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_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/memsafety/lockfree-3.1_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 02:54:51,892 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 02:54:51,894 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 02:54:51,945 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 02:54:51,945 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 02:54:51,946 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 02:54:51,947 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 02:54:51,949 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 02:54:51,951 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 02:54:51,952 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 02:54:51,963 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 02:54:51,964 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 02:54:51,965 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 02:54:51,966 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 02:54:51,977 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 02:54:51,980 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 02:54:51,982 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 02:54:51,984 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 02:54:51,985 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 02:54:51,986 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 02:54:51,988 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 02:54:51,989 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 02:54:51,989 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 02:54:51,990 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 02:54:51,991 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 02:54:51,992 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 02:54:51,992 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 02:54:51,993 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 02:54:51,993 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 02:54:51,993 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 02:54:51,994 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 02:54:51,994 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-25 02:54:52,005 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 02:54:52,005 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 02:54:52,006 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 02:54:52,006 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 02:54:52,006 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 02:54:52,006 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 02:54:52,007 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 02:54:52,007 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 02:54:52,007 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 02:54:52,008 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 02:54:52,013 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 02:54:52,013 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 02:54:52,013 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 02:54:52,014 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 02:54:52,014 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 02:54:52,014 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 02:54:52,014 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 02:54:52,014 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 02:54:52,015 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 02:54:52,015 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 02:54:52,015 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 02:54:52,015 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 02:54:52,015 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 02:54:52,016 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 02:54:52,016 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 02:54:52,016 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 02:54:52,016 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 02:54:52,016 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 02:54:52,017 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 02:54:52,017 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 02:54:52,027 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 02:54:52,027 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 02:54:52,028 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 02:54:52,028 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 02:54:52,028 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 02:54:52,029 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 02:54:52,029 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 02:54:52,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 02:54:52,125 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 02:54:52,132 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 02:54:52,134 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 02:54:52,135 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 02:54:52,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/lockfree-3.1_false-valid-memtrack.i [2018-01-25 02:54:52,357 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 02:54:52,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 02:54:52,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 02:54:52,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 02:54:52,379 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 02:54:52,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 02:54:52" (1/1) ... [2018-01-25 02:54:52,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28805b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:54:52, skipping insertion in model container [2018-01-25 02:54:52,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 02:54:52" (1/1) ... [2018-01-25 02:54:52,408 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 02:54:52,467 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 02:54:52,626 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 02:54:52,656 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 02:54:52,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:54:52 WrapperNode [2018-01-25 02:54:52,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 02:54:52,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 02:54:52,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 02:54:52,671 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 02:54:52,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:54:52" (1/1) ... [2018-01-25 02:54:52,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:54:52" (1/1) ... [2018-01-25 02:54:52,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:54:52" (1/1) ... [2018-01-25 02:54:52,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:54:52" (1/1) ... [2018-01-25 02:54:52,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:54:52" (1/1) ... [2018-01-25 02:54:52,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:54:52" (1/1) ... [2018-01-25 02:54:52,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:54:52" (1/1) ... [2018-01-25 02:54:52,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 02:54:52,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 02:54:52,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 02:54:52,725 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 02:54:52,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:54:52" (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 [2018-01-25 02:54:52,792 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 02:54:52,792 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 02:54:52,792 INFO L136 BoogieDeclarations]: Found implementation of procedure push [2018-01-25 02:54:52,792 INFO L136 BoogieDeclarations]: Found implementation of procedure pop [2018-01-25 02:54:52,793 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 02:54:52,793 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 02:54:52,793 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 02:54:52,793 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 02:54:52,793 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 02:54:52,793 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 02:54:52,794 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 02:54:52,794 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 02:54:52,794 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 02:54:52,794 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 02:54:52,794 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 02:54:52,794 INFO L128 BoogieDeclarations]: Found specification of procedure push [2018-01-25 02:54:52,795 INFO L128 BoogieDeclarations]: Found specification of procedure pop [2018-01-25 02:54:52,795 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 02:54:52,795 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 02:54:52,795 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 02:54:53,300 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 02:54:53,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 02:54:53 BoogieIcfgContainer [2018-01-25 02:54:53,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 02:54:53,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 02:54:53,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 02:54:53,303 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 02:54:53,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 02:54:52" (1/3) ... [2018-01-25 02:54:53,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92fb3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 02:54:53, skipping insertion in model container [2018-01-25 02:54:53,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 02:54:52" (2/3) ... [2018-01-25 02:54:53,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92fb3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 02:54:53, skipping insertion in model container [2018-01-25 02:54:53,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 02:54:53" (3/3) ... [2018-01-25 02:54:53,308 INFO L105 eAbstractionObserver]: Analyzing ICFG lockfree-3.1_false-valid-memtrack.i [2018-01-25 02:54:53,319 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 02:54:53,328 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-25 02:54:53,376 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 02:54:53,376 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 02:54:53,376 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 02:54:53,376 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 02:54:53,377 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 02:54:53,377 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 02:54:53,377 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 02:54:53,377 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 02:54:53,377 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 02:54:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2018-01-25 02:54:53,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-25 02:54:53,405 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:54:53,406 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:54:53,407 INFO L371 AbstractCegarLoop]: === Iteration 1 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-01-25 02:54:53,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1799126466, now seen corresponding path program 1 times [2018-01-25 02:54:53,416 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:54:53,482 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:53,482 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:54:53,482 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:53,483 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:54:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:54:53,575 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:54:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:54:53,650 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:54:53,651 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 02:54:53,653 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:54:53,671 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-25 02:54:53,698 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-25 02:54:53,699 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-25 02:54:53,703 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 2 states. [2018-01-25 02:54:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:54:53,868 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2018-01-25 02:54:53,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-25 02:54:53,870 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-01-25 02:54:53,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:54:53,883 INFO L225 Difference]: With dead ends: 92 [2018-01-25 02:54:53,883 INFO L226 Difference]: Without dead ends: 73 [2018-01-25 02:54:53,886 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-25 02:54:53,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-25 02:54:53,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-01-25 02:54:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-25 02:54:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2018-01-25 02:54:53,927 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 9 [2018-01-25 02:54:53,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:54:53,928 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2018-01-25 02:54:53,928 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-25 02:54:53,928 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2018-01-25 02:54:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-25 02:54:53,929 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:54:53,929 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:54:53,929 INFO L371 AbstractCegarLoop]: === Iteration 2 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-01-25 02:54:53,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1199640283, now seen corresponding path program 1 times [2018-01-25 02:54:53,930 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:54:53,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:53,931 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:54:53,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:53,932 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:54:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:54:53,958 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:54:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:54:54,076 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:54:54,076 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 02:54:54,076 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:54:54,078 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 02:54:54,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 02:54:54,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 02:54:54,079 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand 3 states. [2018-01-25 02:54:54,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:54:54,219 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2018-01-25 02:54:54,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 02:54:54,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-01-25 02:54:54,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:54:54,230 INFO L225 Difference]: With dead ends: 87 [2018-01-25 02:54:54,230 INFO L226 Difference]: Without dead ends: 74 [2018-01-25 02:54:54,233 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 02:54:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-01-25 02:54:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-01-25 02:54:54,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-25 02:54:54,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2018-01-25 02:54:54,248 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 12 [2018-01-25 02:54:54,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:54:54,249 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2018-01-25 02:54:54,249 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 02:54:54,249 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2018-01-25 02:54:54,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-25 02:54:54,252 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:54:54,253 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:54:54,259 INFO L371 AbstractCegarLoop]: === Iteration 3 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-01-25 02:54:54,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1201487325, now seen corresponding path program 1 times [2018-01-25 02:54:54,262 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:54:54,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:54,264 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:54:54,264 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:54,264 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:54:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:54:54,342 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:54:54,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:54:54,568 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:54:54,568 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 02:54:54,569 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:54:54,569 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 02:54:54,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 02:54:54,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 02:54:54,581 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand 3 states. [2018-01-25 02:54:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:54:54,704 INFO L93 Difference]: Finished difference Result 145 states and 181 transitions. [2018-01-25 02:54:54,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 02:54:54,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-01-25 02:54:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:54:54,710 INFO L225 Difference]: With dead ends: 145 [2018-01-25 02:54:54,710 INFO L226 Difference]: Without dead ends: 132 [2018-01-25 02:54:54,711 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 02:54:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-01-25 02:54:54,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 114. [2018-01-25 02:54:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-01-25 02:54:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 159 transitions. [2018-01-25 02:54:54,743 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 159 transitions. Word has length 12 [2018-01-25 02:54:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:54:54,743 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 159 transitions. [2018-01-25 02:54:54,744 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 02:54:54,744 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 159 transitions. [2018-01-25 02:54:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-25 02:54:54,745 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:54:54,745 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:54:54,745 INFO L371 AbstractCegarLoop]: === Iteration 4 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-01-25 02:54:54,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1408600152, now seen corresponding path program 1 times [2018-01-25 02:54:54,745 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:54:54,746 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:54,747 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:54:54,747 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:54,747 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:54:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:54:54,774 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:54:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:54:54,848 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:54:54,848 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 02:54:54,848 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:54:54,849 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 02:54:54,849 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 02:54:54,849 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 02:54:54,850 INFO L87 Difference]: Start difference. First operand 114 states and 159 transitions. Second operand 3 states. [2018-01-25 02:54:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:54:54,973 INFO L93 Difference]: Finished difference Result 148 states and 206 transitions. [2018-01-25 02:54:54,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 02:54:54,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-01-25 02:54:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:54:54,977 INFO L225 Difference]: With dead ends: 148 [2018-01-25 02:54:54,977 INFO L226 Difference]: Without dead ends: 143 [2018-01-25 02:54:54,978 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 02:54:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-25 02:54:54,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 135. [2018-01-25 02:54:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-01-25 02:54:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 192 transitions. [2018-01-25 02:54:54,999 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 192 transitions. Word has length 13 [2018-01-25 02:54:54,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:54:54,999 INFO L432 AbstractCegarLoop]: Abstraction has 135 states and 192 transitions. [2018-01-25 02:54:54,999 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 02:54:54,999 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 192 transitions. [2018-01-25 02:54:55,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 02:54:55,000 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:54:55,000 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:54:55,000 INFO L371 AbstractCegarLoop]: === Iteration 5 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-01-25 02:54:55,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1628464921, now seen corresponding path program 1 times [2018-01-25 02:54:55,001 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:54:55,001 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:55,002 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:54:55,002 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:55,002 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:54:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:54:55,030 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:54:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:54:55,104 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:54:55,104 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 02:54:55,104 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:54:55,104 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 02:54:55,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 02:54:55,104 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 02:54:55,104 INFO L87 Difference]: Start difference. First operand 135 states and 192 transitions. Second operand 5 states. [2018-01-25 02:54:55,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:54:55,495 INFO L93 Difference]: Finished difference Result 385 states and 558 transitions. [2018-01-25 02:54:55,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 02:54:55,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-01-25 02:54:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:54:55,498 INFO L225 Difference]: With dead ends: 385 [2018-01-25 02:54:55,498 INFO L226 Difference]: Without dead ends: 255 [2018-01-25 02:54:55,500 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-25 02:54:55,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-01-25 02:54:55,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 226. [2018-01-25 02:54:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-01-25 02:54:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 338 transitions. [2018-01-25 02:54:55,532 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 338 transitions. Word has length 15 [2018-01-25 02:54:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:54:55,532 INFO L432 AbstractCegarLoop]: Abstraction has 226 states and 338 transitions. [2018-01-25 02:54:55,532 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 02:54:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 338 transitions. [2018-01-25 02:54:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 02:54:55,533 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:54:55,534 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:54:55,534 INFO L371 AbstractCegarLoop]: === Iteration 6 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-01-25 02:54:55,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1057474006, now seen corresponding path program 1 times [2018-01-25 02:54:55,534 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:54:55,535 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:55,536 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:54:55,536 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:55,536 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:54:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:54:55,549 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:54:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:54:55,595 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:54:55,595 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 02:54:55,595 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:54:55,595 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 02:54:55,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 02:54:55,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 02:54:55,596 INFO L87 Difference]: Start difference. First operand 226 states and 338 transitions. Second operand 4 states. [2018-01-25 02:54:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:54:55,770 INFO L93 Difference]: Finished difference Result 390 states and 581 transitions. [2018-01-25 02:54:55,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 02:54:55,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 02:54:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:54:55,775 INFO L225 Difference]: With dead ends: 390 [2018-01-25 02:54:55,775 INFO L226 Difference]: Without dead ends: 386 [2018-01-25 02:54:55,776 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 02:54:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2018-01-25 02:54:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 358. [2018-01-25 02:54:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-01-25 02:54:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 548 transitions. [2018-01-25 02:54:55,820 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 548 transitions. Word has length 16 [2018-01-25 02:54:55,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:54:55,820 INFO L432 AbstractCegarLoop]: Abstraction has 358 states and 548 transitions. [2018-01-25 02:54:55,820 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 02:54:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 548 transitions. [2018-01-25 02:54:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 02:54:55,821 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:54:55,821 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:54:55,822 INFO L371 AbstractCegarLoop]: === Iteration 7 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-01-25 02:54:55,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1057474005, now seen corresponding path program 1 times [2018-01-25 02:54:55,822 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:54:55,823 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:55,823 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:54:55,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:55,824 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:54:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:54:55,843 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:54:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:54:55,908 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:54:55,908 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 02:54:55,908 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:54:55,908 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 02:54:55,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 02:54:55,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 02:54:55,909 INFO L87 Difference]: Start difference. First operand 358 states and 548 transitions. Second operand 4 states. [2018-01-25 02:54:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:54:56,414 INFO L93 Difference]: Finished difference Result 489 states and 728 transitions. [2018-01-25 02:54:56,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 02:54:56,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 02:54:56,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:54:56,424 INFO L225 Difference]: With dead ends: 489 [2018-01-25 02:54:56,424 INFO L226 Difference]: Without dead ends: 485 [2018-01-25 02:54:56,425 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 02:54:56,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2018-01-25 02:54:56,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 460. [2018-01-25 02:54:56,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2018-01-25 02:54:56,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 696 transitions. [2018-01-25 02:54:56,458 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 696 transitions. Word has length 16 [2018-01-25 02:54:56,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:54:56,458 INFO L432 AbstractCegarLoop]: Abstraction has 460 states and 696 transitions. [2018-01-25 02:54:56,458 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 02:54:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 696 transitions. [2018-01-25 02:54:56,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 02:54:56,459 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:54:56,460 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:54:56,460 INFO L371 AbstractCegarLoop]: === Iteration 8 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-01-25 02:54:56,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1708141764, now seen corresponding path program 1 times [2018-01-25 02:54:56,460 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:54:56,461 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:56,461 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:54:56,462 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:56,462 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:54:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:54:56,482 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:54:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:54:56,591 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 02:54:56,591 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 02:54:56,591 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:54:56,592 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 02:54:56,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 02:54:56,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 02:54:56,593 INFO L87 Difference]: Start difference. First operand 460 states and 696 transitions. Second operand 5 states. [2018-01-25 02:54:56,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 02:54:56,695 INFO L93 Difference]: Finished difference Result 1316 states and 1982 transitions. [2018-01-25 02:54:56,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 02:54:56,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-25 02:54:56,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 02:54:56,721 INFO L225 Difference]: With dead ends: 1316 [2018-01-25 02:54:56,721 INFO L226 Difference]: Without dead ends: 861 [2018-01-25 02:54:56,730 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-25 02:54:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2018-01-25 02:54:56,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 828. [2018-01-25 02:54:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 828 states. [2018-01-25 02:54:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1196 transitions. [2018-01-25 02:54:56,837 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1196 transitions. Word has length 16 [2018-01-25 02:54:56,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 02:54:56,838 INFO L432 AbstractCegarLoop]: Abstraction has 828 states and 1196 transitions. [2018-01-25 02:54:56,838 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 02:54:56,838 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1196 transitions. [2018-01-25 02:54:56,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-25 02:54:56,839 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 02:54:56,839 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 02:54:56,840 INFO L371 AbstractCegarLoop]: === Iteration 9 === [popErr2RequiresViolation, popErr5RequiresViolation, popErr4RequiresViolation, popErr3RequiresViolation, popErr0RequiresViolation, popErr1RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, pushErr5RequiresViolation, pushErr3RequiresViolation, pushErr0RequiresViolation, pushErr1RequiresViolation, pushErr7RequiresViolation, pushErr6RequiresViolation, pushErr2RequiresViolation, pushErr4RequiresViolation]=== [2018-01-25 02:54:56,840 INFO L82 PathProgramCache]: Analyzing trace with hash 750766986, now seen corresponding path program 1 times [2018-01-25 02:54:56,840 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 02:54:56,841 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:56,842 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 02:54:56,843 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 02:54:56,843 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 02:54:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 02:54:56,868 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 02:54:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 02:54:57,302 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 02:54:57,302 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 02:54:57,303 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-01-25 02:54:57,306 INFO L201 CegarAbsIntRunner]: [2], [4], [7], [15], [21], [98], [101], [102], [112], [115], [117], [145], [146], [147], [153], [154], [155], [156], [157] [2018-01-25 02:54:57,403 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 02:54:57,403 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 02:54:57,932 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 02:54:57,933 INFO L268 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 39 variables. [2018-01-25 02:54:57,963 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-25 02:54:58,299 INFO L232 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 83.81% of their original sizes. [2018-01-25 02:54:58,299 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-25 02:54:58,501 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-25 02:54:58,502 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-25 02:54:58,502 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-01-25 02:54:58,502 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 02:54:58,502 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 02:54:58,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 02:54:58,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-25 02:54:58,503 INFO L87 Difference]: Start difference. First operand 828 states and 1196 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown