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_SS.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-optional_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-28 22:50:35,723 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 22:50:35,725 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 22:50:35,740 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 22:50:35,740 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 22:50:35,741 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 22:50:35,742 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 22:50:35,744 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 22:50:35,745 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 22:50:35,746 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 22:50:35,747 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 22:50:35,747 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 22:50:35,748 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 22:50:35,749 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 22:50:35,750 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 22:50:35,753 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 22:50:35,755 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 22:50:35,757 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 22:50:35,758 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 22:50:35,759 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 22:50:35,761 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-28 22:50:35,762 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-28 22:50:35,762 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-28 22:50:35,763 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-28 22:50:35,763 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-28 22:50:35,765 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-28 22:50:35,765 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-28 22:50:35,766 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-28 22:50:35,766 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-28 22:50:35,766 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 22:50:35,767 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 22:50:35,767 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_SS.epf [2018-01-28 22:50:35,775 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 22:50:35,775 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 22:50:35,776 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 22:50:35,776 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 22:50:35,776 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 22:50:35,776 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 22:50:35,777 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 22:50:35,777 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 22:50:35,777 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 22:50:35,777 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 22:50:35,777 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 22:50:35,777 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 22:50:35,778 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 22:50:35,778 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 22:50:35,778 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 22:50:35,778 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 22:50:35,778 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 22:50:35,778 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 22:50:35,778 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 22:50:35,778 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 22:50:35,779 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 22:50:35,779 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 22:50:35,779 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 22:50:35,779 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 22:50:35,779 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 22:50:35,780 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 22:50:35,780 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 22:50:35,780 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 22:50:35,780 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 22:50:35,780 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 22:50:35,780 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 22:50:35,780 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 22:50:35,781 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 22:50:35,781 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 22:50:35,814 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 22:50:35,824 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 22:50:35,828 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 22:50:35,862 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 22:50:35,862 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 22:50:35,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-optional_true-unreach-call_true-valid-memsafety.i [2018-01-28 22:50:36,029 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 22:50:36,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-28 22:50:36,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 22:50:36,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 22:50:36,040 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 22:50:36,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:50:36" (1/1) ... [2018-01-28 22:50:36,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45875f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:50:36, skipping insertion in model container [2018-01-28 22:50:36,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:50:36" (1/1) ... [2018-01-28 22:50:36,061 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:50:36,103 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:50:36,211 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:50:36,231 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:50:36,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:50:36 WrapperNode [2018-01-28 22:50:36,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 22:50:36,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 22:50:36,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 22:50:36,243 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 22:50:36,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:50:36" (1/1) ... [2018-01-28 22:50:36,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:50:36" (1/1) ... [2018-01-28 22:50:36,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:50:36" (1/1) ... [2018-01-28 22:50:36,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:50:36" (1/1) ... [2018-01-28 22:50:36,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:50:36" (1/1) ... [2018-01-28 22:50:36,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:50:36" (1/1) ... [2018-01-28 22:50:36,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:50:36" (1/1) ... [2018-01-28 22:50:36,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 22:50:36,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 22:50:36,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 22:50:36,288 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 22:50:36,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:50:36" (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 [2018-01-28 22:50:36,346 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 22:50:36,346 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 22:50:36,346 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 22:50:36,346 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-28 22:50:36,346 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-28 22:50:36,346 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-28 22:50:36,347 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-28 22:50:36,347 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 22:50:36,347 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 22:50:36,347 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-28 22:50:36,347 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-28 22:50:36,347 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-28 22:50:36,347 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-28 22:50:36,347 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-28 22:50:36,347 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 22:50:36,347 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 22:50:36,348 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 22:50:36,894 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 22:50:36,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:50:36 BoogieIcfgContainer [2018-01-28 22:50:36,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 22:50:36,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 22:50:36,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 22:50:36,899 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 22:50:36,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:50:36" (1/3) ... [2018-01-28 22:50:36,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177e59b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:50:36, skipping insertion in model container [2018-01-28 22:50:36,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:50:36" (2/3) ... [2018-01-28 22:50:36,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177e59b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:50:36, skipping insertion in model container [2018-01-28 22:50:36,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:50:36" (3/3) ... [2018-01-28 22:50:36,903 INFO L107 eAbstractionObserver]: Analyzing ICFG dll-optional_true-unreach-call_true-valid-memsafety.i [2018-01-28 22:50:36,912 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 22:50:36,919 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 69 error locations. [2018-01-28 22:50:36,971 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 22:50:36,972 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 22:50:36,972 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 22:50:36,972 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 22:50:36,972 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 22:50:36,972 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 22:50:36,973 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 22:50:36,973 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 22:50:36,974 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 22:50:36,997 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2018-01-28 22:50:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-28 22:50:37,004 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:37,005 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:50:37,005 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:37,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1531089115, now seen corresponding path program 1 times [2018-01-28 22:50:37,013 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:37,013 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:37,073 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:37,073 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:37,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:37,129 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:37,198 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:37,198 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 22:50:37,200 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 22:50:37,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 22:50:37,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 22:50:37,307 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 4 states. [2018-01-28 22:50:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:37,560 INFO L93 Difference]: Finished difference Result 299 states and 332 transitions. [2018-01-28 22:50:37,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:50:37,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-01-28 22:50:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:37,576 INFO L225 Difference]: With dead ends: 299 [2018-01-28 22:50:37,576 INFO L226 Difference]: Without dead ends: 194 [2018-01-28 22:50:37,580 INFO L533 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 [2018-01-28 22:50:37,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-28 22:50:37,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 169. [2018-01-28 22:50:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-01-28 22:50:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 180 transitions. [2018-01-28 22:50:37,632 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 180 transitions. Word has length 9 [2018-01-28 22:50:37,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:37,632 INFO L432 AbstractCegarLoop]: Abstraction has 169 states and 180 transitions. [2018-01-28 22:50:37,632 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 22:50:37,632 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 180 transitions. [2018-01-28 22:50:37,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-28 22:50:37,633 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:37,633 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:50:37,633 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:37,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1531089114, now seen corresponding path program 1 times [2018-01-28 22:50:37,634 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:37,634 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:37,635 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:37,635 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:37,635 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:37,650 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:37,709 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:37,709 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 22:50:37,711 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 22:50:37,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 22:50:37,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 22:50:37,711 INFO L87 Difference]: Start difference. First operand 169 states and 180 transitions. Second operand 4 states. [2018-01-28 22:50:37,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:37,904 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2018-01-28 22:50:37,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-28 22:50:37,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-01-28 22:50:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:37,907 INFO L225 Difference]: With dead ends: 175 [2018-01-28 22:50:37,907 INFO L226 Difference]: Without dead ends: 166 [2018-01-28 22:50:37,908 INFO L533 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 [2018-01-28 22:50:37,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-01-28 22:50:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 160. [2018-01-28 22:50:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-01-28 22:50:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2018-01-28 22:50:37,923 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 9 [2018-01-28 22:50:37,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:37,923 INFO L432 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2018-01-28 22:50:37,923 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 22:50:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2018-01-28 22:50:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-28 22:50:37,924 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:37,924 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:50:37,924 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:37,925 INFO L82 PathProgramCache]: Analyzing trace with hash 297818218, now seen corresponding path program 1 times [2018-01-28 22:50:37,925 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:37,925 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:37,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:37,926 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:37,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:37,948 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:38,000 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:38,001 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:50:38,001 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:50:38,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:50:38,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:50:38,001 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 5 states. [2018-01-28 22:50:38,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:38,445 INFO L93 Difference]: Finished difference Result 346 states and 370 transitions. [2018-01-28 22:50:38,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-28 22:50:38,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-28 22:50:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:38,450 INFO L225 Difference]: With dead ends: 346 [2018-01-28 22:50:38,451 INFO L226 Difference]: Without dead ends: 345 [2018-01-28 22:50:38,451 INFO L533 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 [2018-01-28 22:50:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-01-28 22:50:38,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 159. [2018-01-28 22:50:38,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-01-28 22:50:38,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2018-01-28 22:50:38,469 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 18 [2018-01-28 22:50:38,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:38,470 INFO L432 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2018-01-28 22:50:38,470 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:50:38,470 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2018-01-28 22:50:38,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-28 22:50:38,471 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:38,471 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:50:38,471 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:38,472 INFO L82 PathProgramCache]: Analyzing trace with hash 297818219, now seen corresponding path program 1 times [2018-01-28 22:50:38,472 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:38,472 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:38,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:38,473 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:38,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:38,495 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:38,574 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:38,574 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:50:38,574 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:50:38,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:50:38,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:50:38,575 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 5 states. [2018-01-28 22:50:38,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:38,891 INFO L93 Difference]: Finished difference Result 289 states and 309 transitions. [2018-01-28 22:50:38,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:50:38,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-28 22:50:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:38,893 INFO L225 Difference]: With dead ends: 289 [2018-01-28 22:50:38,893 INFO L226 Difference]: Without dead ends: 288 [2018-01-28 22:50:38,893 INFO L533 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 [2018-01-28 22:50:38,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2018-01-28 22:50:38,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 158. [2018-01-28 22:50:38,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-28 22:50:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2018-01-28 22:50:38,904 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 18 [2018-01-28 22:50:38,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:38,904 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2018-01-28 22:50:38,904 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:50:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2018-01-28 22:50:38,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-28 22:50:38,905 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:38,905 INFO L330 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] [2018-01-28 22:50:38,905 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:38,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1619029890, now seen corresponding path program 1 times [2018-01-28 22:50:38,905 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:38,906 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:38,906 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:38,906 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:38,906 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:38,925 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:38,991 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:38,991 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 22:50:38,991 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 22:50:38,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 22:50:38,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 22:50:38,991 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 4 states. [2018-01-28 22:50:39,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:39,137 INFO L93 Difference]: Finished difference Result 180 states and 191 transitions. [2018-01-28 22:50:39,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:50:39,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-28 22:50:39,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:39,139 INFO L225 Difference]: With dead ends: 180 [2018-01-28 22:50:39,139 INFO L226 Difference]: Without dead ends: 163 [2018-01-28 22:50:39,139 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:50:39,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-01-28 22:50:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 155. [2018-01-28 22:50:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-28 22:50:39,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 171 transitions. [2018-01-28 22:50:39,150 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 171 transitions. Word has length 25 [2018-01-28 22:50:39,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:39,150 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 171 transitions. [2018-01-28 22:50:39,150 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 22:50:39,150 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 171 transitions. [2018-01-28 22:50:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-28 22:50:39,151 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:39,151 INFO L330 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] [2018-01-28 22:50:39,152 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:39,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1619029889, now seen corresponding path program 1 times [2018-01-28 22:50:39,152 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:39,152 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:39,153 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:39,153 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:39,153 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:39,169 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:39,260 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:39,261 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 22:50:39,261 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-28 22:50:39,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-28 22:50:39,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:50:39,262 INFO L87 Difference]: Start difference. First operand 155 states and 171 transitions. Second operand 7 states. [2018-01-28 22:50:39,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:39,479 INFO L93 Difference]: Finished difference Result 230 states and 248 transitions. [2018-01-28 22:50:39,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:50:39,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-01-28 22:50:39,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:39,481 INFO L225 Difference]: With dead ends: 230 [2018-01-28 22:50:39,482 INFO L226 Difference]: Without dead ends: 218 [2018-01-28 22:50:39,482 INFO L533 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 [2018-01-28 22:50:39,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-01-28 22:50:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 197. [2018-01-28 22:50:39,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-01-28 22:50:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 222 transitions. [2018-01-28 22:50:39,495 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 222 transitions. Word has length 25 [2018-01-28 22:50:39,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:39,496 INFO L432 AbstractCegarLoop]: Abstraction has 197 states and 222 transitions. [2018-01-28 22:50:39,496 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-28 22:50:39,496 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 222 transitions. [2018-01-28 22:50:39,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-28 22:50:39,497 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:39,497 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:50:39,497 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:39,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1109561887, now seen corresponding path program 1 times [2018-01-28 22:50:39,498 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:39,498 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:39,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:39,499 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:39,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:39,522 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:39,578 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:39,578 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:50:39,578 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:50:39,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:50:39,579 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:50:39,579 INFO L87 Difference]: Start difference. First operand 197 states and 222 transitions. Second operand 5 states. [2018-01-28 22:50:39,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:39,760 INFO L93 Difference]: Finished difference Result 284 states and 320 transitions. [2018-01-28 22:50:39,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:50:39,761 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-01-28 22:50:39,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:39,762 INFO L225 Difference]: With dead ends: 284 [2018-01-28 22:50:39,762 INFO L226 Difference]: Without dead ends: 283 [2018-01-28 22:50:39,762 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:50:39,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-01-28 22:50:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 196. [2018-01-28 22:50:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-01-28 22:50:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2018-01-28 22:50:39,774 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 27 [2018-01-28 22:50:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:39,774 INFO L432 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2018-01-28 22:50:39,774 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:50:39,774 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2018-01-28 22:50:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-28 22:50:39,775 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:39,776 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:50:39,776 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:39,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1109561886, now seen corresponding path program 1 times [2018-01-28 22:50:39,776 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:39,776 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:39,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:39,777 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:39,777 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:39,791 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:39,864 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:39,864 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:50:39,864 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:50:39,865 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:50:39,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:50:39,865 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand 5 states. [2018-01-28 22:50:40,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:40,102 INFO L93 Difference]: Finished difference Result 307 states and 348 transitions. [2018-01-28 22:50:40,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:50:40,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-01-28 22:50:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:40,104 INFO L225 Difference]: With dead ends: 307 [2018-01-28 22:50:40,105 INFO L226 Difference]: Without dead ends: 306 [2018-01-28 22:50:40,105 INFO L533 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 [2018-01-28 22:50:40,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-01-28 22:50:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 195. [2018-01-28 22:50:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-28 22:50:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 218 transitions. [2018-01-28 22:50:40,118 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 218 transitions. Word has length 27 [2018-01-28 22:50:40,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:40,118 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 218 transitions. [2018-01-28 22:50:40,118 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:50:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 218 transitions. [2018-01-28 22:50:40,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-28 22:50:40,119 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:40,120 INFO L330 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] [2018-01-28 22:50:40,120 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:40,120 INFO L82 PathProgramCache]: Analyzing trace with hash -438897733, now seen corresponding path program 1 times [2018-01-28 22:50:40,120 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:40,120 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:40,121 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:40,121 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:40,121 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:40,132 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:40,162 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:40,162 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 22:50:40,162 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:50:40,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:50:40,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:50:40,163 INFO L87 Difference]: Start difference. First operand 195 states and 218 transitions. Second operand 5 states. [2018-01-28 22:50:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:40,327 INFO L93 Difference]: Finished difference Result 252 states and 278 transitions. [2018-01-28 22:50:40,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:50:40,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-01-28 22:50:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:40,328 INFO L225 Difference]: With dead ends: 252 [2018-01-28 22:50:40,329 INFO L226 Difference]: Without dead ends: 209 [2018-01-28 22:50:40,329 INFO L533 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 [2018-01-28 22:50:40,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-01-28 22:50:40,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 195. [2018-01-28 22:50:40,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-28 22:50:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 216 transitions. [2018-01-28 22:50:40,340 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 216 transitions. Word has length 31 [2018-01-28 22:50:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:40,341 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 216 transitions. [2018-01-28 22:50:40,341 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:50:40,341 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 216 transitions. [2018-01-28 22:50:40,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-28 22:50:40,342 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:40,342 INFO L330 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] [2018-01-28 22:50:40,342 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:40,342 INFO L82 PathProgramCache]: Analyzing trace with hash -419373136, now seen corresponding path program 1 times [2018-01-28 22:50:40,343 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:40,343 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:40,344 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:40,344 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:40,344 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:40,358 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:40,449 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:40,449 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-28 22:50:40,449 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-28 22:50:40,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-28 22:50:40,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-01-28 22:50:40,450 INFO L87 Difference]: Start difference. First operand 195 states and 216 transitions. Second operand 9 states. [2018-01-28 22:50:40,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:40,816 INFO L93 Difference]: Finished difference Result 196 states and 216 transitions. [2018-01-28 22:50:40,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-28 22:50:40,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2018-01-28 22:50:40,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:40,818 INFO L225 Difference]: With dead ends: 196 [2018-01-28 22:50:40,818 INFO L226 Difference]: Without dead ends: 195 [2018-01-28 22:50:40,819 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2018-01-28 22:50:40,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-01-28 22:50:40,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2018-01-28 22:50:40,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-28 22:50:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 215 transitions. [2018-01-28 22:50:40,829 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 215 transitions. Word has length 32 [2018-01-28 22:50:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:40,829 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 215 transitions. [2018-01-28 22:50:40,830 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-28 22:50:40,830 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 215 transitions. [2018-01-28 22:50:40,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-28 22:50:40,830 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:40,830 INFO L330 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] [2018-01-28 22:50:40,830 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:40,831 INFO L82 PathProgramCache]: Analyzing trace with hash -419373135, now seen corresponding path program 1 times [2018-01-28 22:50:40,831 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:40,831 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:40,831 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:40,831 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:40,832 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:40,844 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:40,996 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:40,996 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-28 22:50:40,996 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-28 22:50:40,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-28 22:50:40,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-28 22:50:40,996 INFO L87 Difference]: Start difference. First operand 194 states and 215 transitions. Second operand 10 states. [2018-01-28 22:50:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:41,546 INFO L93 Difference]: Finished difference Result 198 states and 218 transitions. [2018-01-28 22:50:41,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-28 22:50:41,546 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-01-28 22:50:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:41,547 INFO L225 Difference]: With dead ends: 198 [2018-01-28 22:50:41,547 INFO L226 Difference]: Without dead ends: 187 [2018-01-28 22:50:41,548 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2018-01-28 22:50:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-01-28 22:50:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 173. [2018-01-28 22:50:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-01-28 22:50:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 193 transitions. [2018-01-28 22:50:41,554 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 193 transitions. Word has length 32 [2018-01-28 22:50:41,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:41,555 INFO L432 AbstractCegarLoop]: Abstraction has 173 states and 193 transitions. [2018-01-28 22:50:41,555 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-28 22:50:41,555 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 193 transitions. [2018-01-28 22:50:41,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-28 22:50:41,556 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:41,556 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:50:41,556 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:41,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1171127069, now seen corresponding path program 1 times [2018-01-28 22:50:41,557 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:41,557 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:41,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:41,558 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:41,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:41,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:41,574 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:41,590 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:41,590 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:50:41,591 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 22:50:41,591 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 22:50:41,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 22:50:41,591 INFO L87 Difference]: Start difference. First operand 173 states and 193 transitions. Second operand 4 states. [2018-01-28 22:50:41,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:41,657 INFO L93 Difference]: Finished difference Result 316 states and 355 transitions. [2018-01-28 22:50:41,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:50:41,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-01-28 22:50:41,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:41,659 INFO L225 Difference]: With dead ends: 316 [2018-01-28 22:50:41,659 INFO L226 Difference]: Without dead ends: 217 [2018-01-28 22:50:41,659 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:50:41,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-01-28 22:50:41,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 177. [2018-01-28 22:50:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-01-28 22:50:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2018-01-28 22:50:41,670 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 34 [2018-01-28 22:50:41,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:41,670 INFO L432 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2018-01-28 22:50:41,670 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 22:50:41,670 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2018-01-28 22:50:41,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-28 22:50:41,671 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:41,671 INFO L330 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] [2018-01-28 22:50:41,671 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:41,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1065360486, now seen corresponding path program 1 times [2018-01-28 22:50:41,672 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:41,672 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:41,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:41,673 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:41,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:41,685 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:41,776 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:41,776 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-28 22:50:41,776 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-28 22:50:41,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-28 22:50:41,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:50:41,776 INFO L87 Difference]: Start difference. First operand 177 states and 197 transitions. Second operand 8 states. [2018-01-28 22:50:42,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:42,110 INFO L93 Difference]: Finished difference Result 342 states and 377 transitions. [2018-01-28 22:50:42,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-28 22:50:42,111 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2018-01-28 22:50:42,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:42,112 INFO L225 Difference]: With dead ends: 342 [2018-01-28 22:50:42,112 INFO L226 Difference]: Without dead ends: 341 [2018-01-28 22:50:42,113 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-01-28 22:50:42,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-01-28 22:50:42,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 195. [2018-01-28 22:50:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-28 22:50:42,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 219 transitions. [2018-01-28 22:50:42,125 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 219 transitions. Word has length 36 [2018-01-28 22:50:42,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:42,126 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 219 transitions. [2018-01-28 22:50:42,127 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-28 22:50:42,127 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 219 transitions. [2018-01-28 22:50:42,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-28 22:50:42,128 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:42,128 INFO L330 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] [2018-01-28 22:50:42,128 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:42,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1065360485, now seen corresponding path program 1 times [2018-01-28 22:50:42,128 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:42,128 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:42,129 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:42,129 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:42,129 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:42,143 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:42,312 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:42,312 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-28 22:50:42,312 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-28 22:50:42,312 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-28 22:50:42,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-01-28 22:50:42,313 INFO L87 Difference]: Start difference. First operand 195 states and 219 transitions. Second operand 9 states. [2018-01-28 22:50:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:42,940 INFO L93 Difference]: Finished difference Result 392 states and 434 transitions. [2018-01-28 22:50:42,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-28 22:50:42,940 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-01-28 22:50:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:42,942 INFO L225 Difference]: With dead ends: 392 [2018-01-28 22:50:42,942 INFO L226 Difference]: Without dead ends: 291 [2018-01-28 22:50:42,943 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2018-01-28 22:50:42,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-01-28 22:50:42,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 191. [2018-01-28 22:50:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-28 22:50:42,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 213 transitions. [2018-01-28 22:50:42,966 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 213 transitions. Word has length 36 [2018-01-28 22:50:42,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:42,967 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 213 transitions. [2018-01-28 22:50:42,967 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-28 22:50:42,967 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 213 transitions. [2018-01-28 22:50:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-28 22:50:42,968 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:42,968 INFO L330 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] [2018-01-28 22:50:42,968 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:42,968 INFO L82 PathProgramCache]: Analyzing trace with hash 2043097809, now seen corresponding path program 1 times [2018-01-28 22:50:42,968 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:42,968 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:42,969 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:42,969 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:42,969 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:42,988 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:43,110 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:43,110 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-28 22:50:43,110 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-28 22:50:43,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-28 22:50:43,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-28 22:50:43,111 INFO L87 Difference]: Start difference. First operand 191 states and 213 transitions. Second operand 9 states. [2018-01-28 22:50:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:43,730 INFO L93 Difference]: Finished difference Result 556 states and 612 transitions. [2018-01-28 22:50:43,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-28 22:50:43,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-01-28 22:50:43,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:43,732 INFO L225 Difference]: With dead ends: 556 [2018-01-28 22:50:43,732 INFO L226 Difference]: Without dead ends: 555 [2018-01-28 22:50:43,732 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2018-01-28 22:50:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2018-01-28 22:50:43,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 208. [2018-01-28 22:50:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-01-28 22:50:43,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 234 transitions. [2018-01-28 22:50:43,750 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 234 transitions. Word has length 37 [2018-01-28 22:50:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:43,750 INFO L432 AbstractCegarLoop]: Abstraction has 208 states and 234 transitions. [2018-01-28 22:50:43,750 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-28 22:50:43,751 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 234 transitions. [2018-01-28 22:50:43,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-28 22:50:43,751 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:43,751 INFO L330 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] [2018-01-28 22:50:43,752 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:43,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2043097810, now seen corresponding path program 1 times [2018-01-28 22:50:43,752 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:43,752 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:43,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:43,753 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:43,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:43,767 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:43,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:43,986 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:43,986 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-28 22:50:43,986 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-28 22:50:43,987 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-28 22:50:43,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-01-28 22:50:43,987 INFO L87 Difference]: Start difference. First operand 208 states and 234 transitions. Second operand 11 states. [2018-01-28 22:50:44,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:44,581 INFO L93 Difference]: Finished difference Result 416 states and 460 transitions. [2018-01-28 22:50:44,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-28 22:50:44,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2018-01-28 22:50:44,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:44,583 INFO L225 Difference]: With dead ends: 416 [2018-01-28 22:50:44,583 INFO L226 Difference]: Without dead ends: 415 [2018-01-28 22:50:44,583 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-28 22:50:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-01-28 22:50:44,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 208. [2018-01-28 22:50:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-01-28 22:50:44,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 233 transitions. [2018-01-28 22:50:44,593 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 233 transitions. Word has length 37 [2018-01-28 22:50:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:44,593 INFO L432 AbstractCegarLoop]: Abstraction has 208 states and 233 transitions. [2018-01-28 22:50:44,593 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-28 22:50:44,593 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 233 transitions. [2018-01-28 22:50:44,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-01-28 22:50:44,594 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:44,594 INFO L330 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] [2018-01-28 22:50:44,594 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:44,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1982432584, now seen corresponding path program 1 times [2018-01-28 22:50:44,594 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:44,594 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:44,595 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:44,595 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:44,595 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:44,603 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:44,647 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:44,647 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:50:44,648 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:50:44,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:50:44,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:50:44,648 INFO L87 Difference]: Start difference. First operand 208 states and 233 transitions. Second operand 5 states. [2018-01-28 22:50:45,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:45,190 INFO L93 Difference]: Finished difference Result 344 states and 383 transitions. [2018-01-28 22:50:45,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-28 22:50:45,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2018-01-28 22:50:45,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:45,192 INFO L225 Difference]: With dead ends: 344 [2018-01-28 22:50:45,192 INFO L226 Difference]: Without dead ends: 343 [2018-01-28 22:50:45,192 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:50:45,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-01-28 22:50:45,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 207. [2018-01-28 22:50:45,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-01-28 22:50:45,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 232 transitions. [2018-01-28 22:50:45,203 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 232 transitions. Word has length 40 [2018-01-28 22:50:45,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:45,203 INFO L432 AbstractCegarLoop]: Abstraction has 207 states and 232 transitions. [2018-01-28 22:50:45,203 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:50:45,203 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 232 transitions. [2018-01-28 22:50:45,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-01-28 22:50:45,204 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:45,204 INFO L330 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] [2018-01-28 22:50:45,204 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:45,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1982432583, now seen corresponding path program 1 times [2018-01-28 22:50:45,204 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:45,204 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:45,205 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:45,205 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:45,205 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:45,219 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:45,367 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:45,367 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:50:45,367 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:50:45,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:50:45,367 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:50:45,368 INFO L87 Difference]: Start difference. First operand 207 states and 232 transitions. Second operand 5 states. [2018-01-28 22:50:45,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:45,569 INFO L93 Difference]: Finished difference Result 349 states and 392 transitions. [2018-01-28 22:50:45,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:50:45,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2018-01-28 22:50:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:45,571 INFO L225 Difference]: With dead ends: 349 [2018-01-28 22:50:45,571 INFO L226 Difference]: Without dead ends: 348 [2018-01-28 22:50:45,572 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:50:45,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2018-01-28 22:50:45,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 206. [2018-01-28 22:50:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-28 22:50:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 231 transitions. [2018-01-28 22:50:45,586 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 231 transitions. Word has length 40 [2018-01-28 22:50:45,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:45,587 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 231 transitions. [2018-01-28 22:50:45,587 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:50:45,587 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 231 transitions. [2018-01-28 22:50:45,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-01-28 22:50:45,588 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:45,588 INFO L330 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] [2018-01-28 22:50:45,588 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:45,588 INFO L82 PathProgramCache]: Analyzing trace with hash 874397683, now seen corresponding path program 1 times [2018-01-28 22:50:45,588 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:45,588 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:45,589 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:45,589 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:45,589 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:45,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:45,598 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:45,626 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:50:45,626 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:50:45,627 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 22:50:45,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 22:50:45,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 22:50:45,627 INFO L87 Difference]: Start difference. First operand 206 states and 231 transitions. Second operand 4 states. [2018-01-28 22:50:45,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:45,656 INFO L93 Difference]: Finished difference Result 323 states and 360 transitions. [2018-01-28 22:50:45,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:50:45,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-01-28 22:50:45,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:45,657 INFO L225 Difference]: With dead ends: 323 [2018-01-28 22:50:45,657 INFO L226 Difference]: Without dead ends: 229 [2018-01-28 22:50:45,658 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:50:45,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-01-28 22:50:45,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 210. [2018-01-28 22:50:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-01-28 22:50:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 235 transitions. [2018-01-28 22:50:45,674 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 235 transitions. Word has length 51 [2018-01-28 22:50:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:45,674 INFO L432 AbstractCegarLoop]: Abstraction has 210 states and 235 transitions. [2018-01-28 22:50:45,675 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 22:50:45,675 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 235 transitions. [2018-01-28 22:50:45,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-01-28 22:50:45,675 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:45,676 INFO L330 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] [2018-01-28 22:50:45,676 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:45,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1286133230, now seen corresponding path program 1 times [2018-01-28 22:50:45,676 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:45,676 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:45,677 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:45,677 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:45,677 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:45,688 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:45,841 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:50:45,868 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 [2018-01-28 22:50:45,876 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:45,919 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:50:46,016 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 [2018-01-28 22:50:46,020 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 [2018-01-28 22:50:46,020 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,021 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,029 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 [2018-01-28 22:50:46,030 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 [2018-01-28 22:50:46,030 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,044 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,061 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,062 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:29, output treesize:18 [2018-01-28 22:50:46,124 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 [2018-01-28 22:50:46,128 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,131 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 [2018-01-28 22:50:46,132 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,138 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,181 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 [2018-01-28 22:50:46,185 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,186 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 [2018-01-28 22:50:46,187 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,193 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,202 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,202 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:49, output treesize:36 [2018-01-28 22:50:46,236 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2018-01-28 22:50:46,240 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,241 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,242 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,244 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2018-01-28 22:50:46,245 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,263 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,348 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2018-01-28 22:50:46,351 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,364 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,365 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,380 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2018-01-28 22:50:46,381 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,431 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,464 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,464 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:74, output treesize:36 [2018-01-28 22:50:46,483 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2018-01-28 22:50:46,495 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,496 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,497 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,498 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 46 [2018-01-28 22:50:46,498 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,511 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,531 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2018-01-28 22:50:46,535 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,538 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,539 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:46,542 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 46 [2018-01-28 22:50:46,543 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,553 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,566 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,566 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:67, output treesize:54 [2018-01-28 22:50:46,613 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 29 treesize of output 21 [2018-01-28 22:50:46,617 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2018-01-28 22:50:46,617 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,618 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,624 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 29 treesize of output 21 [2018-01-28 22:50:46,626 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 3 [2018-01-28 22:50:46,626 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,627 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,629 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:46,629 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:57, output treesize:7 [2018-01-28 22:50:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:46,664 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:50:46,664 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 12 [2018-01-28 22:50:46,665 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-28 22:50:46,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-28 22:50:46,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-01-28 22:50:46,665 INFO L87 Difference]: Start difference. First operand 210 states and 235 transitions. Second operand 12 states. [2018-01-28 22:50:47,147 WARN L143 SmtUtils]: Spent 143ms on a formula simplification that was a NOOP. DAG size: 46 [2018-01-28 22:50:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:47,724 INFO L93 Difference]: Finished difference Result 396 states and 436 transitions. [2018-01-28 22:50:47,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-28 22:50:47,725 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2018-01-28 22:50:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:47,726 INFO L225 Difference]: With dead ends: 396 [2018-01-28 22:50:47,726 INFO L226 Difference]: Without dead ends: 311 [2018-01-28 22:50:47,727 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=234, Invalid=578, Unknown=0, NotChecked=0, Total=812 [2018-01-28 22:50:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-28 22:50:47,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 234. [2018-01-28 22:50:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-01-28 22:50:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 260 transitions. [2018-01-28 22:50:47,752 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 260 transitions. Word has length 53 [2018-01-28 22:50:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:47,752 INFO L432 AbstractCegarLoop]: Abstraction has 234 states and 260 transitions. [2018-01-28 22:50:47,753 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-28 22:50:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 260 transitions. [2018-01-28 22:50:47,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-28 22:50:47,754 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:47,754 INFO L330 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, 1] [2018-01-28 22:50:47,754 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:47,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1995648683, now seen corresponding path program 1 times [2018-01-28 22:50:47,754 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:47,754 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:47,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:47,755 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:47,755 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:47,784 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:48,280 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:50:48,280 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 [2018-01-28 22:50:48,286 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:48,322 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:50:48,337 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 [2018-01-28 22:50:48,339 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 [2018-01-28 22:50:48,340 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,342 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,346 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,346 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-01-28 22:50:48,392 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:48,406 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:48,407 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-01-28 22:50:48,407 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,443 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,443 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:23 [2018-01-28 22:50:48,482 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2018-01-28 22:50:48,484 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:48,484 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2018-01-28 22:50:48,485 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,489 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,496 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,496 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:39, output treesize:32 [2018-01-28 22:50:48,552 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:48,554 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 43 [2018-01-28 22:50:48,557 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 14 treesize of output 13 [2018-01-28 22:50:48,557 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,562 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,569 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 22:50:48,569 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:53, output treesize:45 [2018-01-28 22:50:48,704 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 40 [2018-01-28 22:50:48,713 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 23 [2018-01-28 22:50:48,714 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-01-28 22:50:48,727 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-28 22:50:48,752 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-01-28 22:50:48,752 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:90 [2018-01-28 22:50:48,818 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:48,831 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 50 [2018-01-28 22:50:48,834 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:48,835 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 22 treesize of output 14 [2018-01-28 22:50:48,836 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,843 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,851 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,851 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:59, output treesize:36 [2018-01-28 22:50:48,883 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2018-01-28 22:50:48,886 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:48,888 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-01-28 22:50:48,888 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,895 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,902 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 22:50:48,903 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:54 [2018-01-28 22:50:48,979 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 36 [2018-01-28 22:50:48,982 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:50:48,983 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 15 treesize of output 6 [2018-01-28 22:50:48,983 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,989 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 8 [2018-01-28 22:50:48,990 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-28 22:50:48,998 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:49,001 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:50:49,001 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:56, output treesize:5 [2018-01-28 22:50:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:50:49,034 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:50:49,034 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 27 [2018-01-28 22:50:49,034 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-28 22:50:49,034 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-28 22:50:49,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=612, Unknown=1, NotChecked=0, Total=756 [2018-01-28 22:50:49,035 INFO L87 Difference]: Start difference. First operand 234 states and 260 transitions. Second operand 28 states. [2018-01-28 22:50:50,530 WARN L146 SmtUtils]: Spent 231ms on a formula simplification. DAG size of input: 58 DAG size of output 37 [2018-01-28 22:50:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:50:51,056 INFO L93 Difference]: Finished difference Result 476 states and 513 transitions. [2018-01-28 22:50:51,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-28 22:50:51,079 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 57 [2018-01-28 22:50:51,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:50:51,081 INFO L225 Difference]: With dead ends: 476 [2018-01-28 22:50:51,081 INFO L226 Difference]: Without dead ends: 475 [2018-01-28 22:50:51,082 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=624, Invalid=2344, Unknown=2, NotChecked=0, Total=2970 [2018-01-28 22:50:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2018-01-28 22:50:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 272. [2018-01-28 22:50:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2018-01-28 22:50:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 304 transitions. [2018-01-28 22:50:51,106 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 304 transitions. Word has length 57 [2018-01-28 22:50:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:50:51,106 INFO L432 AbstractCegarLoop]: Abstraction has 272 states and 304 transitions. [2018-01-28 22:50:51,106 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-28 22:50:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 304 transitions. [2018-01-28 22:50:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-28 22:50:51,107 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:50:51,107 INFO L330 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, 1] [2018-01-28 22:50:51,107 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr68EnsuresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:50:51,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1995648684, now seen corresponding path program 1 times [2018-01-28 22:50:51,108 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:50:51,108 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:50:51,109 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:51,109 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:50:51,109 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:50:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:50:51,132 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:50:51,275 ERROR L119 erpolLogProxyWrapper]: Could not assert interpolant [2018-01-28 22:50:51,276 ERROR L119 erpolLogProxyWrapper]: Interpolant 23 not inductive: (Check returned sat) [2018-01-28 22:50:51,277 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Asserted terms must be closed at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.assertTerm(SMTInterpol.java:654) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:956) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-28 22:50:51,280 INFO L168 Benchmark]: Toolchain (without parser) took 15250.94 ms. Allocated memory was 297.3 MB in the beginning and 613.4 MB in the end (delta: 316.1 MB). Free memory was 257.3 MB in the beginning and 287.1 MB in the end (delta: -29.8 MB). Peak memory consumption was 286.3 MB. Max. memory is 5.3 GB. [2018-01-28 22:50:51,281 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 297.3 MB. Free memory is still 263.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 22:50:51,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.25 ms. Allocated memory is still 297.3 MB. Free memory was 256.3 MB in the beginning and 244.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. [2018-01-28 22:50:51,281 INFO L168 Benchmark]: Boogie Preprocessor took 44.46 ms. Allocated memory is still 297.3 MB. Free memory was 244.2 MB in the beginning and 242.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:50:51,282 INFO L168 Benchmark]: RCFGBuilder took 607.28 ms. Allocated memory is still 297.3 MB. Free memory was 242.2 MB in the beginning and 199.0 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 5.3 GB. [2018-01-28 22:50:51,282 INFO L168 Benchmark]: TraceAbstraction took 14383.53 ms. Allocated memory was 297.3 MB in the beginning and 613.4 MB in the end (delta: 316.1 MB). Free memory was 199.0 MB in the beginning and 287.1 MB in the end (delta: -88.1 MB). Peak memory consumption was 228.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:50:51,284 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 297.3 MB. Free memory is still 263.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 207.25 ms. Allocated memory is still 297.3 MB. Free memory was 256.3 MB in the beginning and 244.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 44.46 ms. Allocated memory is still 297.3 MB. Free memory was 244.2 MB in the beginning and 242.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 607.28 ms. Allocated memory is still 297.3 MB. Free memory was 242.2 MB in the beginning and 199.0 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 14383.53 ms. Allocated memory was 297.3 MB in the beginning and 613.4 MB in the end (delta: 316.1 MB). Free memory was 199.0 MB in the beginning and 287.1 MB in the end (delta: -88.1 MB). Peak memory consumption was 228.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Asserted terms must be closed de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Asserted terms must be closed: de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.assertTerm(SMTInterpol.java:654) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-optional_true-unreach-call_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-28_22-50-51-291.csv Received shutdown request...