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/sll-01_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-28 22:56:50,610 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 22:56:50,612 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 22:56:50,627 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 22:56:50,628 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 22:56:50,629 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 22:56:50,630 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 22:56:50,631 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 22:56:50,634 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 22:56:50,635 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 22:56:50,635 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 22:56:50,636 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 22:56:50,637 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 22:56:50,638 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 22:56:50,639 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 22:56:50,641 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 22:56:50,643 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 22:56:50,645 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 22:56:50,647 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 22:56:50,648 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 22:56:50,650 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-28 22:56:50,651 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-28 22:56:50,651 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-28 22:56:50,652 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-28 22:56:50,653 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-28 22:56:50,654 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-28 22:56:50,654 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-28 22:56:50,655 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-28 22:56:50,655 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-28 22:56:50,656 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 22:56:50,656 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 22:56:50,656 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 22:56:50,665 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 22:56:50,665 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 22:56:50,666 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 22:56:50,666 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 22:56:50,666 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 22:56:50,666 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 22:56:50,666 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 22:56:50,667 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 22:56:50,667 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 22:56:50,667 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 22:56:50,667 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 22:56:50,667 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 22:56:50,667 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 22:56:50,667 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 22:56:50,668 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 22:56:50,668 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 22:56:50,668 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 22:56:50,668 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 22:56:50,668 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 22:56:50,668 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 22:56:50,668 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 22:56:50,669 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 22:56:50,669 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 22:56:50,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 22:56:50,669 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 22:56:50,669 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 22:56:50,670 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 22:56:50,670 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 22:56:50,670 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 22:56:50,670 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 22:56:50,670 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 22:56:50,670 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 22:56:50,671 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 22:56:50,671 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 22:56:50,704 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 22:56:50,715 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 22:56:50,718 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 22:56:50,720 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 22:56:50,720 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 22:56:50,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01_true-unreach-call_true-valid-memsafety.i [2018-01-28 22:56:50,892 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 22:56:50,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-28 22:56:50,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 22:56:50,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 22:56:50,903 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 22:56:50,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:56:50" (1/1) ... [2018-01-28 22:56:50,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0ca447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:56:50, skipping insertion in model container [2018-01-28 22:56:50,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:56:50" (1/1) ... [2018-01-28 22:56:50,922 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:56:50,966 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:56:51,104 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:56:51,131 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:56:51,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:56:51 WrapperNode [2018-01-28 22:56:51,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 22:56:51,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 22:56:51,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 22:56:51,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 22:56:51,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:56:51" (1/1) ... [2018-01-28 22:56:51,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:56:51" (1/1) ... [2018-01-28 22:56:51,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:56:51" (1/1) ... [2018-01-28 22:56:51,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:56:51" (1/1) ... [2018-01-28 22:56:51,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:56:51" (1/1) ... [2018-01-28 22:56:51,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:56:51" (1/1) ... [2018-01-28 22:56:51,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:56:51" (1/1) ... [2018-01-28 22:56:51,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 22:56:51,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 22:56:51,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 22:56:51,190 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 22:56:51,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:56:51" (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 22:56:51,244 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 22:56:51,244 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 22:56:51,244 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 22:56:51,244 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-28 22:56:51,244 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-28 22:56:51,244 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 22:56:51,244 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 22:56:51,244 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-28 22:56:51,245 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-28 22:56:51,245 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-28 22:56:51,245 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-28 22:56:51,245 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-28 22:56:51,245 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 22:56:51,245 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 22:56:51,245 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 22:56:51,883 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 22:56:51,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:56:51 BoogieIcfgContainer [2018-01-28 22:56:51,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 22:56:51,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 22:56:51,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 22:56:51,887 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 22:56:51,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:56:50" (1/3) ... [2018-01-28 22:56:51,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d661173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:56:51, skipping insertion in model container [2018-01-28 22:56:51,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:56:51" (2/3) ... [2018-01-28 22:56:51,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d661173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:56:51, skipping insertion in model container [2018-01-28 22:56:51,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:56:51" (3/3) ... [2018-01-28 22:56:51,891 INFO L107 eAbstractionObserver]: Analyzing ICFG sll-01_true-unreach-call_true-valid-memsafety.i [2018-01-28 22:56:51,897 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 22:56:51,905 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 63 error locations. [2018-01-28 22:56:51,948 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 22:56:51,948 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 22:56:51,948 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 22:56:51,948 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 22:56:51,948 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 22:56:51,948 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 22:56:51,948 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 22:56:51,949 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 22:56:51,949 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 22:56:51,969 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states. [2018-01-28 22:56:51,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-28 22:56:51,976 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:51,976 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:56:51,977 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:51,980 INFO L82 PathProgramCache]: Analyzing trace with hash -355028435, now seen corresponding path program 1 times [2018-01-28 22:56:51,982 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:51,982 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:52,022 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:52,023 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:52,023 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:52,066 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:52,161 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 22:56:52,243 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:52,244 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 22:56:52,246 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 22:56:52,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 22:56:52,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 22:56:52,263 INFO L87 Difference]: Start difference. First operand 233 states. Second operand 4 states. [2018-01-28 22:56:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:52,567 INFO L93 Difference]: Finished difference Result 492 states and 619 transitions. [2018-01-28 22:56:52,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:56:52,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-01-28 22:56:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:52,583 INFO L225 Difference]: With dead ends: 492 [2018-01-28 22:56:52,583 INFO L226 Difference]: Without dead ends: 237 [2018-01-28 22:56:52,588 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 22:56:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-01-28 22:56:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 203. [2018-01-28 22:56:52,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-01-28 22:56:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 215 transitions. [2018-01-28 22:56:52,641 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 215 transitions. Word has length 9 [2018-01-28 22:56:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:52,641 INFO L432 AbstractCegarLoop]: Abstraction has 203 states and 215 transitions. [2018-01-28 22:56:52,641 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 22:56:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 215 transitions. [2018-01-28 22:56:52,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-28 22:56:52,642 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:52,642 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:56:52,643 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:52,643 INFO L82 PathProgramCache]: Analyzing trace with hash -355028434, now seen corresponding path program 1 times [2018-01-28 22:56:52,643 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:52,643 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:52,644 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:52,644 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:52,644 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:52,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:52,752 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 22:56:52,753 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:52,753 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 22:56:52,755 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 22:56:52,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 22:56:52,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 22:56:52,755 INFO L87 Difference]: Start difference. First operand 203 states and 215 transitions. Second operand 4 states. [2018-01-28 22:56:52,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:52,924 INFO L93 Difference]: Finished difference Result 240 states and 252 transitions. [2018-01-28 22:56:52,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-28 22:56:52,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-01-28 22:56:52,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:52,927 INFO L225 Difference]: With dead ends: 240 [2018-01-28 22:56:52,927 INFO L226 Difference]: Without dead ends: 230 [2018-01-28 22:56:52,928 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 22:56:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2018-01-28 22:56:52,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 219. [2018-01-28 22:56:52,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-28 22:56:52,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 238 transitions. [2018-01-28 22:56:52,945 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 238 transitions. Word has length 9 [2018-01-28 22:56:52,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:52,945 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 238 transitions. [2018-01-28 22:56:52,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 22:56:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 238 transitions. [2018-01-28 22:56:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-28 22:56:52,946 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:52,946 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:56:52,946 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:52,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1724456866, now seen corresponding path program 1 times [2018-01-28 22:56:52,946 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:52,946 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:52,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:52,948 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:52,948 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:52,965 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:53,029 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 22:56:53,029 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:53,029 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:56:53,029 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:56:53,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:56:53,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:56:53,030 INFO L87 Difference]: Start difference. First operand 219 states and 238 transitions. Second operand 5 states. [2018-01-28 22:56:53,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:53,474 INFO L93 Difference]: Finished difference Result 375 states and 402 transitions. [2018-01-28 22:56:53,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:56:53,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-28 22:56:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:53,477 INFO L225 Difference]: With dead ends: 375 [2018-01-28 22:56:53,478 INFO L226 Difference]: Without dead ends: 374 [2018-01-28 22:56:53,478 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 22:56:53,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2018-01-28 22:56:53,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 218. [2018-01-28 22:56:53,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-01-28 22:56:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 237 transitions. [2018-01-28 22:56:53,497 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 237 transitions. Word has length 19 [2018-01-28 22:56:53,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:53,497 INFO L432 AbstractCegarLoop]: Abstraction has 218 states and 237 transitions. [2018-01-28 22:56:53,498 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:56:53,498 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 237 transitions. [2018-01-28 22:56:53,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-28 22:56:53,499 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:53,499 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:56:53,499 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:53,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1724456865, now seen corresponding path program 1 times [2018-01-28 22:56:53,500 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:53,500 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:53,501 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:53,502 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:53,502 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:53,521 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:53,607 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 22:56:53,607 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:53,607 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:56:53,607 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:56:53,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:56:53,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:56:53,608 INFO L87 Difference]: Start difference. First operand 218 states and 237 transitions. Second operand 5 states. [2018-01-28 22:56:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:53,900 INFO L93 Difference]: Finished difference Result 408 states and 445 transitions. [2018-01-28 22:56:53,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:56:53,901 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-28 22:56:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:53,903 INFO L225 Difference]: With dead ends: 408 [2018-01-28 22:56:53,903 INFO L226 Difference]: Without dead ends: 407 [2018-01-28 22:56:53,904 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 22:56:53,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-01-28 22:56:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 217. [2018-01-28 22:56:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-01-28 22:56:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 236 transitions. [2018-01-28 22:56:53,916 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 236 transitions. Word has length 19 [2018-01-28 22:56:53,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:53,917 INFO L432 AbstractCegarLoop]: Abstraction has 217 states and 236 transitions. [2018-01-28 22:56:53,917 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:56:53,917 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 236 transitions. [2018-01-28 22:56:53,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-28 22:56:53,918 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:53,918 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] [2018-01-28 22:56:53,918 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:53,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1190646662, now seen corresponding path program 1 times [2018-01-28 22:56:53,919 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:53,919 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:53,920 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:53,920 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:53,920 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:53,945 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:54,081 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 22:56:54,081 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:54,081 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-28 22:56:54,081 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-28 22:56:54,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-28 22:56:54,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:56:54,082 INFO L87 Difference]: Start difference. First operand 217 states and 236 transitions. Second operand 8 states. [2018-01-28 22:56:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:54,513 INFO L93 Difference]: Finished difference Result 378 states and 403 transitions. [2018-01-28 22:56:54,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-28 22:56:54,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-01-28 22:56:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:54,516 INFO L225 Difference]: With dead ends: 378 [2018-01-28 22:56:54,516 INFO L226 Difference]: Without dead ends: 377 [2018-01-28 22:56:54,517 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-28 22:56:54,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-01-28 22:56:54,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 216. [2018-01-28 22:56:54,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-01-28 22:56:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 235 transitions. [2018-01-28 22:56:54,529 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 235 transitions. Word has length 22 [2018-01-28 22:56:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:54,529 INFO L432 AbstractCegarLoop]: Abstraction has 216 states and 235 transitions. [2018-01-28 22:56:54,529 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-28 22:56:54,529 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 235 transitions. [2018-01-28 22:56:54,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-28 22:56:54,530 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:54,530 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] [2018-01-28 22:56:54,530 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:54,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1190646661, now seen corresponding path program 1 times [2018-01-28 22:56:54,531 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:54,531 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:54,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:54,532 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:54,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:54,549 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:54,689 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 22:56:54,689 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:54,690 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-28 22:56:54,690 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-28 22:56:54,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-28 22:56:54,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:56:54,691 INFO L87 Difference]: Start difference. First operand 216 states and 235 transitions. Second operand 8 states. [2018-01-28 22:56:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:55,246 INFO L93 Difference]: Finished difference Result 380 states and 405 transitions. [2018-01-28 22:56:55,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-28 22:56:55,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-01-28 22:56:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:55,248 INFO L225 Difference]: With dead ends: 380 [2018-01-28 22:56:55,248 INFO L226 Difference]: Without dead ends: 379 [2018-01-28 22:56:55,248 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-28 22:56:55,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-01-28 22:56:55,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 215. [2018-01-28 22:56:55,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-01-28 22:56:55,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 234 transitions. [2018-01-28 22:56:55,257 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 234 transitions. Word has length 22 [2018-01-28 22:56:55,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:55,257 INFO L432 AbstractCegarLoop]: Abstraction has 215 states and 234 transitions. [2018-01-28 22:56:55,257 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-28 22:56:55,257 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 234 transitions. [2018-01-28 22:56:55,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-28 22:56:55,258 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:55,258 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 22:56:55,258 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:55,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1328822523, now seen corresponding path program 1 times [2018-01-28 22:56:55,258 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:55,259 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:55,259 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:55,260 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:55,260 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:55,269 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:55,312 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 22:56:55,313 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:55,313 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 22:56:55,313 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:56:55,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:56:55,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:56:55,314 INFO L87 Difference]: Start difference. First operand 215 states and 234 transitions. Second operand 5 states. [2018-01-28 22:56:55,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:55,416 INFO L93 Difference]: Finished difference Result 505 states and 547 transitions. [2018-01-28 22:56:55,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:56:55,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-28 22:56:55,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:55,418 INFO L225 Difference]: With dead ends: 505 [2018-01-28 22:56:55,418 INFO L226 Difference]: Without dead ends: 321 [2018-01-28 22:56:55,419 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 22:56:55,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-01-28 22:56:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 219. [2018-01-28 22:56:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-28 22:56:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 238 transitions. [2018-01-28 22:56:55,431 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 238 transitions. Word has length 32 [2018-01-28 22:56:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:55,431 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 238 transitions. [2018-01-28 22:56:55,431 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:56:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 238 transitions. [2018-01-28 22:56:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-28 22:56:55,432 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:55,432 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 22:56:55,433 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:55,433 INFO L82 PathProgramCache]: Analyzing trace with hash 727221888, now seen corresponding path program 1 times [2018-01-28 22:56:55,433 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:55,433 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:55,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:55,434 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:55,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:55,446 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:55,502 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 22:56:55,503 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:55,503 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:56:55,503 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:56:55,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:56:55,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:56:55,504 INFO L87 Difference]: Start difference. First operand 219 states and 238 transitions. Second operand 5 states. [2018-01-28 22:56:55,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:55,672 INFO L93 Difference]: Finished difference Result 243 states and 257 transitions. [2018-01-28 22:56:55,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-28 22:56:55,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2018-01-28 22:56:55,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:55,673 INFO L225 Difference]: With dead ends: 243 [2018-01-28 22:56:55,673 INFO L226 Difference]: Without dead ends: 231 [2018-01-28 22:56:55,674 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:56:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-01-28 22:56:55,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 212. [2018-01-28 22:56:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-01-28 22:56:55,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 231 transitions. [2018-01-28 22:56:55,683 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 231 transitions. Word has length 34 [2018-01-28 22:56:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:55,684 INFO L432 AbstractCegarLoop]: Abstraction has 212 states and 231 transitions. [2018-01-28 22:56:55,684 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:56:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 231 transitions. [2018-01-28 22:56:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-28 22:56:55,685 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:55,685 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 22:56:55,685 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:55,686 INFO L82 PathProgramCache]: Analyzing trace with hash 727221889, now seen corresponding path program 1 times [2018-01-28 22:56:55,686 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:55,686 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:55,687 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:55,687 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:55,687 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:55,699 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:55,830 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 22:56:55,830 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:55,831 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 22:56:55,831 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-28 22:56:55,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-28 22:56:55,831 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:56:55,831 INFO L87 Difference]: Start difference. First operand 212 states and 231 transitions. Second operand 7 states. [2018-01-28 22:56:56,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:56,058 INFO L93 Difference]: Finished difference Result 276 states and 291 transitions. [2018-01-28 22:56:56,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:56:56,058 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2018-01-28 22:56:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:56,060 INFO L225 Difference]: With dead ends: 276 [2018-01-28 22:56:56,060 INFO L226 Difference]: Without dead ends: 272 [2018-01-28 22:56:56,060 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-28 22:56:56,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-28 22:56:56,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 246. [2018-01-28 22:56:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-01-28 22:56:56,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 273 transitions. [2018-01-28 22:56:56,072 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 273 transitions. Word has length 34 [2018-01-28 22:56:56,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:56,072 INFO L432 AbstractCegarLoop]: Abstraction has 246 states and 273 transitions. [2018-01-28 22:56:56,072 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-28 22:56:56,072 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 273 transitions. [2018-01-28 22:56:56,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-28 22:56:56,073 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:56,073 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] [2018-01-28 22:56:56,073 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:56,073 INFO L82 PathProgramCache]: Analyzing trace with hash 651802564, now seen corresponding path program 1 times [2018-01-28 22:56:56,073 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:56,073 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:56,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:56,074 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:56,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:56,086 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:56,133 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 22:56:56,133 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:56,133 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 22:56:56,134 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 22:56:56,134 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 22:56:56,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:56:56,134 INFO L87 Difference]: Start difference. First operand 246 states and 273 transitions. Second operand 6 states. [2018-01-28 22:56:56,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:56,460 INFO L93 Difference]: Finished difference Result 356 states and 396 transitions. [2018-01-28 22:56:56,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-28 22:56:56,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-01-28 22:56:56,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:56,462 INFO L225 Difference]: With dead ends: 356 [2018-01-28 22:56:56,462 INFO L226 Difference]: Without dead ends: 355 [2018-01-28 22:56:56,463 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-01-28 22:56:56,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-01-28 22:56:56,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 245. [2018-01-28 22:56:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-28 22:56:56,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 272 transitions. [2018-01-28 22:56:56,477 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 272 transitions. Word has length 38 [2018-01-28 22:56:56,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:56,477 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 272 transitions. [2018-01-28 22:56:56,477 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 22:56:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 272 transitions. [2018-01-28 22:56:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-28 22:56:56,478 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:56,479 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] [2018-01-28 22:56:56,479 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:56,479 INFO L82 PathProgramCache]: Analyzing trace with hash 651802565, now seen corresponding path program 1 times [2018-01-28 22:56:56,479 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:56,479 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:56,480 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:56,480 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:56,480 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:56,491 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:56,562 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 22:56:56,563 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:56,563 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 22:56:56,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 22:56:56,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 22:56:56,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:56:56,564 INFO L87 Difference]: Start difference. First operand 245 states and 272 transitions. Second operand 6 states. [2018-01-28 22:56:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:56,999 INFO L93 Difference]: Finished difference Result 390 states and 438 transitions. [2018-01-28 22:56:56,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-28 22:56:56,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-01-28 22:56:57,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:57,001 INFO L225 Difference]: With dead ends: 390 [2018-01-28 22:56:57,001 INFO L226 Difference]: Without dead ends: 381 [2018-01-28 22:56:57,002 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-01-28 22:56:57,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-01-28 22:56:57,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 229. [2018-01-28 22:56:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-28 22:56:57,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 255 transitions. [2018-01-28 22:56:57,010 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 255 transitions. Word has length 38 [2018-01-28 22:56:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:57,011 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 255 transitions. [2018-01-28 22:56:57,011 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 22:56:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 255 transitions. [2018-01-28 22:56:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-28 22:56:57,011 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:57,011 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, 1, 1, 1] [2018-01-28 22:56:57,011 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:57,012 INFO L82 PathProgramCache]: Analyzing trace with hash -827939108, now seen corresponding path program 1 times [2018-01-28 22:56:57,012 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:57,012 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:57,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:57,013 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:57,013 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:57,022 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:57,072 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 22:56:57,072 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:57,072 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 22:56:57,073 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:56:57,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:56:57,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:56:57,073 INFO L87 Difference]: Start difference. First operand 229 states and 255 transitions. Second operand 5 states. [2018-01-28 22:56:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:57,167 INFO L93 Difference]: Finished difference Result 317 states and 342 transitions. [2018-01-28 22:56:57,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:56:57,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-01-28 22:56:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:57,168 INFO L225 Difference]: With dead ends: 317 [2018-01-28 22:56:57,169 INFO L226 Difference]: Without dead ends: 252 [2018-01-28 22:56:57,169 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 22:56:57,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-01-28 22:56:57,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 229. [2018-01-28 22:56:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-01-28 22:56:57,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 253 transitions. [2018-01-28 22:56:57,182 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 253 transitions. Word has length 43 [2018-01-28 22:56:57,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:57,182 INFO L432 AbstractCegarLoop]: Abstraction has 229 states and 253 transitions. [2018-01-28 22:56:57,182 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:56:57,182 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 253 transitions. [2018-01-28 22:56:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-01-28 22:56:57,186 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:57,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:56:57,186 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:57,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1097949650, now seen corresponding path program 1 times [2018-01-28 22:56:57,186 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:57,187 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:57,187 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:57,188 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:57,188 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:57,201 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:57,248 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 22:56:57,249 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:57,289 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:56:57,290 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:56:57,290 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:56:57,290 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:56:57,290 INFO L87 Difference]: Start difference. First operand 229 states and 253 transitions. Second operand 5 states. [2018-01-28 22:56:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:57,633 INFO L93 Difference]: Finished difference Result 369 states and 408 transitions. [2018-01-28 22:56:57,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:56:57,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2018-01-28 22:56:57,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:57,635 INFO L225 Difference]: With dead ends: 369 [2018-01-28 22:56:57,636 INFO L226 Difference]: Without dead ends: 368 [2018-01-28 22:56:57,637 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 22:56:57,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2018-01-28 22:56:57,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 228. [2018-01-28 22:56:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-01-28 22:56:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 252 transitions. [2018-01-28 22:56:57,650 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 252 transitions. Word has length 51 [2018-01-28 22:56:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:57,650 INFO L432 AbstractCegarLoop]: Abstraction has 228 states and 252 transitions. [2018-01-28 22:56:57,650 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:56:57,650 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 252 transitions. [2018-01-28 22:56:57,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-01-28 22:56:57,651 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:57,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:56:57,651 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:57,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1097949651, now seen corresponding path program 1 times [2018-01-28 22:56:57,652 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:57,652 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:57,653 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:57,653 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:57,653 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:57,667 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:57,749 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 22:56:57,749 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:57,749 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:56:57,750 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:56:57,750 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:56:57,750 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:56:57,750 INFO L87 Difference]: Start difference. First operand 228 states and 252 transitions. Second operand 5 states. [2018-01-28 22:56:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:58,092 INFO L93 Difference]: Finished difference Result 405 states and 451 transitions. [2018-01-28 22:56:58,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:56:58,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2018-01-28 22:56:58,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:58,095 INFO L225 Difference]: With dead ends: 405 [2018-01-28 22:56:58,095 INFO L226 Difference]: Without dead ends: 404 [2018-01-28 22:56:58,095 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 22:56:58,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2018-01-28 22:56:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 227. [2018-01-28 22:56:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-01-28 22:56:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 251 transitions. [2018-01-28 22:56:58,108 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 251 transitions. Word has length 51 [2018-01-28 22:56:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:58,108 INFO L432 AbstractCegarLoop]: Abstraction has 227 states and 251 transitions. [2018-01-28 22:56:58,108 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:56:58,108 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 251 transitions. [2018-01-28 22:56:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-01-28 22:56:58,109 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:58,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:56:58,109 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:58,110 INFO L82 PathProgramCache]: Analyzing trace with hash 499175845, now seen corresponding path program 1 times [2018-01-28 22:56:58,110 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:58,110 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:58,111 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:58,111 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:58,111 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:58,121 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:58,439 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 22:56:58,440 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:58,440 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-28 22:56:58,440 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-28 22:56:58,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-28 22:56:58,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-01-28 22:56:58,441 INFO L87 Difference]: Start difference. First operand 227 states and 251 transitions. Second operand 10 states. [2018-01-28 22:56:58,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:58,954 INFO L93 Difference]: Finished difference Result 505 states and 552 transitions. [2018-01-28 22:56:58,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-28 22:56:58,955 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2018-01-28 22:56:58,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:58,956 INFO L225 Difference]: With dead ends: 505 [2018-01-28 22:56:58,956 INFO L226 Difference]: Without dead ends: 373 [2018-01-28 22:56:58,957 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-01-28 22:56:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-01-28 22:56:58,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 281. [2018-01-28 22:56:58,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-01-28 22:56:58,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 309 transitions. [2018-01-28 22:56:58,972 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 309 transitions. Word has length 52 [2018-01-28 22:56:58,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:58,972 INFO L432 AbstractCegarLoop]: Abstraction has 281 states and 309 transitions. [2018-01-28 22:56:58,972 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-28 22:56:58,972 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 309 transitions. [2018-01-28 22:56:58,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-01-28 22:56:58,973 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:58,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:56:58,973 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:58,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1452752215, now seen corresponding path program 1 times [2018-01-28 22:56:58,973 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:58,973 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:58,974 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:58,974 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:58,974 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:58,990 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:59,101 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 22:56:59,101 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:59,101 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-28 22:56:59,102 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-28 22:56:59,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-28 22:56:59,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:56:59,102 INFO L87 Difference]: Start difference. First operand 281 states and 309 transitions. Second operand 8 states. [2018-01-28 22:56:59,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:59,368 INFO L93 Difference]: Finished difference Result 312 states and 343 transitions. [2018-01-28 22:56:59,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-28 22:56:59,368 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2018-01-28 22:56:59,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:59,369 INFO L225 Difference]: With dead ends: 312 [2018-01-28 22:56:59,369 INFO L226 Difference]: Without dead ends: 311 [2018-01-28 22:56:59,370 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-28 22:56:59,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-01-28 22:56:59,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 280. [2018-01-28 22:56:59,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2018-01-28 22:56:59,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 308 transitions. [2018-01-28 22:56:59,388 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 308 transitions. Word has length 54 [2018-01-28 22:56:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:59,389 INFO L432 AbstractCegarLoop]: Abstraction has 280 states and 308 transitions. [2018-01-28 22:56:59,389 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-28 22:56:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 308 transitions. [2018-01-28 22:56:59,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-01-28 22:56:59,390 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:59,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:56:59,390 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:59,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1452752214, now seen corresponding path program 1 times [2018-01-28 22:56:59,390 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:59,391 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:59,391 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:59,392 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:59,392 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:56:59,407 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:56:59,587 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 22:56:59,587 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:56:59,587 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-28 22:56:59,587 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-28 22:56:59,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-28 22:56:59,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:56:59,588 INFO L87 Difference]: Start difference. First operand 280 states and 308 transitions. Second operand 8 states. [2018-01-28 22:56:59,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:56:59,975 INFO L93 Difference]: Finished difference Result 311 states and 342 transitions. [2018-01-28 22:56:59,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-28 22:56:59,975 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2018-01-28 22:56:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:56:59,976 INFO L225 Difference]: With dead ends: 311 [2018-01-28 22:56:59,976 INFO L226 Difference]: Without dead ends: 310 [2018-01-28 22:56:59,977 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-01-28 22:56:59,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-01-28 22:56:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 279. [2018-01-28 22:56:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-01-28 22:56:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2018-01-28 22:56:59,988 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 54 [2018-01-28 22:56:59,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:56:59,988 INFO L432 AbstractCegarLoop]: Abstraction has 279 states and 307 transitions. [2018-01-28 22:56:59,988 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-28 22:56:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 307 transitions. [2018-01-28 22:56:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-01-28 22:56:59,989 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:56:59,989 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, 1, 1] [2018-01-28 22:56:59,989 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:56:59,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1752830861, now seen corresponding path program 1 times [2018-01-28 22:56:59,989 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:56:59,989 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:56:59,990 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:59,990 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:56:59,990 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:56:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:00,000 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:00,193 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 22:57:00,194 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:57:00,194 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 22:57:00,208 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:00,243 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:57:00,408 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 22:57:00,419 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 22:57:00,420 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,422 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,456 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 22:57:00,460 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 22:57:00,460 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,462 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,499 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,500 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:29, output treesize:21 [2018-01-28 22:57:00,566 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 22:57:00,572 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:00,575 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 22:57:00,575 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,604 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,657 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 22:57:00,672 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:00,673 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 22:57:00,673 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,694 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,748 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,748 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:47, output treesize:39 [2018-01-28 22:57:00,824 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-01-28 22:57:00,827 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:00,828 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-01-28 22:57:00,828 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,833 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,843 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-01-28 22:57:00,848 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:00,849 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-01-28 22:57:00,849 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,852 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,857 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:00,858 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:53, output treesize:7 [2018-01-28 22:57:00,872 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 22:57:00,900 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:57:00,900 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2018-01-28 22:57:00,901 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-28 22:57:00,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-28 22:57:00,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-01-28 22:57:00,901 INFO L87 Difference]: Start difference. First operand 279 states and 307 transitions. Second operand 11 states. [2018-01-28 22:57:01,699 WARN L143 SmtUtils]: Spent 127ms on a formula simplification that was a NOOP. DAG size: 41 [2018-01-28 22:57:02,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:02,238 INFO L93 Difference]: Finished difference Result 558 states and 600 transitions. [2018-01-28 22:57:02,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-28 22:57:02,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2018-01-28 22:57:02,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:02,240 INFO L225 Difference]: With dead ends: 558 [2018-01-28 22:57:02,240 INFO L226 Difference]: Without dead ends: 451 [2018-01-28 22:57:02,241 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2018-01-28 22:57:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-01-28 22:57:02,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 337. [2018-01-28 22:57:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-01-28 22:57:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 374 transitions. [2018-01-28 22:57:02,299 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 374 transitions. Word has length 55 [2018-01-28 22:57:02,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:02,300 INFO L432 AbstractCegarLoop]: Abstraction has 337 states and 374 transitions. [2018-01-28 22:57:02,300 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-28 22:57:02,300 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 374 transitions. [2018-01-28 22:57:02,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-28 22:57:02,300 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:02,300 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:57:02,300 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:02,301 INFO L82 PathProgramCache]: Analyzing trace with hash -963704105, now seen corresponding path program 1 times [2018-01-28 22:57:02,301 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:02,301 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:02,302 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:02,302 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:02,302 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:02,319 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:02,832 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 22:57:02,832 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:57:02,832 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-01-28 22:57:02,833 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-28 22:57:02,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-28 22:57:02,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2018-01-28 22:57:02,833 INFO L87 Difference]: Start difference. First operand 337 states and 374 transitions. Second operand 17 states. [2018-01-28 22:57:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:04,174 INFO L93 Difference]: Finished difference Result 715 states and 770 transitions. [2018-01-28 22:57:04,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-28 22:57:04,174 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2018-01-28 22:57:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:04,178 INFO L225 Difference]: With dead ends: 715 [2018-01-28 22:57:04,179 INFO L226 Difference]: Without dead ends: 712 [2018-01-28 22:57:04,179 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=423, Invalid=1137, Unknown=0, NotChecked=0, Total=1560 [2018-01-28 22:57:04,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2018-01-28 22:57:04,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 345. [2018-01-28 22:57:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-01-28 22:57:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 381 transitions. [2018-01-28 22:57:04,213 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 381 transitions. Word has length 57 [2018-01-28 22:57:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:04,214 INFO L432 AbstractCegarLoop]: Abstraction has 345 states and 381 transitions. [2018-01-28 22:57:04,214 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-28 22:57:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 381 transitions. [2018-01-28 22:57:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-28 22:57:04,215 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:04,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:57:04,215 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:04,215 INFO L82 PathProgramCache]: Analyzing trace with hash -963704104, now seen corresponding path program 1 times [2018-01-28 22:57:04,216 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:04,216 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:04,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:04,217 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:04,217 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:04,237 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:04,741 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 22:57:04,741 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:57:04,742 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-01-28 22:57:04,742 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-28 22:57:04,742 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-28 22:57:04,742 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2018-01-28 22:57:04,742 INFO L87 Difference]: Start difference. First operand 345 states and 381 transitions. Second operand 17 states. [2018-01-28 22:57:05,766 WARN L146 SmtUtils]: Spent 200ms on a formula simplification. DAG size of input: 53 DAG size of output 51 [2018-01-28 22:57:06,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:06,630 INFO L93 Difference]: Finished difference Result 783 states and 832 transitions. [2018-01-28 22:57:06,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-28 22:57:06,630 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2018-01-28 22:57:06,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:06,634 INFO L225 Difference]: With dead ends: 783 [2018-01-28 22:57:06,634 INFO L226 Difference]: Without dead ends: 780 [2018-01-28 22:57:06,635 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=459, Invalid=1263, Unknown=0, NotChecked=0, Total=1722 [2018-01-28 22:57:06,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-01-28 22:57:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 354. [2018-01-28 22:57:06,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-01-28 22:57:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 389 transitions. [2018-01-28 22:57:06,663 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 389 transitions. Word has length 57 [2018-01-28 22:57:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:06,664 INFO L432 AbstractCegarLoop]: Abstraction has 354 states and 389 transitions. [2018-01-28 22:57:06,664 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-28 22:57:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 389 transitions. [2018-01-28 22:57:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-01-28 22:57:06,665 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:06,665 INFO L330 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:57:06,665 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:06,665 INFO L82 PathProgramCache]: Analyzing trace with hash -881382529, now seen corresponding path program 1 times [2018-01-28 22:57:06,666 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:06,666 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:06,666 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:06,667 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:06,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:06,676 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:06,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-28 22:57:06,783 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:57:06,783 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-28 22:57:06,784 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-28 22:57:06,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-28 22:57:06,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:57:06,784 INFO L87 Difference]: Start difference. First operand 354 states and 389 transitions. Second operand 7 states. [2018-01-28 22:57:07,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:07,053 INFO L93 Difference]: Finished difference Result 431 states and 474 transitions. [2018-01-28 22:57:07,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-28 22:57:07,054 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2018-01-28 22:57:07,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:07,056 INFO L225 Difference]: With dead ends: 431 [2018-01-28 22:57:07,056 INFO L226 Difference]: Without dead ends: 373 [2018-01-28 22:57:07,057 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-01-28 22:57:07,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-01-28 22:57:07,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 368. [2018-01-28 22:57:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-01-28 22:57:07,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 403 transitions. [2018-01-28 22:57:07,080 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 403 transitions. Word has length 64 [2018-01-28 22:57:07,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:07,080 INFO L432 AbstractCegarLoop]: Abstraction has 368 states and 403 transitions. [2018-01-28 22:57:07,080 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-28 22:57:07,080 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 403 transitions. [2018-01-28 22:57:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-28 22:57:07,081 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:07,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:57:07,082 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:07,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1314124087, now seen corresponding path program 1 times [2018-01-28 22:57:07,082 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:07,082 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:07,083 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:07,083 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:07,083 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:07,093 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:57:07,211 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:57:07,211 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 22:57:07,217 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:07,241 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:57:07,255 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 22:57:07,257 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 22:57:07,257 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:07,291 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:07,293 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:07,293 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-01-28 22:57:07,449 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-01-28 22:57:07,464 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 8 [2018-01-28 22:57:07,464 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-01-28 22:57:07,467 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-28 22:57:07,476 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-01-28 22:57:07,478 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:07,479 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:07,483 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2018-01-28 22:57:07,484 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-01-28 22:57:07,493 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-28 22:57:07,503 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-01-28 22:57:07,503 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-01-28 22:57:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:57:07,612 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:57:07,612 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 17 [2018-01-28 22:57:07,613 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-28 22:57:07,613 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-28 22:57:07,613 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=227, Unknown=2, NotChecked=0, Total=272 [2018-01-28 22:57:07,613 INFO L87 Difference]: Start difference. First operand 368 states and 403 transitions. Second operand 17 states. [2018-01-28 22:57:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:08,960 INFO L93 Difference]: Finished difference Result 739 states and 780 transitions. [2018-01-28 22:57:08,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-28 22:57:08,960 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2018-01-28 22:57:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:08,962 INFO L225 Difference]: With dead ends: 739 [2018-01-28 22:57:08,962 INFO L226 Difference]: Without dead ends: 700 [2018-01-28 22:57:08,963 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=284, Invalid=1349, Unknown=7, NotChecked=0, Total=1640 [2018-01-28 22:57:08,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2018-01-28 22:57:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 401. [2018-01-28 22:57:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-01-28 22:57:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 443 transitions. [2018-01-28 22:57:08,991 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 443 transitions. Word has length 67 [2018-01-28 22:57:08,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:08,991 INFO L432 AbstractCegarLoop]: Abstraction has 401 states and 443 transitions. [2018-01-28 22:57:08,991 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-28 22:57:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 443 transitions. [2018-01-28 22:57:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-01-28 22:57:08,992 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:08,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:57:08,992 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:08,993 INFO L82 PathProgramCache]: Analyzing trace with hash -2083139647, now seen corresponding path program 1 times [2018-01-28 22:57:08,993 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:08,993 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:08,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:08,994 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:08,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:09,006 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-28 22:57:09,094 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:57:09,094 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 22:57:09,102 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:09,134 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:57:09,217 WARN L1033 $PredicateComparison]: unable to prove that (exists ((main_~list~5.base Int)) (and (= 0 (select |c_old(#valid)| main_~list~5.base)) (= |c_#valid| (store |c_old(#valid)| main_~list~5.base 0)) (not (= 0 main_~list~5.base)))) is different from true [2018-01-28 22:57:09,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2018-01-28 22:57:09,270 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:57:09,270 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 9 [2018-01-28 22:57:09,270 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-28 22:57:09,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-28 22:57:09,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=55, Unknown=1, NotChecked=14, Total=90 [2018-01-28 22:57:09,271 INFO L87 Difference]: Start difference. First operand 401 states and 443 transitions. Second operand 10 states. [2018-01-28 22:57:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:09,557 INFO L93 Difference]: Finished difference Result 452 states and 494 transitions. [2018-01-28 22:57:09,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-28 22:57:09,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2018-01-28 22:57:09,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:09,558 INFO L225 Difference]: With dead ends: 452 [2018-01-28 22:57:09,558 INFO L226 Difference]: Without dead ends: 414 [2018-01-28 22:57:09,559 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=134, Unknown=1, NotChecked=24, Total=210 [2018-01-28 22:57:09,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2018-01-28 22:57:09,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 412. [2018-01-28 22:57:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-01-28 22:57:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 454 transitions. [2018-01-28 22:57:09,587 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 454 transitions. Word has length 68 [2018-01-28 22:57:09,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:09,587 INFO L432 AbstractCegarLoop]: Abstraction has 412 states and 454 transitions. [2018-01-28 22:57:09,588 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-28 22:57:09,588 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 454 transitions. [2018-01-28 22:57:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-01-28 22:57:09,589 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:09,589 INFO L330 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:57:09,589 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:09,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1901013425, now seen corresponding path program 1 times [2018-01-28 22:57:09,590 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:09,590 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:09,590 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:09,591 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:09,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:09,604 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-28 22:57:09,907 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:57:09,907 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-01-28 22:57:09,907 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-28 22:57:09,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-28 22:57:09,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-01-28 22:57:09,908 INFO L87 Difference]: Start difference. First operand 412 states and 454 transitions. Second operand 16 states. [2018-01-28 22:57:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:10,959 INFO L93 Difference]: Finished difference Result 688 states and 745 transitions. [2018-01-28 22:57:10,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-28 22:57:10,960 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2018-01-28 22:57:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:10,962 INFO L225 Difference]: With dead ends: 688 [2018-01-28 22:57:10,962 INFO L226 Difference]: Without dead ends: 687 [2018-01-28 22:57:10,962 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2018-01-28 22:57:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2018-01-28 22:57:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 423. [2018-01-28 22:57:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-01-28 22:57:10,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 467 transitions. [2018-01-28 22:57:10,984 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 467 transitions. Word has length 69 [2018-01-28 22:57:10,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:10,984 INFO L432 AbstractCegarLoop]: Abstraction has 423 states and 467 transitions. [2018-01-28 22:57:10,984 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-28 22:57:10,984 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 467 transitions. [2018-01-28 22:57:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-01-28 22:57:10,985 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:10,985 INFO L330 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:57:10,985 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:10,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1901013426, now seen corresponding path program 1 times [2018-01-28 22:57:10,985 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:10,985 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:10,986 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:10,986 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:10,986 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:10,998 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-28 22:57:11,526 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:57:11,526 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-01-28 22:57:11,526 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-28 22:57:11,526 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-28 22:57:11,526 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2018-01-28 22:57:11,527 INFO L87 Difference]: Start difference. First operand 423 states and 467 transitions. Second operand 17 states. [2018-01-28 22:57:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:12,470 INFO L93 Difference]: Finished difference Result 686 states and 743 transitions. [2018-01-28 22:57:12,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-28 22:57:12,501 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 69 [2018-01-28 22:57:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:12,503 INFO L225 Difference]: With dead ends: 686 [2018-01-28 22:57:12,503 INFO L226 Difference]: Without dead ends: 683 [2018-01-28 22:57:12,503 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=361, Invalid=1045, Unknown=0, NotChecked=0, Total=1406 [2018-01-28 22:57:12,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-01-28 22:57:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 432. [2018-01-28 22:57:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-01-28 22:57:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 475 transitions. [2018-01-28 22:57:12,534 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 475 transitions. Word has length 69 [2018-01-28 22:57:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:12,535 INFO L432 AbstractCegarLoop]: Abstraction has 432 states and 475 transitions. [2018-01-28 22:57:12,535 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-28 22:57:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 475 transitions. [2018-01-28 22:57:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-01-28 22:57:12,536 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:12,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:57:12,537 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:12,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1681876211, now seen corresponding path program 1 times [2018-01-28 22:57:12,537 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:12,537 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:12,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:12,538 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:12,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:12,550 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-28 22:57:12,646 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:57:12,647 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-28 22:57:12,647 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-28 22:57:12,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-28 22:57:12,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:57:12,648 INFO L87 Difference]: Start difference. First operand 432 states and 475 transitions. Second operand 7 states. [2018-01-28 22:57:12,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:12,843 INFO L93 Difference]: Finished difference Result 458 states and 496 transitions. [2018-01-28 22:57:12,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-28 22:57:12,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2018-01-28 22:57:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:12,845 INFO L225 Difference]: With dead ends: 458 [2018-01-28 22:57:12,845 INFO L226 Difference]: Without dead ends: 448 [2018-01-28 22:57:12,845 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-01-28 22:57:12,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2018-01-28 22:57:12,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 432. [2018-01-28 22:57:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2018-01-28 22:57:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 474 transitions. [2018-01-28 22:57:12,864 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 474 transitions. Word has length 73 [2018-01-28 22:57:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:12,864 INFO L432 AbstractCegarLoop]: Abstraction has 432 states and 474 transitions. [2018-01-28 22:57:12,864 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-28 22:57:12,864 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 474 transitions. [2018-01-28 22:57:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-01-28 22:57:12,865 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:12,865 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:57:12,865 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:12,865 INFO L82 PathProgramCache]: Analyzing trace with hash 992055160, now seen corresponding path program 1 times [2018-01-28 22:57:12,865 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:12,865 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:12,866 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:12,866 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:12,866 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:12,875 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:13,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-28 22:57:13,137 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:57:13,137 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-28 22:57:13,137 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-28 22:57:13,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-28 22:57:13,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-01-28 22:57:13,138 INFO L87 Difference]: Start difference. First operand 432 states and 474 transitions. Second operand 11 states. [2018-01-28 22:57:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:13,603 INFO L93 Difference]: Finished difference Result 887 states and 974 transitions. [2018-01-28 22:57:13,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-28 22:57:13,603 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2018-01-28 22:57:13,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:13,605 INFO L225 Difference]: With dead ends: 887 [2018-01-28 22:57:13,605 INFO L226 Difference]: Without dead ends: 588 [2018-01-28 22:57:13,606 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2018-01-28 22:57:13,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2018-01-28 22:57:13,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 393. [2018-01-28 22:57:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-01-28 22:57:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 433 transitions. [2018-01-28 22:57:13,622 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 433 transitions. Word has length 75 [2018-01-28 22:57:13,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:13,623 INFO L432 AbstractCegarLoop]: Abstraction has 393 states and 433 transitions. [2018-01-28 22:57:13,623 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-28 22:57:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 433 transitions. [2018-01-28 22:57:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-01-28 22:57:13,623 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:13,623 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:13,624 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:13,624 INFO L82 PathProgramCache]: Analyzing trace with hash 776683596, now seen corresponding path program 1 times [2018-01-28 22:57:13,624 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:13,624 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:13,624 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:13,625 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:13,625 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:13,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:57:13,658 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:57:13,658 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 22:57:13,658 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-28 22:57:13,658 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-28 22:57:13,658 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-28 22:57:13,658 INFO L87 Difference]: Start difference. First operand 393 states and 433 transitions. Second operand 3 states. [2018-01-28 22:57:13,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:13,718 INFO L93 Difference]: Finished difference Result 823 states and 923 transitions. [2018-01-28 22:57:13,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-28 22:57:13,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2018-01-28 22:57:13,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:13,721 INFO L225 Difference]: With dead ends: 823 [2018-01-28 22:57:13,721 INFO L226 Difference]: Without dead ends: 611 [2018-01-28 22:57:13,722 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-28 22:57:13,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2018-01-28 22:57:13,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 464. [2018-01-28 22:57:13,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2018-01-28 22:57:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 519 transitions. [2018-01-28 22:57:13,754 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 519 transitions. Word has length 77 [2018-01-28 22:57:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:13,754 INFO L432 AbstractCegarLoop]: Abstraction has 464 states and 519 transitions. [2018-01-28 22:57:13,754 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-28 22:57:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 519 transitions. [2018-01-28 22:57:13,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-01-28 22:57:13,756 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:13,756 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:13,756 INFO L371 AbstractCegarLoop]: === Iteration 29 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:13,756 INFO L82 PathProgramCache]: Analyzing trace with hash -769885204, now seen corresponding path program 1 times [2018-01-28 22:57:13,756 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:13,756 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:13,757 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:13,757 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:13,757 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:13,767 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:57:13,859 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:57:13,859 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 22:57:13,859 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 22:57:13,860 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 22:57:13,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:57:13,860 INFO L87 Difference]: Start difference. First operand 464 states and 519 transitions. Second operand 6 states. [2018-01-28 22:57:13,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:13,980 INFO L93 Difference]: Finished difference Result 703 states and 796 transitions. [2018-01-28 22:57:13,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-28 22:57:13,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2018-01-28 22:57:13,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:13,983 INFO L225 Difference]: With dead ends: 703 [2018-01-28 22:57:13,983 INFO L226 Difference]: Without dead ends: 434 [2018-01-28 22:57:13,984 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-01-28 22:57:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-01-28 22:57:14,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 378. [2018-01-28 22:57:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-01-28 22:57:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 412 transitions. [2018-01-28 22:57:14,011 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 412 transitions. Word has length 77 [2018-01-28 22:57:14,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:14,011 INFO L432 AbstractCegarLoop]: Abstraction has 378 states and 412 transitions. [2018-01-28 22:57:14,011 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 22:57:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 412 transitions. [2018-01-28 22:57:14,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-28 22:57:14,012 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:14,012 INFO L330 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:14,013 INFO L371 AbstractCegarLoop]: === Iteration 30 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:14,013 INFO L82 PathProgramCache]: Analyzing trace with hash 499885585, now seen corresponding path program 1 times [2018-01-28 22:57:14,013 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:14,013 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:14,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:14,014 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:14,014 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:14,025 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-28 22:57:14,214 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:57:14,214 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-28 22:57:14,214 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-28 22:57:14,214 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-28 22:57:14,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-01-28 22:57:14,215 INFO L87 Difference]: Start difference. First operand 378 states and 412 transitions. Second operand 10 states. [2018-01-28 22:57:14,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:14,561 INFO L93 Difference]: Finished difference Result 572 states and 625 transitions. [2018-01-28 22:57:14,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-28 22:57:14,561 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2018-01-28 22:57:14,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:14,563 INFO L225 Difference]: With dead ends: 572 [2018-01-28 22:57:14,563 INFO L226 Difference]: Without dead ends: 571 [2018-01-28 22:57:14,564 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2018-01-28 22:57:14,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2018-01-28 22:57:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 379. [2018-01-28 22:57:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-01-28 22:57:14,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 413 transitions. [2018-01-28 22:57:14,582 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 413 transitions. Word has length 80 [2018-01-28 22:57:14,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:14,583 INFO L432 AbstractCegarLoop]: Abstraction has 379 states and 413 transitions. [2018-01-28 22:57:14,583 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-28 22:57:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 413 transitions. [2018-01-28 22:57:14,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-01-28 22:57:14,583 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:14,583 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:14,583 INFO L371 AbstractCegarLoop]: === Iteration 31 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:14,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1424772722, now seen corresponding path program 1 times [2018-01-28 22:57:14,584 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:14,584 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:14,584 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:14,584 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:14,585 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:14,590 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:14,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-28 22:57:14,647 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:57:14,647 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 22:57:14,647 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:57:14,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:57:14,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:57:14,648 INFO L87 Difference]: Start difference. First operand 379 states and 413 transitions. Second operand 5 states. [2018-01-28 22:57:14,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:14,789 INFO L93 Difference]: Finished difference Result 639 states and 703 transitions. [2018-01-28 22:57:14,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:57:14,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2018-01-28 22:57:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:14,790 INFO L225 Difference]: With dead ends: 639 [2018-01-28 22:57:14,790 INFO L226 Difference]: Without dead ends: 400 [2018-01-28 22:57:14,791 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 22:57:14,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2018-01-28 22:57:14,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 383. [2018-01-28 22:57:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-01-28 22:57:14,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 416 transitions. [2018-01-28 22:57:14,809 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 416 transitions. Word has length 84 [2018-01-28 22:57:14,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:14,809 INFO L432 AbstractCegarLoop]: Abstraction has 383 states and 416 transitions. [2018-01-28 22:57:14,809 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:57:14,809 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 416 transitions. [2018-01-28 22:57:14,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-01-28 22:57:14,810 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:14,810 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:14,810 INFO L371 AbstractCegarLoop]: === Iteration 32 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:14,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1392020685, now seen corresponding path program 1 times [2018-01-28 22:57:14,810 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:14,810 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:14,811 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:14,811 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:14,811 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:14,819 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:57:15,457 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:57:15,457 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 22:57:15,476 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:15,518 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:57:15,600 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:15,601 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:15,602 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 17 treesize of output 21 [2018-01-28 22:57:15,602 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:15,622 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:15,623 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:21 [2018-01-28 22:57:15,677 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 22:57:15,679 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 8 treesize of output 7 [2018-01-28 22:57:15,680 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:15,682 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:15,696 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 22:57:15,696 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:29 [2018-01-28 22:57:15,817 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:15,821 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 36 treesize of output 37 [2018-01-28 22:57:15,824 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 22:57:15,825 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:15,839 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:15,849 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:15,849 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:41, output treesize:37 [2018-01-28 22:57:15,887 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 50 treesize of output 40 [2018-01-28 22:57:15,890 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:15,891 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 20 treesize of output 31 [2018-01-28 22:57:15,892 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:15,901 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:15,928 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 22:57:15,928 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:55, output treesize:47 [2018-01-28 22:57:16,048 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 31 [2018-01-28 22:57:16,052 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:16,052 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 13 treesize of output 6 [2018-01-28 22:57:16,052 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:16,061 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 19 treesize of output 10 [2018-01-28 22:57:16,062 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:16,074 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:16,079 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 22:57:16,080 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:54, output treesize:15 [2018-01-28 22:57:16,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:57:16,217 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:57:16,218 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2018-01-28 22:57:16,218 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-28 22:57:16,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-28 22:57:16,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2018-01-28 22:57:16,219 INFO L87 Difference]: Start difference. First operand 383 states and 416 transitions. Second operand 23 states. [2018-01-28 22:57:17,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:17,271 INFO L93 Difference]: Finished difference Result 593 states and 636 transitions. [2018-01-28 22:57:17,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-28 22:57:17,272 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-01-28 22:57:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:17,274 INFO L225 Difference]: With dead ends: 593 [2018-01-28 22:57:17,274 INFO L226 Difference]: Without dead ends: 592 [2018-01-28 22:57:17,274 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2018-01-28 22:57:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2018-01-28 22:57:17,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 459. [2018-01-28 22:57:17,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-01-28 22:57:17,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 502 transitions. [2018-01-28 22:57:17,302 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 502 transitions. Word has length 86 [2018-01-28 22:57:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:17,302 INFO L432 AbstractCegarLoop]: Abstraction has 459 states and 502 transitions. [2018-01-28 22:57:17,302 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-28 22:57:17,303 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 502 transitions. [2018-01-28 22:57:17,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-01-28 22:57:17,303 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:17,303 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:17,303 INFO L371 AbstractCegarLoop]: === Iteration 33 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:17,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1392020684, now seen corresponding path program 1 times [2018-01-28 22:57:17,304 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:17,304 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:17,304 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:17,304 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:17,305 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:17,313 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:57:17,532 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:57:17,565 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 22:57:17,570 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:17,593 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:57:17,602 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 6 treesize of output 5 [2018-01-28 22:57:17,602 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,611 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:17,611 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:17,614 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 22:57:17,614 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,620 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,620 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2018-01-28 22:57:17,626 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 22:57:17,628 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 8 treesize of output 7 [2018-01-28 22:57:17,628 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,629 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,637 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 22:57:17,639 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 22:57:17,639 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,640 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,646 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 22:57:17,646 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:38, output treesize:31 [2018-01-28 22:57:17,693 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:17,696 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 36 treesize of output 37 [2018-01-28 22:57:17,698 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 22:57:17,698 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,704 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,713 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:17,715 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 19 treesize of output 24 [2018-01-28 22:57:17,717 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 12 treesize of output 11 [2018-01-28 22:57:17,717 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,721 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,727 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,728 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:54, output treesize:50 [2018-01-28 22:57:17,759 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 40 treesize of output 35 [2018-01-28 22:57:17,762 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:17,762 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 20 treesize of output 31 [2018-01-28 22:57:17,763 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,769 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,783 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 74 treesize of output 64 [2018-01-28 22:57:17,786 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:17,787 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 20 treesize of output 31 [2018-01-28 22:57:17,787 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,796 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,806 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 22:57:17,806 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:89, output treesize:73 [2018-01-28 22:57:17,916 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 51 [2018-01-28 22:57:17,919 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 39 treesize of output 26 [2018-01-28 22:57:17,919 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,929 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:17,929 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 13 treesize of output 6 [2018-01-28 22:57:17,929 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,936 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,948 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2018-01-28 22:57:17,950 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:57:17,950 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 13 treesize of output 6 [2018-01-28 22:57:17,950 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,955 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-01-28 22:57:17,955 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,956 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,959 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:57:17,959 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:87, output treesize:9 [2018-01-28 22:57:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:57:18,023 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:57:18,023 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2018-01-28 22:57:18,024 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-28 22:57:18,024 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-28 22:57:18,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2018-01-28 22:57:18,024 INFO L87 Difference]: Start difference. First operand 459 states and 502 transitions. Second operand 19 states. [2018-01-28 22:57:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:57:18,934 INFO L93 Difference]: Finished difference Result 618 states and 663 transitions. [2018-01-28 22:57:18,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-01-28 22:57:18,934 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2018-01-28 22:57:18,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:57:18,936 INFO L225 Difference]: With dead ends: 618 [2018-01-28 22:57:18,936 INFO L226 Difference]: Without dead ends: 616 [2018-01-28 22:57:18,936 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=205, Invalid=917, Unknown=0, NotChecked=0, Total=1122 [2018-01-28 22:57:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2018-01-28 22:57:18,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 488. [2018-01-28 22:57:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-01-28 22:57:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 536 transitions. [2018-01-28 22:57:18,962 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 536 transitions. Word has length 86 [2018-01-28 22:57:18,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:57:18,962 INFO L432 AbstractCegarLoop]: Abstraction has 488 states and 536 transitions. [2018-01-28 22:57:18,962 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-28 22:57:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 536 transitions. [2018-01-28 22:57:18,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-01-28 22:57:18,962 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:57:18,963 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, 1, 1, 1, 1, 1, 1, 1, 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 22:57:18,963 INFO L371 AbstractCegarLoop]: === Iteration 34 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr62EnsuresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-28 22:57:18,963 INFO L82 PathProgramCache]: Analyzing trace with hash 965526734, now seen corresponding path program 1 times [2018-01-28 22:57:18,963 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:57:18,963 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:57:18,964 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:18,964 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:57:18,964 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:57:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:57:18,982 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:57:19,208 ERROR L119 erpolLogProxyWrapper]: Could not assert interpolant [2018-01-28 22:57:19,209 ERROR L119 erpolLogProxyWrapper]: Interpolant 32 not inductive: (Check returned sat) [2018-01-28 22:57:19,210 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 22:57:19,214 INFO L168 Benchmark]: Toolchain (without parser) took 28321.38 ms. Allocated memory was 302.5 MB in the beginning and 1.1 GB in the end (delta: 796.9 MB). Free memory was 261.6 MB in the beginning and 375.3 MB in the end (delta: -113.8 MB). Peak memory consumption was 683.2 MB. Max. memory is 5.3 GB. [2018-01-28 22:57:19,216 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 302.5 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 22:57:19,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.15 ms. Allocated memory is still 302.5 MB. Free memory was 261.6 MB in the beginning and 247.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:57:19,216 INFO L168 Benchmark]: Boogie Preprocessor took 44.63 ms. Allocated memory is still 302.5 MB. Free memory was 247.5 MB in the beginning and 245.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:57:19,217 INFO L168 Benchmark]: RCFGBuilder took 694.10 ms. Allocated memory is still 302.5 MB. Free memory was 245.5 MB in the beginning and 198.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 5.3 GB. [2018-01-28 22:57:19,217 INFO L168 Benchmark]: TraceAbstraction took 27328.94 ms. Allocated memory was 302.5 MB in the beginning and 1.1 GB in the end (delta: 796.9 MB). Free memory was 198.6 MB in the beginning and 375.3 MB in the end (delta: -176.7 MB). Peak memory consumption was 620.2 MB. Max. memory is 5.3 GB. [2018-01-28 22:57:19,219 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 302.5 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 246.15 ms. Allocated memory is still 302.5 MB. Free memory was 261.6 MB in the beginning and 247.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 44.63 ms. Allocated memory is still 302.5 MB. Free memory was 247.5 MB in the beginning and 245.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 694.10 ms. Allocated memory is still 302.5 MB. Free memory was 245.5 MB in the beginning and 198.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 27328.94 ms. Allocated memory was 302.5 MB in the beginning and 1.1 GB in the end (delta: 796.9 MB). Free memory was 198.6 MB in the beginning and 375.3 MB in the end (delta: -176.7 MB). Peak memory consumption was 620.2 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/sll-01_true-unreach-call_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-28_22-57-19-228.csv Received shutdown request...