java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 12:33:10,697 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 12:33:10,699 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 12:33:10,715 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 12:33:10,715 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 12:33:10,716 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 12:33:10,718 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 12:33:10,719 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 12:33:10,721 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 12:33:10,722 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 12:33:10,723 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 12:33:10,723 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 12:33:10,725 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 12:33:10,726 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 12:33:10,727 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 12:33:10,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 12:33:10,732 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 12:33:10,734 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 12:33:10,735 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 12:33:10,737 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 12:33:10,739 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 12:33:10,739 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 12:33:10,740 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 12:33:10,741 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 12:33:10,742 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 12:33:10,743 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 12:33:10,743 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 12:33:10,744 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 12:33:10,744 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 12:33:10,744 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 12:33:10,745 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 12:33:10,745 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf [2018-01-24 12:33:10,754 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 12:33:10,754 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 12:33:10,755 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 12:33:10,755 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 12:33:10,755 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 12:33:10,756 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 12:33:10,756 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 12:33:10,756 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 12:33:10,756 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 12:33:10,756 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 12:33:10,757 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 12:33:10,757 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 12:33:10,757 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 12:33:10,757 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 12:33:10,757 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 12:33:10,757 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 12:33:10,757 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 12:33:10,758 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 12:33:10,758 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 12:33:10,758 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 12:33:10,758 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 12:33:10,758 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 12:33:10,759 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 12:33:10,759 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 12:33:10,759 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 12:33:10,759 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 12:33:10,759 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 12:33:10,760 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 12:33:10,760 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 12:33:10,760 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 12:33:10,760 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 12:33:10,760 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 12:33:10,761 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 12:33:10,761 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 12:33:10,796 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 12:33:10,807 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 12:33:10,810 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 12:33:10,812 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 12:33:10,812 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 12:33:10,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i [2018-01-24 12:33:11,006 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 12:33:11,013 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 12:33:11,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 12:33:11,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 12:33:11,021 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 12:33:11,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:33:10" (1/1) ... [2018-01-24 12:33:11,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3ee212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:33:11, skipping insertion in model container [2018-01-24 12:33:11,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:33:10" (1/1) ... [2018-01-24 12:33:11,046 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:33:11,091 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:33:11,211 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:33:11,230 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:33:11,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:33:11 WrapperNode [2018-01-24 12:33:11,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 12:33:11,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 12:33:11,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 12:33:11,239 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 12:33:11,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:33:11" (1/1) ... [2018-01-24 12:33:11,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:33:11" (1/1) ... [2018-01-24 12:33:11,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:33:11" (1/1) ... [2018-01-24 12:33:11,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:33:11" (1/1) ... [2018-01-24 12:33:11,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:33:11" (1/1) ... [2018-01-24 12:33:11,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:33:11" (1/1) ... [2018-01-24 12:33:11,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:33:11" (1/1) ... [2018-01-24 12:33:11,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 12:33:11,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 12:33:11,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 12:33:11,280 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 12:33:11,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:33:11" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 12:33:11,328 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 12:33:11,328 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 12:33:11,329 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 12:33:11,329 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 12:33:11,329 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 12:33:11,329 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 12:33:11,329 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 12:33:11,329 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 12:33:11,330 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 12:33:11,330 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 12:33:11,330 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 12:33:11,330 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 12:33:11,330 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 12:33:11,330 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 12:33:11,331 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 12:33:11,331 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 12:33:11,331 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 12:33:11,923 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 12:33:11,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:33:11 BoogieIcfgContainer [2018-01-24 12:33:11,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 12:33:11,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 12:33:11,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 12:33:11,927 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 12:33:11,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 12:33:10" (1/3) ... [2018-01-24 12:33:11,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e962970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:33:11, skipping insertion in model container [2018-01-24 12:33:11,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:33:11" (2/3) ... [2018-01-24 12:33:11,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e962970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:33:11, skipping insertion in model container [2018-01-24 12:33:11,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:33:11" (3/3) ... [2018-01-24 12:33:11,930 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i [2018-01-24 12:33:11,937 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 12:33:11,944 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 67 error locations. [2018-01-24 12:33:11,990 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 12:33:11,991 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 12:33:11,991 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 12:33:11,991 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 12:33:11,991 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 12:33:11,991 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 12:33:11,992 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 12:33:11,992 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 12:33:11,993 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 12:33:12,016 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2018-01-24 12:33:12,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 12:33:12,022 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:12,023 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:12,023 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:12,026 INFO L82 PathProgramCache]: Analyzing trace with hash 726209746, now seen corresponding path program 1 times [2018-01-24 12:33:12,028 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:12,029 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:12,078 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:12,079 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:12,079 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:12,123 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:12,189 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:12,190 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 12:33:12,191 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 12:33:12,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 12:33:12,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:33:12,209 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 4 states. [2018-01-24 12:33:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:12,584 INFO L93 Difference]: Finished difference Result 316 states and 377 transitions. [2018-01-24 12:33:12,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 12:33:12,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 12:33:12,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:12,597 INFO L225 Difference]: With dead ends: 316 [2018-01-24 12:33:12,597 INFO L226 Difference]: Without dead ends: 177 [2018-01-24 12:33:12,600 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:33:12,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-01-24 12:33:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 154. [2018-01-24 12:33:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-01-24 12:33:12,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 159 transitions. [2018-01-24 12:33:12,640 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 159 transitions. Word has length 8 [2018-01-24 12:33:12,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:12,641 INFO L432 AbstractCegarLoop]: Abstraction has 154 states and 159 transitions. [2018-01-24 12:33:12,641 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 12:33:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 159 transitions. [2018-01-24 12:33:12,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 12:33:12,641 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:12,641 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:12,641 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:12,642 INFO L82 PathProgramCache]: Analyzing trace with hash 726209747, now seen corresponding path program 1 times [2018-01-24 12:33:12,642 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:12,642 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:12,643 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:12,643 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:12,643 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:12,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:12,759 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:12,759 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 12:33:12,761 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 12:33:12,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 12:33:12,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:33:12,761 INFO L87 Difference]: Start difference. First operand 154 states and 159 transitions. Second operand 4 states. [2018-01-24 12:33:12,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:12,916 INFO L93 Difference]: Finished difference Result 154 states and 159 transitions. [2018-01-24 12:33:12,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 12:33:12,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 12:33:12,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:12,918 INFO L225 Difference]: With dead ends: 154 [2018-01-24 12:33:12,918 INFO L226 Difference]: Without dead ends: 151 [2018-01-24 12:33:12,919 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:33:12,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-01-24 12:33:12,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-01-24 12:33:12,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-24 12:33:12,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 156 transitions. [2018-01-24 12:33:12,927 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 156 transitions. Word has length 8 [2018-01-24 12:33:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:12,928 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 156 transitions. [2018-01-24 12:33:12,928 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 12:33:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 156 transitions. [2018-01-24 12:33:12,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 12:33:12,928 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:12,928 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:12,928 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:12,929 INFO L82 PathProgramCache]: Analyzing trace with hash 3311897, now seen corresponding path program 1 times [2018-01-24 12:33:12,929 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:12,929 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:12,930 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:12,930 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:12,930 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:12,951 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:12,985 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:12,985 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 12:33:12,986 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 12:33:12,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 12:33:12,986 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:33:12,986 INFO L87 Difference]: Start difference. First operand 151 states and 156 transitions. Second operand 4 states. [2018-01-24 12:33:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:13,096 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2018-01-24 12:33:13,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:33:13,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 12:33:13,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:13,098 INFO L225 Difference]: With dead ends: 170 [2018-01-24 12:33:13,098 INFO L226 Difference]: Without dead ends: 162 [2018-01-24 12:33:13,098 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:33:13,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-24 12:33:13,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 147. [2018-01-24 12:33:13,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-24 12:33:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 154 transitions. [2018-01-24 12:33:13,110 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 154 transitions. Word has length 13 [2018-01-24 12:33:13,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:13,111 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 154 transitions. [2018-01-24 12:33:13,111 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 12:33:13,111 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 154 transitions. [2018-01-24 12:33:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-24 12:33:13,111 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:13,111 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:13,112 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:13,112 INFO L82 PathProgramCache]: Analyzing trace with hash 3311898, now seen corresponding path program 1 times [2018-01-24 12:33:13,112 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:13,112 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:13,114 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:13,114 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:13,114 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:13,132 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:13,195 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:13,196 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 12:33:13,196 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 12:33:13,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 12:33:13,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:33:13,197 INFO L87 Difference]: Start difference. First operand 147 states and 154 transitions. Second operand 4 states. [2018-01-24 12:33:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:13,364 INFO L93 Difference]: Finished difference Result 167 states and 173 transitions. [2018-01-24 12:33:13,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 12:33:13,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-01-24 12:33:13,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:13,366 INFO L225 Difference]: With dead ends: 167 [2018-01-24 12:33:13,366 INFO L226 Difference]: Without dead ends: 159 [2018-01-24 12:33:13,367 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:33:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-24 12:33:13,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2018-01-24 12:33:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-24 12:33:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 158 transitions. [2018-01-24 12:33:13,379 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 158 transitions. Word has length 13 [2018-01-24 12:33:13,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:13,379 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 158 transitions. [2018-01-24 12:33:13,379 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 12:33:13,379 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 158 transitions. [2018-01-24 12:33:13,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 12:33:13,380 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:13,380 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:13,381 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:13,381 INFO L82 PathProgramCache]: Analyzing trace with hash -969711578, now seen corresponding path program 1 times [2018-01-24 12:33:13,381 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:13,381 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:13,383 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:13,383 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:13,383 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:13,411 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:13,508 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:13,508 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 12:33:13,508 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 12:33:13,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 12:33:13,509 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:33:13,509 INFO L87 Difference]: Start difference. First operand 151 states and 158 transitions. Second operand 4 states. [2018-01-24 12:33:13,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:13,655 INFO L93 Difference]: Finished difference Result 170 states and 178 transitions. [2018-01-24 12:33:13,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:33:13,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-24 12:33:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:13,657 INFO L225 Difference]: With dead ends: 170 [2018-01-24 12:33:13,657 INFO L226 Difference]: Without dead ends: 154 [2018-01-24 12:33:13,657 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:33:13,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-24 12:33:13,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 139. [2018-01-24 12:33:13,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-24 12:33:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2018-01-24 12:33:13,666 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 21 [2018-01-24 12:33:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:13,667 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2018-01-24 12:33:13,667 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 12:33:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2018-01-24 12:33:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 12:33:13,667 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:13,668 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:13,668 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:13,668 INFO L82 PathProgramCache]: Analyzing trace with hash -969711577, now seen corresponding path program 1 times [2018-01-24 12:33:13,668 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:13,668 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:13,670 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:13,670 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:13,670 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:13,690 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:13,803 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:13,803 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 12:33:13,804 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 12:33:13,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 12:33:13,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 12:33:13,804 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 7 states. [2018-01-24 12:33:14,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:14,109 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2018-01-24 12:33:14,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:33:14,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-01-24 12:33:14,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:14,111 INFO L225 Difference]: With dead ends: 182 [2018-01-24 12:33:14,111 INFO L226 Difference]: Without dead ends: 175 [2018-01-24 12:33:14,111 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-24 12:33:14,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-01-24 12:33:14,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 150. [2018-01-24 12:33:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 12:33:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2018-01-24 12:33:14,119 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 21 [2018-01-24 12:33:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:14,119 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2018-01-24 12:33:14,120 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 12:33:14,120 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2018-01-24 12:33:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 12:33:14,121 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:14,121 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:14,121 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash 115077033, now seen corresponding path program 1 times [2018-01-24 12:33:14,121 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:14,121 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:14,123 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:14,123 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:14,123 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:14,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:14,140 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:14,176 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:14,176 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:33:14,177 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:33:14,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:33:14,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:33:14,177 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand 5 states. [2018-01-24 12:33:14,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:14,343 INFO L93 Difference]: Finished difference Result 198 states and 215 transitions. [2018-01-24 12:33:14,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:33:14,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 12:33:14,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:14,345 INFO L225 Difference]: With dead ends: 198 [2018-01-24 12:33:14,345 INFO L226 Difference]: Without dead ends: 197 [2018-01-24 12:33:14,346 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 12:33:14,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-01-24 12:33:14,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 149. [2018-01-24 12:33:14,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-24 12:33:14,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2018-01-24 12:33:14,353 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 23 [2018-01-24 12:33:14,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:14,353 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2018-01-24 12:33:14,353 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:33:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2018-01-24 12:33:14,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 12:33:14,354 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:14,354 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:14,354 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:14,355 INFO L82 PathProgramCache]: Analyzing trace with hash 115077034, now seen corresponding path program 1 times [2018-01-24 12:33:14,355 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:14,355 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:14,356 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:14,356 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:14,356 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:14,371 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:14,445 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:14,445 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:33:14,445 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:33:14,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:33:14,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:33:14,446 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 5 states. [2018-01-24 12:33:14,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:14,647 INFO L93 Difference]: Finished difference Result 220 states and 238 transitions. [2018-01-24 12:33:14,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:33:14,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 12:33:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:14,649 INFO L225 Difference]: With dead ends: 220 [2018-01-24 12:33:14,649 INFO L226 Difference]: Without dead ends: 219 [2018-01-24 12:33:14,649 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 12:33:14,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-24 12:33:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 148. [2018-01-24 12:33:14,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-01-24 12:33:14,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2018-01-24 12:33:14,655 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 23 [2018-01-24 12:33:14,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:14,655 INFO L432 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2018-01-24 12:33:14,655 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:33:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2018-01-24 12:33:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 12:33:14,656 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:14,656 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:14,656 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:14,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1386253035, now seen corresponding path program 1 times [2018-01-24 12:33:14,657 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:14,657 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:14,658 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:14,658 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:14,658 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:14,676 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:14,782 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:14,782 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 12:33:14,783 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 12:33:14,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 12:33:14,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 12:33:14,783 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand 9 states. [2018-01-24 12:33:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:15,341 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2018-01-24 12:33:15,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 12:33:15,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-01-24 12:33:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:15,342 INFO L225 Difference]: With dead ends: 162 [2018-01-24 12:33:15,342 INFO L226 Difference]: Without dead ends: 161 [2018-01-24 12:33:15,343 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-24 12:33:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-24 12:33:15,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 147. [2018-01-24 12:33:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-24 12:33:15,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2018-01-24 12:33:15,349 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 27 [2018-01-24 12:33:15,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:15,349 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2018-01-24 12:33:15,349 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 12:33:15,349 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2018-01-24 12:33:15,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 12:33:15,350 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:15,350 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:15,350 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:15,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1386253036, now seen corresponding path program 1 times [2018-01-24 12:33:15,351 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:15,351 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:15,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:15,352 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:15,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:15,370 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:15,861 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:15,861 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 12:33:15,862 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 12:33:15,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 12:33:15,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-24 12:33:15,862 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 10 states. [2018-01-24 12:33:16,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:16,557 INFO L93 Difference]: Finished difference Result 188 states and 199 transitions. [2018-01-24 12:33:16,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 12:33:16,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2018-01-24 12:33:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:16,558 INFO L225 Difference]: With dead ends: 188 [2018-01-24 12:33:16,558 INFO L226 Difference]: Without dead ends: 177 [2018-01-24 12:33:16,559 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-24 12:33:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-01-24 12:33:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 152. [2018-01-24 12:33:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-24 12:33:16,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2018-01-24 12:33:16,566 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 27 [2018-01-24 12:33:16,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:16,566 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2018-01-24 12:33:16,566 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 12:33:16,566 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2018-01-24 12:33:16,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 12:33:16,568 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:16,568 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:16,568 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:16,568 INFO L82 PathProgramCache]: Analyzing trace with hash 78293977, now seen corresponding path program 1 times [2018-01-24 12:33:16,568 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:16,568 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:16,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:16,570 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:16,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:16,584 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:16,658 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:16,658 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 12:33:16,658 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 12:33:16,659 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 12:33:16,659 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-24 12:33:16,659 INFO L87 Difference]: Start difference. First operand 152 states and 162 transitions. Second operand 8 states. [2018-01-24 12:33:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:16,883 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2018-01-24 12:33:16,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 12:33:16,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-01-24 12:33:16,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:16,885 INFO L225 Difference]: With dead ends: 216 [2018-01-24 12:33:16,885 INFO L226 Difference]: Without dead ends: 180 [2018-01-24 12:33:16,885 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-01-24 12:33:16,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-01-24 12:33:16,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 152. [2018-01-24 12:33:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-24 12:33:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 161 transitions. [2018-01-24 12:33:16,894 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 161 transitions. Word has length 33 [2018-01-24 12:33:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:16,894 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 161 transitions. [2018-01-24 12:33:16,894 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 12:33:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 161 transitions. [2018-01-24 12:33:16,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 12:33:16,895 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:16,896 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:16,896 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:16,896 INFO L82 PathProgramCache]: Analyzing trace with hash -133974448, now seen corresponding path program 1 times [2018-01-24 12:33:16,896 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:16,896 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:16,897 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:16,897 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:16,897 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:16,912 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:16,960 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:16,960 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:33:16,961 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:33:16,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:33:16,961 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:33:16,961 INFO L87 Difference]: Start difference. First operand 152 states and 161 transitions. Second operand 5 states. [2018-01-24 12:33:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:17,295 INFO L93 Difference]: Finished difference Result 227 states and 242 transitions. [2018-01-24 12:33:17,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:33:17,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-24 12:33:17,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:17,296 INFO L225 Difference]: With dead ends: 227 [2018-01-24 12:33:17,296 INFO L226 Difference]: Without dead ends: 226 [2018-01-24 12:33:17,297 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 12:33:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-24 12:33:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 151. [2018-01-24 12:33:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-01-24 12:33:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 160 transitions. [2018-01-24 12:33:17,303 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 160 transitions. Word has length 34 [2018-01-24 12:33:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:17,303 INFO L432 AbstractCegarLoop]: Abstraction has 151 states and 160 transitions. [2018-01-24 12:33:17,303 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:33:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 160 transitions. [2018-01-24 12:33:17,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 12:33:17,304 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:17,304 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:17,304 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:17,305 INFO L82 PathProgramCache]: Analyzing trace with hash -133974447, now seen corresponding path program 1 times [2018-01-24 12:33:17,305 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:17,305 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:17,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:17,306 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:17,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:17,321 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:17,451 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:17,483 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:33:17,484 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:33:17,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:33:17,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:33:17,485 INFO L87 Difference]: Start difference. First operand 151 states and 160 transitions. Second operand 5 states. [2018-01-24 12:33:17,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:17,715 INFO L93 Difference]: Finished difference Result 249 states and 266 transitions. [2018-01-24 12:33:17,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:33:17,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-24 12:33:17,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:17,717 INFO L225 Difference]: With dead ends: 249 [2018-01-24 12:33:17,717 INFO L226 Difference]: Without dead ends: 248 [2018-01-24 12:33:17,718 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 12:33:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-24 12:33:17,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 150. [2018-01-24 12:33:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 12:33:17,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 159 transitions. [2018-01-24 12:33:17,725 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 159 transitions. Word has length 34 [2018-01-24 12:33:17,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:17,726 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 159 transitions. [2018-01-24 12:33:17,726 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:33:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 159 transitions. [2018-01-24 12:33:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-24 12:33:17,727 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:17,727 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] [2018-01-24 12:33:17,727 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:17,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1586747252, now seen corresponding path program 1 times [2018-01-24 12:33:17,728 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:17,728 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:17,729 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:17,729 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:17,729 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:17,742 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:17,863 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:33:17,863 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:33:17,869 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:17,913 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:33:17,985 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-01-24 12:33:17,985 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,003 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,003 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:17 [2018-01-24 12:33:18,033 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-01-24 12:33:18,034 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-01-24 12:33:18,035 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,036 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,045 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,045 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2018-01-24 12:33:18,070 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2018-01-24 12:33:18,073 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:33:18,076 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-01-24 12:33:18,077 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,084 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,094 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,094 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2018-01-24 12:33:18,117 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2018-01-24 12:33:18,125 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:33:18,126 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:33:18,127 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:33:18,129 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2018-01-24 12:33:18,130 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,138 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,145 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,146 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:52, output treesize:33 [2018-01-24 12:33:18,256 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2018-01-24 12:33:18,271 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2018-01-24 12:33:18,272 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,280 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:18,284 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-24 12:33:18,285 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:15 [2018-01-24 12:33:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:18,367 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:33:18,367 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12] total 17 [2018-01-24 12:33:18,367 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-24 12:33:18,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-24 12:33:18,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2018-01-24 12:33:18,368 INFO L87 Difference]: Start difference. First operand 150 states and 159 transitions. Second operand 17 states. [2018-01-24 12:33:19,496 WARN L146 SmtUtils]: Spent 162ms on a formula simplification. DAG size of input: 67 DAG size of output 55 [2018-01-24 12:33:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:20,062 INFO L93 Difference]: Finished difference Result 282 states and 301 transitions. [2018-01-24 12:33:20,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-24 12:33:20,062 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 36 [2018-01-24 12:33:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:20,063 INFO L225 Difference]: With dead ends: 282 [2018-01-24 12:33:20,063 INFO L226 Difference]: Without dead ends: 225 [2018-01-24 12:33:20,064 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=353, Invalid=907, Unknown=0, NotChecked=0, Total=1260 [2018-01-24 12:33:20,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-01-24 12:33:20,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 169. [2018-01-24 12:33:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-01-24 12:33:20,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 180 transitions. [2018-01-24 12:33:20,073 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 180 transitions. Word has length 36 [2018-01-24 12:33:20,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:20,074 INFO L432 AbstractCegarLoop]: Abstraction has 169 states and 180 transitions. [2018-01-24 12:33:20,074 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-24 12:33:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 180 transitions. [2018-01-24 12:33:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-24 12:33:20,075 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:20,075 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:20,075 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:20,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1203027346, now seen corresponding path program 1 times [2018-01-24 12:33:20,076 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:20,076 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:20,077 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:20,078 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:20,078 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:20,102 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:20,416 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:20,416 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-24 12:33:20,416 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 12:33:20,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 12:33:20,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2018-01-24 12:33:20,417 INFO L87 Difference]: Start difference. First operand 169 states and 180 transitions. Second operand 12 states. [2018-01-24 12:33:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:20,771 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2018-01-24 12:33:20,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-24 12:33:20,771 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2018-01-24 12:33:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:20,772 INFO L225 Difference]: With dead ends: 172 [2018-01-24 12:33:20,772 INFO L226 Difference]: Without dead ends: 171 [2018-01-24 12:33:20,773 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2018-01-24 12:33:20,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-01-24 12:33:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2018-01-24 12:33:20,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-01-24 12:33:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 179 transitions. [2018-01-24 12:33:20,783 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 179 transitions. Word has length 38 [2018-01-24 12:33:20,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:20,783 INFO L432 AbstractCegarLoop]: Abstraction has 168 states and 179 transitions. [2018-01-24 12:33:20,783 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 12:33:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 179 transitions. [2018-01-24 12:33:20,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-24 12:33:20,784 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:20,784 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:20,785 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:20,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1203027347, now seen corresponding path program 1 times [2018-01-24 12:33:20,785 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:20,785 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:20,786 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:20,786 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:20,786 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:20,809 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:20,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:20,989 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:20,990 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-24 12:33:20,990 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-24 12:33:20,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-24 12:33:20,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-01-24 12:33:20,991 INFO L87 Difference]: Start difference. First operand 168 states and 179 transitions. Second operand 13 states. [2018-01-24 12:33:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:21,632 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2018-01-24 12:33:21,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-24 12:33:21,632 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2018-01-24 12:33:21,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:21,633 INFO L225 Difference]: With dead ends: 173 [2018-01-24 12:33:21,633 INFO L226 Difference]: Without dead ends: 166 [2018-01-24 12:33:21,634 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2018-01-24 12:33:21,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-24 12:33:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 141. [2018-01-24 12:33:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-01-24 12:33:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 151 transitions. [2018-01-24 12:33:21,643 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 151 transitions. Word has length 38 [2018-01-24 12:33:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:21,643 INFO L432 AbstractCegarLoop]: Abstraction has 141 states and 151 transitions. [2018-01-24 12:33:21,644 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-24 12:33:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 151 transitions. [2018-01-24 12:33:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-24 12:33:21,644 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:21,645 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:21,645 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:21,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1775732296, now seen corresponding path program 1 times [2018-01-24 12:33:21,645 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:21,645 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:21,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:21,647 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:21,647 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:21,659 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:21,772 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:33:21,772 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 12:33:21,772 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:33:21,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:33:21,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:33:21,773 INFO L87 Difference]: Start difference. First operand 141 states and 151 transitions. Second operand 5 states. [2018-01-24 12:33:21,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:21,863 INFO L93 Difference]: Finished difference Result 203 states and 218 transitions. [2018-01-24 12:33:21,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:33:21,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-01-24 12:33:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:21,864 INFO L225 Difference]: With dead ends: 203 [2018-01-24 12:33:21,864 INFO L226 Difference]: Without dead ends: 145 [2018-01-24 12:33:21,864 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:33:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-24 12:33:21,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 140. [2018-01-24 12:33:21,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-24 12:33:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2018-01-24 12:33:21,870 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 38 [2018-01-24 12:33:21,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:21,871 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2018-01-24 12:33:21,871 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:33:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2018-01-24 12:33:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-24 12:33:21,871 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:21,872 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:21,872 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:21,872 INFO L82 PathProgramCache]: Analyzing trace with hash 377492563, now seen corresponding path program 1 times [2018-01-24 12:33:21,872 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:21,872 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:21,873 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:21,873 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:21,873 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:21,884 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:21,999 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:33:21,999 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:33:22,011 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:22,040 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:33:22,056 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:33:22,057 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:33:22,057 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-01-24 12:33:22,058 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:33:22,059 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:22,059 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2018-01-24 12:33:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 12:33:22,125 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-24 12:33:22,125 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2018-01-24 12:33:22,126 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 12:33:22,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 12:33:22,126 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-01-24 12:33:22,126 INFO L87 Difference]: Start difference. First operand 140 states and 148 transitions. Second operand 11 states. [2018-01-24 12:33:22,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:22,574 INFO L93 Difference]: Finished difference Result 177 states and 185 transitions. [2018-01-24 12:33:22,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 12:33:22,574 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2018-01-24 12:33:22,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:22,575 INFO L225 Difference]: With dead ends: 177 [2018-01-24 12:33:22,575 INFO L226 Difference]: Without dead ends: 174 [2018-01-24 12:33:22,576 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2018-01-24 12:33:22,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-24 12:33:22,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2018-01-24 12:33:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-24 12:33:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 147 transitions. [2018-01-24 12:33:22,581 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 147 transitions. Word has length 39 [2018-01-24 12:33:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:22,581 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 147 transitions. [2018-01-24 12:33:22,581 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 12:33:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 147 transitions. [2018-01-24 12:33:22,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-24 12:33:22,581 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:22,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:22,582 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:22,582 INFO L82 PathProgramCache]: Analyzing trace with hash 595067423, now seen corresponding path program 1 times [2018-01-24 12:33:22,582 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:22,582 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:22,583 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:22,583 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:22,583 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:22,590 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:22,729 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:33:22,729 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:33:22,735 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:22,758 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:33:22,763 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-01-24 12:33:22,765 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-01-24 12:33:22,765 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:33:22,767 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:22,768 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:22,769 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2018-01-24 12:33:22,776 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-01-24 12:33:22,778 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-01-24 12:33:22,779 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:33:22,779 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:22,780 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:22,780 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2018-01-24 12:33:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 12:33:22,808 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-24 12:33:22,809 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2018-01-24 12:33:22,809 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 12:33:22,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 12:33:22,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-01-24 12:33:22,809 INFO L87 Difference]: Start difference. First operand 140 states and 147 transitions. Second operand 9 states. [2018-01-24 12:33:23,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:23,036 INFO L93 Difference]: Finished difference Result 193 states and 203 transitions. [2018-01-24 12:33:23,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 12:33:23,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2018-01-24 12:33:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:23,037 INFO L225 Difference]: With dead ends: 193 [2018-01-24 12:33:23,037 INFO L226 Difference]: Without dead ends: 164 [2018-01-24 12:33:23,038 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-01-24 12:33:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-01-24 12:33:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 137. [2018-01-24 12:33:23,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-01-24 12:33:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 143 transitions. [2018-01-24 12:33:23,046 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 143 transitions. Word has length 43 [2018-01-24 12:33:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:23,046 INFO L432 AbstractCegarLoop]: Abstraction has 137 states and 143 transitions. [2018-01-24 12:33:23,046 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 12:33:23,047 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 143 transitions. [2018-01-24 12:33:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-24 12:33:23,047 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:23,047 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:23,048 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:23,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1932461330, now seen corresponding path program 1 times [2018-01-24 12:33:23,048 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:23,048 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:23,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:23,049 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:23,050 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:23,060 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:33:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:23,215 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:33:23,216 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:33:23,223 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:33:23,256 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:33:23,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 16 [2018-01-24 12:33:23,297 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2018-01-24 12:33:23,297 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:33:23,298 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:23,302 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:23,303 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:3 [2018-01-24 12:33:23,421 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-01-24 12:33:23,424 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-01-24 12:33:23,424 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:33:23,426 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:23,433 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-01-24 12:33:23,435 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-01-24 12:33:23,435 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 12:33:23,436 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:23,439 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:33:23,439 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:32, output treesize:10 [2018-01-24 12:33:23,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:33:23,502 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:33:23,502 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 16 [2018-01-24 12:33:23,502 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-24 12:33:23,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-24 12:33:23,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-01-24 12:33:23,503 INFO L87 Difference]: Start difference. First operand 137 states and 143 transitions. Second operand 16 states. [2018-01-24 12:33:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:33:24,051 INFO L93 Difference]: Finished difference Result 208 states and 219 transitions. [2018-01-24 12:33:24,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 12:33:24,052 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2018-01-24 12:33:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:33:24,053 INFO L225 Difference]: With dead ends: 208 [2018-01-24 12:33:24,053 INFO L226 Difference]: Without dead ends: 182 [2018-01-24 12:33:24,053 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-01-24 12:33:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-01-24 12:33:24,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 150. [2018-01-24 12:33:24,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 12:33:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 157 transitions. [2018-01-24 12:33:24,058 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 157 transitions. Word has length 46 [2018-01-24 12:33:24,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:33:24,059 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 157 transitions. [2018-01-24 12:33:24,059 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-24 12:33:24,059 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 157 transitions. [2018-01-24 12:33:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-01-24 12:33:24,059 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:33:24,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:33:24,059 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr51RequiresViolation, mainErr66EnsuresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 12:33:24,059 INFO L82 PathProgramCache]: Analyzing trace with hash -223241516, now seen corresponding path program 1 times [2018-01-24 12:33:24,060 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:33:24,060 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:33:24,060 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:24,061 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:33:24,061 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:33:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 12:33:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 12:33:24,115 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 12:33:24,141 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 12:33:24,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 12:33:24 BoogieIcfgContainer [2018-01-24 12:33:24,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 12:33:24,165 INFO L168 Benchmark]: Toolchain (without parser) took 13158.87 ms. Allocated memory was 304.1 MB in the beginning and 588.8 MB in the end (delta: 284.7 MB). Free memory was 264.1 MB in the beginning and 327.4 MB in the end (delta: -63.3 MB). Peak memory consumption was 221.4 MB. Max. memory is 5.3 GB. [2018-01-24 12:33:24,167 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 304.1 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 12:33:24,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.69 ms. Allocated memory is still 304.1 MB. Free memory was 263.1 MB in the beginning and 250.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 5.3 GB. [2018-01-24 12:33:24,167 INFO L168 Benchmark]: Boogie Preprocessor took 41.29 ms. Allocated memory is still 304.1 MB. Free memory was 250.8 MB in the beginning and 248.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 12:33:24,168 INFO L168 Benchmark]: RCFGBuilder took 644.18 ms. Allocated memory is still 304.1 MB. Free memory was 248.8 MB in the beginning and 208.8 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 5.3 GB. [2018-01-24 12:33:24,168 INFO L168 Benchmark]: TraceAbstraction took 12239.50 ms. Allocated memory was 304.1 MB in the beginning and 588.8 MB in the end (delta: 284.7 MB). Free memory was 208.8 MB in the beginning and 327.4 MB in the end (delta: -118.7 MB). Peak memory consumption was 166.0 MB. Max. memory is 5.3 GB. [2018-01-24 12:33:24,170 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 304.1 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 224.69 ms. Allocated memory is still 304.1 MB. Free memory was 263.1 MB in the beginning and 250.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 41.29 ms. Allocated memory is still 304.1 MB. Free memory was 250.8 MB in the beginning and 248.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 644.18 ms. Allocated memory is still 304.1 MB. Free memory was 248.8 MB in the beginning and 208.8 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 12239.50 ms. Allocated memory was 304.1 MB in the beginning and 588.8 MB in the end (delta: 284.7 MB). Free memory was 208.8 MB in the beginning and 327.4 MB in the end (delta: -118.7 MB). Peak memory consumption was 166.0 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: - UnprovableResult [Line: 985]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 985. Possible FailurePath: [L987] EXPR, FCALL malloc(sizeof(struct TSLL)) VAL [malloc(sizeof(struct TSLL))={19:0}] [L987] struct TSLL* null = malloc(sizeof(struct TSLL)); VAL [malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L988] FCALL null->next = ((void*)0) VAL [malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L989] FCALL null->prev = ((void*)0) VAL [malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L990] FCALL null->colour = BLACK VAL [malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L992] EXPR, FCALL malloc(sizeof(struct TSLL)) VAL [malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L992] struct TSLL* list = malloc(sizeof(struct TSLL)); VAL [list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L993] FCALL list->next = null VAL [list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L994] FCALL list->prev = null VAL [list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L995] FCALL list->colour = BLACK VAL [list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L997] struct TSLL* end = list; VAL [end={17:0}, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list VAL [end={17:0}, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1030] COND FALSE !(!(null != end)) VAL [end={17:0}, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1030] COND FALSE !(0) VAL [end={17:0}, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1031] EXPR, FCALL end->colour VAL [end={17:0}, end->colour=1, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1031] COND FALSE !(!(BLACK == end->colour)) [L1031] COND FALSE !(0) VAL [end={17:0}, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1032] COND TRUE null != end VAL [end={17:0}, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1034] EXPR, FCALL end->colour VAL [end={17:0}, end->colour=1, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1034] COND FALSE !(RED == end->colour) [L1041] EXPR, FCALL end->next VAL [end={17:0}, end->next={19:0}, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1041] end = end->next [L1032] COND FALSE !(null != end) VAL [end={19:0}, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1045] COND TRUE null != list VAL [end={19:0}, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1047] EXPR, FCALL list->colour VAL [end={19:0}, list={17:0}, list->colour=1, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1047] COND FALSE !(RED == list->colour) [L1056] EXPR, FCALL list->next VAL [end={19:0}, list={17:0}, list->next={19:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1056] end = list->next [L1057] FCALL free(list) VAL [end={19:0}, list={17:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1058] list = end VAL [end={19:0}, list={19:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1045] COND FALSE !(null != list) VAL [end={19:0}, list={19:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] [L1062] return 0; VAL [\result=0, end={19:0}, list={19:0}, malloc(sizeof(struct TSLL))={17:0}, malloc(sizeof(struct TSLL))={19:0}, null={19:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 160 locations, 67 error locations. UNSAFE Result, 12.1s OverallTime, 21 OverallIterations, 2 TraceHistogramMax, 7.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1870 SDtfs, 5731 SDslu, 4265 SDs, 0 SdLazy, 5772 SolverSat, 445 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 418 GetRequests, 179 SyntacticMatches, 17 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=14, 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: 0.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 627 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 774 NumberOfCodeBlocks, 774 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 703 ConstructedInterpolants, 4 QuantifiedInterpolants, 137821 SizeOfPredicates, 30 NumberOfNonLiveVariables, 655 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 24 InterpolantComputations, 18 PerfectInterpolantSequences, 7/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_12-33-24-177.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-rb-sentinel_false-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_12-33-24-177.csv Received shutdown request...