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-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array3_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 12:42:32,933 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 12:42:32,934 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 12:42:32,947 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 12:42:32,947 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 12:42:32,948 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 12:42:32,949 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 12:42:32,951 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 12:42:32,953 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 12:42:32,954 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 12:42:32,955 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 12:42:32,955 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 12:42:32,956 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 12:42:32,958 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 12:42:32,958 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 12:42:32,961 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 12:42:32,963 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 12:42:32,965 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 12:42:32,966 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 12:42:32,967 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 12:42:32,970 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 12:42:32,975 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 12:42:32,975 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 12:42:32,976 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf [2018-01-24 12:42:32,985 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 12:42:32,986 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 12:42:32,987 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 12:42:32,987 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 12:42:32,987 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 12:42:32,987 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 12:42:32,988 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 12:42:32,988 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 12:42:32,988 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 12:42:32,989 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 12:42:32,989 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 12:42:32,989 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 12:42:32,989 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 12:42:32,989 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 12:42:32,990 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 12:42:32,990 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 12:42:32,990 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 12:42:32,990 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 12:42:32,990 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 12:42:32,991 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 12:42:32,991 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 12:42:32,991 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 12:42:32,991 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 12:42:32,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 12:42:32,992 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 12:42:32,992 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 12:42:32,992 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 12:42:32,992 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 12:42:32,993 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 12:42:32,993 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 12:42:32,993 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 12:42:32,993 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 12:42:32,994 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 12:42:32,994 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 12:42:33,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 12:42:33,042 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 12:42:33,046 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 12:42:33,048 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 12:42:33,048 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 12:42:33,049 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array3_false-valid-deref.i [2018-01-24 12:42:33,193 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 12:42:33,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 12:42:33,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 12:42:33,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 12:42:33,208 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 12:42:33,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:42:33" (1/1) ... [2018-01-24 12:42:33,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa3187e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:33, skipping insertion in model container [2018-01-24 12:42:33,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:42:33" (1/1) ... [2018-01-24 12:42:33,231 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:42:33,251 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:42:33,364 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:42:33,376 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:42:33,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:33 WrapperNode [2018-01-24 12:42:33,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 12:42:33,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 12:42:33,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 12:42:33,382 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 12:42:33,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:33" (1/1) ... [2018-01-24 12:42:33,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:33" (1/1) ... [2018-01-24 12:42:33,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:33" (1/1) ... [2018-01-24 12:42:33,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:33" (1/1) ... [2018-01-24 12:42:33,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:33" (1/1) ... [2018-01-24 12:42:33,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:33" (1/1) ... [2018-01-24 12:42:33,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:33" (1/1) ... [2018-01-24 12:42:33,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 12:42:33,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 12:42:33,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 12:42:33,408 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 12:42:33,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:33" (1/1) ... No working directory specified, using /storage/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 [2018-01-24 12:42:33,453 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 12:42:33,453 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 12:42:33,453 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-24 12:42:33,453 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 12:42:33,453 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 12:42:33,454 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 12:42:33,454 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-24 12:42:33,454 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 12:42:33,454 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 12:42:33,454 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 12:42:33,570 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 12:42:33,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:42:33 BoogieIcfgContainer [2018-01-24 12:42:33,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 12:42:33,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 12:42:33,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 12:42:33,574 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 12:42:33,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 12:42:33" (1/3) ... [2018-01-24 12:42:33,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f0bf5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:42:33, skipping insertion in model container [2018-01-24 12:42:33,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:33" (2/3) ... [2018-01-24 12:42:33,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f0bf5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:42:33, skipping insertion in model container [2018-01-24 12:42:33,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:42:33" (3/3) ... [2018-01-24 12:42:33,578 INFO L105 eAbstractionObserver]: Analyzing ICFG array3_false-valid-deref.i [2018-01-24 12:42:33,585 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 12:42:33,591 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-01-24 12:42:33,623 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 12:42:33,623 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 12:42:33,623 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 12:42:33,623 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 12:42:33,624 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 12:42:33,624 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 12:42:33,624 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 12:42:33,624 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 12:42:33,625 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 12:42:33,638 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-01-24 12:42:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 12:42:33,643 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:33,644 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:33,644 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:33,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1213833872, now seen corresponding path program 1 times [2018-01-24 12:42:33,651 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:33,651 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:33,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:33,699 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:33,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:33,741 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:33,888 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:33,888 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 12:42:33,889 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 12:42:33,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 12:42:33,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:42:33,903 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2018-01-24 12:42:34,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:34,035 INFO L93 Difference]: Finished difference Result 69 states and 95 transitions. [2018-01-24 12:42:34,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 12:42:34,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 12:42:34,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:34,044 INFO L225 Difference]: With dead ends: 69 [2018-01-24 12:42:34,045 INFO L226 Difference]: Without dead ends: 35 [2018-01-24 12:42:34,049 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:42:34,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-24 12:42:34,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-01-24 12:42:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-01-24 12:42:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-01-24 12:42:34,137 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 8 [2018-01-24 12:42:34,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:34,137 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-01-24 12:42:34,137 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 12:42:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-01-24 12:42:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 12:42:34,138 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:34,138 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:34,138 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:34,139 INFO L82 PathProgramCache]: Analyzing trace with hash -863334142, now seen corresponding path program 1 times [2018-01-24 12:42:34,139 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:34,139 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:34,140 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:34,140 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:34,140 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:34,153 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:34,232 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:34,232 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 12:42:34,234 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 12:42:34,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 12:42:34,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:42:34,235 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 6 states. [2018-01-24 12:42:34,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:34,370 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-01-24 12:42:34,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:42:34,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-01-24 12:42:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:34,372 INFO L225 Difference]: With dead ends: 35 [2018-01-24 12:42:34,372 INFO L226 Difference]: Without dead ends: 34 [2018-01-24 12:42:34,373 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:42:34,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-01-24 12:42:34,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2018-01-24 12:42:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-01-24 12:42:34,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-01-24 12:42:34,378 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 16 [2018-01-24 12:42:34,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:34,379 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-01-24 12:42:34,379 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 12:42:34,379 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-01-24 12:42:34,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 12:42:34,380 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:34,380 INFO L322 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:34,380 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:34,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1135364244, now seen corresponding path program 1 times [2018-01-24 12:42:34,381 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:34,381 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:34,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:34,382 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:34,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:34,396 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-01-24 12:42:34,437 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:34,437 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:42:34,445 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:34,468 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-01-24 12:42:34,510 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:34,510 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-24 12:42:34,510 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:42:34,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:42:34,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:42:34,511 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 5 states. [2018-01-24 12:42:34,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:34,553 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2018-01-24 12:42:34,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:42:34,553 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-24 12:42:34,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:34,554 INFO L225 Difference]: With dead ends: 58 [2018-01-24 12:42:34,554 INFO L226 Difference]: Without dead ends: 44 [2018-01-24 12:42:34,555 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:42:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-24 12:42:34,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2018-01-24 12:42:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-24 12:42:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-01-24 12:42:34,560 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2018-01-24 12:42:34,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:34,561 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-01-24 12:42:34,561 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:42:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-01-24 12:42:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 12:42:34,561 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:34,562 INFO L322 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:34,562 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:34,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1230203493, now seen corresponding path program 2 times [2018-01-24 12:42:34,562 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:34,562 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:34,563 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:34,563 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:34,563 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:34,577 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-01-24 12:42:34,649 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:34,649 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:34,657 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:42:34,665 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:34,674 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:34,675 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:34,677 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-01-24 12:42:34,710 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:34,710 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-01-24 12:42:34,711 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 12:42:34,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 12:42:34,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:42:34,711 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 6 states. [2018-01-24 12:42:34,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:34,792 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2018-01-24 12:42:34,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:42:34,793 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-01-24 12:42:34,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:34,794 INFO L225 Difference]: With dead ends: 67 [2018-01-24 12:42:34,794 INFO L226 Difference]: Without dead ends: 53 [2018-01-24 12:42:34,795 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:42:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-01-24 12:42:34,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 37. [2018-01-24 12:42:34,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-24 12:42:34,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-01-24 12:42:34,802 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32 [2018-01-24 12:42:34,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:34,802 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-01-24 12:42:34,803 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 12:42:34,803 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-01-24 12:42:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-24 12:42:34,804 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:34,804 INFO L322 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:34,804 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash 417265886, now seen corresponding path program 3 times [2018-01-24 12:42:34,805 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:34,805 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:34,806 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:34,806 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:34,806 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:34,819 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-01-24 12:42:34,906 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:34,906 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:34,911 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:42:34,917 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:34,919 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:34,922 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:34,923 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:34,925 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-24 12:42:34,995 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:34,996 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2018-01-24 12:42:34,996 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 12:42:34,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 12:42:34,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-01-24 12:42:34,997 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 10 states. [2018-01-24 12:42:35,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:35,153 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2018-01-24 12:42:35,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 12:42:35,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2018-01-24 12:42:35,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:35,155 INFO L225 Difference]: With dead ends: 76 [2018-01-24 12:42:35,155 INFO L226 Difference]: Without dead ends: 62 [2018-01-24 12:42:35,156 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-01-24 12:42:35,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-01-24 12:42:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2018-01-24 12:42:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-24 12:42:35,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2018-01-24 12:42:35,164 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 36 [2018-01-24 12:42:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:35,164 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2018-01-24 12:42:35,165 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 12:42:35,165 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2018-01-24 12:42:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-24 12:42:35,166 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:35,166 INFO L322 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:35,166 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:35,167 INFO L82 PathProgramCache]: Analyzing trace with hash 576961419, now seen corresponding path program 4 times [2018-01-24 12:42:35,167 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:35,167 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:35,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:35,168 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:35,168 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:35,182 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:35,270 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-01-24 12:42:35,271 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:35,271 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:35,277 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:42:35,289 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:35,292 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-01-24 12:42:35,322 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:35,322 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-01-24 12:42:35,323 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 12:42:35,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 12:42:35,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-24 12:42:35,323 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 8 states. [2018-01-24 12:42:35,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:35,422 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2018-01-24 12:42:35,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 12:42:35,422 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2018-01-24 12:42:35,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:35,423 INFO L225 Difference]: With dead ends: 90 [2018-01-24 12:42:35,423 INFO L226 Difference]: Without dead ends: 71 [2018-01-24 12:42:35,424 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-01-24 12:42:35,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-24 12:42:35,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 50. [2018-01-24 12:42:35,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-01-24 12:42:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2018-01-24 12:42:35,436 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 45 [2018-01-24 12:42:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:35,436 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2018-01-24 12:42:35,436 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 12:42:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2018-01-24 12:42:35,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-24 12:42:35,438 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:35,438 INFO L322 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:35,438 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:35,438 INFO L82 PathProgramCache]: Analyzing trace with hash -194823758, now seen corresponding path program 5 times [2018-01-24 12:42:35,438 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:35,438 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:35,439 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:35,440 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:35,440 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:35,454 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-01-24 12:42:35,554 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:35,555 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:35,560 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:42:35,566 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:35,581 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:35,586 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:35,593 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:35,598 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:35,601 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:35,607 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:35,612 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:35,615 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-01-24 12:42:35,647 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:35,647 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-24 12:42:35,647 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 12:42:35,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 12:42:35,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-24 12:42:35,648 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 9 states. [2018-01-24 12:42:35,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:35,768 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2018-01-24 12:42:35,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 12:42:35,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2018-01-24 12:42:35,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:35,771 INFO L225 Difference]: With dead ends: 99 [2018-01-24 12:42:35,771 INFO L226 Difference]: Without dead ends: 80 [2018-01-24 12:42:35,772 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-01-24 12:42:35,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-01-24 12:42:35,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 54. [2018-01-24 12:42:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-24 12:42:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2018-01-24 12:42:35,780 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 49 [2018-01-24 12:42:35,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:35,780 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2018-01-24 12:42:35,781 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 12:42:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2018-01-24 12:42:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-01-24 12:42:35,782 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:35,782 INFO L322 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:35,782 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:35,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1600566183, now seen corresponding path program 6 times [2018-01-24 12:42:35,783 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:35,783 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:35,784 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:35,784 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:35,784 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:35,798 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-01-24 12:42:35,932 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:35,932 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:35,939 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:42:35,945 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:35,950 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:35,952 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:35,953 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:35,955 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:35,956 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:35,958 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:35,959 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:35,961 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:35,987 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-01-24 12:42:36,017 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:36,017 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2018-01-24 12:42:36,017 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-24 12:42:36,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-24 12:42:36,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=103, Unknown=0, NotChecked=0, Total=182 [2018-01-24 12:42:36,018 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 14 states. [2018-01-24 12:42:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:36,242 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2018-01-24 12:42:36,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 12:42:36,242 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2018-01-24 12:42:36,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:36,243 INFO L225 Difference]: With dead ends: 108 [2018-01-24 12:42:36,243 INFO L226 Difference]: Without dead ends: 89 [2018-01-24 12:42:36,244 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=103, Unknown=0, NotChecked=0, Total=182 [2018-01-24 12:42:36,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-01-24 12:42:36,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 63. [2018-01-24 12:42:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-24 12:42:36,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2018-01-24 12:42:36,253 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 53 [2018-01-24 12:42:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:36,253 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2018-01-24 12:42:36,254 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-24 12:42:36,254 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2018-01-24 12:42:36,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-01-24 12:42:36,255 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:36,255 INFO L322 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:36,255 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:36,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1495641218, now seen corresponding path program 7 times [2018-01-24 12:42:36,255 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:36,255 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:36,256 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:36,256 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:36,256 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:36,271 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-01-24 12:42:36,369 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:36,370 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:36,377 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:36,394 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:36,410 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-01-24 12:42:36,443 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:36,443 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-01-24 12:42:36,444 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 12:42:36,444 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 12:42:36,444 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-24 12:42:36,444 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 11 states. [2018-01-24 12:42:36,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:36,587 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2018-01-24 12:42:36,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 12:42:36,587 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2018-01-24 12:42:36,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:36,588 INFO L225 Difference]: With dead ends: 122 [2018-01-24 12:42:36,588 INFO L226 Difference]: Without dead ends: 98 [2018-01-24 12:42:36,589 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-01-24 12:42:36,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-01-24 12:42:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 67. [2018-01-24 12:42:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-24 12:42:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2018-01-24 12:42:36,596 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 62 [2018-01-24 12:42:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:36,596 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2018-01-24 12:42:36,596 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 12:42:36,596 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2018-01-24 12:42:36,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-01-24 12:42:36,597 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:36,597 INFO L322 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:36,597 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:36,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1534369477, now seen corresponding path program 8 times [2018-01-24 12:42:36,598 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:36,598 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:36,598 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:36,599 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:36,599 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:36,611 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-01-24 12:42:36,707 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:36,707 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:36,714 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:42:36,719 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:36,726 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:36,727 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:36,731 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-01-24 12:42:36,766 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:36,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-01-24 12:42:36,767 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 12:42:36,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 12:42:36,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-24 12:42:36,767 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 12 states. [2018-01-24 12:42:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:36,865 INFO L93 Difference]: Finished difference Result 131 states and 138 transitions. [2018-01-24 12:42:36,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 12:42:36,866 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2018-01-24 12:42:36,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:36,867 INFO L225 Difference]: With dead ends: 131 [2018-01-24 12:42:36,867 INFO L226 Difference]: Without dead ends: 107 [2018-01-24 12:42:36,868 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-01-24 12:42:36,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-01-24 12:42:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 71. [2018-01-24 12:42:36,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-24 12:42:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2018-01-24 12:42:36,879 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 66 [2018-01-24 12:42:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:36,879 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2018-01-24 12:42:36,879 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 12:42:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2018-01-24 12:42:36,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-01-24 12:42:36,880 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:36,881 INFO L322 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:36,881 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:36,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1473900172, now seen corresponding path program 9 times [2018-01-24 12:42:36,881 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:36,881 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:36,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:36,882 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:36,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:36,894 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-01-24 12:42:37,058 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:37,058 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:37,070 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:42:37,075 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:37,081 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:37,088 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:37,090 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:37,092 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:37,092 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:37,095 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-01-24 12:42:37,175 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:37,175 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6] total 18 [2018-01-24 12:42:37,175 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-24 12:42:37,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-24 12:42:37,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=173, Unknown=0, NotChecked=0, Total=306 [2018-01-24 12:42:37,176 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 18 states. [2018-01-24 12:42:37,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:37,355 INFO L93 Difference]: Finished difference Result 140 states and 148 transitions. [2018-01-24 12:42:37,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-24 12:42:37,356 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2018-01-24 12:42:37,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:37,357 INFO L225 Difference]: With dead ends: 140 [2018-01-24 12:42:37,357 INFO L226 Difference]: Without dead ends: 116 [2018-01-24 12:42:37,357 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=173, Unknown=0, NotChecked=0, Total=306 [2018-01-24 12:42:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-01-24 12:42:37,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 80. [2018-01-24 12:42:37,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-01-24 12:42:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2018-01-24 12:42:37,369 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 70 [2018-01-24 12:42:37,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:37,370 INFO L432 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2018-01-24 12:42:37,370 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-24 12:42:37,370 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2018-01-24 12:42:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-01-24 12:42:37,372 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:37,372 INFO L322 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:37,372 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:37,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1757583627, now seen corresponding path program 10 times [2018-01-24 12:42:37,372 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:37,373 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:37,373 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:37,374 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:37,374 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:37,386 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:37,524 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-01-24 12:42:37,524 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:37,524 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:37,532 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:42:37,552 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:37,556 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-01-24 12:42:37,608 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:37,609 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-01-24 12:42:37,609 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-24 12:42:37,609 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-24 12:42:37,610 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-24 12:42:37,610 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 14 states. [2018-01-24 12:42:37,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:37,811 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2018-01-24 12:42:37,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-24 12:42:37,811 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2018-01-24 12:42:37,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:37,813 INFO L225 Difference]: With dead ends: 154 [2018-01-24 12:42:37,813 INFO L226 Difference]: Without dead ends: 125 [2018-01-24 12:42:37,813 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-01-24 12:42:37,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-24 12:42:37,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 84. [2018-01-24 12:42:37,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-01-24 12:42:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2018-01-24 12:42:37,823 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 79 [2018-01-24 12:42:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:37,823 INFO L432 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2018-01-24 12:42:37,823 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-24 12:42:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2018-01-24 12:42:37,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-24 12:42:37,825 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:37,825 INFO L322 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:37,825 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:37,825 INFO L82 PathProgramCache]: Analyzing trace with hash -2099078308, now seen corresponding path program 11 times [2018-01-24 12:42:37,826 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:37,826 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:37,827 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:37,827 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:37,827 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:37,839 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-01-24 12:42:37,997 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:37,997 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:38,002 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:42:38,007 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,008 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,009 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,010 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,011 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,013 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,015 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,017 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,020 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,022 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,025 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,029 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,034 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:38,035 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:38,038 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:38,057 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-01-24 12:42:38,078 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:38,078 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-01-24 12:42:38,079 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-24 12:42:38,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-24 12:42:38,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-24 12:42:38,079 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 15 states. [2018-01-24 12:42:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:38,180 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2018-01-24 12:42:38,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 12:42:38,180 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 83 [2018-01-24 12:42:38,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:38,181 INFO L225 Difference]: With dead ends: 163 [2018-01-24 12:42:38,181 INFO L226 Difference]: Without dead ends: 134 [2018-01-24 12:42:38,181 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-01-24 12:42:38,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-01-24 12:42:38,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 88. [2018-01-24 12:42:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-01-24 12:42:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2018-01-24 12:42:38,190 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 83 [2018-01-24 12:42:38,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:38,190 INFO L432 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2018-01-24 12:42:38,190 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-24 12:42:38,190 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2018-01-24 12:42:38,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-01-24 12:42:38,191 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:38,191 INFO L322 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:38,191 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:38,191 INFO L82 PathProgramCache]: Analyzing trace with hash -159824829, now seen corresponding path program 12 times [2018-01-24 12:42:38,191 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:38,191 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:38,192 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:38,192 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:38,192 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:38,204 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-01-24 12:42:38,386 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:38,386 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:38,392 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:42:38,396 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:38,397 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:38,398 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:38,399 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:38,401 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:38,402 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:38,404 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:38,405 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:38,407 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:38,409 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:38,411 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:38,412 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:38,414 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2018-01-24 12:42:38,503 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:38,504 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 22 [2018-01-24 12:42:38,504 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-24 12:42:38,504 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-24 12:42:38,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=261, Unknown=0, NotChecked=0, Total=462 [2018-01-24 12:42:38,505 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 22 states. [2018-01-24 12:42:38,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:38,683 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2018-01-24 12:42:38,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-24 12:42:38,683 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 87 [2018-01-24 12:42:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:38,684 INFO L225 Difference]: With dead ends: 172 [2018-01-24 12:42:38,684 INFO L226 Difference]: Without dead ends: 143 [2018-01-24 12:42:38,685 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=201, Invalid=261, Unknown=0, NotChecked=0, Total=462 [2018-01-24 12:42:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-24 12:42:38,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 97. [2018-01-24 12:42:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-01-24 12:42:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-01-24 12:42:38,695 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 87 [2018-01-24 12:42:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:38,695 INFO L432 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-01-24 12:42:38,695 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-24 12:42:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-01-24 12:42:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-01-24 12:42:38,696 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:38,696 INFO L322 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:38,696 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:38,697 INFO L82 PathProgramCache]: Analyzing trace with hash -2110093160, now seen corresponding path program 13 times [2018-01-24 12:42:38,697 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:38,697 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:38,698 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:38,698 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:38,698 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:38,711 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-01-24 12:42:38,839 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:38,839 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:38,844 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:38,860 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-01-24 12:42:38,913 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:38,914 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-01-24 12:42:38,914 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-24 12:42:38,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-24 12:42:38,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-24 12:42:38,914 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 17 states. [2018-01-24 12:42:39,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:39,062 INFO L93 Difference]: Finished difference Result 186 states and 196 transitions. [2018-01-24 12:42:39,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-24 12:42:39,062 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2018-01-24 12:42:39,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:39,063 INFO L225 Difference]: With dead ends: 186 [2018-01-24 12:42:39,063 INFO L226 Difference]: Without dead ends: 152 [2018-01-24 12:42:39,063 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-01-24 12:42:39,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-24 12:42:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 101. [2018-01-24 12:42:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-24 12:42:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2018-01-24 12:42:39,072 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 96 [2018-01-24 12:42:39,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:39,073 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2018-01-24 12:42:39,073 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-24 12:42:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2018-01-24 12:42:39,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-01-24 12:42:39,074 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:39,074 INFO L322 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:39,074 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:39,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1842728721, now seen corresponding path program 14 times [2018-01-24 12:42:39,075 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:39,075 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:39,076 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:39,076 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:39,076 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:39,090 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-01-24 12:42:39,263 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:39,263 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:39,268 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:42:39,273 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:39,282 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:39,284 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:39,286 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-01-24 12:42:39,333 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:39,333 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-01-24 12:42:39,333 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-24 12:42:39,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-24 12:42:39,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-24 12:42:39,334 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 18 states. [2018-01-24 12:42:39,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:39,509 INFO L93 Difference]: Finished difference Result 195 states and 206 transitions. [2018-01-24 12:42:39,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-24 12:42:39,510 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 100 [2018-01-24 12:42:39,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:39,511 INFO L225 Difference]: With dead ends: 195 [2018-01-24 12:42:39,511 INFO L226 Difference]: Without dead ends: 161 [2018-01-24 12:42:39,512 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-01-24 12:42:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-24 12:42:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 105. [2018-01-24 12:42:39,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-01-24 12:42:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-01-24 12:42:39,524 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2018-01-24 12:42:39,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:39,524 INFO L432 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-01-24 12:42:39,524 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-24 12:42:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-01-24 12:42:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-01-24 12:42:39,525 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:39,525 INFO L322 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:39,525 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:39,525 INFO L82 PathProgramCache]: Analyzing trace with hash -184078070, now seen corresponding path program 15 times [2018-01-24 12:42:39,526 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:39,526 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:39,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:39,527 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:39,527 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:39,539 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:39,802 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-01-24 12:42:39,802 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:39,802 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:39,810 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:42:39,817 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:39,818 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:39,820 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:39,822 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:39,824 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:39,826 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:39,828 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:39,829 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:39,832 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-01-24 12:42:39,943 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:39,944 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8] total 26 [2018-01-24 12:42:39,944 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-24 12:42:39,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-24 12:42:39,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=367, Unknown=0, NotChecked=0, Total=650 [2018-01-24 12:42:39,945 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 26 states. [2018-01-24 12:42:40,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:40,174 INFO L93 Difference]: Finished difference Result 204 states and 216 transitions. [2018-01-24 12:42:40,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-24 12:42:40,174 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 104 [2018-01-24 12:42:40,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:40,175 INFO L225 Difference]: With dead ends: 204 [2018-01-24 12:42:40,175 INFO L226 Difference]: Without dead ends: 170 [2018-01-24 12:42:40,176 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=283, Invalid=367, Unknown=0, NotChecked=0, Total=650 [2018-01-24 12:42:40,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-24 12:42:40,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 114. [2018-01-24 12:42:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-01-24 12:42:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2018-01-24 12:42:40,185 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 104 [2018-01-24 12:42:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:40,185 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 115 transitions. [2018-01-24 12:42:40,186 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-24 12:42:40,186 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 115 transitions. [2018-01-24 12:42:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-01-24 12:42:40,186 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:40,186 INFO L322 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:40,186 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:40,186 INFO L82 PathProgramCache]: Analyzing trace with hash 950262623, now seen corresponding path program 16 times [2018-01-24 12:42:40,186 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:40,187 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:40,187 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:40,187 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:40,187 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:40,198 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-01-24 12:42:40,365 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:40,365 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:40,370 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:42:40,386 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:40,388 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-01-24 12:42:40,426 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:40,426 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-01-24 12:42:40,426 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-24 12:42:40,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-24 12:42:40,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-01-24 12:42:40,427 INFO L87 Difference]: Start difference. First operand 114 states and 115 transitions. Second operand 20 states. [2018-01-24 12:42:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:40,564 INFO L93 Difference]: Finished difference Result 218 states and 230 transitions. [2018-01-24 12:42:40,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-24 12:42:40,564 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 113 [2018-01-24 12:42:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:40,565 INFO L225 Difference]: With dead ends: 218 [2018-01-24 12:42:40,565 INFO L226 Difference]: Without dead ends: 179 [2018-01-24 12:42:40,566 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-01-24 12:42:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-24 12:42:40,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 118. [2018-01-24 12:42:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-24 12:42:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2018-01-24 12:42:40,577 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 113 [2018-01-24 12:42:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:40,577 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2018-01-24 12:42:40,577 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-24 12:42:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2018-01-24 12:42:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-01-24 12:42:40,578 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:40,578 INFO L322 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:40,578 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:40,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1664169478, now seen corresponding path program 17 times [2018-01-24 12:42:40,578 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:40,578 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:40,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:40,579 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:40,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:40,592 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-01-24 12:42:40,764 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:40,764 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:40,769 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:42:40,775 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,776 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,777 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,778 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,779 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,780 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,781 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,783 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,784 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,786 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,788 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,790 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,793 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,796 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,799 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,803 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,807 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,812 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,823 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:40,824 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:40,826 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-01-24 12:42:40,865 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:40,865 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-01-24 12:42:40,865 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-24 12:42:40,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-24 12:42:40,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-01-24 12:42:40,866 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 21 states. [2018-01-24 12:42:41,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:41,011 INFO L93 Difference]: Finished difference Result 227 states and 240 transitions. [2018-01-24 12:42:41,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-24 12:42:41,012 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 117 [2018-01-24 12:42:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:41,013 INFO L225 Difference]: With dead ends: 227 [2018-01-24 12:42:41,013 INFO L226 Difference]: Without dead ends: 188 [2018-01-24 12:42:41,013 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-01-24 12:42:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-01-24 12:42:41,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 122. [2018-01-24 12:42:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-01-24 12:42:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2018-01-24 12:42:41,023 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 117 [2018-01-24 12:42:41,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:41,024 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2018-01-24 12:42:41,024 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-24 12:42:41,024 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2018-01-24 12:42:41,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-01-24 12:42:41,024 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:41,024 INFO L322 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:41,024 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:41,024 INFO L82 PathProgramCache]: Analyzing trace with hash 2092098861, now seen corresponding path program 18 times [2018-01-24 12:42:41,025 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:41,025 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:41,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:41,025 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:41,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:41,035 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:41,248 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-01-24 12:42:41,248 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:41,248 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:41,255 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:42:41,261 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,262 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,263 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,264 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,265 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,266 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,268 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,269 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,270 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,272 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,274 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,276 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,278 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,280 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,283 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:41,284 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:41,286 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2018-01-24 12:42:41,344 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:41,344 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 9] total 30 [2018-01-24 12:42:41,344 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-24 12:42:41,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-24 12:42:41,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=491, Unknown=0, NotChecked=0, Total=870 [2018-01-24 12:42:41,345 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 30 states. [2018-01-24 12:42:41,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:41,635 INFO L93 Difference]: Finished difference Result 236 states and 250 transitions. [2018-01-24 12:42:41,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-24 12:42:41,635 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 121 [2018-01-24 12:42:41,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:41,636 INFO L225 Difference]: With dead ends: 236 [2018-01-24 12:42:41,636 INFO L226 Difference]: Without dead ends: 197 [2018-01-24 12:42:41,637 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=379, Invalid=491, Unknown=0, NotChecked=0, Total=870 [2018-01-24 12:42:41,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-24 12:42:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 131. [2018-01-24 12:42:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-24 12:42:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2018-01-24 12:42:41,656 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 121 [2018-01-24 12:42:41,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:41,656 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2018-01-24 12:42:41,656 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-24 12:42:41,656 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2018-01-24 12:42:41,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-01-24 12:42:41,657 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:41,658 INFO L322 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:41,658 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:41,658 INFO L82 PathProgramCache]: Analyzing trace with hash 734718894, now seen corresponding path program 19 times [2018-01-24 12:42:41,658 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:41,658 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:41,659 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:41,659 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:41,660 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:41,678 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-01-24 12:42:41,951 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:41,951 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:41,958 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:41,981 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-01-24 12:42:42,025 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:42,025 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-01-24 12:42:42,026 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-24 12:42:42,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-24 12:42:42,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-01-24 12:42:42,026 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 23 states. [2018-01-24 12:42:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:42,305 INFO L93 Difference]: Finished difference Result 250 states and 264 transitions. [2018-01-24 12:42:42,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-24 12:42:42,305 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 130 [2018-01-24 12:42:42,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:42,306 INFO L225 Difference]: With dead ends: 250 [2018-01-24 12:42:42,307 INFO L226 Difference]: Without dead ends: 206 [2018-01-24 12:42:42,307 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-01-24 12:42:42,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-01-24 12:42:42,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 135. [2018-01-24 12:42:42,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-01-24 12:42:42,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2018-01-24 12:42:42,326 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 130 [2018-01-24 12:42:42,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:42,326 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2018-01-24 12:42:42,327 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-24 12:42:42,327 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2018-01-24 12:42:42,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-24 12:42:42,328 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:42,328 INFO L322 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:42,328 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:42,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1367823335, now seen corresponding path program 20 times [2018-01-24 12:42:42,328 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:42,328 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:42,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:42,329 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:42,329 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:42,343 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-01-24 12:42:42,619 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:42,619 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:42,624 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:42:42,631 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:42,644 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:42,646 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:42,650 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-01-24 12:42:42,697 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:42,697 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-01-24 12:42:42,698 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-24 12:42:42,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-24 12:42:42,698 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-01-24 12:42:42,698 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand 24 states. [2018-01-24 12:42:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:42,892 INFO L93 Difference]: Finished difference Result 259 states and 274 transitions. [2018-01-24 12:42:42,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-24 12:42:42,893 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 134 [2018-01-24 12:42:42,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:42,894 INFO L225 Difference]: With dead ends: 259 [2018-01-24 12:42:42,894 INFO L226 Difference]: Without dead ends: 215 [2018-01-24 12:42:42,894 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-01-24 12:42:42,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-01-24 12:42:42,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 139. [2018-01-24 12:42:42,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-24 12:42:42,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2018-01-24 12:42:42,907 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 134 [2018-01-24 12:42:42,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:42,907 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2018-01-24 12:42:42,907 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-24 12:42:42,907 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2018-01-24 12:42:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-01-24 12:42:42,907 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:42,908 INFO L322 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:42,908 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:42,908 INFO L82 PathProgramCache]: Analyzing trace with hash -168626272, now seen corresponding path program 21 times [2018-01-24 12:42:42,908 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:42,908 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:42,909 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:42,909 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:42,909 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:42,920 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-01-24 12:42:43,211 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:43,211 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:43,218 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:42:43,226 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:43,228 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:43,229 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:43,231 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:43,233 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:43,235 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:43,238 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:43,242 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:43,245 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:43,246 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:43,248 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2018-01-24 12:42:43,425 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:43,425 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 10] total 34 [2018-01-24 12:42:43,425 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-24 12:42:43,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-24 12:42:43,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=633, Unknown=0, NotChecked=0, Total=1122 [2018-01-24 12:42:43,426 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand 34 states. [2018-01-24 12:42:44,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:44,073 INFO L93 Difference]: Finished difference Result 268 states and 284 transitions. [2018-01-24 12:42:44,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-24 12:42:44,073 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 138 [2018-01-24 12:42:44,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:44,074 INFO L225 Difference]: With dead ends: 268 [2018-01-24 12:42:44,074 INFO L226 Difference]: Without dead ends: 224 [2018-01-24 12:42:44,075 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=489, Invalid=633, Unknown=0, NotChecked=0, Total=1122 [2018-01-24 12:42:44,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2018-01-24 12:42:44,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 148. [2018-01-24 12:42:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-01-24 12:42:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2018-01-24 12:42:44,091 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 138 [2018-01-24 12:42:44,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:44,091 INFO L432 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2018-01-24 12:42:44,091 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-24 12:42:44,091 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2018-01-24 12:42:44,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-01-24 12:42:44,092 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:44,092 INFO L322 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:44,092 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:44,092 INFO L82 PathProgramCache]: Analyzing trace with hash -219252535, now seen corresponding path program 22 times [2018-01-24 12:42:44,092 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:44,092 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:44,093 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:44,093 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:44,093 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:44,103 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-24 12:42:44,462 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:44,462 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:44,468 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:42:44,492 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:44,496 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-24 12:42:44,544 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:44,545 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-01-24 12:42:44,545 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-24 12:42:44,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-24 12:42:44,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-01-24 12:42:44,545 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 26 states. [2018-01-24 12:42:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:44,927 INFO L93 Difference]: Finished difference Result 282 states and 298 transitions. [2018-01-24 12:42:44,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-24 12:42:44,927 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 147 [2018-01-24 12:42:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:44,929 INFO L225 Difference]: With dead ends: 282 [2018-01-24 12:42:44,929 INFO L226 Difference]: Without dead ends: 233 [2018-01-24 12:42:44,930 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-01-24 12:42:44,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-01-24 12:42:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 152. [2018-01-24 12:42:44,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-24 12:42:44,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2018-01-24 12:42:44,956 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 147 [2018-01-24 12:42:44,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:44,956 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2018-01-24 12:42:44,956 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-24 12:42:44,956 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2018-01-24 12:42:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-01-24 12:42:44,957 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:44,957 INFO L322 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:44,957 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:44,958 INFO L82 PathProgramCache]: Analyzing trace with hash -2062915152, now seen corresponding path program 23 times [2018-01-24 12:42:44,958 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:44,958 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:44,959 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:44,959 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:44,959 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:44,974 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-24 12:42:45,483 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:45,484 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:45,491 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:42:45,501 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,503 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,504 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,506 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,507 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,509 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,511 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,514 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,517 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,519 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,523 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,526 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,530 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,535 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,540 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,546 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,553 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,561 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,570 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,579 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,590 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,602 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,614 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,629 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,661 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:45,662 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:45,667 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:45,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-24 12:42:45,730 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:45,730 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-01-24 12:42:45,731 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-01-24 12:42:45,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-01-24 12:42:45,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-01-24 12:42:45,731 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand 27 states. [2018-01-24 12:42:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:46,083 INFO L93 Difference]: Finished difference Result 291 states and 308 transitions. [2018-01-24 12:42:46,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-24 12:42:46,083 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 151 [2018-01-24 12:42:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:46,084 INFO L225 Difference]: With dead ends: 291 [2018-01-24 12:42:46,084 INFO L226 Difference]: Without dead ends: 242 [2018-01-24 12:42:46,085 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-01-24 12:42:46,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-24 12:42:46,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 156. [2018-01-24 12:42:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-24 12:42:46,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2018-01-24 12:42:46,100 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 151 [2018-01-24 12:42:46,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:46,101 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2018-01-24 12:42:46,101 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-01-24 12:42:46,101 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2018-01-24 12:42:46,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-01-24 12:42:46,101 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:46,102 INFO L322 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:46,102 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:46,102 INFO L82 PathProgramCache]: Analyzing trace with hash -731541737, now seen corresponding path program 24 times [2018-01-24 12:42:46,102 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:46,102 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:46,102 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:46,103 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:46,103 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:46,113 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-01-24 12:42:46,644 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:46,644 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:46,652 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:42:46,660 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,661 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,662 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,663 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,665 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,666 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,668 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,670 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,672 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,674 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,676 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,677 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,680 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,682 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,685 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,687 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,690 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,693 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,696 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:46,697 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:46,700 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2018-01-24 12:42:46,774 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:46,775 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 11] total 38 [2018-01-24 12:42:46,775 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-24 12:42:46,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-24 12:42:46,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=613, Invalid=793, Unknown=0, NotChecked=0, Total=1406 [2018-01-24 12:42:46,776 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand 38 states. [2018-01-24 12:42:47,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:47,399 INFO L93 Difference]: Finished difference Result 300 states and 318 transitions. [2018-01-24 12:42:47,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-24 12:42:47,399 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 155 [2018-01-24 12:42:47,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:47,401 INFO L225 Difference]: With dead ends: 300 [2018-01-24 12:42:47,401 INFO L226 Difference]: Without dead ends: 251 [2018-01-24 12:42:47,402 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=613, Invalid=793, Unknown=0, NotChecked=0, Total=1406 [2018-01-24 12:42:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-01-24 12:42:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 165. [2018-01-24 12:42:47,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-24 12:42:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-01-24 12:42:47,434 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 155 [2018-01-24 12:42:47,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:47,434 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-01-24 12:42:47,434 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-24 12:42:47,434 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-01-24 12:42:47,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-01-24 12:42:47,435 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:47,435 INFO L322 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:47,436 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:47,436 INFO L82 PathProgramCache]: Analyzing trace with hash 7304644, now seen corresponding path program 25 times [2018-01-24 12:42:47,436 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:47,436 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:47,437 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:47,437 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:47,437 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:47,451 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:48,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-01-24 12:42:48,316 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:48,316 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:48,324 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:48,354 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-01-24 12:42:48,401 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:48,401 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-01-24 12:42:48,401 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-24 12:42:48,402 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-24 12:42:48,402 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-01-24 12:42:48,402 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 29 states. [2018-01-24 12:42:48,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:48,797 INFO L93 Difference]: Finished difference Result 314 states and 332 transitions. [2018-01-24 12:42:48,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-01-24 12:42:48,797 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 164 [2018-01-24 12:42:48,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:48,799 INFO L225 Difference]: With dead ends: 314 [2018-01-24 12:42:48,799 INFO L226 Difference]: Without dead ends: 260 [2018-01-24 12:42:48,800 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-01-24 12:42:48,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2018-01-24 12:42:48,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 169. [2018-01-24 12:42:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-01-24 12:42:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2018-01-24 12:42:48,835 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 164 [2018-01-24 12:42:48,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:48,836 INFO L432 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2018-01-24 12:42:48,836 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-24 12:42:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2018-01-24 12:42:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-01-24 12:42:48,837 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:48,837 INFO L322 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:48,837 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:48,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1420521539, now seen corresponding path program 26 times [2018-01-24 12:42:48,837 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:48,838 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:48,838 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:48,838 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:48,838 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:48,853 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-01-24 12:42:49,867 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:49,867 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:49,872 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:42:49,883 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:49,903 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:49,905 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:49,908 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-01-24 12:42:49,968 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:49,968 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-01-24 12:42:49,969 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-24 12:42:49,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-24 12:42:49,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-01-24 12:42:49,969 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand 30 states. [2018-01-24 12:42:50,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:50,243 INFO L93 Difference]: Finished difference Result 323 states and 342 transitions. [2018-01-24 12:42:50,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-24 12:42:50,243 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 168 [2018-01-24 12:42:50,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:50,244 INFO L225 Difference]: With dead ends: 323 [2018-01-24 12:42:50,244 INFO L226 Difference]: Without dead ends: 269 [2018-01-24 12:42:50,245 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-01-24 12:42:50,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-01-24 12:42:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 173. [2018-01-24 12:42:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-24 12:42:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2018-01-24 12:42:50,267 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 168 [2018-01-24 12:42:50,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:50,267 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2018-01-24 12:42:50,267 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-24 12:42:50,267 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2018-01-24 12:42:50,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-01-24 12:42:50,268 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:50,268 INFO L322 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:50,268 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:50,268 INFO L82 PathProgramCache]: Analyzing trace with hash -910555850, now seen corresponding path program 27 times [2018-01-24 12:42:50,268 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:50,268 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:50,269 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:50,269 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:50,269 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:50,285 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-01-24 12:42:50,858 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:50,858 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:50,863 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:42:50,872 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:50,873 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:50,875 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:50,876 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:50,878 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:50,880 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:50,882 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:50,885 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:50,888 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:50,892 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:50,897 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:50,898 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:50,901 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1813 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2018-01-24 12:42:51,013 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:51,014 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 12] total 42 [2018-01-24 12:42:51,014 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-24 12:42:51,014 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-24 12:42:51,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=971, Unknown=0, NotChecked=0, Total=1722 [2018-01-24 12:42:51,015 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand 42 states. [2018-01-24 12:42:51,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:51,546 INFO L93 Difference]: Finished difference Result 332 states and 352 transitions. [2018-01-24 12:42:51,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-24 12:42:51,546 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 172 [2018-01-24 12:42:51,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:51,548 INFO L225 Difference]: With dead ends: 332 [2018-01-24 12:42:51,548 INFO L226 Difference]: Without dead ends: 278 [2018-01-24 12:42:51,549 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=751, Invalid=971, Unknown=0, NotChecked=0, Total=1722 [2018-01-24 12:42:51,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-01-24 12:42:51,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 182. [2018-01-24 12:42:51,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-24 12:42:51,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 183 transitions. [2018-01-24 12:42:51,577 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 183 transitions. Word has length 172 [2018-01-24 12:42:51,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:51,577 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 183 transitions. [2018-01-24 12:42:51,577 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-24 12:42:51,577 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 183 transitions. [2018-01-24 12:42:51,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-01-24 12:42:51,578 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:51,578 INFO L322 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:51,578 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:51,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1830068019, now seen corresponding path program 28 times [2018-01-24 12:42:51,578 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:51,578 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:51,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:51,579 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:51,579 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:51,593 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1979 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-01-24 12:42:52,034 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:52,035 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:52,040 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:42:52,066 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:52,069 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1979 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-01-24 12:42:52,120 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:52,120 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-01-24 12:42:52,121 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-24 12:42:52,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-24 12:42:52,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-24 12:42:52,121 INFO L87 Difference]: Start difference. First operand 182 states and 183 transitions. Second operand 32 states. [2018-01-24 12:42:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:52,456 INFO L93 Difference]: Finished difference Result 346 states and 366 transitions. [2018-01-24 12:42:52,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-24 12:42:52,457 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 181 [2018-01-24 12:42:52,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:52,458 INFO L225 Difference]: With dead ends: 346 [2018-01-24 12:42:52,458 INFO L226 Difference]: Without dead ends: 287 [2018-01-24 12:42:52,458 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-01-24 12:42:52,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-01-24 12:42:52,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 186. [2018-01-24 12:42:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-01-24 12:42:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 187 transitions. [2018-01-24 12:42:52,495 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 187 transitions. Word has length 181 [2018-01-24 12:42:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:52,496 INFO L432 AbstractCegarLoop]: Abstraction has 186 states and 187 transitions. [2018-01-24 12:42:52,496 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-24 12:42:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 187 transitions. [2018-01-24 12:42:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-01-24 12:42:52,497 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:52,497 INFO L322 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:52,497 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:52,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1177971110, now seen corresponding path program 29 times [2018-01-24 12:42:52,498 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:52,498 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:52,498 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:52,499 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:52,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:52,510 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2097 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-01-24 12:42:53,051 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:53,052 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:53,056 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:42:53,063 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,064 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,065 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,066 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,067 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,068 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,069 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,071 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,072 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,074 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,076 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,078 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,081 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,083 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,087 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,090 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,094 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,098 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,102 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,108 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,114 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,121 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,128 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,136 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,145 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,155 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,167 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,179 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,193 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,208 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,235 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:53,236 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:53,239 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2097 backedges. 0 proven. 1800 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-01-24 12:42:53,292 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:53,293 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-01-24 12:42:53,293 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-24 12:42:53,293 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-24 12:42:53,294 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-01-24 12:42:53,294 INFO L87 Difference]: Start difference. First operand 186 states and 187 transitions. Second operand 33 states. [2018-01-24 12:42:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:53,617 INFO L93 Difference]: Finished difference Result 355 states and 376 transitions. [2018-01-24 12:42:53,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-24 12:42:53,618 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 185 [2018-01-24 12:42:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:53,619 INFO L225 Difference]: With dead ends: 355 [2018-01-24 12:42:53,619 INFO L226 Difference]: Without dead ends: 296 [2018-01-24 12:42:53,619 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-01-24 12:42:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2018-01-24 12:42:53,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 190. [2018-01-24 12:42:53,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-24 12:42:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 191 transitions. [2018-01-24 12:42:53,647 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 191 transitions. Word has length 185 [2018-01-24 12:42:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:53,647 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 191 transitions. [2018-01-24 12:42:53,647 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-24 12:42:53,647 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 191 transitions. [2018-01-24 12:42:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-01-24 12:42:53,648 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:53,648 INFO L322 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:53,648 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:53,648 INFO L82 PathProgramCache]: Analyzing trace with hash 659595777, now seen corresponding path program 30 times [2018-01-24 12:42:53,649 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:53,649 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:53,649 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:53,649 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:53,649 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:53,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-01-24 12:42:54,244 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:54,244 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:54,252 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:42:54,262 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,264 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,265 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,270 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,271 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,273 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,275 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,277 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,278 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,281 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,284 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,287 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,291 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,294 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,297 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,301 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,304 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,308 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,312 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,316 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,321 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,327 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,332 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:42:54,335 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:54,338 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2018-01-24 12:42:54,452 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:54,452 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 13] total 46 [2018-01-24 12:42:54,452 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-24 12:42:54,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-24 12:42:54,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=1167, Unknown=0, NotChecked=0, Total=2070 [2018-01-24 12:42:54,453 INFO L87 Difference]: Start difference. First operand 190 states and 191 transitions. Second operand 46 states. [2018-01-24 12:42:55,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:55,041 INFO L93 Difference]: Finished difference Result 364 states and 386 transitions. [2018-01-24 12:42:55,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-24 12:42:55,042 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 189 [2018-01-24 12:42:55,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:55,043 INFO L225 Difference]: With dead ends: 364 [2018-01-24 12:42:55,043 INFO L226 Difference]: Without dead ends: 305 [2018-01-24 12:42:55,044 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=903, Invalid=1167, Unknown=0, NotChecked=0, Total=2070 [2018-01-24 12:42:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-01-24 12:42:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 199. [2018-01-24 12:42:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-24 12:42:55,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2018-01-24 12:42:55,080 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 189 [2018-01-24 12:42:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:55,081 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2018-01-24 12:42:55,081 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-24 12:42:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2018-01-24 12:42:55,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-01-24 12:42:55,081 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:55,082 INFO L322 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:55,082 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:55,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1088370982, now seen corresponding path program 31 times [2018-01-24 12:42:55,082 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:55,082 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:55,083 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:55,083 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:55,083 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:55,095 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:55,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-01-24 12:42:55,625 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:55,625 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:55,629 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:55,660 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2402 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-01-24 12:42:55,721 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:55,722 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-01-24 12:42:55,722 INFO L409 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-01-24 12:42:55,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-01-24 12:42:55,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-01-24 12:42:55,723 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand 35 states. [2018-01-24 12:42:56,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:56,090 INFO L93 Difference]: Finished difference Result 378 states and 400 transitions. [2018-01-24 12:42:56,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-01-24 12:42:56,090 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 198 [2018-01-24 12:42:56,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:56,091 INFO L225 Difference]: With dead ends: 378 [2018-01-24 12:42:56,091 INFO L226 Difference]: Without dead ends: 314 [2018-01-24 12:42:56,092 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-01-24 12:42:56,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-01-24 12:42:56,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 203. [2018-01-24 12:42:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-01-24 12:42:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 204 transitions. [2018-01-24 12:42:56,125 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 204 transitions. Word has length 198 [2018-01-24 12:42:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:56,125 INFO L432 AbstractCegarLoop]: Abstraction has 203 states and 204 transitions. [2018-01-24 12:42:56,125 INFO L433 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-01-24 12:42:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 204 transitions. [2018-01-24 12:42:56,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-01-24 12:42:56,126 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:56,126 INFO L322 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:56,126 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:56,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1538121069, now seen corresponding path program 32 times [2018-01-24 12:42:56,126 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:56,127 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:56,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:56,127 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:56,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:56,140 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2532 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-01-24 12:42:56,609 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:56,640 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:56,645 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:42:56,653 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:56,668 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:42:56,671 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:56,674 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2532 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-01-24 12:42:56,753 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:56,754 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-01-24 12:42:56,754 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-24 12:42:56,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-24 12:42:56,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-01-24 12:42:56,755 INFO L87 Difference]: Start difference. First operand 203 states and 204 transitions. Second operand 36 states. [2018-01-24 12:42:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:57,273 INFO L93 Difference]: Finished difference Result 387 states and 410 transitions. [2018-01-24 12:42:57,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-24 12:42:57,274 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 202 [2018-01-24 12:42:57,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:57,275 INFO L225 Difference]: With dead ends: 387 [2018-01-24 12:42:57,275 INFO L226 Difference]: Without dead ends: 323 [2018-01-24 12:42:57,275 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-01-24 12:42:57,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-01-24 12:42:57,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 207. [2018-01-24 12:42:57,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-01-24 12:42:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2018-01-24 12:42:57,309 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 202 [2018-01-24 12:42:57,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:57,309 INFO L432 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2018-01-24 12:42:57,309 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-24 12:42:57,309 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2018-01-24 12:42:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-01-24 12:42:57,310 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:57,310 INFO L322 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:57,310 INFO L371 AbstractCegarLoop]: === Iteration 35 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:57,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1785923124, now seen corresponding path program 33 times [2018-01-24 12:42:57,311 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:57,311 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:57,311 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:57,311 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:57,311 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:57,321 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2666 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-01-24 12:42:57,903 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:57,903 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-24 12:42:57,908 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:42:57,916 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,917 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,919 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,920 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,922 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,923 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,925 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,928 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,931 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,936 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,941 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,948 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,952 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:42:57,953 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:57,956 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2666 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2018-01-24 12:42:58,059 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:58,059 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 14] total 50 [2018-01-24 12:42:58,059 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-24 12:42:58,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-24 12:42:58,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1069, Invalid=1381, Unknown=0, NotChecked=0, Total=2450 [2018-01-24 12:42:58,060 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand 50 states. [2018-01-24 12:42:58,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:58,832 INFO L93 Difference]: Finished difference Result 396 states and 420 transitions. [2018-01-24 12:42:58,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-01-24 12:42:58,832 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 206 [2018-01-24 12:42:58,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:58,833 INFO L225 Difference]: With dead ends: 396 [2018-01-24 12:42:58,833 INFO L226 Difference]: Without dead ends: 332 [2018-01-24 12:42:58,834 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1069, Invalid=1381, Unknown=0, NotChecked=0, Total=2450 [2018-01-24 12:42:58,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-01-24 12:42:58,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 216. [2018-01-24 12:42:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-01-24 12:42:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2018-01-24 12:42:58,875 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 206 [2018-01-24 12:42:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:58,875 INFO L432 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2018-01-24 12:42:58,875 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-24 12:42:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2018-01-24 12:42:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-01-24 12:42:58,876 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:58,876 INFO L322 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:58,876 INFO L371 AbstractCegarLoop]: === Iteration 36 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:42:58,876 INFO L82 PathProgramCache]: Analyzing trace with hash 716025501, now seen corresponding path program 34 times [2018-01-24 12:42:58,876 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:58,876 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:58,877 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:58,877 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:42:58,877 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:58,889 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2866 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-01-24 12:42:59,453 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:59,453 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:42:59,458 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:42:59,489 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:42:59,492 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2866 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-01-24 12:42:59,562 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:59,562 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-01-24 12:42:59,562 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-24 12:42:59,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-24 12:42:59,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-01-24 12:42:59,563 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand 38 states. [2018-01-24 12:43:00,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:43:00,031 INFO L93 Difference]: Finished difference Result 410 states and 434 transitions. [2018-01-24 12:43:00,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-01-24 12:43:00,031 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 215 [2018-01-24 12:43:00,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:43:00,033 INFO L225 Difference]: With dead ends: 410 [2018-01-24 12:43:00,033 INFO L226 Difference]: Without dead ends: 341 [2018-01-24 12:43:00,033 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-01-24 12:43:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-01-24 12:43:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 220. [2018-01-24 12:43:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-01-24 12:43:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 221 transitions. [2018-01-24 12:43:00,075 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 221 transitions. Word has length 215 [2018-01-24 12:43:00,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:43:00,076 INFO L432 AbstractCegarLoop]: Abstraction has 220 states and 221 transitions. [2018-01-24 12:43:00,076 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-24 12:43:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 221 transitions. [2018-01-24 12:43:00,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-01-24 12:43:00,076 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:43:00,077 INFO L322 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:43:00,077 INFO L371 AbstractCegarLoop]: === Iteration 37 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:43:00,077 INFO L82 PathProgramCache]: Analyzing trace with hash 376052740, now seen corresponding path program 35 times [2018-01-24 12:43:00,077 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:43:00,077 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:43:00,077 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:00,078 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:43:00,078 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:00,088 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:43:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-01-24 12:43:00,633 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:43:00,633 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:43:00,638 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:43:00,646 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,647 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,647 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,648 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,649 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,650 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,651 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,653 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,654 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,656 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,658 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,660 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,662 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,665 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,668 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,671 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,675 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,679 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,684 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,689 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,695 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,702 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,709 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,717 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,726 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,737 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,748 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,761 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,774 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,789 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,806 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,823 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,842 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,863 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,887 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,913 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,949 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:00,951 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:43:00,954 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:43:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3008 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-01-24 12:43:01,006 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:43:01,007 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-01-24 12:43:01,007 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-24 12:43:01,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-24 12:43:01,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-01-24 12:43:01,008 INFO L87 Difference]: Start difference. First operand 220 states and 221 transitions. Second operand 39 states. [2018-01-24 12:43:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:43:01,487 INFO L93 Difference]: Finished difference Result 419 states and 444 transitions. [2018-01-24 12:43:01,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-24 12:43:01,487 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 219 [2018-01-24 12:43:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:43:01,489 INFO L225 Difference]: With dead ends: 419 [2018-01-24 12:43:01,489 INFO L226 Difference]: Without dead ends: 350 [2018-01-24 12:43:01,489 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-01-24 12:43:01,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2018-01-24 12:43:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 224. [2018-01-24 12:43:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-01-24 12:43:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2018-01-24 12:43:01,564 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 219 [2018-01-24 12:43:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:43:01,564 INFO L432 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2018-01-24 12:43:01,564 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-24 12:43:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2018-01-24 12:43:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-01-24 12:43:01,566 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:43:01,566 INFO L322 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:43:01,566 INFO L371 AbstractCegarLoop]: === Iteration 38 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:43:01,566 INFO L82 PathProgramCache]: Analyzing trace with hash -908886549, now seen corresponding path program 36 times [2018-01-24 12:43:01,566 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:43:01,567 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:43:01,567 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:01,567 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:43:01,568 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:01,583 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:43:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3154 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-01-24 12:43:02,123 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:43:02,166 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:43:02,170 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:43:02,179 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,180 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,181 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,182 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,183 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,184 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,185 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,187 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,188 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,190 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,192 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,194 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,197 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,199 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,201 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,204 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,208 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,211 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,214 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,219 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,223 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,227 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,233 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,239 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,245 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,251 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,257 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:02,259 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:43:02,262 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:43:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3154 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2018-01-24 12:43:02,439 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:43:02,439 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 15] total 54 [2018-01-24 12:43:02,439 INFO L409 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-01-24 12:43:02,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-01-24 12:43:02,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1249, Invalid=1613, Unknown=0, NotChecked=0, Total=2862 [2018-01-24 12:43:02,440 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand 54 states. [2018-01-24 12:43:03,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:43:03,260 INFO L93 Difference]: Finished difference Result 428 states and 454 transitions. [2018-01-24 12:43:03,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-24 12:43:03,261 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 223 [2018-01-24 12:43:03,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:43:03,262 INFO L225 Difference]: With dead ends: 428 [2018-01-24 12:43:03,262 INFO L226 Difference]: Without dead ends: 359 [2018-01-24 12:43:03,263 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1249, Invalid=1613, Unknown=0, NotChecked=0, Total=2862 [2018-01-24 12:43:03,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-24 12:43:03,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 233. [2018-01-24 12:43:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-01-24 12:43:03,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-01-24 12:43:03,316 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 223 [2018-01-24 12:43:03,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:43:03,316 INFO L432 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-01-24 12:43:03,316 INFO L433 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-01-24 12:43:03,316 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-01-24 12:43:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-01-24 12:43:03,317 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:43:03,317 INFO L322 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:43:03,317 INFO L371 AbstractCegarLoop]: === Iteration 39 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:43:03,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1724416272, now seen corresponding path program 37 times [2018-01-24 12:43:03,318 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:43:03,318 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:43:03,318 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:03,318 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:43:03,318 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:03,329 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:43:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-01-24 12:43:03,905 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:43:03,905 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:43:03,910 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:43:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:03,941 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:43:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-01-24 12:43:04,011 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:43:04,011 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-01-24 12:43:04,011 INFO L409 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-01-24 12:43:04,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-01-24 12:43:04,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-01-24 12:43:04,012 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 41 states. [2018-01-24 12:43:04,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:43:04,638 INFO L93 Difference]: Finished difference Result 442 states and 468 transitions. [2018-01-24 12:43:04,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-24 12:43:04,638 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 232 [2018-01-24 12:43:04,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:43:04,639 INFO L225 Difference]: With dead ends: 442 [2018-01-24 12:43:04,639 INFO L226 Difference]: Without dead ends: 368 [2018-01-24 12:43:04,640 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-01-24 12:43:04,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-01-24 12:43:04,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 237. [2018-01-24 12:43:04,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-01-24 12:43:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2018-01-24 12:43:04,693 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 232 [2018-01-24 12:43:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:43:04,693 INFO L432 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2018-01-24 12:43:04,693 INFO L433 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-01-24 12:43:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2018-01-24 12:43:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-01-24 12:43:04,694 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:43:04,694 INFO L322 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:43:04,694 INFO L371 AbstractCegarLoop]: === Iteration 40 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:43:04,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1358212201, now seen corresponding path program 38 times [2018-01-24 12:43:04,694 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:43:04,694 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:43:04,695 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:04,695 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:43:04,695 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:04,707 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:43:05,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3525 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-01-24 12:43:05,315 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:43:05,315 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:43:05,325 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:43:05,335 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:05,358 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:05,361 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:43:05,365 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:43:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3525 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-01-24 12:43:05,455 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:43:05,455 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-01-24 12:43:05,455 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-24 12:43:05,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-24 12:43:05,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-01-24 12:43:05,456 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand 42 states. [2018-01-24 12:43:06,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:43:06,130 INFO L93 Difference]: Finished difference Result 451 states and 478 transitions. [2018-01-24 12:43:06,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-01-24 12:43:06,130 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 236 [2018-01-24 12:43:06,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:43:06,131 INFO L225 Difference]: With dead ends: 451 [2018-01-24 12:43:06,131 INFO L226 Difference]: Without dead ends: 377 [2018-01-24 12:43:06,132 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-01-24 12:43:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-01-24 12:43:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 241. [2018-01-24 12:43:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-01-24 12:43:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-01-24 12:43:06,191 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 236 [2018-01-24 12:43:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:43:06,191 INFO L432 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-01-24 12:43:06,191 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-24 12:43:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-01-24 12:43:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-01-24 12:43:06,192 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:43:06,192 INFO L322 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:43:06,192 INFO L371 AbstractCegarLoop]: === Iteration 41 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:43:06,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1660712290, now seen corresponding path program 39 times [2018-01-24 12:43:06,193 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:43:06,193 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:43:06,193 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:06,194 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:43:06,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:06,206 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:43:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3683 backedges. 0 proven. 3200 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-01-24 12:43:06,834 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:43:06,834 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:43:06,839 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-24 12:43:06,849 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,851 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,852 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,854 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,856 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,858 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,861 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,865 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,868 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,872 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,877 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,883 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,888 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,896 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,903 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-24 12:43:06,906 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:43:06,909 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:43:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3683 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2018-01-24 12:43:07,053 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:43:07,053 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 16] total 58 [2018-01-24 12:43:07,053 INFO L409 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-01-24 12:43:07,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-01-24 12:43:07,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=1863, Unknown=0, NotChecked=0, Total=3306 [2018-01-24 12:43:07,054 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 58 states. [2018-01-24 12:43:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:43:08,226 INFO L93 Difference]: Finished difference Result 460 states and 488 transitions. [2018-01-24 12:43:08,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-01-24 12:43:08,226 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 240 [2018-01-24 12:43:08,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:43:08,228 INFO L225 Difference]: With dead ends: 460 [2018-01-24 12:43:08,228 INFO L226 Difference]: Without dead ends: 386 [2018-01-24 12:43:08,228 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1443, Invalid=1863, Unknown=0, NotChecked=0, Total=3306 [2018-01-24 12:43:08,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-01-24 12:43:08,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 250. [2018-01-24 12:43:08,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-01-24 12:43:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 251 transitions. [2018-01-24 12:43:08,296 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 251 transitions. Word has length 240 [2018-01-24 12:43:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:43:08,296 INFO L432 AbstractCegarLoop]: Abstraction has 250 states and 251 transitions. [2018-01-24 12:43:08,296 INFO L433 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-01-24 12:43:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 251 transitions. [2018-01-24 12:43:08,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-01-24 12:43:08,297 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:43:08,297 INFO L322 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:43:08,297 INFO L371 AbstractCegarLoop]: === Iteration 42 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:43:08,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1376712953, now seen corresponding path program 40 times [2018-01-24 12:43:08,297 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:43:08,297 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:43:08,298 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:08,298 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:43:08,298 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:08,308 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:43:08,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3917 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2018-01-24 12:43:08,960 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:43:08,960 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:43:08,965 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-24 12:43:09,004 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:43:09,007 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:43:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3917 backedges. 0 proven. 3362 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2018-01-24 12:43:09,067 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:43:09,068 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-01-24 12:43:09,068 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-24 12:43:09,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-24 12:43:09,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-01-24 12:43:09,069 INFO L87 Difference]: Start difference. First operand 250 states and 251 transitions. Second operand 44 states. [2018-01-24 12:43:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:43:09,957 INFO L93 Difference]: Finished difference Result 474 states and 502 transitions. [2018-01-24 12:43:09,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-01-24 12:43:09,957 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 249 [2018-01-24 12:43:09,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:43:09,959 INFO L225 Difference]: With dead ends: 474 [2018-01-24 12:43:09,959 INFO L226 Difference]: Without dead ends: 395 [2018-01-24 12:43:09,959 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-01-24 12:43:09,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-01-24 12:43:10,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 254. [2018-01-24 12:43:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2018-01-24 12:43:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 255 transitions. [2018-01-24 12:43:10,040 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 255 transitions. Word has length 249 [2018-01-24 12:43:10,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:43:10,041 INFO L432 AbstractCegarLoop]: Abstraction has 254 states and 255 transitions. [2018-01-24 12:43:10,041 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-24 12:43:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 255 transitions. [2018-01-24 12:43:10,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-01-24 12:43:10,042 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:43:10,043 INFO L322 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:43:10,043 INFO L371 AbstractCegarLoop]: === Iteration 43 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:43:10,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1434933934, now seen corresponding path program 41 times [2018-01-24 12:43:10,043 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:43:10,043 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:43:10,044 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:10,044 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:43:10,044 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:10,062 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:43:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4083 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2018-01-24 12:43:10,774 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:43:10,774 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:43:10,779 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-24 12:43:10,790 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,792 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,793 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,794 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,795 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,797 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,798 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,800 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,801 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,804 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,806 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,809 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,812 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,815 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,818 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,822 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,826 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,831 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,839 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,857 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,866 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,874 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,882 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,892 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,903 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,914 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,928 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,942 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,957 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,973 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:10,992 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,012 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,035 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,059 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,086 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,115 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,145 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,179 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,217 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,256 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,298 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,397 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:11,400 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:43:11,405 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:43:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4083 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2018-01-24 12:43:11,506 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:43:11,506 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-01-24 12:43:11,507 INFO L409 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-01-24 12:43:11,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-01-24 12:43:11,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-01-24 12:43:11,508 INFO L87 Difference]: Start difference. First operand 254 states and 255 transitions. Second operand 45 states. [2018-01-24 12:43:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:43:12,613 INFO L93 Difference]: Finished difference Result 483 states and 512 transitions. [2018-01-24 12:43:12,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-24 12:43:12,613 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 253 [2018-01-24 12:43:12,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:43:12,615 INFO L225 Difference]: With dead ends: 483 [2018-01-24 12:43:12,615 INFO L226 Difference]: Without dead ends: 404 [2018-01-24 12:43:12,615 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-01-24 12:43:12,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-01-24 12:43:12,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 258. [2018-01-24 12:43:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-01-24 12:43:12,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 259 transitions. [2018-01-24 12:43:12,686 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 259 transitions. Word has length 253 [2018-01-24 12:43:12,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:43:12,687 INFO L432 AbstractCegarLoop]: Abstraction has 258 states and 259 transitions. [2018-01-24 12:43:12,687 INFO L433 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-01-24 12:43:12,687 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 259 transitions. [2018-01-24 12:43:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-01-24 12:43:12,687 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:43:12,688 INFO L322 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:43:12,688 INFO L371 AbstractCegarLoop]: === Iteration 44 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:43:12,688 INFO L82 PathProgramCache]: Analyzing trace with hash -588414251, now seen corresponding path program 42 times [2018-01-24 12:43:12,688 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:43:12,688 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:43:12,689 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:12,689 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:43:12,689 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:12,700 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:43:13,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4253 backedges. 0 proven. 3698 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2018-01-24 12:43:13,444 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:43:13,444 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:43:13,454 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-24 12:43:13,463 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,464 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,466 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,467 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,468 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,469 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,471 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,472 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,474 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,475 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,478 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,480 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,483 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,486 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,489 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,492 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,495 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,499 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,503 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,508 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,512 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,519 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,524 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,529 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,535 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,541 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,548 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,558 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,568 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,580 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,589 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-24 12:43:13,593 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:43:13,596 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:43:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4253 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2018-01-24 12:43:13,748 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:43:13,748 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 17] total 62 [2018-01-24 12:43:13,749 INFO L409 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-01-24 12:43:13,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-01-24 12:43:13,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1651, Invalid=2131, Unknown=0, NotChecked=0, Total=3782 [2018-01-24 12:43:13,749 INFO L87 Difference]: Start difference. First operand 258 states and 259 transitions. Second operand 62 states. [2018-01-24 12:43:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:43:14,996 INFO L93 Difference]: Finished difference Result 492 states and 522 transitions. [2018-01-24 12:43:14,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-01-24 12:43:14,996 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 257 [2018-01-24 12:43:14,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:43:14,998 INFO L225 Difference]: With dead ends: 492 [2018-01-24 12:43:14,998 INFO L226 Difference]: Without dead ends: 413 [2018-01-24 12:43:14,998 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1651, Invalid=2131, Unknown=0, NotChecked=0, Total=3782 [2018-01-24 12:43:14,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-01-24 12:43:15,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 267. [2018-01-24 12:43:15,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-01-24 12:43:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 268 transitions. [2018-01-24 12:43:15,080 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 268 transitions. Word has length 257 [2018-01-24 12:43:15,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:43:15,080 INFO L432 AbstractCegarLoop]: Abstraction has 267 states and 268 transitions. [2018-01-24 12:43:15,080 INFO L433 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-01-24 12:43:15,080 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 268 transitions. [2018-01-24 12:43:15,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-01-24 12:43:15,081 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:43:15,081 INFO L322 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:43:15,081 INFO L371 AbstractCegarLoop]: === Iteration 45 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:43:15,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1871954426, now seen corresponding path program 43 times [2018-01-24 12:43:15,081 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:43:15,082 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:43:15,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:15,082 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:43:15,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:15,096 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:43:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4504 backedges. 0 proven. 3872 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-01-24 12:43:15,858 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:43:15,858 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:43:15,863 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:43:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:15,902 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:43:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4504 backedges. 0 proven. 3872 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-01-24 12:43:15,963 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:43:15,964 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-01-24 12:43:15,964 INFO L409 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-01-24 12:43:15,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-01-24 12:43:15,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-01-24 12:43:15,965 INFO L87 Difference]: Start difference. First operand 267 states and 268 transitions. Second operand 47 states. [2018-01-24 12:43:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:43:16,899 INFO L93 Difference]: Finished difference Result 506 states and 536 transitions. [2018-01-24 12:43:16,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-01-24 12:43:16,899 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 266 [2018-01-24 12:43:16,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:43:16,900 INFO L225 Difference]: With dead ends: 506 [2018-01-24 12:43:16,900 INFO L226 Difference]: Without dead ends: 422 [2018-01-24 12:43:16,901 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-01-24 12:43:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2018-01-24 12:43:17,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 271. [2018-01-24 12:43:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-01-24 12:43:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2018-01-24 12:43:17,028 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 266 [2018-01-24 12:43:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:43:17,029 INFO L432 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2018-01-24 12:43:17,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-01-24 12:43:17,029 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2018-01-24 12:43:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-01-24 12:43:17,030 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:43:17,030 INFO L322 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:43:17,030 INFO L371 AbstractCegarLoop]: === Iteration 46 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:43:17,030 INFO L82 PathProgramCache]: Analyzing trace with hash -820982465, now seen corresponding path program 44 times [2018-01-24 12:43:17,030 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:43:17,030 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:43:17,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:17,031 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:43:17,031 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:17,043 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:43:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4682 backedges. 0 proven. 4050 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-01-24 12:43:17,850 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:43:17,850 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:43:17,855 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-24 12:43:17,865 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:17,888 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-24 12:43:17,892 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-24 12:43:17,895 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:43:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4682 backedges. 0 proven. 4050 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-01-24 12:43:17,969 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:43:17,970 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-01-24 12:43:17,970 INFO L409 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-01-24 12:43:17,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-01-24 12:43:17,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-01-24 12:43:17,970 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand 48 states. [2018-01-24 12:43:19,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:43:19,006 INFO L93 Difference]: Finished difference Result 515 states and 546 transitions. [2018-01-24 12:43:19,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-01-24 12:43:19,006 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 270 [2018-01-24 12:43:19,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:43:19,007 INFO L225 Difference]: With dead ends: 515 [2018-01-24 12:43:19,008 INFO L226 Difference]: Without dead ends: 431 [2018-01-24 12:43:19,008 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-01-24 12:43:19,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-01-24 12:43:19,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 275. [2018-01-24 12:43:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-01-24 12:43:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 276 transitions. [2018-01-24 12:43:19,096 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 276 transitions. Word has length 270 [2018-01-24 12:43:19,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:43:19,096 INFO L432 AbstractCegarLoop]: Abstraction has 275 states and 276 transitions. [2018-01-24 12:43:19,096 INFO L433 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-01-24 12:43:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 276 transitions. [2018-01-24 12:43:19,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-01-24 12:43:19,098 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:43:19,098 INFO L322 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:43:19,098 INFO L371 AbstractCegarLoop]: === Iteration 47 === [mainErr0AssertViolation, mainErr1AssertViolation]=== [2018-01-24 12:43:19,098 INFO L82 PathProgramCache]: Analyzing trace with hash -34007048, now seen corresponding path program 45 times [2018-01-24 12:43:19,098 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:43:19,099 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:43:19,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:19,099 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-24 12:43:19,100 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:43:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:43:19,119 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-24 12:43:19,879 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-24 12:43:19,884 WARN L187 ceAbstractionStarter]: Timeout [2018-01-24 12:43:19,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 12:43:19 BoogieIcfgContainer [2018-01-24 12:43:19,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 12:43:19,885 INFO L168 Benchmark]: Toolchain (without parser) took 46691.90 ms. Allocated memory was 306.2 MB in the beginning and 1.0 GB in the end (delta: 705.2 MB). Free memory was 267.2 MB in the beginning and 460.1 MB in the end (delta: -192.8 MB). Peak memory consumption was 512.3 MB. Max. memory is 5.3 GB. [2018-01-24 12:43:19,887 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 306.2 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 12:43:19,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.10 ms. Allocated memory is still 306.2 MB. Free memory was 267.2 MB in the beginning and 259.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-24 12:43:19,887 INFO L168 Benchmark]: Boogie Preprocessor took 26.12 ms. Allocated memory is still 306.2 MB. Free memory was 259.2 MB in the beginning and 257.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 12:43:19,887 INFO L168 Benchmark]: RCFGBuilder took 162.32 ms. Allocated memory is still 306.2 MB. Free memory was 257.3 MB in the beginning and 244.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 5.3 GB. [2018-01-24 12:43:19,888 INFO L168 Benchmark]: TraceAbstraction took 46313.25 ms. Allocated memory was 306.2 MB in the beginning and 1.0 GB in the end (delta: 705.2 MB). Free memory was 244.7 MB in the beginning and 460.1 MB in the end (delta: -215.4 MB). Peak memory consumption was 489.8 MB. Max. memory is 5.3 GB. [2018-01-24 12:43:19,889 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 306.2 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 181.10 ms. Allocated memory is still 306.2 MB. Free memory was 267.2 MB in the beginning and 259.2 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 26.12 ms. Allocated memory is still 306.2 MB. Free memory was 259.2 MB in the beginning and 257.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 162.32 ms. Allocated memory is still 306.2 MB. Free memory was 257.3 MB in the beginning and 244.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 46313.25 ms. Allocated memory was 306.2 MB in the beginning and 1.0 GB in the end (delta: 705.2 MB). Free memory was 244.7 MB in the beginning and 460.1 MB in the end (delta: -215.4 MB). Peak memory consumption was 489.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 13). Cancelled while BasicCegarLoop was analyzing trace of length 275 with TraceHistMax 47, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 47 known predicates. - TimeoutResultAtElement [Line: 15]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 15). Cancelled while BasicCegarLoop was analyzing trace of length 275 with TraceHistMax 47, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 47 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 2 error locations. TIMEOUT Result, 46.2s OverallTime, 47 OverallIterations, 47 TraceHistogramMax, 19.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 836 SDtfs, 7790 SDslu, 11259 SDs, 0 SdLazy, 18648 SolverSat, 2411 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7651 GetRequests, 6434 SyntacticMatches, 0 SemanticMatches, 1217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7616 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=275occurred in iteration=46, 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, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 46 MinimizatonAttempts, 3648 StatesRemovedByMinimization, 46 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 13066 NumberOfCodeBlocks, 12478 NumberOfCodeBlocksAsserted, 455 NumberOfCheckSat, 12976 ConstructedInterpolants, 0 QuantifiedInterpolants, 5229504 SizeOfPredicates, 30 NumberOfNonLiveVariables, 9335 ConjunctsInSsa, 1045 ConjunctsInUnsatCore, 90 InterpolantComputations, 2 PerfectInterpolantSequences, 37286/146342 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array3_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_12-43-19-895.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array3_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_12-43-19-895.csv Completed graceful shutdown