 00:24:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2018-01-30 00:24:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 654 transitions. [2018-01-30 00:24:35,818 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 654 transitions. Word has length 364 [2018-01-30 00:24:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:35,819 INFO L432 AbstractCegarLoop]: Abstraction has 564 states and 654 transitions. [2018-01-30 00:24:35,819 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-30 00:24:35,819 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 654 transitions. [2018-01-30 00:24:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-01-30 00:24:35,820 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:35,820 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 7, 6, 6, 6, 6, 6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:35,820 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:35,821 INFO L82 PathProgramCache]: Analyzing trace with hash -639718041, now seen corresponding path program 11 times [2018-01-30 00:24:35,821 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:35,821 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:35,821 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:35,821 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:35,821 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:35,831 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 1421 trivial. 0 not checked. [2018-01-30 00:24:36,351 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:36,351 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:36,355 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:24:36,369 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,372 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,374 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,377 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,389 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,404 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,414 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,418 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,423 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,427 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,433 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,441 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,448 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:36,450 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:36,453 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2018-01-30 00:24:37,131 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:37,131 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 28] total 42 [2018-01-30 00:24:37,131 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-30 00:24:37,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-30 00:24:37,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1439, Unknown=0, NotChecked=0, Total=1722 [2018-01-30 00:24:37,131 INFO L87 Difference]: Start difference. First operand 564 states and 654 transitions. Second operand 42 states. [2018-01-30 00:24:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:38,689 INFO L93 Difference]: Finished difference Result 1095 states and 1241 transitions. [2018-01-30 00:24:38,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-30 00:24:38,689 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 364 [2018-01-30 00:24:38,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:38,691 INFO L225 Difference]: With dead ends: 1095 [2018-01-30 00:24:38,691 INFO L226 Difference]: Without dead ends: 770 [2018-01-30 00:24:38,692 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2235 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1621, Invalid=8479, Unknown=0, NotChecked=0, Total=10100 [2018-01-30 00:24:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2018-01-30 00:24:38,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 580. [2018-01-30 00:24:38,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2018-01-30 00:24:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 675 transitions. [2018-01-30 00:24:38,724 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 675 transitions. Word has length 364 [2018-01-30 00:24:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:38,724 INFO L432 AbstractCegarLoop]: Abstraction has 580 states and 675 transitions. [2018-01-30 00:24:38,724 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-30 00:24:38,724 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 675 transitions. [2018-01-30 00:24:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-01-30 00:24:38,726 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:38,726 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 6, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:38,726 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:38,726 INFO L82 PathProgramCache]: Analyzing trace with hash -763613522, now seen corresponding path program 12 times [2018-01-30 00:24:38,726 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:38,726 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:38,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:38,727 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:38,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:38,736 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2018-01-30 00:24:39,011 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:39,011 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:39,019 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:24:39,035 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:39,039 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:39,043 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:39,046 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:39,051 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:39,055 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:39,060 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:39,064 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:39,069 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:39,070 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:39,074 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:39,197 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-01-30 00:24:39,199 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-01-30 00:24:39,199 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-30 00:24:39,200 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:24:39,225 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:24:39,225 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:3 [2018-01-30 00:24:39,331 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2018-01-30 00:24:39,337 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2018-01-30 00:24:39,338 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-01-30 00:24:39,344 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-30 00:24:39,352 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-01-30 00:24:39,352 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:30 [2018-01-30 00:24:39,424 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 22 [2018-01-30 00:24:39,426 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-01-30 00:24:39,426 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-30 00:24:39,430 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:24:39,442 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2018-01-30 00:24:39,449 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2018-01-30 00:24:39,450 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-01-30 00:24:39,459 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-30 00:24:39,473 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-01-30 00:24:39,473 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:56, output treesize:40 [2018-01-30 00:24:39,584 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-01-30 00:24:39,615 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-01-30 00:24:39,616 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-30 00:24:39,639 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:24:39,659 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-30 00:24:39,659 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-01-30 00:24:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2018-01-30 00:24:39,962 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:39,962 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23] total 37 [2018-01-30 00:24:39,962 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-01-30 00:24:39,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-01-30 00:24:39,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2018-01-30 00:24:39,963 INFO L87 Difference]: Start difference. First operand 580 states and 675 transitions. Second operand 37 states. [2018-01-30 00:24:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:41,896 INFO L93 Difference]: Finished difference Result 970 states and 1087 transitions. [2018-01-30 00:24:41,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-01-30 00:24:41,897 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 386 [2018-01-30 00:24:41,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:41,899 INFO L225 Difference]: With dead ends: 970 [2018-01-30 00:24:41,899 INFO L226 Difference]: Without dead ends: 954 [2018-01-30 00:24:41,900 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3292 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1682, Invalid=9030, Unknown=0, NotChecked=0, Total=10712 [2018-01-30 00:24:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-01-30 00:24:41,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 612. [2018-01-30 00:24:41,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2018-01-30 00:24:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 709 transitions. [2018-01-30 00:24:41,943 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 709 transitions. Word has length 386 [2018-01-30 00:24:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:41,943 INFO L432 AbstractCegarLoop]: Abstraction has 612 states and 709 transitions. [2018-01-30 00:24:41,943 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-01-30 00:24:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 709 transitions. [2018-01-30 00:24:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-01-30 00:24:41,945 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:41,945 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:41,945 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:41,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1757818539, now seen corresponding path program 13 times [2018-01-30 00:24:41,945 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:41,945 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:41,945 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:41,946 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:41,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:41,955 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2018-01-30 00:24:42,297 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:42,297 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:42,301 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:24:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:42,347 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:42,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1765 backedges. 0 proven. 716 refuted. 0 times theorem prover too weak. 1049 trivial. 0 not checked. [2018-01-30 00:24:42,898 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:42,899 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 30] total 44 [2018-01-30 00:24:42,899 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-30 00:24:42,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-30 00:24:42,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1582, Unknown=0, NotChecked=0, Total=1892 [2018-01-30 00:24:42,899 INFO L87 Difference]: Start difference. First operand 612 states and 709 transitions. Second operand 44 states. [2018-01-30 00:24:44,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:44,653 INFO L93 Difference]: Finished difference Result 1225 states and 1382 transitions. [2018-01-30 00:24:44,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-30 00:24:44,654 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 386 [2018-01-30 00:24:44,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:44,655 INFO L225 Difference]: With dead ends: 1225 [2018-01-30 00:24:44,655 INFO L226 Difference]: Without dead ends: 868 [2018-01-30 00:24:44,656 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2013 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1555, Invalid=8147, Unknown=0, NotChecked=0, Total=9702 [2018-01-30 00:24:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2018-01-30 00:24:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 628. [2018-01-30 00:24:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2018-01-30 00:24:44,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 730 transitions. [2018-01-30 00:24:44,697 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 730 transitions. Word has length 386 [2018-01-30 00:24:44,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:44,697 INFO L432 AbstractCegarLoop]: Abstraction has 628 states and 730 transitions. [2018-01-30 00:24:44,697 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-30 00:24:44,697 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 730 transitions. [2018-01-30 00:24:44,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-01-30 00:24:44,699 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:44,699 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:44,699 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:44,699 INFO L82 PathProgramCache]: Analyzing trace with hash 794143900, now seen corresponding path program 14 times [2018-01-30 00:24:44,699 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:44,700 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:44,700 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:44,700 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:24:44,700 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:44,710 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2049 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 1965 trivial. 0 not checked. [2018-01-30 00:24:45,169 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:45,169 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:45,175 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 00:24:45,189 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:45,219 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:45,227 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:45,230 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2049 backedges. 0 proven. 834 refuted. 0 times theorem prover too weak. 1215 trivial. 0 not checked. [2018-01-30 00:24:47,194 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:47,194 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 32] total 46 [2018-01-30 00:24:47,194 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-30 00:24:47,195 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-30 00:24:47,195 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1726, Unknown=0, NotChecked=0, Total=2070 [2018-01-30 00:24:47,195 INFO L87 Difference]: Start difference. First operand 628 states and 730 transitions. Second operand 46 states. [2018-01-30 00:24:48,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:48,790 INFO L93 Difference]: Finished difference Result 1245 states and 1408 transitions. [2018-01-30 00:24:48,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-01-30 00:24:48,791 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 408 [2018-01-30 00:24:48,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:48,793 INFO L225 Difference]: With dead ends: 1245 [2018-01-30 00:24:48,793 INFO L226 Difference]: Without dead ends: 888 [2018-01-30 00:24:48,795 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1977 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1642, Invalid=8258, Unknown=0, NotChecked=0, Total=9900 [2018-01-30 00:24:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2018-01-30 00:24:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 644. [2018-01-30 00:24:48,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2018-01-30 00:24:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 751 transitions. [2018-01-30 00:24:48,840 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 751 transitions. Word has length 408 [2018-01-30 00:24:48,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:48,840 INFO L432 AbstractCegarLoop]: Abstraction has 644 states and 751 transitions. [2018-01-30 00:24:48,840 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-30 00:24:48,840 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 751 transitions. [2018-01-30 00:24:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-01-30 00:24:48,842 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:48,842 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:48,842 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:48,842 INFO L82 PathProgramCache]: Analyzing trace with hash 746944739, now seen corresponding path program 15 times [2018-01-30 00:24:48,842 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:48,842 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:48,843 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:48,843 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:48,843 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:48,865 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2371 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 2270 trivial. 0 not checked. [2018-01-30 00:24:49,617 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:49,617 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:49,623 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 00:24:49,637 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:49,641 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:49,645 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:49,649 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:49,653 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:49,658 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 00:24:49,659 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:49,661 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2371 backedges. 0 proven. 101 refuted. 0 times theorem prover too weak. 2270 trivial. 0 not checked. [2018-01-30 00:24:50,048 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:50,048 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2018-01-30 00:24:50,048 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 00:24:50,048 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 00:24:50,048 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=742, Unknown=0, NotChecked=0, Total=930 [2018-01-30 00:24:50,049 INFO L87 Difference]: Start difference. First operand 644 states and 751 transitions. Second operand 31 states. [2018-01-30 00:24:50,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:50,519 INFO L93 Difference]: Finished difference Result 884 states and 1008 transitions. [2018-01-30 00:24:50,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-30 00:24:50,519 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 430 [2018-01-30 00:24:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:50,521 INFO L225 Difference]: With dead ends: 884 [2018-01-30 00:24:50,521 INFO L226 Difference]: Without dead ends: 868 [2018-01-30 00:24:50,521 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=654, Invalid=1998, Unknown=0, NotChecked=0, Total=2652 [2018-01-30 00:24:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2018-01-30 00:24:50,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 644. [2018-01-30 00:24:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2018-01-30 00:24:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 751 transitions. [2018-01-30 00:24:50,564 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 751 transitions. Word has length 430 [2018-01-30 00:24:50,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:50,564 INFO L432 AbstractCegarLoop]: Abstraction has 644 states and 751 transitions. [2018-01-30 00:24:50,564 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 00:24:50,564 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 751 transitions. [2018-01-30 00:24:50,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-01-30 00:24:50,566 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:50,566 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 7, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:50,566 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:50,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1770039670, now seen corresponding path program 6 times [2018-01-30 00:24:50,566 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:50,567 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:50,567 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:50,567 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:50,567 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:50,577 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2270 trivial. 0 not checked. [2018-01-30 00:24:51,150 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:51,150 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:51,156 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:24:51,169 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,172 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,176 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,181 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,185 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,189 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,194 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,198 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,203 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,208 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,216 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,222 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,228 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:24:51,229 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:51,232 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 2270 trivial. 0 not checked. [2018-01-30 00:24:51,762 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:51,762 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2018-01-30 00:24:51,762 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 00:24:51,762 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 00:24:51,763 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2018-01-30 00:24:51,763 INFO L87 Difference]: Start difference. First operand 644 states and 751 transitions. Second operand 31 states. [2018-01-30 00:24:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:52,214 INFO L93 Difference]: Finished difference Result 809 states and 928 transitions. [2018-01-30 00:24:52,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 00:24:52,215 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 430 [2018-01-30 00:24:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:52,216 INFO L225 Difference]: With dead ends: 809 [2018-01-30 00:24:52,217 INFO L226 Difference]: Without dead ends: 793 [2018-01-30 00:24:52,217 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=675, Invalid=1775, Unknown=0, NotChecked=0, Total=2450 [2018-01-30 00:24:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2018-01-30 00:24:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 654. [2018-01-30 00:24:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2018-01-30 00:24:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 761 transitions. [2018-01-30 00:24:52,263 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 761 transitions. Word has length 430 [2018-01-30 00:24:52,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:52,263 INFO L432 AbstractCegarLoop]: Abstraction has 654 states and 761 transitions. [2018-01-30 00:24:52,264 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 00:24:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 761 transitions. [2018-01-30 00:24:52,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-01-30 00:24:52,265 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:52,265 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:52,265 INFO L371 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:52,266 INFO L82 PathProgramCache]: Analyzing trace with hash 334057957, now seen corresponding path program 16 times [2018-01-30 00:24:52,266 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:52,266 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:52,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:52,266 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:52,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:52,276 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2386 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 2270 trivial. 0 not checked. [2018-01-30 00:24:52,663 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:52,663 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:52,668 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 00:24:52,718 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:52,722 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2386 backedges. 1012 proven. 243 refuted. 0 times theorem prover too weak. 1131 trivial. 0 not checked. [2018-01-30 00:24:53,508 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:53,509 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 48] total 65 [2018-01-30 00:24:53,509 INFO L409 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-01-30 00:24:53,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-01-30 00:24:53,509 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=3730, Unknown=0, NotChecked=0, Total=4160 [2018-01-30 00:24:53,509 INFO L87 Difference]: Start difference. First operand 654 states and 761 transitions. Second operand 65 states. [2018-01-30 00:24:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:56,077 INFO L93 Difference]: Finished difference Result 907 states and 1028 transitions. [2018-01-30 00:24:56,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-30 00:24:56,078 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 438 [2018-01-30 00:24:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:56,080 INFO L225 Difference]: With dead ends: 907 [2018-01-30 00:24:56,080 INFO L226 Difference]: Without dead ends: 891 [2018-01-30 00:24:56,081 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3885, Invalid=16707, Unknown=0, NotChecked=0, Total=20592 [2018-01-30 00:24:56,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2018-01-30 00:24:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 652. [2018-01-30 00:24:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2018-01-30 00:24:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 759 transitions. [2018-01-30 00:24:56,127 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 759 transitions. Word has length 438 [2018-01-30 00:24:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:56,127 INFO L432 AbstractCegarLoop]: Abstraction has 652 states and 759 transitions. [2018-01-30 00:24:56,127 INFO L433 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-01-30 00:24:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 759 transitions. [2018-01-30 00:24:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-01-30 00:24:56,129 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:56,129 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:56,129 INFO L371 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:56,129 INFO L82 PathProgramCache]: Analyzing trace with hash -762749556, now seen corresponding path program 17 times [2018-01-30 00:24:56,130 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:56,130 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:56,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:56,130 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:56,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:56,140 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:24:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 2270 trivial. 0 not checked. [2018-01-30 00:24:56,795 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:24:56,795 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:24:56,800 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 00:24:56,813 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,816 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,821 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,824 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,827 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,830 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,833 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,837 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,841 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,844 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,848 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,853 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,860 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,868 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,877 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,888 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 00:24:56,890 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:24:56,893 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:24:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2018-01-30 00:24:57,675 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:24:57,675 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 34] total 50 [2018-01-30 00:24:57,675 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-30 00:24:57,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-30 00:24:57,675 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=2058, Unknown=0, NotChecked=0, Total=2450 [2018-01-30 00:24:57,676 INFO L87 Difference]: Start difference. First operand 652 states and 759 transitions. Second operand 50 states. [2018-01-30 00:24:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:24:59,516 INFO L93 Difference]: Finished difference Result 1305 states and 1472 transitions. [2018-01-30 00:24:59,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-30 00:24:59,516 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 438 [2018-01-30 00:24:59,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:24:59,518 INFO L225 Difference]: With dead ends: 1305 [2018-01-30 00:24:59,518 INFO L226 Difference]: Without dead ends: 940 [2018-01-30 00:24:59,520 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2598 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1967, Invalid=10465, Unknown=0, NotChecked=0, Total=12432 [2018-01-30 00:24:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2018-01-30 00:24:59,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 668. [2018-01-30 00:24:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2018-01-30 00:24:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 780 transitions. [2018-01-30 00:24:59,573 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 780 transitions. Word has length 438 [2018-01-30 00:24:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:24:59,573 INFO L432 AbstractCegarLoop]: Abstraction has 668 states and 780 transitions. [2018-01-30 00:24:59,573 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-30 00:24:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 780 transitions. [2018-01-30 00:24:59,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-01-30 00:24:59,575 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:24:59,575 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:24:59,575 INFO L371 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:24:59,575 INFO L82 PathProgramCache]: Analyzing trace with hash -154922541, now seen corresponding path program 18 times [2018-01-30 00:24:59,575 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:24:59,575 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:24:59,576 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:59,576 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:24:59,576 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:24:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:24:59,589 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 00:25:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2715 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 2597 trivial. 0 not checked. [2018-01-30 00:25:00,327 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:25:00,327 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:25:00,331 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 00:25:00,344 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:25:00,347 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:25:00,351 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:25:00,354 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:25:00,357 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:25:00,362 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:25:00,367 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:25:00,372 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:25:00,377 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:25:00,382 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:25:00,390 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 00:25:00,391 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 00:25:00,394 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:25:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2715 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 2597 trivial. 0 not checked. [2018-01-30 00:25:00,688 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 00:25:00,688 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35 [2018-01-30 00:25:00,688 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-30 00:25:00,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-30 00:25:00,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=964, Unknown=0, NotChecked=0, Total=1190 [2018-01-30 00:25:00,689 INFO L87 Difference]: Start difference. First operand 668 states and 780 transitions. Second operand 35 states. [2018-01-30 00:25:01,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 00:25:01,253 INFO L93 Difference]: Finished difference Result 939 states and 1067 transitions. [2018-01-30 00:25:01,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-30 00:25:01,253 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 460 [2018-01-30 00:25:01,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 00:25:01,255 INFO L225 Difference]: With dead ends: 939 [2018-01-30 00:25:01,255 INFO L226 Difference]: Without dead ends: 923 [2018-01-30 00:25:01,255 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=844, Invalid=2816, Unknown=0, NotChecked=0, Total=3660 [2018-01-30 00:25:01,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2018-01-30 00:25:01,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 668. [2018-01-30 00:25:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2018-01-30 00:25:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 780 transitions. [2018-01-30 00:25:01,307 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 780 transitions. Word has length 460 [2018-01-30 00:25:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 00:25:01,307 INFO L432 AbstractCegarLoop]: Abstraction has 668 states and 780 transitions. [2018-01-30 00:25:01,307 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-30 00:25:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 780 transitions. [2018-01-30 00:25:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-01-30 00:25:01,309 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 00:25:01,309 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 7, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 00:25:01,309 INFO L371 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 00:25:01,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1623060346, now seen corresponding path program 19 times [2018-01-30 00:25:01,309 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 00:25:01,309 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 00:25:01,310 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:25:01,310 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 00:25:01,310 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 00:25:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:25:01,320 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-30 00:25:01,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2740 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 2597 trivial. 0 not checked. [2018-01-30 00:25:01,818 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 00:25:01,818 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 00:25:01,823 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 00:25:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 00:25:01,876 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 00:25:01,878 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-30 00:25:01,879 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 00:25:01,882 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 00:25:01,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 12:25:01 BoogieIcfgContainer [2018-01-30 00:25:01,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 00:25:01,882 INFO L168 Benchmark]: Toolchain (without parser) took 64637.85 ms. Allocated memory was 147.8 MB in the beginning and 953.7 MB in the end (delta: 805.8 MB). Free memory was 113.0 MB in the beginning and 130.0 MB in the end (delta: -16.9 MB). Peak memory consumption was 788.9 MB. Max. memory is 5.3 GB. [2018-01-30 00:25:01,883 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 147.8 MB. Free memory is still 117.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 00:25:01,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.52 ms. Allocated memory is still 147.8 MB. Free memory was 112.8 MB in the beginning and 103.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 5.3 GB. [2018-01-30 00:25:01,883 INFO L168 Benchmark]: Boogie Preprocessor took 19.73 ms. Allocated memory is still 147.8 MB. Free memory was 103.9 MB in the beginning and 102.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. [2018-01-30 00:25:01,884 INFO L168 Benchmark]: RCFGBuilder took 390.11 ms. Allocated memory is still 147.8 MB. Free memory was 102.2 MB in the beginning and 80.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 5.3 GB. [2018-01-30 00:25:01,884 INFO L168 Benchmark]: TraceAbstraction took 64109.11 ms. Allocated memory was 147.8 MB in the beginning and 953.7 MB in the end (delta: 805.8 MB). Free memory was 80.2 MB in the beginning and 130.0 MB in the end (delta: -49.7 MB). Peak memory consumption was 756.1 MB. Max. memory is 5.3 GB. [2018-01-30 00:25:01,884 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 147.8 MB. Free memory is still 117.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 116.52 ms. Allocated memory is still 147.8 MB. Free memory was 112.8 MB in the beginning and 103.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 19.73 ms. Allocated memory is still 147.8 MB. Free memory was 103.9 MB in the beginning and 102.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 5.3 GB. * RCFGBuilder took 390.11 ms. Allocated memory is still 147.8 MB. Free memory was 102.2 MB in the beginning and 80.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 64109.11 ms. Allocated memory was 147.8 MB in the beginning and 953.7 MB in the end (delta: 805.8 MB). Free memory was 80.2 MB in the beginning and 130.0 MB in the end (delta: -49.7 MB). Peak memory consumption was 756.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was analyzing trace of length 461 with TraceHistMax 17, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 99 locations, 1 error locations. TIMEOUT Result, 64.0s OverallTime, 36 OverallIterations, 17 TraceHistogramMax, 33.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3757 SDtfs, 16601 SDslu, 54899 SDs, 0 SdLazy, 37149 SolverSat, 2416 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10721 GetRequests, 8707 SyntacticMatches, 2 SemanticMatches, 2012 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37637 ImplicationChecksByTransitivity, 35.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=668occurred in iteration=34, 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: 0.8s AutomataMinimizationTime, 35 MinimizatonAttempts, 4828 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 24.9s InterpolantComputationTime, 18507 NumberOfCodeBlocks, 17211 NumberOfCodeBlocksAsserted, 188 NumberOfCheckSat, 18440 ConstructedInterpolants, 0 QuantifiedInterpolants, 18856962 SizeOfPredicates, 589 NumberOfNonLiveVariables, 15899 ConjunctsInSsa, 656 ConjunctsInUnsatCore, 67 InterpolantComputations, 5 PerfectInterpolantSequences, 59372/68411 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/check_removal_from_set_after_insertion_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-30_00-25-01-888.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/check_removal_from_set_after_insertion_false-unreach-call.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_00-25-01-888.csv Completed graceful shutdown