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/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 22:16:42,345 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 22:16:42,346 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 22:16:42,361 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 22:16:42,361 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 22:16:42,362 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 22:16:42,363 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 22:16:42,365 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 22:16:42,367 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 22:16:42,368 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 22:16:42,369 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 22:16:42,369 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 22:16:42,370 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 22:16:42,371 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 22:16:42,372 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 22:16:42,374 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 22:16:42,377 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 22:16:42,379 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 22:16:42,380 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 22:16:42,381 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 22:16:42,384 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-20 22:16:42,389 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 22:16:42,389 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 22:16:42,389 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-20 22:16:42,397 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 22:16:42,398 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 22:16:42,399 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 22:16:42,399 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 22:16:42,399 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 22:16:42,399 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 22:16:42,399 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 22:16:42,399 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 22:16:42,400 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 22:16:42,400 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 22:16:42,400 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 22:16:42,400 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 22:16:42,400 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 22:16:42,400 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 22:16:42,401 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 22:16:42,401 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 22:16:42,401 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 22:16:42,401 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 22:16:42,401 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 22:16:42,401 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 22:16:42,401 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 22:16:42,402 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 22:16:42,402 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 22:16:42,402 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 22:16:42,402 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 22:16:42,402 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 22:16:42,403 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 22:16:42,403 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 22:16:42,403 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 22:16:42,403 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 22:16:42,403 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 22:16:42,403 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 22:16:42,403 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 22:16:42,403 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 22:16:42,403 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 22:16:42,404 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 22:16:42,404 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 22:16:42,439 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 22:16:42,451 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 22:16:42,454 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 22:16:42,455 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 22:16:42,456 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 22:16:42,456 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-01-20 22:16:42,583 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 22:16:42,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 22:16:42,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 22:16:42,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 22:16:42,593 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 22:16:42,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:16:42" (1/1) ... [2018-01-20 22:16:42,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c061a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:16:42, skipping insertion in model container [2018-01-20 22:16:42,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:16:42" (1/1) ... [2018-01-20 22:16:42,612 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 22:16:42,626 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 22:16:42,738 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 22:16:42,754 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 22:16:42,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:16:42 WrapperNode [2018-01-20 22:16:42,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 22:16:42,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 22:16:42,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 22:16:42,772 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 22:16:42,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:16:42" (1/1) ... [2018-01-20 22:16:42,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:16:42" (1/1) ... [2018-01-20 22:16:42,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:16:42" (1/1) ... [2018-01-20 22:16:42,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:16:42" (1/1) ... [2018-01-20 22:16:42,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:16:42" (1/1) ... [2018-01-20 22:16:42,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:16:42" (1/1) ... [2018-01-20 22:16:42,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:16:42" (1/1) ... [2018-01-20 22:16:42,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 22:16:42,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 22:16:42,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 22:16:42,803 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 22:16:42,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:16:42" (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 [2018-01-20 22:16:42,849 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 22:16:42,850 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 22:16:42,850 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-20 22:16:42,850 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 22:16:42,850 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 22:16:42,850 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 22:16:42,851 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 22:16:42,851 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 22:16:42,851 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 22:16:42,851 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-20 22:16:42,851 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 22:16:42,851 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 22:16:42,851 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 22:16:43,025 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 22:16:43,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:16:43 BoogieIcfgContainer [2018-01-20 22:16:43,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 22:16:43,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 22:16:43,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 22:16:43,028 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 22:16:43,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 10:16:42" (1/3) ... [2018-01-20 22:16:43,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6b8197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:16:43, skipping insertion in model container [2018-01-20 22:16:43,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:16:42" (2/3) ... [2018-01-20 22:16:43,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6b8197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:16:43, skipping insertion in model container [2018-01-20 22:16:43,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:16:43" (3/3) ... [2018-01-20 22:16:43,031 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength6_true-valid-memsafety_true-termination.c [2018-01-20 22:16:43,038 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 22:16:43,044 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-20 22:16:43,091 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:16:43,091 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:16:43,092 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:16:43,092 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:16:43,092 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:16:43,092 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:16:43,092 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:16:43,092 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 22:16:43,093 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:16:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-20 22:16:43,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 22:16:43,122 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:43,123 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 22:16:43,123 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 22:16:43,129 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-20 22:16:43,131 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:43,131 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:43,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:43,191 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:43,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:16:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:16:43,264 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 22:16:43,273 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 22:16:43,281 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:16:43,281 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:16:43,282 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:16:43,282 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:16:43,282 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:16:43,282 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:16:43,282 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:16:43,282 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == fooErr0EnsuresViolation======== [2018-01-20 22:16:43,282 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:16:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-20 22:16:43,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-20 22:16:43,287 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:43,287 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:43,287 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr0EnsuresViolation]=== [2018-01-20 22:16:43,288 INFO L82 PathProgramCache]: Analyzing trace with hash 352444009, now seen corresponding path program 1 times [2018-01-20 22:16:43,288 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:43,288 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:43,289 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:43,290 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:43,290 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:43,322 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:16:43,362 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:16:43,362 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:16:43,364 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 22:16:43,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 22:16:43,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:16:43,383 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-20 22:16:43,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:43,408 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2018-01-20 22:16:43,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 22:16:43,410 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-01-20 22:16:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:43,420 INFO L225 Difference]: With dead ends: 72 [2018-01-20 22:16:43,420 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 22:16:43,424 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:16:43,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 22:16:43,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 22:16:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 22:16:43,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 22:16:43,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-20 22:16:43,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:43,541 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 22:16:43,541 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 22:16:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 22:16:43,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 22:16:43,545 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:16:43,545 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:16:43,545 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:16:43,545 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:16:43,545 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:16:43,545 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:16:43,546 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:16:43,546 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 22:16:43,546 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:16:43,548 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-20 22:16:43,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-20 22:16:43,549 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:43,549 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:43,549 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:43,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1481761889, now seen corresponding path program 1 times [2018-01-20 22:16:43,550 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:43,550 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:43,551 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:43,551 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:43,551 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:43,561 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:16:43,572 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:16:43,572 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:16:43,572 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 22:16:43,572 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 22:16:43,572 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:16:43,573 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2018-01-20 22:16:43,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:43,577 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2018-01-20 22:16:43,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 22:16:43,578 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-01-20 22:16:43,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:43,579 INFO L225 Difference]: With dead ends: 72 [2018-01-20 22:16:43,580 INFO L226 Difference]: Without dead ends: 37 [2018-01-20 22:16:43,580 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:16:43,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-01-20 22:16:43,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-01-20 22:16:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-20 22:16:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-20 22:16:43,591 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 17 [2018-01-20 22:16:43,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:43,592 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-20 22:16:43,592 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 22:16:43,592 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-20 22:16:43,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-20 22:16:43,592 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:43,593 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:43,593 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:43,593 INFO L82 PathProgramCache]: Analyzing trace with hash 499012364, now seen corresponding path program 1 times [2018-01-20 22:16:43,593 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:43,593 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:43,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:43,594 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:43,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:43,606 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:16:43,640 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:16:43,641 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 22:16:43,642 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:16:43,642 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:16:43,642 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:16:43,643 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 3 states. [2018-01-20 22:16:43,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:43,697 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2018-01-20 22:16:43,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:16:43,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-01-20 22:16:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:43,701 INFO L225 Difference]: With dead ends: 66 [2018-01-20 22:16:43,702 INFO L226 Difference]: Without dead ends: 51 [2018-01-20 22:16:43,703 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:16:43,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-20 22:16:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2018-01-20 22:16:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-20 22:16:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-01-20 22:16:43,717 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 19 [2018-01-20 22:16:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:43,717 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-01-20 22:16:43,717 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:16:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-01-20 22:16:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-20 22:16:43,718 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:43,719 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:43,719 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:43,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1504830404, now seen corresponding path program 1 times [2018-01-20 22:16:43,719 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:43,719 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:43,720 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:43,721 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:43,721 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:43,744 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:16:43,914 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:16:43,914 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 22:16:43,914 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 22:16:43,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 22:16:43,915 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-20 22:16:43,915 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2018-01-20 22:16:44,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:44,001 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2018-01-20 22:16:44,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 22:16:44,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-01-20 22:16:44,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:44,003 INFO L225 Difference]: With dead ends: 80 [2018-01-20 22:16:44,003 INFO L226 Difference]: Without dead ends: 46 [2018-01-20 22:16:44,004 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-01-20 22:16:44,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-20 22:16:44,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-01-20 22:16:44,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-20 22:16:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-01-20 22:16:44,010 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 31 [2018-01-20 22:16:44,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:44,011 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-01-20 22:16:44,011 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 22:16:44,011 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-01-20 22:16:44,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-20 22:16:44,012 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:44,012 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:44,013 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:44,013 INFO L82 PathProgramCache]: Analyzing trace with hash -151955344, now seen corresponding path program 1 times [2018-01-20 22:16:44,013 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:44,013 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:44,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:44,015 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:44,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:44,032 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:44,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:16:44,151 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:44,151 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 [2018-01-20 22:16:44,158 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:44,199 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:16:44,306 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:44,306 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-01-20 22:16:44,307 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-20 22:16:44,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-20 22:16:44,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-01-20 22:16:44,307 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 8 states. [2018-01-20 22:16:44,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:44,447 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2018-01-20 22:16:44,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 22:16:44,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2018-01-20 22:16:44,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:44,449 INFO L225 Difference]: With dead ends: 87 [2018-01-20 22:16:44,449 INFO L226 Difference]: Without dead ends: 51 [2018-01-20 22:16:44,450 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-01-20 22:16:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-20 22:16:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-01-20 22:16:44,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-20 22:16:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-01-20 22:16:44,458 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 36 [2018-01-20 22:16:44,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:44,458 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-01-20 22:16:44,458 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-20 22:16:44,458 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-01-20 22:16:44,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-20 22:16:44,460 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:44,460 INFO L322 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:44,460 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:44,461 INFO L82 PathProgramCache]: Analyzing trace with hash -524554428, now seen corresponding path program 2 times [2018-01-20 22:16:44,461 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:44,461 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:44,462 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:44,463 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:44,463 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:44,480 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:16:44,641 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:44,641 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 [2018-01-20 22:16:44,656 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-20 22:16:44,675 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:44,682 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:44,683 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:44,686 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:16:44,765 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:44,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-01-20 22:16:44,766 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-20 22:16:44,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-20 22:16:44,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-01-20 22:16:44,767 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 10 states. [2018-01-20 22:16:44,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:44,946 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2018-01-20 22:16:44,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-20 22:16:44,946 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2018-01-20 22:16:44,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:44,947 INFO L225 Difference]: With dead ends: 97 [2018-01-20 22:16:44,947 INFO L226 Difference]: Without dead ends: 56 [2018-01-20 22:16:44,948 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-01-20 22:16:44,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-20 22:16:44,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2018-01-20 22:16:44,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-01-20 22:16:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2018-01-20 22:16:44,953 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 41 [2018-01-20 22:16:44,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:44,953 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2018-01-20 22:16:44,954 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-20 22:16:44,954 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2018-01-20 22:16:44,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-20 22:16:44,955 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:44,955 INFO L322 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:44,955 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:44,955 INFO L82 PathProgramCache]: Analyzing trace with hash -438141712, now seen corresponding path program 3 times [2018-01-20 22:16:44,955 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:44,955 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:44,956 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:44,956 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:16:44,956 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:44,969 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:45,164 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:16:45,165 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:45,165 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 [2018-01-20 22:16:45,170 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-20 22:16:45,178 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:45,182 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:45,183 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:45,186 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-01-20 22:16:45,223 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:45,224 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 9 [2018-01-20 22:16:45,224 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-20 22:16:45,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-20 22:16:45,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-01-20 22:16:45,225 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 9 states. [2018-01-20 22:16:45,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:45,330 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2018-01-20 22:16:45,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-20 22:16:45,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2018-01-20 22:16:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:45,332 INFO L225 Difference]: With dead ends: 131 [2018-01-20 22:16:45,332 INFO L226 Difference]: Without dead ends: 85 [2018-01-20 22:16:45,333 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-01-20 22:16:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-01-20 22:16:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2018-01-20 22:16:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-20 22:16:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2018-01-20 22:16:45,342 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 46 [2018-01-20 22:16:45,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:45,342 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2018-01-20 22:16:45,342 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-20 22:16:45,342 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2018-01-20 22:16:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-01-20 22:16:45,345 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:45,345 INFO L322 BasicCegarLoop]: trace histogram [10, 8, 8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:45,345 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:45,346 INFO L82 PathProgramCache]: Analyzing trace with hash 515188947, now seen corresponding path program 4 times [2018-01-20 22:16:45,346 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:45,346 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:45,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:45,346 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:16:45,347 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:45,369 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 5 proven. 139 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-01-20 22:16:45,620 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:45,621 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 [2018-01-20 22:16:45,630 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-20 22:16:45,656 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:45,660 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 107 proven. 38 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-01-20 22:16:45,744 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:45,744 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-01-20 22:16:45,745 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-20 22:16:45,745 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-20 22:16:45,745 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-01-20 22:16:45,745 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 14 states. [2018-01-20 22:16:45,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:45,976 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2018-01-20 22:16:45,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-20 22:16:45,976 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 82 [2018-01-20 22:16:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:45,977 INFO L225 Difference]: With dead ends: 134 [2018-01-20 22:16:45,977 INFO L226 Difference]: Without dead ends: 75 [2018-01-20 22:16:45,978 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2018-01-20 22:16:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-01-20 22:16:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2018-01-20 22:16:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-01-20 22:16:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2018-01-20 22:16:45,985 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 82 [2018-01-20 22:16:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:45,985 INFO L432 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2018-01-20 22:16:45,985 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-20 22:16:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2018-01-20 22:16:45,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-01-20 22:16:45,987 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:45,987 INFO L322 BasicCegarLoop]: trace histogram [12, 10, 10, 10, 10, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:45,987 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash -611097235, now seen corresponding path program 5 times [2018-01-20 22:16:45,988 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:45,988 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:45,988 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:45,989 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:16:45,989 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:46,010 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:46,270 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 5 proven. 210 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-01-20 22:16:46,270 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:46,271 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 [2018-01-20 22:16:46,276 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-20 22:16:46,285 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:46,288 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:46,290 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:46,292 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:46,295 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:46,301 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:46,302 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:46,307 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 156 proven. 60 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-01-20 22:16:46,434 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:46,434 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-01-20 22:16:46,435 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-20 22:16:46,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-20 22:16:46,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-20 22:16:46,435 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 16 states. [2018-01-20 22:16:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:46,602 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2018-01-20 22:16:46,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-20 22:16:46,603 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 92 [2018-01-20 22:16:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:46,604 INFO L225 Difference]: With dead ends: 144 [2018-01-20 22:16:46,604 INFO L226 Difference]: Without dead ends: 80 [2018-01-20 22:16:46,605 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2018-01-20 22:16:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-01-20 22:16:46,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2018-01-20 22:16:46,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-01-20 22:16:46,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2018-01-20 22:16:46,614 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 92 [2018-01-20 22:16:46,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:46,614 INFO L432 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2018-01-20 22:16:46,614 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-20 22:16:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2018-01-20 22:16:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-01-20 22:16:46,615 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:46,616 INFO L322 BasicCegarLoop]: trace histogram [14, 12, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:46,616 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:46,616 INFO L82 PathProgramCache]: Analyzing trace with hash -556985837, now seen corresponding path program 6 times [2018-01-20 22:16:46,616 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:46,616 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:46,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:46,617 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:16:46,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:46,637 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 5 proven. 296 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-01-20 22:16:46,874 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:46,874 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 [2018-01-20 22:16:46,879 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-20 22:16:46,890 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:46,893 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:46,897 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:46,899 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:46,903 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:46,904 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:46,909 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2018-01-20 22:16:46,972 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:46,972 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2018-01-20 22:16:46,973 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-20 22:16:46,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-20 22:16:46,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-01-20 22:16:46,973 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 13 states. [2018-01-20 22:16:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:47,113 INFO L93 Difference]: Finished difference Result 183 states and 202 transitions. [2018-01-20 22:16:47,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-20 22:16:47,113 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2018-01-20 22:16:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:47,115 INFO L225 Difference]: With dead ends: 183 [2018-01-20 22:16:47,115 INFO L226 Difference]: Without dead ends: 114 [2018-01-20 22:16:47,115 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-01-20 22:16:47,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-20 22:16:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 91. [2018-01-20 22:16:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-01-20 22:16:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2018-01-20 22:16:47,123 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 102 [2018-01-20 22:16:47,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:47,123 INFO L432 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2018-01-20 22:16:47,123 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-20 22:16:47,123 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2018-01-20 22:16:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-01-20 22:16:47,125 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:47,125 INFO L322 BasicCegarLoop]: trace histogram [24, 21, 21, 21, 21, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:47,126 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:47,126 INFO L82 PathProgramCache]: Analyzing trace with hash 294495146, now seen corresponding path program 7 times [2018-01-20 22:16:47,126 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:47,126 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:47,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:47,127 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:16:47,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:47,152 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 8 proven. 675 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-01-20 22:16:47,522 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:47,522 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 [2018-01-20 22:16:47,530 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:47,581 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 566 proven. 119 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2018-01-20 22:16:47,866 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:47,876 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-01-20 22:16:47,877 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-20 22:16:47,877 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-20 22:16:47,877 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2018-01-20 22:16:47,878 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 20 states. [2018-01-20 22:16:48,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:48,292 INFO L93 Difference]: Finished difference Result 182 states and 198 transitions. [2018-01-20 22:16:48,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-20 22:16:48,296 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 158 [2018-01-20 22:16:48,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:48,298 INFO L225 Difference]: With dead ends: 182 [2018-01-20 22:16:48,298 INFO L226 Difference]: Without dead ends: 99 [2018-01-20 22:16:48,299 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=223, Invalid=589, Unknown=0, NotChecked=0, Total=812 [2018-01-20 22:16:48,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-20 22:16:48,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2018-01-20 22:16:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-20 22:16:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2018-01-20 22:16:48,307 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 158 [2018-01-20 22:16:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:48,308 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2018-01-20 22:16:48,308 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-01-20 22:16:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2018-01-20 22:16:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-01-20 22:16:48,311 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:48,311 INFO L322 BasicCegarLoop]: trace histogram [27, 24, 24, 24, 24, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:48,311 INFO L371 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:48,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1051815268, now seen corresponding path program 8 times [2018-01-20 22:16:48,311 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:48,311 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:48,312 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:48,312 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:48,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:48,339 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 8 proven. 870 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2018-01-20 22:16:48,692 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:48,692 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 [2018-01-20 22:16:48,697 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-20 22:16:48,709 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:48,724 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:48,727 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:48,731 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 724 proven. 156 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2018-01-20 22:16:48,898 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:48,898 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2018-01-20 22:16:48,899 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-20 22:16:48,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-20 22:16:48,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2018-01-20 22:16:48,899 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 22 states. [2018-01-20 22:16:49,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:49,136 INFO L93 Difference]: Finished difference Result 192 states and 208 transitions. [2018-01-20 22:16:49,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-20 22:16:49,137 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 173 [2018-01-20 22:16:49,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:49,138 INFO L225 Difference]: With dead ends: 192 [2018-01-20 22:16:49,138 INFO L226 Difference]: Without dead ends: 104 [2018-01-20 22:16:49,139 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2018-01-20 22:16:49,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-01-20 22:16:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2018-01-20 22:16:49,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-20 22:16:49,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2018-01-20 22:16:49,148 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 173 [2018-01-20 22:16:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:49,149 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2018-01-20 22:16:49,149 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-20 22:16:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2018-01-20 22:16:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-01-20 22:16:49,151 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:49,151 INFO L322 BasicCegarLoop]: trace histogram [30, 27, 27, 27, 27, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:49,151 INFO L371 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:49,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1142155370, now seen corresponding path program 9 times [2018-01-20 22:16:49,151 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:49,151 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:49,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:49,152 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:16:49,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:49,173 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 8 proven. 1090 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2018-01-20 22:16:49,459 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:49,459 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 [2018-01-20 22:16:49,470 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-20 22:16:49,483 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:49,486 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:49,490 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:49,495 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:49,496 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:49,499 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1935 trivial. 0 not checked. [2018-01-20 22:16:49,570 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:49,570 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6] total 17 [2018-01-20 22:16:49,571 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-20 22:16:49,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-20 22:16:49,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2018-01-20 22:16:49,571 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand 17 states. [2018-01-20 22:16:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:49,710 INFO L93 Difference]: Finished difference Result 236 states and 260 transitions. [2018-01-20 22:16:49,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-20 22:16:49,710 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 188 [2018-01-20 22:16:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:49,711 INFO L225 Difference]: With dead ends: 236 [2018-01-20 22:16:49,712 INFO L226 Difference]: Without dead ends: 143 [2018-01-20 22:16:49,712 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-01-20 22:16:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-20 22:16:49,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2018-01-20 22:16:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-20 22:16:49,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2018-01-20 22:16:49,722 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 188 [2018-01-20 22:16:49,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:49,723 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2018-01-20 22:16:49,723 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-20 22:16:49,723 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2018-01-20 22:16:49,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-01-20 22:16:49,727 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:49,727 INFO L322 BasicCegarLoop]: trace histogram [44, 40, 40, 40, 40, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:49,728 INFO L371 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:49,728 INFO L82 PathProgramCache]: Analyzing trace with hash 132824627, now seen corresponding path program 10 times [2018-01-20 22:16:49,728 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:49,728 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:49,729 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:49,729 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:16:49,729 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:49,762 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 11 proven. 1880 refuted. 0 times theorem prover too weak. 2403 trivial. 0 not checked. [2018-01-20 22:16:50,329 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:50,329 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 [2018-01-20 22:16:50,334 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-20 22:16:50,395 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:50,401 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4294 backedges. 1649 proven. 245 refuted. 0 times theorem prover too weak. 2400 trivial. 0 not checked. [2018-01-20 22:16:50,646 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:50,647 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2018-01-20 22:16:50,647 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-20 22:16:50,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-20 22:16:50,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2018-01-20 22:16:50,648 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand 26 states. [2018-01-20 22:16:51,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:51,002 INFO L93 Difference]: Finished difference Result 230 states and 251 transitions. [2018-01-20 22:16:51,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-20 22:16:51,003 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 264 [2018-01-20 22:16:51,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:51,005 INFO L225 Difference]: With dead ends: 230 [2018-01-20 22:16:51,005 INFO L226 Difference]: Without dead ends: 123 [2018-01-20 22:16:51,006 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=385, Invalid=1021, Unknown=0, NotChecked=0, Total=1406 [2018-01-20 22:16:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-01-20 22:16:51,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2018-01-20 22:16:51,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-01-20 22:16:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2018-01-20 22:16:51,015 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 264 [2018-01-20 22:16:51,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:51,016 INFO L432 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2018-01-20 22:16:51,016 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-20 22:16:51,016 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2018-01-20 22:16:51,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-01-20 22:16:51,020 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:51,020 INFO L322 BasicCegarLoop]: trace histogram [48, 44, 44, 44, 44, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:51,020 INFO L371 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:51,021 INFO L82 PathProgramCache]: Analyzing trace with hash -171303065, now seen corresponding path program 11 times [2018-01-20 22:16:51,021 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:51,021 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:51,022 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:51,022 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:16:51,022 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:51,054 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5156 backedges. 11 proven. 2259 refuted. 0 times theorem prover too weak. 2886 trivial. 0 not checked. [2018-01-20 22:16:51,695 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:51,695 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 [2018-01-20 22:16:51,703 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-20 22:16:51,723 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,726 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,737 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,743 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,748 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,753 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,759 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,765 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,773 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,782 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,792 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,807 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,823 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:51,825 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:51,832 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5156 backedges. 1976 proven. 297 refuted. 0 times theorem prover too weak. 2883 trivial. 0 not checked. [2018-01-20 22:16:52,108 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:52,108 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2018-01-20 22:16:52,109 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-20 22:16:52,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-20 22:16:52,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=570, Unknown=0, NotChecked=0, Total=756 [2018-01-20 22:16:52,109 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand 28 states. [2018-01-20 22:16:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:52,479 INFO L93 Difference]: Finished difference Result 240 states and 261 transitions. [2018-01-20 22:16:52,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-20 22:16:52,480 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 284 [2018-01-20 22:16:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:52,481 INFO L225 Difference]: With dead ends: 240 [2018-01-20 22:16:52,481 INFO L226 Difference]: Without dead ends: 128 [2018-01-20 22:16:52,481 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=449, Invalid=1191, Unknown=0, NotChecked=0, Total=1640 [2018-01-20 22:16:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-01-20 22:16:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 125. [2018-01-20 22:16:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-20 22:16:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 134 transitions. [2018-01-20 22:16:52,488 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 134 transitions. Word has length 284 [2018-01-20 22:16:52,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:52,489 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 134 transitions. [2018-01-20 22:16:52,489 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-20 22:16:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 134 transitions. [2018-01-20 22:16:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-01-20 22:16:52,491 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:52,491 INFO L322 BasicCegarLoop]: trace histogram [52, 48, 48, 48, 48, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:52,491 INFO L371 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:52,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2029948749, now seen corresponding path program 12 times [2018-01-20 22:16:52,491 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:52,491 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:52,492 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:52,492 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:16:52,492 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:52,527 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6098 backedges. 11 proven. 2673 refuted. 0 times theorem prover too weak. 3414 trivial. 0 not checked. [2018-01-20 22:16:53,052 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:53,076 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 [2018-01-20 22:16:53,081 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-20 22:16:53,103 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:53,105 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:53,108 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:53,111 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:53,122 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:53,126 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:53,132 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:53,137 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:53,143 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:16:53,144 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:53,150 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6098 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 6060 trivial. 0 not checked. [2018-01-20 22:16:53,266 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:53,266 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 21 [2018-01-20 22:16:53,267 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-20 22:16:53,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-20 22:16:53,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2018-01-20 22:16:53,268 INFO L87 Difference]: Start difference. First operand 125 states and 134 transitions. Second operand 21 states. [2018-01-20 22:16:53,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:53,490 INFO L93 Difference]: Finished difference Result 289 states and 318 transitions. [2018-01-20 22:16:53,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-20 22:16:53,491 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 304 [2018-01-20 22:16:53,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:53,492 INFO L225 Difference]: With dead ends: 289 [2018-01-20 22:16:53,492 INFO L226 Difference]: Without dead ends: 172 [2018-01-20 22:16:53,493 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2018-01-20 22:16:53,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-01-20 22:16:53,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 139. [2018-01-20 22:16:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-20 22:16:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 150 transitions. [2018-01-20 22:16:53,503 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 150 transitions. Word has length 304 [2018-01-20 22:16:53,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:53,503 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 150 transitions. [2018-01-20 22:16:53,503 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-20 22:16:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 150 transitions. [2018-01-20 22:16:53,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-01-20 22:16:53,506 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:53,506 INFO L322 BasicCegarLoop]: trace histogram [70, 65, 65, 65, 65, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:53,506 INFO L371 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:53,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1350287972, now seen corresponding path program 13 times [2018-01-20 22:16:53,507 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:53,507 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:53,507 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:53,507 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:16:53,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:53,545 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 11170 backedges. 14 proven. 4024 refuted. 0 times theorem prover too weak. 7132 trivial. 0 not checked. [2018-01-20 22:16:54,217 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:54,217 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 [2018-01-20 22:16:54,222 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:54,303 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 11170 backedges. 3626 proven. 416 refuted. 0 times theorem prover too weak. 7128 trivial. 0 not checked. [2018-01-20 22:16:54,615 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:54,615 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2018-01-20 22:16:54,615 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-20 22:16:54,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-20 22:16:54,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2018-01-20 22:16:54,616 INFO L87 Difference]: Start difference. First operand 139 states and 150 transitions. Second operand 32 states. [2018-01-20 22:16:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:55,016 INFO L93 Difference]: Finished difference Result 278 states and 304 transitions. [2018-01-20 22:16:55,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-20 22:16:55,016 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 400 [2018-01-20 22:16:55,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:55,018 INFO L225 Difference]: With dead ends: 278 [2018-01-20 22:16:55,018 INFO L226 Difference]: Without dead ends: 147 [2018-01-20 22:16:55,020 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=592, Invalid=1570, Unknown=0, NotChecked=0, Total=2162 [2018-01-20 22:16:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-20 22:16:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2018-01-20 22:16:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-20 22:16:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 155 transitions. [2018-01-20 22:16:55,029 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 155 transitions. Word has length 400 [2018-01-20 22:16:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:55,029 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 155 transitions. [2018-01-20 22:16:55,029 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-20 22:16:55,029 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 155 transitions. [2018-01-20 22:16:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-01-20 22:16:55,032 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:55,033 INFO L322 BasicCegarLoop]: trace histogram [75, 70, 70, 70, 70, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:55,033 INFO L371 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:55,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1570210812, now seen corresponding path program 14 times [2018-01-20 22:16:55,033 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:55,033 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:55,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:55,034 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:16:55,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:55,073 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12895 backedges. 14 proven. 4647 refuted. 0 times theorem prover too weak. 8234 trivial. 0 not checked. [2018-01-20 22:16:56,128 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:56,128 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 [2018-01-20 22:16:56,134 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-20 22:16:56,165 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:56,216 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:16:56,224 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:56,234 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 12895 backedges. 4182 proven. 483 refuted. 0 times theorem prover too weak. 8230 trivial. 0 not checked. [2018-01-20 22:16:56,935 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:56,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2018-01-20 22:16:56,936 INFO L409 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-01-20 22:16:56,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-01-20 22:16:56,937 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2018-01-20 22:16:56,937 INFO L87 Difference]: Start difference. First operand 144 states and 155 transitions. Second operand 34 states. [2018-01-20 22:16:57,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:16:57,537 INFO L93 Difference]: Finished difference Result 288 states and 314 transitions. [2018-01-20 22:16:57,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-20 22:16:57,537 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 425 [2018-01-20 22:16:57,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:16:57,538 INFO L225 Difference]: With dead ends: 288 [2018-01-20 22:16:57,538 INFO L226 Difference]: Without dead ends: 152 [2018-01-20 22:16:57,540 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=671, Invalid=1779, Unknown=0, NotChecked=0, Total=2450 [2018-01-20 22:16:57,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-20 22:16:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 149. [2018-01-20 22:16:57,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-20 22:16:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2018-01-20 22:16:57,548 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 425 [2018-01-20 22:16:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:16:57,549 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2018-01-20 22:16:57,549 INFO L433 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-01-20 22:16:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2018-01-20 22:16:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-01-20 22:16:57,552 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:16:57,552 INFO L322 BasicCegarLoop]: trace histogram [80, 75, 75, 75, 75, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:16:57,552 INFO L371 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:16:57,553 INFO L82 PathProgramCache]: Analyzing trace with hash -877517212, now seen corresponding path program 15 times [2018-01-20 22:16:57,553 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:16:57,553 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:16:57,554 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:57,554 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:16:57,554 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:16:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:16:57,591 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:16:58,057 WARN L146 SmtUtils]: Spent 112ms on a formula simplification. DAG size of input: 13 DAG size of output 12 [2018-01-20 22:16:58,281 WARN L146 SmtUtils]: Spent 124ms on a formula simplification. DAG size of input: 13 DAG size of output 12 [2018-01-20 22:16:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 14745 backedges. 14 proven. 5315 refuted. 0 times theorem prover too weak. 9416 trivial. 0 not checked. [2018-01-20 22:16:58,852 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:16:58,852 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 [2018-01-20 22:16:58,860 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-20 22:16:58,896 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,901 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,906 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,912 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,920 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,927 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,934 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,942 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,952 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,960 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,968 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,980 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,989 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:58,999 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:59,010 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:59,027 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:59,039 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:16:59,042 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:16:59,049 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:16:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14745 backedges. 4778 proven. 555 refuted. 0 times theorem prover too weak. 9412 trivial. 0 not checked. [2018-01-20 22:16:59,516 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:16:59,516 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2018-01-20 22:16:59,517 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-20 22:16:59,517 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-20 22:16:59,517 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=950, Unknown=0, NotChecked=0, Total=1260 [2018-01-20 22:16:59,518 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 36 states. [2018-01-20 22:17:00,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:17:00,158 INFO L93 Difference]: Finished difference Result 298 states and 324 transitions. [2018-01-20 22:17:00,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-01-20 22:17:00,158 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 450 [2018-01-20 22:17:00,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:17:00,160 INFO L225 Difference]: With dead ends: 298 [2018-01-20 22:17:00,160 INFO L226 Difference]: Without dead ends: 157 [2018-01-20 22:17:00,161 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=755, Invalid=2001, Unknown=0, NotChecked=0, Total=2756 [2018-01-20 22:17:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-20 22:17:00,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2018-01-20 22:17:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-20 22:17:00,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 165 transitions. [2018-01-20 22:17:00,170 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 165 transitions. Word has length 450 [2018-01-20 22:17:00,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:17:00,171 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 165 transitions. [2018-01-20 22:17:00,171 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-20 22:17:00,171 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 165 transitions. [2018-01-20 22:17:00,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-01-20 22:17:00,173 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:17:00,173 INFO L322 BasicCegarLoop]: trace histogram [85, 80, 80, 80, 80, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:17:00,173 INFO L371 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:17:00,173 INFO L82 PathProgramCache]: Analyzing trace with hash 982430980, now seen corresponding path program 16 times [2018-01-20 22:17:00,174 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:17:00,174 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:17:00,174 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:00,174 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:17:00,174 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:17:00,216 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:17:01,344 INFO L134 CoverageAnalysis]: Checked inductivity of 16720 backedges. 14 proven. 6028 refuted. 0 times theorem prover too weak. 10678 trivial. 0 not checked. [2018-01-20 22:17:01,345 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:17:01,345 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 [2018-01-20 22:17:01,350 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-20 22:17:01,480 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:17:01,487 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:17:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 16720 backedges. 5414 proven. 632 refuted. 0 times theorem prover too weak. 10674 trivial. 0 not checked. [2018-01-20 22:17:02,079 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:17:02,079 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2018-01-20 22:17:02,080 INFO L409 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-01-20 22:17:02,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-01-20 22:17:02,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2018-01-20 22:17:02,080 INFO L87 Difference]: Start difference. First operand 154 states and 165 transitions. Second operand 38 states. [2018-01-20 22:17:02,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:17:02,612 INFO L93 Difference]: Finished difference Result 308 states and 334 transitions. [2018-01-20 22:17:02,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-20 22:17:02,612 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 475 [2018-01-20 22:17:02,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:17:02,614 INFO L225 Difference]: With dead ends: 308 [2018-01-20 22:17:02,614 INFO L226 Difference]: Without dead ends: 162 [2018-01-20 22:17:02,616 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=844, Invalid=2236, Unknown=0, NotChecked=0, Total=3080 [2018-01-20 22:17:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-20 22:17:02,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2018-01-20 22:17:02,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-01-20 22:17:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2018-01-20 22:17:02,626 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 475 [2018-01-20 22:17:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:17:02,626 INFO L432 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2018-01-20 22:17:02,626 INFO L433 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-01-20 22:17:02,626 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2018-01-20 22:17:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-01-20 22:17:02,631 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:17:02,632 INFO L322 BasicCegarLoop]: trace histogram [90, 85, 85, 85, 85, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:17:02,632 INFO L371 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:17:02,632 INFO L82 PathProgramCache]: Analyzing trace with hash -444773788, now seen corresponding path program 17 times [2018-01-20 22:17:02,632 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:17:02,632 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:17:02,633 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:02,633 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:17:02,633 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:17:02,676 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:17:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 18820 backedges. 14 proven. 6786 refuted. 0 times theorem prover too weak. 12020 trivial. 0 not checked. [2018-01-20 22:17:03,752 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:17:03,752 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 [2018-01-20 22:17:03,757 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-20 22:17:03,787 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,789 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,790 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,791 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,792 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,794 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,795 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,804 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,806 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,808 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,810 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,814 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,817 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,820 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,823 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,826 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,830 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,834 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,838 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,842 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,849 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,856 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,863 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,871 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,880 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,889 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,900 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,912 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,924 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,938 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,954 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,971 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:03,990 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:04,010 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:04,033 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:04,036 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:17:04,044 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:17:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18820 backedges. 10662 proven. 714 refuted. 0 times theorem prover too weak. 7444 trivial. 0 not checked. [2018-01-20 22:17:04,499 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:17:04,499 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2018-01-20 22:17:04,500 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-01-20 22:17:04,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-01-20 22:17:04,500 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2018-01-20 22:17:04,500 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 40 states. [2018-01-20 22:17:05,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:17:05,207 INFO L93 Difference]: Finished difference Result 318 states and 344 transitions. [2018-01-20 22:17:05,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-01-20 22:17:05,208 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 500 [2018-01-20 22:17:05,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:17:05,210 INFO L225 Difference]: With dead ends: 318 [2018-01-20 22:17:05,210 INFO L226 Difference]: Without dead ends: 167 [2018-01-20 22:17:05,212 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=938, Invalid=2484, Unknown=0, NotChecked=0, Total=3422 [2018-01-20 22:17:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-01-20 22:17:05,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2018-01-20 22:17:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-01-20 22:17:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2018-01-20 22:17:05,221 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 500 [2018-01-20 22:17:05,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:17:05,221 INFO L432 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2018-01-20 22:17:05,221 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-01-20 22:17:05,221 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2018-01-20 22:17:05,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2018-01-20 22:17:05,225 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:17:05,226 INFO L322 BasicCegarLoop]: trace histogram [95, 90, 90, 90, 90, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:17:05,226 INFO L371 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:17:05,226 INFO L82 PathProgramCache]: Analyzing trace with hash 359181828, now seen corresponding path program 18 times [2018-01-20 22:17:05,226 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:17:05,226 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:17:05,227 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:05,227 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:17:05,227 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:17:05,267 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:17:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 21045 backedges. 14 proven. 7589 refuted. 0 times theorem prover too weak. 13442 trivial. 0 not checked. [2018-01-20 22:17:06,523 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:17:06,523 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 [2018-01-20 22:17:06,527 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-20 22:17:06,558 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,560 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,563 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,565 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,568 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,572 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,576 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,580 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,585 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,589 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,592 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,597 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,601 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,605 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,609 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,614 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,622 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,628 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,634 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,641 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,650 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,657 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,667 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,675 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,685 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,698 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:06,700 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:17:06,707 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:17:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 21045 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 20985 trivial. 0 not checked. [2018-01-20 22:17:06,920 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:17:06,920 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8] total 28 [2018-01-20 22:17:06,921 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-20 22:17:06,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-20 22:17:06,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=517, Unknown=0, NotChecked=0, Total=756 [2018-01-20 22:17:06,921 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 28 states. [2018-01-20 22:17:07,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:17:07,405 INFO L93 Difference]: Finished difference Result 372 states and 406 transitions. [2018-01-20 22:17:07,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-20 22:17:07,406 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 525 [2018-01-20 22:17:07,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:17:07,408 INFO L225 Difference]: With dead ends: 372 [2018-01-20 22:17:07,408 INFO L226 Difference]: Without dead ends: 216 [2018-01-20 22:17:07,410 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=260, Invalid=552, Unknown=0, NotChecked=0, Total=812 [2018-01-20 22:17:07,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-20 22:17:07,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 178. [2018-01-20 22:17:07,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-20 22:17:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 191 transitions. [2018-01-20 22:17:07,420 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 191 transitions. Word has length 525 [2018-01-20 22:17:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:17:07,421 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 191 transitions. [2018-01-20 22:17:07,421 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-20 22:17:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 191 transitions. [2018-01-20 22:17:07,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-01-20 22:17:07,426 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:17:07,426 INFO L322 BasicCegarLoop]: trace histogram [120, 114, 114, 114, 114, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:17:07,426 INFO L371 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:17:07,427 INFO L82 PathProgramCache]: Analyzing trace with hash 440436513, now seen corresponding path program 19 times [2018-01-20 22:17:07,427 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:17:07,427 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:17:07,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:07,428 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:17:07,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:17:07,484 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:17:09,003 INFO L134 CoverageAnalysis]: Checked inductivity of 33750 backedges. 17 proven. 10323 refuted. 0 times theorem prover too weak. 23410 trivial. 0 not checked. [2018-01-20 22:17:09,003 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:17:09,003 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 [2018-01-20 22:17:09,009 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:17:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:17:09,110 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:17:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 33750 backedges. 9452 proven. 893 refuted. 0 times theorem prover too weak. 23405 trivial. 0 not checked. [2018-01-20 22:17:09,691 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:17:09,691 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2018-01-20 22:17:09,691 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-20 22:17:09,692 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-20 22:17:09,692 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=1426, Unknown=0, NotChecked=0, Total=1892 [2018-01-20 22:17:09,692 INFO L87 Difference]: Start difference. First operand 178 states and 191 transitions. Second operand 44 states. [2018-01-20 22:17:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:17:10,323 INFO L93 Difference]: Finished difference Result 356 states and 387 transitions. [2018-01-20 22:17:10,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-20 22:17:10,323 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 656 [2018-01-20 22:17:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:17:10,326 INFO L225 Difference]: With dead ends: 356 [2018-01-20 22:17:10,326 INFO L226 Difference]: Without dead ends: 186 [2018-01-20 22:17:10,328 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 636 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1141, Invalid=3019, Unknown=0, NotChecked=0, Total=4160 [2018-01-20 22:17:10,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-20 22:17:10,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2018-01-20 22:17:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-20 22:17:10,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 196 transitions. [2018-01-20 22:17:10,339 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 196 transitions. Word has length 656 [2018-01-20 22:17:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:17:10,340 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 196 transitions. [2018-01-20 22:17:10,340 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-20 22:17:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 196 transitions. [2018-01-20 22:17:10,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2018-01-20 22:17:10,346 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:17:10,346 INFO L322 BasicCegarLoop]: trace histogram [126, 120, 120, 120, 120, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:17:10,346 INFO L371 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:17:10,347 INFO L82 PathProgramCache]: Analyzing trace with hash 138230419, now seen corresponding path program 20 times [2018-01-20 22:17:10,347 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:17:10,347 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:17:10,347 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:10,348 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:17:10,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:17:10,401 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:17:11,808 INFO L134 CoverageAnalysis]: Checked inductivity of 37317 backedges. 17 proven. 11415 refuted. 0 times theorem prover too weak. 25885 trivial. 0 not checked. [2018-01-20 22:17:11,808 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:17:11,808 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 [2018-01-20 22:17:11,813 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-20 22:17:11,842 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:11,901 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:11,912 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:17:11,919 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:17:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 37317 backedges. 10447 proven. 990 refuted. 0 times theorem prover too weak. 25880 trivial. 0 not checked. [2018-01-20 22:17:12,649 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:17:12,649 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2018-01-20 22:17:12,650 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-20 22:17:12,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-20 22:17:12,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=1560, Unknown=0, NotChecked=0, Total=2070 [2018-01-20 22:17:12,651 INFO L87 Difference]: Start difference. First operand 183 states and 196 transitions. Second operand 46 states. [2018-01-20 22:17:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:17:13,309 INFO L93 Difference]: Finished difference Result 366 states and 397 transitions. [2018-01-20 22:17:13,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-20 22:17:13,309 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 686 [2018-01-20 22:17:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:17:13,310 INFO L225 Difference]: With dead ends: 366 [2018-01-20 22:17:13,310 INFO L226 Difference]: Without dead ends: 191 [2018-01-20 22:17:13,312 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1250, Invalid=3306, Unknown=0, NotChecked=0, Total=4556 [2018-01-20 22:17:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-20 22:17:13,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2018-01-20 22:17:13,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-01-20 22:17:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 201 transitions. [2018-01-20 22:17:13,318 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 201 transitions. Word has length 686 [2018-01-20 22:17:13,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:17:13,319 INFO L432 AbstractCegarLoop]: Abstraction has 188 states and 201 transitions. [2018-01-20 22:17:13,319 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-20 22:17:13,319 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 201 transitions. [2018-01-20 22:17:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2018-01-20 22:17:13,323 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:17:13,323 INFO L322 BasicCegarLoop]: trace histogram [132, 126, 126, 126, 126, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:17:13,323 INFO L371 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:17:13,324 INFO L82 PathProgramCache]: Analyzing trace with hash 29517409, now seen corresponding path program 21 times [2018-01-20 22:17:13,324 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:17:13,324 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:17:13,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:13,324 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:17:13,325 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:17:13,361 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:17:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 41064 backedges. 17 proven. 12562 refuted. 0 times theorem prover too weak. 28485 trivial. 0 not checked. [2018-01-20 22:17:14,853 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:17:14,853 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 [2018-01-20 22:17:14,858 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-20 22:17:14,890 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,893 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,897 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,902 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,908 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,913 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,918 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,937 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,943 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,952 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,959 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,968 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,977 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:14,989 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:15,000 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:15,012 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:15,030 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:15,048 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:15,068 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:15,090 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:15,118 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:15,140 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:15,165 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-20 22:17:15,168 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:17:15,179 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:17:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 41064 backedges. 11492 proven. 1092 refuted. 0 times theorem prover too weak. 28480 trivial. 0 not checked. [2018-01-20 22:17:15,927 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:17:15,927 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2018-01-20 22:17:15,928 INFO L409 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-01-20 22:17:15,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-01-20 22:17:15,929 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2018-01-20 22:17:15,929 INFO L87 Difference]: Start difference. First operand 188 states and 201 transitions. Second operand 48 states. [2018-01-20 22:17:16,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:17:16,601 INFO L93 Difference]: Finished difference Result 376 states and 407 transitions. [2018-01-20 22:17:16,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-20 22:17:16,602 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 716 [2018-01-20 22:17:16,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:17:16,603 INFO L225 Difference]: With dead ends: 376 [2018-01-20 22:17:16,603 INFO L226 Difference]: Without dead ends: 196 [2018-01-20 22:17:16,606 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 694 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1364, Invalid=3606, Unknown=0, NotChecked=0, Total=4970 [2018-01-20 22:17:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-01-20 22:17:16,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2018-01-20 22:17:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-20 22:17:16,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 206 transitions. [2018-01-20 22:17:16,616 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 206 transitions. Word has length 716 [2018-01-20 22:17:16,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:17:16,617 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 206 transitions. [2018-01-20 22:17:16,617 INFO L433 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-01-20 22:17:16,617 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 206 transitions. [2018-01-20 22:17:16,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2018-01-20 22:17:16,624 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:17:16,624 INFO L322 BasicCegarLoop]: trace histogram [138, 132, 132, 132, 132, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:17:16,624 INFO L371 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:17:16,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1172108883, now seen corresponding path program 22 times [2018-01-20 22:17:16,625 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:17:16,625 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:17:16,625 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:16,626 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:17:16,626 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:17:16,680 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:17:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 44991 backedges. 17 proven. 13764 refuted. 0 times theorem prover too weak. 31210 trivial. 0 not checked. [2018-01-20 22:17:18,219 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:17:18,219 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 [2018-01-20 22:17:18,224 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-20 22:17:18,446 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:17:18,455 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:17:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 44991 backedges. 12587 proven. 1199 refuted. 0 times theorem prover too weak. 31205 trivial. 0 not checked. [2018-01-20 22:17:19,249 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:17:19,250 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2018-01-20 22:17:19,250 INFO L409 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-01-20 22:17:19,251 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-01-20 22:17:19,251 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=1846, Unknown=0, NotChecked=0, Total=2450 [2018-01-20 22:17:19,251 INFO L87 Difference]: Start difference. First operand 193 states and 206 transitions. Second operand 50 states. [2018-01-20 22:17:19,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:17:19,965 INFO L93 Difference]: Finished difference Result 386 states and 417 transitions. [2018-01-20 22:17:19,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-20 22:17:19,965 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 746 [2018-01-20 22:17:19,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:17:19,966 INFO L225 Difference]: With dead ends: 386 [2018-01-20 22:17:19,966 INFO L226 Difference]: Without dead ends: 201 [2018-01-20 22:17:19,968 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1483, Invalid=3919, Unknown=0, NotChecked=0, Total=5402 [2018-01-20 22:17:19,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-01-20 22:17:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2018-01-20 22:17:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-01-20 22:17:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 211 transitions. [2018-01-20 22:17:19,977 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 211 transitions. Word has length 746 [2018-01-20 22:17:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:17:19,978 INFO L432 AbstractCegarLoop]: Abstraction has 198 states and 211 transitions. [2018-01-20 22:17:19,978 INFO L433 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-01-20 22:17:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 211 transitions. [2018-01-20 22:17:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2018-01-20 22:17:19,985 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:17:19,985 INFO L322 BasicCegarLoop]: trace histogram [144, 138, 138, 138, 138, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:17:19,985 INFO L371 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:17:19,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1429599649, now seen corresponding path program 23 times [2018-01-20 22:17:19,986 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:17:19,986 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:17:19,987 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:19,987 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:17:19,987 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:17:20,046 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:17:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 49098 backedges. 17 proven. 15021 refuted. 0 times theorem prover too weak. 34060 trivial. 0 not checked. [2018-01-20 22:17:21,754 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:17:21,754 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 [2018-01-20 22:17:21,760 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-20 22:17:21,792 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,801 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,802 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,804 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,805 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,806 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,808 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,809 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,811 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,813 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,817 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,820 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,822 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,825 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,828 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,830 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,834 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,837 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,840 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,843 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,847 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,851 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,855 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,860 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,864 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,869 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,875 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,880 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,886 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,893 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,900 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,907 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,915 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,923 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,932 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,942 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,952 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,962 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,974 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:21,988 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:22,003 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-20 22:17:22,004 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:17:22,009 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:17:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 49098 backedges. 24724 proven. 1311 refuted. 0 times theorem prover too weak. 23063 trivial. 0 not checked. [2018-01-20 22:17:22,827 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-20 22:17:22,827 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2018-01-20 22:17:22,827 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-20 22:17:22,828 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-20 22:17:22,828 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=654, Invalid=1998, Unknown=0, NotChecked=0, Total=2652 [2018-01-20 22:17:22,829 INFO L87 Difference]: Start difference. First operand 198 states and 211 transitions. Second operand 52 states. [2018-01-20 22:17:23,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:17:23,612 INFO L93 Difference]: Finished difference Result 396 states and 427 transitions. [2018-01-20 22:17:23,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-20 22:17:23,613 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 776 [2018-01-20 22:17:23,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:17:23,614 INFO L225 Difference]: With dead ends: 396 [2018-01-20 22:17:23,614 INFO L226 Difference]: Without dead ends: 206 [2018-01-20 22:17:23,615 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 752 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1607, Invalid=4245, Unknown=0, NotChecked=0, Total=5852 [2018-01-20 22:17:23,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-01-20 22:17:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2018-01-20 22:17:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-01-20 22:17:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 216 transitions. [2018-01-20 22:17:23,624 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 216 transitions. Word has length 776 [2018-01-20 22:17:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:17:23,624 INFO L432 AbstractCegarLoop]: Abstraction has 203 states and 216 transitions. [2018-01-20 22:17:23,624 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-20 22:17:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 216 transitions. [2018-01-20 22:17:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2018-01-20 22:17:23,631 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:17:23,631 INFO L322 BasicCegarLoop]: trace histogram [150, 144, 144, 144, 144, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:17:23,631 INFO L371 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:17:23,631 INFO L82 PathProgramCache]: Analyzing trace with hash -546536941, now seen corresponding path program 24 times [2018-01-20 22:17:23,632 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:17:23,632 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:17:23,632 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:23,633 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-20 22:17:23,633 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:17:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:17:23,691 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:17:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 53385 backedges. 17 proven. 16333 refuted. 0 times theorem prover too weak. 37035 trivial. 0 not checked. [2018-01-20 22:17:25,643 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:17:25,643 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 [2018-01-20 22:17:25,647 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-20 22:17:25,680 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,682 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,684 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,686 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,689 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,691 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,694 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,697 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,702 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,705 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,709 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,712 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,716 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,721 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,727 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,731 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,737 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,743 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,749 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,754 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,763 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,773 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,784 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,792 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,804 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,815 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,824 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,836 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,848 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,863 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command Received shutdown request... [2018-01-20 22:17:25,880 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,892 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,907 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,923 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,940 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,955 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,975 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:25,994 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,014 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,037 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,058 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,085 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,116 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,140 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,166 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,196 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,222 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,251 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,288 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,323 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,357 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-20 22:17:26,360 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-20 22:17:26,369 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:17:26,386 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-20 22:17:26,386 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-20 22:17:26,389 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:17:26,389 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:17:26,389 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:17:26,389 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:17:26,389 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:17:26,389 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:17:26,389 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:17:26,390 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 22:17:26,390 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:17:26,391 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2018-01-20 22:17:26,391 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-20 22:17:26,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 10:17:26 BoogieIcfgContainer [2018-01-20 22:17:26,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 22:17:26,393 INFO L168 Benchmark]: Toolchain (without parser) took 43809.50 ms. Allocated memory was 303.0 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 262.3 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 203.2 MB. Max. memory is 5.3 GB. [2018-01-20 22:17:26,395 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 303.0 MB. Free memory is still 267.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 22:17:26,395 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.23 ms. Allocated memory is still 303.0 MB. Free memory was 261.3 MB in the beginning and 253.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-01-20 22:17:26,395 INFO L168 Benchmark]: Boogie Preprocessor took 30.70 ms. Allocated memory is still 303.0 MB. Free memory was 253.3 MB in the beginning and 251.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-20 22:17:26,396 INFO L168 Benchmark]: RCFGBuilder took 222.37 ms. Allocated memory is still 303.0 MB. Free memory was 251.2 MB in the beginning and 236.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 5.3 GB. [2018-01-20 22:17:26,396 INFO L168 Benchmark]: TraceAbstraction took 43366.46 ms. Allocated memory was 303.0 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 236.5 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 177.4 MB. Max. memory is 5.3 GB. [2018-01-20 22:17:26,398 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 303.0 MB. Free memory is still 267.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 184.23 ms. Allocated memory is still 303.0 MB. Free memory was 261.3 MB in the beginning and 253.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.70 ms. Allocated memory is still 303.0 MB. Free memory was 253.3 MB in the beginning and 251.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 222.37 ms. Allocated memory is still 303.0 MB. Free memory was 251.2 MB in the beginning and 236.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 43366.46 ms. Allocated memory was 303.0 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 236.5 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 177.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: fooErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 807 with TraceHistMax 150, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 28 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. TIMEOUT Result, 42.8s OverallTime, 27 OverallIterations, 150 TraceHistogramMax, 9.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 878 SDtfs, 2055 SDslu, 12573 SDs, 0 SdLazy, 4317 SolverSat, 149 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8750 GetRequests, 7870 SyntacticMatches, 0 SemanticMatches, 880 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7371 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=26, 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: 0.2s AutomataMinimizationTime, 26 MinimizatonAttempts, 207 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 23.5s InterpolantComputationTime, 16317 NumberOfCodeBlocks, 14714 NumberOfCodeBlocksAsserted, 227 NumberOfCheckSat, 16268 ConstructedInterpolants, 0 QuantifiedInterpolants, 22315362 SizeOfPredicates, 41 NumberOfNonLiveVariables, 10989 ConjunctsInSsa, 325 ConjunctsInUnsatCore, 49 InterpolantComputations, 3 PerfectInterpolantSequences, 528653/645592 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 21). Cancelled while IsEmpty was searching accepting run (input had 41 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 41 locations, 4 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_22-17-26-407.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_22-17-26-407.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_22-17-26-407.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_22-17-26-407.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength6_true-valid-memsafety_true-termination.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_22-17-26-407.csv Completed graceful shutdown