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/sll-01_false-unreach-call_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 12:42:14,742 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 12:42:14,743 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 12:42:14,755 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 12:42:14,756 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 12:42:14,757 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 12:42:14,758 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 12:42:14,759 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 12:42:14,762 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 12:42:14,762 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 12:42:14,763 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 12:42:14,764 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 12:42:14,765 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 12:42:14,766 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 12:42:14,767 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 12:42:14,769 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 12:42:14,772 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 12:42:14,774 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 12:42:14,775 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 12:42:14,776 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 12:42:14,778 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 12:42:14,779 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 12:42:14,779 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 12:42:14,780 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 12:42:14,781 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 12:42:14,782 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 12:42:14,782 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 12:42:14,783 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 12:42:14,783 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 12:42:14,783 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 12:42:14,784 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 12:42:14,784 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf [2018-01-24 12:42:14,794 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 12:42:14,795 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 12:42:14,795 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 12:42:14,796 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 12:42:14,796 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 12:42:14,796 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 12:42:14,796 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 12:42:14,797 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 12:42:14,797 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 12:42:14,797 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 12:42:14,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 12:42:14,798 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 12:42:14,798 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 12:42:14,798 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 12:42:14,798 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 12:42:14,798 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 12:42:14,799 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 12:42:14,799 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 12:42:14,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 12:42:14,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 12:42:14,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 12:42:14,800 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 12:42:14,800 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 12:42:14,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 12:42:14,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 12:42:14,800 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 12:42:14,801 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 12:42:14,801 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 12:42:14,801 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 12:42:14,801 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 12:42:14,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 12:42:14,802 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 12:42:14,802 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 12:42:14,803 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 12:42:14,838 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 12:42:14,850 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 12:42:14,854 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 12:42:14,856 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 12:42:14,856 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 12:42:14,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01_false-unreach-call_false-valid-deref.i [2018-01-24 12:42:15,031 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 12:42:15,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 12:42:15,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 12:42:15,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 12:42:15,040 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 12:42:15,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:42:15" (1/1) ... [2018-01-24 12:42:15,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@153f7457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:15, skipping insertion in model container [2018-01-24 12:42:15,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:42:15" (1/1) ... [2018-01-24 12:42:15,059 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:42:15,101 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:42:15,227 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:42:15,257 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:42:15,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:15 WrapperNode [2018-01-24 12:42:15,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 12:42:15,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 12:42:15,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 12:42:15,270 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 12:42:15,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:15" (1/1) ... [2018-01-24 12:42:15,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:15" (1/1) ... [2018-01-24 12:42:15,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:15" (1/1) ... [2018-01-24 12:42:15,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:15" (1/1) ... [2018-01-24 12:42:15,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:15" (1/1) ... [2018-01-24 12:42:15,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:15" (1/1) ... [2018-01-24 12:42:15,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:15" (1/1) ... [2018-01-24 12:42:15,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 12:42:15,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 12:42:15,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 12:42:15,316 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 12:42:15,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:15" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 12:42:15,374 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 12:42:15,375 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 12:42:15,375 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 12:42:15,375 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 12:42:15,375 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 12:42:15,375 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 12:42:15,375 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 12:42:15,376 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 12:42:15,376 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 12:42:15,376 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 12:42:15,376 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 12:42:15,376 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 12:42:15,376 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 12:42:15,377 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 12:42:15,377 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 12:42:15,950 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 12:42:15,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:42:15 BoogieIcfgContainer [2018-01-24 12:42:15,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 12:42:15,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 12:42:15,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 12:42:15,979 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 12:42:15,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 12:42:15" (1/3) ... [2018-01-24 12:42:15,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c04e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:42:15, skipping insertion in model container [2018-01-24 12:42:15,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:42:15" (2/3) ... [2018-01-24 12:42:15,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c04e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:42:15, skipping insertion in model container [2018-01-24 12:42:15,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:42:15" (3/3) ... [2018-01-24 12:42:15,983 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-01_false-unreach-call_false-valid-deref.i [2018-01-24 12:42:15,990 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 12:42:15,996 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 65 error locations. [2018-01-24 12:42:16,049 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 12:42:16,050 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 12:42:16,050 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 12:42:16,050 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 12:42:16,050 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 12:42:16,050 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 12:42:16,051 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 12:42:16,051 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 12:42:16,052 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 12:42:16,076 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states. [2018-01-24 12:42:16,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 12:42:16,082 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:16,083 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:16,084 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:16,088 INFO L82 PathProgramCache]: Analyzing trace with hash 2039196070, now seen corresponding path program 1 times [2018-01-24 12:42:16,089 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:16,090 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:16,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:16,130 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:16,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:16,171 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:16,242 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:16,242 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 12:42:16,244 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 12:42:16,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 12:42:16,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:42:16,257 INFO L87 Difference]: Start difference. First operand 188 states. Second operand 4 states. [2018-01-24 12:42:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:16,652 INFO L93 Difference]: Finished difference Result 394 states and 523 transitions. [2018-01-24 12:42:16,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:42:16,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 12:42:16,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:16,667 INFO L225 Difference]: With dead ends: 394 [2018-01-24 12:42:16,667 INFO L226 Difference]: Without dead ends: 211 [2018-01-24 12:42:16,672 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 12:42:16,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-01-24 12:42:16,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 181. [2018-01-24 12:42:16,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-24 12:42:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 194 transitions. [2018-01-24 12:42:16,723 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 194 transitions. Word has length 8 [2018-01-24 12:42:16,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:16,724 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 194 transitions. [2018-01-24 12:42:16,724 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 12:42:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 194 transitions. [2018-01-24 12:42:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 12:42:16,725 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:16,725 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:16,725 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:16,725 INFO L82 PathProgramCache]: Analyzing trace with hash 2039196071, now seen corresponding path program 1 times [2018-01-24 12:42:16,725 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:16,726 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:16,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:16,727 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:16,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:16,747 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:16,857 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:16,857 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 12:42:16,858 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 12:42:16,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 12:42:16,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:42:16,859 INFO L87 Difference]: Start difference. First operand 181 states and 194 transitions. Second operand 4 states. [2018-01-24 12:42:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:17,025 INFO L93 Difference]: Finished difference Result 214 states and 227 transitions. [2018-01-24 12:42:17,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 12:42:17,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 12:42:17,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:17,028 INFO L225 Difference]: With dead ends: 214 [2018-01-24 12:42:17,028 INFO L226 Difference]: Without dead ends: 204 [2018-01-24 12:42:17,029 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 12:42:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-01-24 12:42:17,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 193. [2018-01-24 12:42:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-24 12:42:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2018-01-24 12:42:17,044 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 8 [2018-01-24 12:42:17,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:17,045 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 213 transitions. [2018-01-24 12:42:17,045 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 12:42:17,045 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 213 transitions. [2018-01-24 12:42:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 12:42:17,045 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:17,046 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:17,046 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:17,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1799051431, now seen corresponding path program 1 times [2018-01-24 12:42:17,046 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:17,046 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:17,047 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:17,048 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:17,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:17,065 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:17,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:17,124 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:17,125 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:42:17,125 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:42:17,125 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:42:17,125 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:42:17,125 INFO L87 Difference]: Start difference. First operand 193 states and 213 transitions. Second operand 5 states. [2018-01-24 12:42:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:17,502 INFO L93 Difference]: Finished difference Result 330 states and 359 transitions. [2018-01-24 12:42:17,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:42:17,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 12:42:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:17,505 INFO L225 Difference]: With dead ends: 330 [2018-01-24 12:42:17,505 INFO L226 Difference]: Without dead ends: 329 [2018-01-24 12:42:17,506 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 12:42:17,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-01-24 12:42:17,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 192. [2018-01-24 12:42:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-24 12:42:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 212 transitions. [2018-01-24 12:42:17,523 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 212 transitions. Word has length 17 [2018-01-24 12:42:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:17,523 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 212 transitions. [2018-01-24 12:42:17,523 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:42:17,523 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 212 transitions. [2018-01-24 12:42:17,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 12:42:17,524 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:17,524 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:17,525 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:17,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1799051430, now seen corresponding path program 1 times [2018-01-24 12:42:17,526 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:17,526 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:17,527 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:17,527 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:17,527 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:17,543 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:17,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:17,622 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:17,622 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:42:17,623 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:42:17,623 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:42:17,623 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:42:17,623 INFO L87 Difference]: Start difference. First operand 192 states and 212 transitions. Second operand 5 states. [2018-01-24 12:42:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:17,873 INFO L93 Difference]: Finished difference Result 359 states and 398 transitions. [2018-01-24 12:42:17,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:42:17,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-01-24 12:42:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:17,875 INFO L225 Difference]: With dead ends: 359 [2018-01-24 12:42:17,875 INFO L226 Difference]: Without dead ends: 358 [2018-01-24 12:42:17,876 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 12:42:17,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2018-01-24 12:42:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 191. [2018-01-24 12:42:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-24 12:42:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 211 transitions. [2018-01-24 12:42:17,889 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 211 transitions. Word has length 17 [2018-01-24 12:42:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:17,889 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 211 transitions. [2018-01-24 12:42:17,889 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:42:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 211 transitions. [2018-01-24 12:42:17,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 12:42:17,890 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:17,890 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] [2018-01-24 12:42:17,890 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:17,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1355722779, now seen corresponding path program 1 times [2018-01-24 12:42:17,890 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:17,890 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:17,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:17,891 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:17,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:17,911 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:18,019 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:18,020 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 12:42:18,020 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 12:42:18,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 12:42:18,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 12:42:18,021 INFO L87 Difference]: Start difference. First operand 191 states and 211 transitions. Second operand 8 states. [2018-01-24 12:42:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:18,625 INFO L93 Difference]: Finished difference Result 333 states and 360 transitions. [2018-01-24 12:42:18,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 12:42:18,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-24 12:42:18,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:18,628 INFO L225 Difference]: With dead ends: 333 [2018-01-24 12:42:18,628 INFO L226 Difference]: Without dead ends: 332 [2018-01-24 12:42:18,629 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-24 12:42:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-01-24 12:42:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 190. [2018-01-24 12:42:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-24 12:42:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 210 transitions. [2018-01-24 12:42:18,656 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 210 transitions. Word has length 20 [2018-01-24 12:42:18,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:18,657 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 210 transitions. [2018-01-24 12:42:18,657 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 12:42:18,657 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 210 transitions. [2018-01-24 12:42:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 12:42:18,658 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:18,658 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] [2018-01-24 12:42:18,658 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:18,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1355722780, now seen corresponding path program 1 times [2018-01-24 12:42:18,659 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:18,659 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:18,660 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:18,660 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:18,660 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:18,678 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:18,879 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:18,880 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 12:42:18,880 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 12:42:18,880 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 12:42:18,880 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 12:42:18,881 INFO L87 Difference]: Start difference. First operand 190 states and 210 transitions. Second operand 8 states. [2018-01-24 12:42:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:19,444 INFO L93 Difference]: Finished difference Result 335 states and 362 transitions. [2018-01-24 12:42:19,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 12:42:19,445 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-01-24 12:42:19,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:19,446 INFO L225 Difference]: With dead ends: 335 [2018-01-24 12:42:19,446 INFO L226 Difference]: Without dead ends: 334 [2018-01-24 12:42:19,447 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-24 12:42:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-01-24 12:42:19,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 189. [2018-01-24 12:42:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-24 12:42:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 209 transitions. [2018-01-24 12:42:19,454 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 209 transitions. Word has length 20 [2018-01-24 12:42:19,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:19,455 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 209 transitions. [2018-01-24 12:42:19,455 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 12:42:19,455 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 209 transitions. [2018-01-24 12:42:19,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 12:42:19,456 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:19,456 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] [2018-01-24 12:42:19,456 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:19,456 INFO L82 PathProgramCache]: Analyzing trace with hash -778525244, now seen corresponding path program 1 times [2018-01-24 12:42:19,456 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:19,456 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:19,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:19,457 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:19,458 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:19,467 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:19,505 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:19,505 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 12:42:19,506 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:42:19,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:42:19,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:42:19,506 INFO L87 Difference]: Start difference. First operand 189 states and 209 transitions. Second operand 5 states. [2018-01-24 12:42:19,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:19,617 INFO L93 Difference]: Finished difference Result 443 states and 488 transitions. [2018-01-24 12:42:19,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:42:19,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-24 12:42:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:19,619 INFO L225 Difference]: With dead ends: 443 [2018-01-24 12:42:19,619 INFO L226 Difference]: Without dead ends: 282 [2018-01-24 12:42:19,620 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 12:42:19,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2018-01-24 12:42:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 193. [2018-01-24 12:42:19,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-24 12:42:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2018-01-24 12:42:19,632 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 26 [2018-01-24 12:42:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:19,633 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 213 transitions. [2018-01-24 12:42:19,633 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:42:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 213 transitions. [2018-01-24 12:42:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 12:42:19,634 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:19,634 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] [2018-01-24 12:42:19,635 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:19,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1814157193, now seen corresponding path program 1 times [2018-01-24 12:42:19,635 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:19,635 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:19,636 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:19,636 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:19,636 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:19,648 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:19,742 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:19,742 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:42:19,742 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:42:19,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:42:19,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:42:19,743 INFO L87 Difference]: Start difference. First operand 193 states and 213 transitions. Second operand 5 states. [2018-01-24 12:42:19,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:19,861 INFO L93 Difference]: Finished difference Result 215 states and 230 transitions. [2018-01-24 12:42:19,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 12:42:19,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-24 12:42:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:19,862 INFO L225 Difference]: With dead ends: 215 [2018-01-24 12:42:19,862 INFO L226 Difference]: Without dead ends: 203 [2018-01-24 12:42:19,863 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 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 12:42:19,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-01-24 12:42:19,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 185. [2018-01-24 12:42:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-24 12:42:19,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 205 transitions. [2018-01-24 12:42:19,871 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 205 transitions. Word has length 28 [2018-01-24 12:42:19,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:19,872 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 205 transitions. [2018-01-24 12:42:19,872 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:42:19,872 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 205 transitions. [2018-01-24 12:42:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 12:42:19,873 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:19,873 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] [2018-01-24 12:42:19,873 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:19,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1814157194, now seen corresponding path program 1 times [2018-01-24 12:42:19,874 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:19,874 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:19,875 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:19,875 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:19,875 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:19,887 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:19,973 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:19,974 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 12:42:19,974 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 12:42:19,974 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 12:42:19,974 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-24 12:42:19,974 INFO L87 Difference]: Start difference. First operand 185 states and 205 transitions. Second operand 7 states. [2018-01-24 12:42:20,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:20,209 INFO L93 Difference]: Finished difference Result 246 states and 263 transitions. [2018-01-24 12:42:20,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:42:20,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-24 12:42:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:20,210 INFO L225 Difference]: With dead ends: 246 [2018-01-24 12:42:20,210 INFO L226 Difference]: Without dead ends: 242 [2018-01-24 12:42:20,211 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-24 12:42:20,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-24 12:42:20,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 215. [2018-01-24 12:42:20,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-01-24 12:42:20,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 246 transitions. [2018-01-24 12:42:20,222 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 246 transitions. Word has length 28 [2018-01-24 12:42:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:20,223 INFO L432 AbstractCegarLoop]: Abstraction has 215 states and 246 transitions. [2018-01-24 12:42:20,223 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 12:42:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 246 transitions. [2018-01-24 12:42:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 12:42:20,224 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:20,224 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] [2018-01-24 12:42:20,224 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:20,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1983523681, now seen corresponding path program 1 times [2018-01-24 12:42:20,225 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:20,225 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:20,225 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:20,226 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:20,226 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:20,238 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:20,319 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:20,319 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 12:42:20,319 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 12:42:20,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 12:42:20,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:42:20,320 INFO L87 Difference]: Start difference. First operand 215 states and 246 transitions. Second operand 6 states. [2018-01-24 12:42:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:20,622 INFO L93 Difference]: Finished difference Result 312 states and 360 transitions. [2018-01-24 12:42:20,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 12:42:20,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-24 12:42:20,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:20,623 INFO L225 Difference]: With dead ends: 312 [2018-01-24 12:42:20,623 INFO L226 Difference]: Without dead ends: 311 [2018-01-24 12:42:20,624 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-24 12:42:20,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-24 12:42:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 214. [2018-01-24 12:42:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-01-24 12:42:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 245 transitions. [2018-01-24 12:42:20,632 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 245 transitions. Word has length 31 [2018-01-24 12:42:20,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:20,632 INFO L432 AbstractCegarLoop]: Abstraction has 214 states and 245 transitions. [2018-01-24 12:42:20,632 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 12:42:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 245 transitions. [2018-01-24 12:42:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 12:42:20,633 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:20,633 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] [2018-01-24 12:42:20,633 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:20,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1983523682, now seen corresponding path program 1 times [2018-01-24 12:42:20,634 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:20,634 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:20,634 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:20,635 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:20,635 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:20,646 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:20,726 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:20,726 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 12:42:20,726 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 12:42:20,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 12:42:20,726 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:42:20,727 INFO L87 Difference]: Start difference. First operand 214 states and 245 transitions. Second operand 6 states. [2018-01-24 12:42:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:21,050 INFO L93 Difference]: Finished difference Result 342 states and 398 transitions. [2018-01-24 12:42:21,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 12:42:21,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-24 12:42:21,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:21,052 INFO L225 Difference]: With dead ends: 342 [2018-01-24 12:42:21,052 INFO L226 Difference]: Without dead ends: 333 [2018-01-24 12:42:21,052 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-01-24 12:42:21,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-01-24 12:42:21,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 199. [2018-01-24 12:42:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-24 12:42:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 229 transitions. [2018-01-24 12:42:21,062 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 229 transitions. Word has length 31 [2018-01-24 12:42:21,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:21,063 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 229 transitions. [2018-01-24 12:42:21,063 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 12:42:21,063 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 229 transitions. [2018-01-24 12:42:21,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-24 12:42:21,064 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:21,064 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] [2018-01-24 12:42:21,065 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:21,065 INFO L82 PathProgramCache]: Analyzing trace with hash -706076137, now seen corresponding path program 1 times [2018-01-24 12:42:21,065 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:21,065 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:21,066 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:21,066 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:21,066 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:21,076 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:21,113 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:21,113 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 12:42:21,113 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:42:21,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:42:21,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:42:21,114 INFO L87 Difference]: Start difference. First operand 199 states and 229 transitions. Second operand 5 states. [2018-01-24 12:42:21,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:21,271 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2018-01-24 12:42:21,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:42:21,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2018-01-24 12:42:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:21,273 INFO L225 Difference]: With dead ends: 279 [2018-01-24 12:42:21,273 INFO L226 Difference]: Without dead ends: 222 [2018-01-24 12:42:21,274 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 12:42:21,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-24 12:42:21,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 199. [2018-01-24 12:42:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-24 12:42:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 227 transitions. [2018-01-24 12:42:21,285 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 227 transitions. Word has length 36 [2018-01-24 12:42:21,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:21,285 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 227 transitions. [2018-01-24 12:42:21,285 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:42:21,286 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 227 transitions. [2018-01-24 12:42:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-24 12:42:21,287 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:21,287 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, 1, 1, 1, 1] [2018-01-24 12:42:21,287 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:21,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1650873960, now seen corresponding path program 1 times [2018-01-24 12:42:21,288 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:21,288 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:21,288 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:21,289 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:21,289 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:21,299 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:21,651 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:21,651 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 12:42:21,651 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 12:42:21,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 12:42:21,652 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-01-24 12:42:21,652 INFO L87 Difference]: Start difference. First operand 199 states and 227 transitions. Second operand 10 states. [2018-01-24 12:42:22,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:22,446 INFO L93 Difference]: Finished difference Result 441 states and 497 transitions. [2018-01-24 12:42:22,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-24 12:42:22,447 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-01-24 12:42:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:22,448 INFO L225 Difference]: With dead ends: 441 [2018-01-24 12:42:22,448 INFO L226 Difference]: Without dead ends: 322 [2018-01-24 12:42:22,449 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2018-01-24 12:42:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-01-24 12:42:22,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 240. [2018-01-24 12:42:22,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-01-24 12:42:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2018-01-24 12:42:22,468 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 42 [2018-01-24 12:42:22,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:22,468 INFO L432 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2018-01-24 12:42:22,468 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 12:42:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2018-01-24 12:42:22,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-24 12:42:22,469 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:22,469 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, 1, 1, 1, 1, 1] [2018-01-24 12:42:22,470 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:22,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1611877026, now seen corresponding path program 1 times [2018-01-24 12:42:22,470 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:22,470 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:22,471 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:22,471 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:22,471 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:22,482 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:22,560 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:22,560 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:42:22,560 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:42:22,561 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:42:22,561 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:42:22,561 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 5 states. [2018-01-24 12:42:22,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:22,877 INFO L93 Difference]: Finished difference Result 360 states and 411 transitions. [2018-01-24 12:42:22,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:42:22,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-01-24 12:42:22,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:22,879 INFO L225 Difference]: With dead ends: 360 [2018-01-24 12:42:22,880 INFO L226 Difference]: Without dead ends: 359 [2018-01-24 12:42:22,880 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 12:42:22,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-01-24 12:42:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 239. [2018-01-24 12:42:22,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-01-24 12:42:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 271 transitions. [2018-01-24 12:42:22,898 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 271 transitions. Word has length 43 [2018-01-24 12:42:22,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:22,898 INFO L432 AbstractCegarLoop]: Abstraction has 239 states and 271 transitions. [2018-01-24 12:42:22,898 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:42:22,898 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 271 transitions. [2018-01-24 12:42:22,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-24 12:42:22,899 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:22,899 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, 1, 1, 1, 1, 1] [2018-01-24 12:42:22,900 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:22,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1611877025, now seen corresponding path program 1 times [2018-01-24 12:42:22,900 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:22,900 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:22,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:22,901 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:22,901 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:22,913 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:22,998 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:22,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:42:22,999 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:42:22,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:42:22,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:42:22,999 INFO L87 Difference]: Start difference. First operand 239 states and 271 transitions. Second operand 5 states. [2018-01-24 12:42:23,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:23,249 INFO L93 Difference]: Finished difference Result 392 states and 450 transitions. [2018-01-24 12:42:23,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:42:23,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-01-24 12:42:23,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:23,251 INFO L225 Difference]: With dead ends: 392 [2018-01-24 12:42:23,251 INFO L226 Difference]: Without dead ends: 391 [2018-01-24 12:42:23,252 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 12:42:23,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-01-24 12:42:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 238. [2018-01-24 12:42:23,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2018-01-24 12:42:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 270 transitions. [2018-01-24 12:42:23,263 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 270 transitions. Word has length 43 [2018-01-24 12:42:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:23,263 INFO L432 AbstractCegarLoop]: Abstraction has 238 states and 270 transitions. [2018-01-24 12:42:23,263 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:42:23,263 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 270 transitions. [2018-01-24 12:42:23,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-24 12:42:23,264 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:23,264 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] [2018-01-24 12:42:23,264 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:23,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1934711090, now seen corresponding path program 1 times [2018-01-24 12:42:23,265 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:23,265 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:23,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:23,265 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:23,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:23,274 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:23,435 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 12:42:23,435 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:23,435 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:42:23,443 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:23,480 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:23,579 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 12:42:23,583 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 12:42:23,583 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,585 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,596 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 12:42:23,598 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 12:42:23,599 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,601 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,607 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,608 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2018-01-24 12:42:23,667 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 12:42:23,670 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:42:23,672 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 12:42:23,673 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,680 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,720 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 12:42:23,730 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:42:23,731 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 12:42:23,731 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,746 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,764 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,764 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:47, output treesize:39 [2018-01-24 12:42:23,855 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 24 treesize of output 18 [2018-01-24 12:42:23,859 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:42:23,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-01-24 12:42:23,861 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,876 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,887 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 24 treesize of output 18 [2018-01-24 12:42:23,892 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:42:23,892 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-01-24 12:42:23,893 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,896 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,903 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:42:23,903 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:53, output treesize:7 [2018-01-24 12:42:23,925 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 12:42:23,945 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:23,945 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2018-01-24 12:42:23,946 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 12:42:23,946 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 12:42:23,946 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-01-24 12:42:23,946 INFO L87 Difference]: Start difference. First operand 238 states and 270 transitions. Second operand 11 states. [2018-01-24 12:42:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:24,760 INFO L93 Difference]: Finished difference Result 479 states and 527 transitions. [2018-01-24 12:42:24,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 12:42:24,760 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2018-01-24 12:42:24,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:24,762 INFO L225 Difference]: With dead ends: 479 [2018-01-24 12:42:24,762 INFO L226 Difference]: Without dead ends: 383 [2018-01-24 12:42:24,762 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2018-01-24 12:42:24,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-01-24 12:42:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 285. [2018-01-24 12:42:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-01-24 12:42:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 329 transitions. [2018-01-24 12:42:24,780 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 329 transitions. Word has length 44 [2018-01-24 12:42:24,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:24,780 INFO L432 AbstractCegarLoop]: Abstraction has 285 states and 329 transitions. [2018-01-24 12:42:24,780 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 12:42:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 329 transitions. [2018-01-24 12:42:24,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-24 12:42:24,781 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:24,781 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:24,781 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:24,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1693979189, now seen corresponding path program 1 times [2018-01-24 12:42:24,781 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:24,781 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:24,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:24,782 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:24,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:24,796 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:25,051 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:25,052 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 12:42:25,052 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 12:42:25,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 12:42:25,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 12:42:25,052 INFO L87 Difference]: Start difference. First operand 285 states and 329 transitions. Second operand 8 states. [2018-01-24 12:42:25,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:25,542 INFO L93 Difference]: Finished difference Result 303 states and 349 transitions. [2018-01-24 12:42:25,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 12:42:25,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-01-24 12:42:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:25,544 INFO L225 Difference]: With dead ends: 303 [2018-01-24 12:42:25,544 INFO L226 Difference]: Without dead ends: 302 [2018-01-24 12:42:25,545 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-24 12:42:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-01-24 12:42:25,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 284. [2018-01-24 12:42:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-01-24 12:42:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 328 transitions. [2018-01-24 12:42:25,567 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 328 transitions. Word has length 46 [2018-01-24 12:42:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:25,567 INFO L432 AbstractCegarLoop]: Abstraction has 284 states and 328 transitions. [2018-01-24 12:42:25,567 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 12:42:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 328 transitions. [2018-01-24 12:42:25,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-24 12:42:25,568 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:25,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:25,569 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:25,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1693979188, now seen corresponding path program 1 times [2018-01-24 12:42:25,569 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:25,569 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:25,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:25,570 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:25,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:25,585 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:25,757 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:25,757 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 12:42:25,757 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 12:42:25,758 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 12:42:25,758 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 12:42:25,758 INFO L87 Difference]: Start difference. First operand 284 states and 328 transitions. Second operand 8 states. [2018-01-24 12:42:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:26,126 INFO L93 Difference]: Finished difference Result 302 states and 348 transitions. [2018-01-24 12:42:26,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 12:42:26,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-01-24 12:42:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:26,128 INFO L225 Difference]: With dead ends: 302 [2018-01-24 12:42:26,128 INFO L226 Difference]: Without dead ends: 301 [2018-01-24 12:42:26,128 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-24 12:42:26,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-01-24 12:42:26,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 283. [2018-01-24 12:42:26,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-01-24 12:42:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 327 transitions. [2018-01-24 12:42:26,140 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 327 transitions. Word has length 46 [2018-01-24 12:42:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:26,140 INFO L432 AbstractCegarLoop]: Abstraction has 283 states and 327 transitions. [2018-01-24 12:42:26,140 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 12:42:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 327 transitions. [2018-01-24 12:42:26,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-01-24 12:42:26,141 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:26,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:26,141 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:26,141 INFO L82 PathProgramCache]: Analyzing trace with hash -944056626, now seen corresponding path program 1 times [2018-01-24 12:42:26,141 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:26,142 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:26,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:26,142 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:26,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:26,155 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:26,391 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:26,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-24 12:42:26,392 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 12:42:26,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 12:42:26,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-01-24 12:42:26,392 INFO L87 Difference]: Start difference. First operand 283 states and 327 transitions. Second operand 11 states. [2018-01-24 12:42:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:26,966 INFO L93 Difference]: Finished difference Result 546 states and 612 transitions. [2018-01-24 12:42:26,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-24 12:42:26,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2018-01-24 12:42:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:26,970 INFO L225 Difference]: With dead ends: 546 [2018-01-24 12:42:26,970 INFO L226 Difference]: Without dead ends: 543 [2018-01-24 12:42:26,970 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2018-01-24 12:42:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-01-24 12:42:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 289. [2018-01-24 12:42:26,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-01-24 12:42:26,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 332 transitions. [2018-01-24 12:42:26,994 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 332 transitions. Word has length 47 [2018-01-24 12:42:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:26,995 INFO L432 AbstractCegarLoop]: Abstraction has 289 states and 332 transitions. [2018-01-24 12:42:26,995 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 12:42:26,995 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 332 transitions. [2018-01-24 12:42:26,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-01-24 12:42:26,996 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:26,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:26,996 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:26,996 INFO L82 PathProgramCache]: Analyzing trace with hash -944056625, now seen corresponding path program 1 times [2018-01-24 12:42:26,996 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:26,996 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:26,997 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:26,997 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:26,997 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:27,012 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:42:27,285 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:27,285 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-24 12:42:27,285 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-24 12:42:27,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-24 12:42:27,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-01-24 12:42:27,286 INFO L87 Difference]: Start difference. First operand 289 states and 332 transitions. Second operand 13 states. [2018-01-24 12:42:28,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:28,033 INFO L93 Difference]: Finished difference Result 603 states and 659 transitions. [2018-01-24 12:42:28,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-24 12:42:28,033 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2018-01-24 12:42:28,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:28,035 INFO L225 Difference]: With dead ends: 603 [2018-01-24 12:42:28,035 INFO L226 Difference]: Without dead ends: 600 [2018-01-24 12:42:28,036 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2018-01-24 12:42:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2018-01-24 12:42:28,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 296. [2018-01-24 12:42:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2018-01-24 12:42:28,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 338 transitions. [2018-01-24 12:42:28,051 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 338 transitions. Word has length 47 [2018-01-24 12:42:28,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:28,052 INFO L432 AbstractCegarLoop]: Abstraction has 296 states and 338 transitions. [2018-01-24 12:42:28,052 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-24 12:42:28,052 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 338 transitions. [2018-01-24 12:42:28,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-01-24 12:42:28,052 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:28,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:28,053 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:28,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1546550031, now seen corresponding path program 1 times [2018-01-24 12:42:28,053 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:28,053 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:28,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:28,054 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:28,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:28,061 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:28,272 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 12:42:28,272 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:42:28,272 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 12:42:28,272 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 12:42:28,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 12:42:28,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-24 12:42:28,273 INFO L87 Difference]: Start difference. First operand 296 states and 338 transitions. Second operand 7 states. [2018-01-24 12:42:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:28,594 INFO L93 Difference]: Finished difference Result 363 states and 413 transitions. [2018-01-24 12:42:28,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 12:42:28,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2018-01-24 12:42:28,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:28,595 INFO L225 Difference]: With dead ends: 363 [2018-01-24 12:42:28,596 INFO L226 Difference]: Without dead ends: 312 [2018-01-24 12:42:28,596 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-01-24 12:42:28,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-01-24 12:42:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 308. [2018-01-24 12:42:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-01-24 12:42:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 350 transitions. [2018-01-24 12:42:28,618 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 350 transitions. Word has length 53 [2018-01-24 12:42:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:28,619 INFO L432 AbstractCegarLoop]: Abstraction has 308 states and 350 transitions. [2018-01-24 12:42:28,619 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 12:42:28,619 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 350 transitions. [2018-01-24 12:42:28,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-01-24 12:42:28,620 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:28,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:28,620 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:28,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1009176340, now seen corresponding path program 1 times [2018-01-24 12:42:28,621 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:28,621 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:28,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:28,622 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:28,622 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:28,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:28,713 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 12:42:28,713 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:28,713 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:42:28,719 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:28,739 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:28,756 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 12:42:28,758 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 12:42:28,758 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:42:28,760 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:42:28,764 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:42:28,764 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-01-24 12:42:28,992 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 12:42:29,000 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 8 [2018-01-24 12:42:29,001 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-01-24 12:42:29,006 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 12:42:29,021 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 24 treesize of output 18 [2018-01-24 12:42:29,025 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:42:29,027 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:42:29,036 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2018-01-24 12:42:29,037 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-01-24 12:42:29,049 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 12:42:29,060 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-01-24 12:42:29,060 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-01-24 12:42:29,143 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 12:42:29,178 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:29,178 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 17 [2018-01-24 12:42:29,179 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-24 12:42:29,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-24 12:42:29,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=227, Unknown=2, NotChecked=0, Total=272 [2018-01-24 12:42:29,179 INFO L87 Difference]: Start difference. First operand 308 states and 350 transitions. Second operand 17 states. [2018-01-24 12:42:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:30,333 INFO L93 Difference]: Finished difference Result 636 states and 683 transitions. [2018-01-24 12:42:30,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-24 12:42:30,334 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2018-01-24 12:42:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:30,337 INFO L225 Difference]: With dead ends: 636 [2018-01-24 12:42:30,337 INFO L226 Difference]: Without dead ends: 601 [2018-01-24 12:42:30,338 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=231, Invalid=1094, Unknown=7, NotChecked=0, Total=1332 [2018-01-24 12:42:30,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2018-01-24 12:42:30,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 336. [2018-01-24 12:42:30,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-01-24 12:42:30,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 385 transitions. [2018-01-24 12:42:30,367 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 385 transitions. Word has length 55 [2018-01-24 12:42:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:30,368 INFO L432 AbstractCegarLoop]: Abstraction has 336 states and 385 transitions. [2018-01-24 12:42:30,368 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-24 12:42:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 385 transitions. [2018-01-24 12:42:30,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-01-24 12:42:30,369 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:30,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:30,369 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:30,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1219696535, now seen corresponding path program 1 times [2018-01-24 12:42:30,370 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:30,370 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:30,371 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:30,371 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:30,371 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:30,382 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:42:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 12:42:30,484 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:42:30,484 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:42:30,494 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:42:30,523 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:42:30,652 WARN L1029 $PredicateComparison]: unable to prove that (exists ((main_~list~5.base Int)) (and (= 0 (select |c_old(#valid)| main_~list~5.base)) (= |c_#valid| (store |c_old(#valid)| main_~list~5.base 0)) (not (= 0 main_~list~5.base)))) is different from true [2018-01-24 12:42:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2018-01-24 12:42:30,702 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:42:30,702 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 9 [2018-01-24 12:42:30,702 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 12:42:30,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 12:42:30,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=55, Unknown=1, NotChecked=14, Total=90 [2018-01-24 12:42:30,703 INFO L87 Difference]: Start difference. First operand 336 states and 385 transitions. Second operand 10 states. [2018-01-24 12:42:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:42:30,994 INFO L93 Difference]: Finished difference Result 376 states and 425 transitions. [2018-01-24 12:42:30,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 12:42:30,995 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2018-01-24 12:42:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:42:30,996 INFO L225 Difference]: With dead ends: 376 [2018-01-24 12:42:30,996 INFO L226 Difference]: Without dead ends: 345 [2018-01-24 12:42:30,997 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=134, Unknown=1, NotChecked=24, Total=210 [2018-01-24 12:42:30,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-01-24 12:42:31,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 344. [2018-01-24 12:42:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344 states. [2018-01-24 12:42:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 393 transitions. [2018-01-24 12:42:31,013 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 393 transitions. Word has length 56 [2018-01-24 12:42:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:42:31,013 INFO L432 AbstractCegarLoop]: Abstraction has 344 states and 393 transitions. [2018-01-24 12:42:31,013 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 12:42:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 393 transitions. [2018-01-24 12:42:31,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-24 12:42:31,014 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:42:31,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:42:31,014 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr64EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, 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 12:42:31,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1674520475, now seen corresponding path program 1 times [2018-01-24 12:42:31,015 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:42:31,015 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:42:31,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:31,015 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:42:31,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:42:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 12:42:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 12:42:31,066 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 12:42:31,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 12:42:31 BoogieIcfgContainer [2018-01-24 12:42:31,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 12:42:31,132 INFO L168 Benchmark]: Toolchain (without parser) took 16100.54 ms. Allocated memory was 306.2 MB in the beginning and 626.5 MB in the end (delta: 320.3 MB). Free memory was 265.1 MB in the beginning and 351.6 MB in the end (delta: -86.5 MB). Peak memory consumption was 233.8 MB. Max. memory is 5.3 GB. [2018-01-24 12:42:31,134 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 306.2 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 12:42:31,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.63 ms. Allocated memory is still 306.2 MB. Free memory was 265.1 MB in the beginning and 251.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-01-24 12:42:31,134 INFO L168 Benchmark]: Boogie Preprocessor took 44.95 ms. Allocated memory is still 306.2 MB. Free memory was 251.1 MB in the beginning and 249.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 12:42:31,134 INFO L168 Benchmark]: RCFGBuilder took 661.02 ms. Allocated memory is still 306.2 MB. Free memory was 249.1 MB in the beginning and 206.2 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 5.3 GB. [2018-01-24 12:42:31,135 INFO L168 Benchmark]: TraceAbstraction took 15153.84 ms. Allocated memory was 306.2 MB in the beginning and 626.5 MB in the end (delta: 320.3 MB). Free memory was 206.2 MB in the beginning and 351.6 MB in the end (delta: -145.4 MB). Peak memory consumption was 174.9 MB. Max. memory is 5.3 GB. [2018-01-24 12:42:31,136 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 306.2 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 233.63 ms. Allocated memory is still 306.2 MB. Free memory was 265.1 MB in the beginning and 251.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 44.95 ms. Allocated memory is still 306.2 MB. Free memory was 251.1 MB in the beginning and 249.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 661.02 ms. Allocated memory is still 306.2 MB. Free memory was 249.1 MB in the beginning and 206.2 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 15153.84 ms. Allocated memory was 306.2 MB in the beginning and 626.5 MB in the end (delta: 320.3 MB). Free memory was 206.2 MB in the beginning and 351.6 MB in the end (delta: -145.4 MB). Peak memory consumption was 174.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L991] EXPR, FCALL malloc(sizeof(SLL)) VAL [malloc(sizeof(SLL))={11:0}] [L991] SLL* list = malloc(sizeof(SLL)); VAL [list={11:0}, malloc(sizeof(SLL))={11:0}] [L992] FCALL list->next = ((void*)0) VAL [list={11:0}, malloc(sizeof(SLL))={11:0}] [L993] COND FALSE !(!(list != ((void*)0))) VAL [list={11:0}, malloc(sizeof(SLL))={11:0}] [L993] COND FALSE !(0) VAL [list={11:0}, malloc(sizeof(SLL))={11:0}] [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] EXPR, FCALL malloc(sizeof(SLL)) VAL [list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L993] FCALL list->inner = malloc(sizeof(SLL)) VAL [list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L993] EXPR, FCALL list->inner VAL [list={11:0}, list->inner={9:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L993] FCALL list->inner->next = ((void*)0) VAL [list={11:0}, list->inner={9:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L993] EXPR, FCALL list->inner VAL [list={11:0}, list->inner={9:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L993] FCALL list->inner->inner = ((void*)0) VAL [list={11:0}, list->inner={9:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L993] EXPR, FCALL list->inner VAL [list={11:0}, list->inner={9:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={11:0}, list->inner={9:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L993] COND FALSE !(0) VAL [list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L995] SLL* end = list; VAL [end={11:0}, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list VAL [end={11:0}, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1012] COND FALSE !(!(((void*)0) != end)) VAL [end={11:0}, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1012] COND FALSE !(0) VAL [end={11:0}, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; VAL [end={11:0}, len=0, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1017] EXPR, FCALL end->inner VAL [end={11:0}, end->inner={9:0}, len=0, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner VAL [end={11:0}, inner={9:0}, len=0, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1020] COND TRUE len == 0 [L1021] len = 1 VAL [end={11:0}, inner={9:0}, len=1, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1024] COND FALSE !(!(((void*)0) != inner)) VAL [end={11:0}, inner={9:0}, len=1, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1024] COND FALSE !(0) VAL [end={11:0}, inner={9:0}, len=1, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1025] EXPR, FCALL inner->inner VAL [end={11:0}, inner={9:0}, inner->inner={0:0}, len=1, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1025] COND FALSE !(0) VAL [end={11:0}, inner={9:0}, len=1, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1026] EXPR, FCALL inner->next VAL [end={11:0}, inner={9:0}, inner->next={0:0}, len=1, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1026] COND FALSE !(0) VAL [end={11:0}, inner={9:0}, len=1, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1027] EXPR, FCALL inner->inner VAL [end={11:0}, inner={9:0}, inner->inner={0:0}, len=1, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1027] inner = inner->inner [L1028] COND TRUE len == 1 VAL [end={11:0}, inner={0:0}, len=1, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] [L1029] FCALL inner->inner VAL [end={11:0}, inner={0:0}, len=1, list={11:0}, malloc(sizeof(SLL))={11:0}, malloc(sizeof(SLL))={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 188 locations, 65 error locations. UNSAFE Result, 15.0s OverallTime, 24 OverallIterations, 2 TraceHistogramMax, 9.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3785 SDtfs, 8634 SDslu, 12327 SDs, 0 SdLazy, 8399 SolverSat, 487 SolverUnsat, 31 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 175 SyntacticMatches, 11 SemanticMatches, 258 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=23, 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: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 2337 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1004 NumberOfCodeBlocks, 1004 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 921 ConstructedInterpolants, 14 QuantifiedInterpolants, 377020 SizeOfPredicates, 24 NumberOfNonLiveVariables, 500 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 26 InterpolantComputations, 20 PerfectInterpolantSequences, 10/26 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-01_false-unreach-call_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_12-42-31-144.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-01_false-unreach-call_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_12-42-31-144.csv Received shutdown request...