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/mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/memsafety/test-0237_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:25:44,008 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:25:44,010 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:25:44,022 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:25:44,022 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:25:44,023 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:25:44,024 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:25:44,025 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:25:44,027 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:25:44,028 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:25:44,028 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:25:44,028 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:25:44,029 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:25:44,030 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:25:44,031 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:25:44,033 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:25:44,036 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:25:44,038 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:25:44,039 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:25:44,040 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:25:44,043 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:25:44,049 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:25:44,050 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:25:44,050 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-21 08:25:44,060 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:25:44,061 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:25:44,061 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:25:44,062 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:25:44,062 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:25:44,062 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:25:44,062 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:25:44,062 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:25:44,063 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:25:44,063 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:25:44,064 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:25:44,064 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:25:44,064 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:25:44,064 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:25:44,064 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:25:44,065 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:25:44,065 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:25:44,065 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:25:44,065 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:25:44,065 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:25:44,066 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:25:44,066 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:25:44,066 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:25:44,066 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:25:44,066 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:25:44,067 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:25:44,067 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:25:44,067 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:25:44,067 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:25:44,067 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:25:44,068 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:25:44,068 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:25:44,068 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:25:44,068 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:25:44,068 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:25:44,069 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:25:44,069 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:25:44,069 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:25:44,070 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:25:44,070 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:25:44,106 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:25:44,119 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:25:44,124 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:25:44,125 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:25:44,126 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:25:44,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0237_true-valid-memsafety.i [2018-01-21 08:25:44,339 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:25:44,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:25:44,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:25:44,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:25:44,350 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:25:44,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:25:44" (1/1) ... [2018-01-21 08:25:44,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6479bd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:44, skipping insertion in model container [2018-01-21 08:25:44,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:25:44" (1/1) ... [2018-01-21 08:25:44,367 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:25:44,413 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:25:44,547 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:25:44,577 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:25:44,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:44 WrapperNode [2018-01-21 08:25:44,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:25:44,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:25:44,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:25:44,589 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:25:44,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:44" (1/1) ... [2018-01-21 08:25:44,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:44" (1/1) ... [2018-01-21 08:25:44,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:44" (1/1) ... [2018-01-21 08:25:44,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:44" (1/1) ... [2018-01-21 08:25:44,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:44" (1/1) ... [2018-01-21 08:25:44,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:44" (1/1) ... [2018-01-21 08:25:44,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:44" (1/1) ... [2018-01-21 08:25:44,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:25:44,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:25:44,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:25:44,635 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:25:44,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:44" (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 [2018-01-21 08:25:44,690 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:25:44,690 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:25:44,690 INFO L136 BoogieDeclarations]: Found implementation of procedure calloc_model [2018-01-21 08:25:44,691 INFO L136 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2018-01-21 08:25:44,691 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_insert [2018-01-21 08:25:44,691 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_insert [2018-01-21 08:25:44,691 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_insert [2018-01-21 08:25:44,691 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_insert [2018-01-21 08:25:44,691 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_insert [2018-01-21 08:25:44,692 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_destroy [2018-01-21 08:25:44,692 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_destroy [2018-01-21 08:25:44,692 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_destroy [2018-01-21 08:25:44,692 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_destroy [2018-01-21 08:25:44,692 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_destroy [2018-01-21 08:25:44,692 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:25:44,692 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 08:25:44,693 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 08:25:44,693 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:25:44,693 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:25:44,693 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:25:44,693 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-21 08:25:44,693 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-21 08:25:44,694 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 08:25:44,694 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:25:44,694 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-21 08:25:44,694 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-21 08:25:44,694 INFO L128 BoogieDeclarations]: Found specification of procedure calloc_model [2018-01-21 08:25:44,694 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:25:44,694 INFO L128 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2018-01-21 08:25:44,695 INFO L128 BoogieDeclarations]: Found specification of procedure l4_insert [2018-01-21 08:25:44,695 INFO L128 BoogieDeclarations]: Found specification of procedure l3_insert [2018-01-21 08:25:44,695 INFO L128 BoogieDeclarations]: Found specification of procedure l2_insert [2018-01-21 08:25:44,695 INFO L128 BoogieDeclarations]: Found specification of procedure l1_insert [2018-01-21 08:25:44,695 INFO L128 BoogieDeclarations]: Found specification of procedure l0_insert [2018-01-21 08:25:44,695 INFO L128 BoogieDeclarations]: Found specification of procedure l4_destroy [2018-01-21 08:25:44,695 INFO L128 BoogieDeclarations]: Found specification of procedure l3_destroy [2018-01-21 08:25:44,695 INFO L128 BoogieDeclarations]: Found specification of procedure l2_destroy [2018-01-21 08:25:44,695 INFO L128 BoogieDeclarations]: Found specification of procedure l1_destroy [2018-01-21 08:25:44,696 INFO L128 BoogieDeclarations]: Found specification of procedure l0_destroy [2018-01-21 08:25:44,696 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:25:44,696 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:25:44,696 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:25:45,224 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:25:45,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:25:45 BoogieIcfgContainer [2018-01-21 08:25:45,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:25:45,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:25:45,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:25:45,228 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:25:45,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:25:44" (1/3) ... [2018-01-21 08:25:45,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62740e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:25:45, skipping insertion in model container [2018-01-21 08:25:45,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:44" (2/3) ... [2018-01-21 08:25:45,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62740e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:25:45, skipping insertion in model container [2018-01-21 08:25:45,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:25:45" (3/3) ... [2018-01-21 08:25:45,231 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0237_true-valid-memsafety.i [2018-01-21 08:25:45,238 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:25:45,245 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-01-21 08:25:45,302 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:25:45,302 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:25:45,302 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:25:45,302 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:25:45,302 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:25:45,303 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:25:45,303 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:25:45,303 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == l3_destroyErr0EnsuresViolation======== [2018-01-21 08:25:45,304 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:25:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2018-01-21 08:25:45,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 08:25:45,338 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:25:45,340 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:25:45,340 INFO L371 AbstractCegarLoop]: === Iteration 1 === [l3_destroyErr0EnsuresViolation]=== [2018-01-21 08:25:45,345 INFO L82 PathProgramCache]: Analyzing trace with hash -747535974, now seen corresponding path program 1 times [2018-01-21 08:25:45,348 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:25:45,397 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:25:45,397 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:25:45,397 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:25:45,397 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:25:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:25:45,449 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:25:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:25:45,491 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:25:45,492 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:25:45,492 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:25:45,496 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:25:45,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:25:45,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:25:45,510 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 2 states. [2018-01-21 08:25:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:25:45,665 INFO L93 Difference]: Finished difference Result 354 states and 422 transitions. [2018-01-21 08:25:45,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:25:45,667 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-01-21 08:25:45,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:25:45,681 INFO L225 Difference]: With dead ends: 354 [2018-01-21 08:25:45,681 INFO L226 Difference]: Without dead ends: 160 [2018-01-21 08:25:45,687 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 [2018-01-21 08:25:45,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-21 08:25:45,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2018-01-21 08:25:45,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-01-21 08:25:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2018-01-21 08:25:45,733 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 25 [2018-01-21 08:25:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:25:45,734 INFO L432 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2018-01-21 08:25:45,734 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:25:45,734 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2018-01-21 08:25:45,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-01-21 08:25:45,740 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:25:45,740 INFO L322 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:25:45,740 INFO L371 AbstractCegarLoop]: === Iteration 2 === [l3_destroyErr0EnsuresViolation]=== [2018-01-21 08:25:45,740 INFO L82 PathProgramCache]: Analyzing trace with hash -407505247, now seen corresponding path program 1 times [2018-01-21 08:25:45,741 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:25:45,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:25:45,742 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:25:45,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:25:45,742 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:25:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:25:45,795 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:25:45,981 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 08:25:45,981 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:25:45,981 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:25:45,982 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-01-21 08:25:45,986 INFO L201 CegarAbsIntRunner]: [0], [4], [5], [7], [8], [9], [10], [11], [15], [22], [23], [27], [28], [29], [30], [31], [32], [33], [34], [38], [44], [48], [51], [54], [60], [65], [69], [70], [88], [90], [94], [97], [100], [106], [107], [108], [109], [110], [112], [118], [119], [120], [122], [126], [129], [132], [138], [139], [140], [141], [142], [143], [145], [147], [151], [154], [157], [163], [164], [165], [166], [167], [168], [170], [172], [176], [179], [182], [188], [189], [190], [191], [192], [193], [195], [196], [197], [199], [200], [202], [204], [206], [207], [208], [209], [210], [211], [212], [213], [214], [215], [216], [218], [220], [223], [225], [227], [228], [229], [230], [232], [236], [237], [259], [263], [264], [282], [283], [284], [285], [286], [288], [290], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [301], [302], [303], [304], [305], [306], [307], [308], [309], [310], [311], [312], [313], [314], [316], [317], [318], [320] [2018-01-21 08:25:46,038 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:25:46,038 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 08:26:03,489 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 08:26:03,491 INFO L268 AbstractInterpreter]: Visited 5 different actions 5 times. Never merged. Never widened. Never found a fixpoint. Largest state had 16 variables. [2018-01-21 08:26:03,525 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 08:26:24,112 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 68.3% of their original sizes. [2018-01-21 08:26:24,113 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 08:26:24,218 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 08:26:24,218 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:26:24,219 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 08:26:24,219 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:26:24,221 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 08:26:24,222 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 08:26:24,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-21 08:26:24,222 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand 6 states. [2018-01-21 08:26:29,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:26:29,495 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2018-01-21 08:26:29,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 08:26:29,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2018-01-21 08:26:29,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:26:29,496 INFO L225 Difference]: With dead ends: 160 [2018-01-21 08:26:29,496 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:26:29,498 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 220 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-21 08:26:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:26:29,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:26:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:26:29,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:26:29,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 221 [2018-01-21 08:26:29,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:26:29,500 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:26:29,500 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 08:26:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:26:29,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:26:29,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 08:26:29,624 INFO L401 ceAbstractionStarter]: For program point l3_destroyEXIT(lines 834 843) no Hoare annotation was computed. [2018-01-21 08:26:29,624 INFO L401 ceAbstractionStarter]: For program point L836'''(lines 836 842) no Hoare annotation was computed. [2018-01-21 08:26:29,624 INFO L401 ceAbstractionStarter]: For program point L836(lines 836 842) no Hoare annotation was computed. [2018-01-21 08:26:29,625 INFO L401 ceAbstractionStarter]: For program point L837''(line 837) no Hoare annotation was computed. [2018-01-21 08:26:29,625 INFO L401 ceAbstractionStarter]: For program point L839(line 839) no Hoare annotation was computed. [2018-01-21 08:26:29,625 INFO L401 ceAbstractionStarter]: For program point L838(line 838) no Hoare annotation was computed. [2018-01-21 08:26:29,625 INFO L404 ceAbstractionStarter]: At program point L836''(lines 836 842) the Hoare annotation is: true [2018-01-21 08:26:29,625 INFO L404 ceAbstractionStarter]: At program point l3_destroyENTRY(lines 834 843) the Hoare annotation is: true [2018-01-21 08:26:29,625 INFO L401 ceAbstractionStarter]: For program point L837(line 837) no Hoare annotation was computed. [2018-01-21 08:26:29,626 INFO L401 ceAbstractionStarter]: For program point l3_destroyErr0EnsuresViolation(lines 834 843) no Hoare annotation was computed. [2018-01-21 08:26:29,626 INFO L401 ceAbstractionStarter]: For program point L839'(line 839) no Hoare annotation was computed. [2018-01-21 08:26:29,626 INFO L404 ceAbstractionStarter]: At program point L837'(line 837) the Hoare annotation is: true [2018-01-21 08:26:29,626 INFO L401 ceAbstractionStarter]: For program point L838'(line 838) no Hoare annotation was computed. [2018-01-21 08:26:29,626 INFO L401 ceAbstractionStarter]: For program point L818'''(lines 818 820) no Hoare annotation was computed. [2018-01-21 08:26:29,626 INFO L401 ceAbstractionStarter]: For program point L821(line 821) no Hoare annotation was computed. [2018-01-21 08:26:29,626 INFO L401 ceAbstractionStarter]: For program point l0_insertErr0EnsuresViolation(lines 815 823) no Hoare annotation was computed. [2018-01-21 08:26:29,626 INFO L404 ceAbstractionStarter]: At program point L818''(lines 818 820) the Hoare annotation is: true [2018-01-21 08:26:29,626 INFO L401 ceAbstractionStarter]: For program point L822(line 822) no Hoare annotation was computed. [2018-01-21 08:26:29,627 INFO L401 ceAbstractionStarter]: For program point L818(lines 818 820) no Hoare annotation was computed. [2018-01-21 08:26:29,627 INFO L404 ceAbstractionStarter]: At program point L817(line 817) the Hoare annotation is: true [2018-01-21 08:26:29,627 INFO L401 ceAbstractionStarter]: For program point l0_insertEXIT(lines 815 823) no Hoare annotation was computed. [2018-01-21 08:26:29,627 INFO L401 ceAbstractionStarter]: For program point L821'(line 821) no Hoare annotation was computed. [2018-01-21 08:26:29,627 INFO L404 ceAbstractionStarter]: At program point l0_insertENTRY(lines 815 823) the Hoare annotation is: true [2018-01-21 08:26:29,627 INFO L401 ceAbstractionStarter]: For program point l0_insertFINAL(lines 815 823) no Hoare annotation was computed. [2018-01-21 08:26:29,627 INFO L404 ceAbstractionStarter]: At program point L819(line 819) the Hoare annotation is: true [2018-01-21 08:26:29,627 INFO L401 ceAbstractionStarter]: For program point L819'(line 819) no Hoare annotation was computed. [2018-01-21 08:26:29,628 INFO L401 ceAbstractionStarter]: For program point L817'(line 817) no Hoare annotation was computed. [2018-01-21 08:26:29,628 INFO L404 ceAbstractionStarter]: At program point #Ultimate.C_memsetENTRY(line -1) the Hoare annotation is: true [2018-01-21 08:26:29,628 INFO L404 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-01-21 08:26:29,628 INFO L401 ceAbstractionStarter]: For program point #Ultimate.C_memsetFINAL(line -1) no Hoare annotation was computed. [2018-01-21 08:26:29,628 INFO L401 ceAbstractionStarter]: For program point #Ultimate.C_memsetEXIT(line -1) no Hoare annotation was computed. [2018-01-21 08:26:29,628 INFO L401 ceAbstractionStarter]: For program point l4_destroyErr0EnsuresViolation(lines 824 833) no Hoare annotation was computed. [2018-01-21 08:26:29,628 INFO L401 ceAbstractionStarter]: For program point l4_destroyEXIT(lines 824 833) no Hoare annotation was computed. [2018-01-21 08:26:29,628 INFO L401 ceAbstractionStarter]: For program point L827''(line 827) no Hoare annotation was computed. [2018-01-21 08:26:29,628 INFO L404 ceAbstractionStarter]: At program point L826''(lines 826 832) the Hoare annotation is: true [2018-01-21 08:26:29,629 INFO L404 ceAbstractionStarter]: At program point l4_destroyENTRY(lines 824 833) the Hoare annotation is: true [2018-01-21 08:26:29,629 INFO L401 ceAbstractionStarter]: For program point L829(line 829) no Hoare annotation was computed. [2018-01-21 08:26:29,629 INFO L401 ceAbstractionStarter]: For program point L828(line 828) no Hoare annotation was computed. [2018-01-21 08:26:29,629 INFO L401 ceAbstractionStarter]: For program point L827(line 827) no Hoare annotation was computed. [2018-01-21 08:26:29,629 INFO L401 ceAbstractionStarter]: For program point L826(lines 826 832) no Hoare annotation was computed. [2018-01-21 08:26:29,629 INFO L401 ceAbstractionStarter]: For program point L826'''(lines 826 832) no Hoare annotation was computed. [2018-01-21 08:26:29,629 INFO L401 ceAbstractionStarter]: For program point L828'(line 828) no Hoare annotation was computed. [2018-01-21 08:26:29,629 INFO L401 ceAbstractionStarter]: For program point L829'(line 829) no Hoare annotation was computed. [2018-01-21 08:26:29,629 INFO L401 ceAbstractionStarter]: For program point L827'(line 827) no Hoare annotation was computed. [2018-01-21 08:26:29,629 INFO L404 ceAbstractionStarter]: At program point L799(line 799) the Hoare annotation is: true [2018-01-21 08:26:29,630 INFO L401 ceAbstractionStarter]: For program point l2_insertErr0EnsuresViolation(lines 795 804) no Hoare annotation was computed. [2018-01-21 08:26:29,630 INFO L401 ceAbstractionStarter]: For program point L798(lines 798 800) no Hoare annotation was computed. [2018-01-21 08:26:29,630 INFO L404 ceAbstractionStarter]: At program point L797(line 797) the Hoare annotation is: true [2018-01-21 08:26:29,630 INFO L401 ceAbstractionStarter]: For program point L798'''(lines 798 800) no Hoare annotation was computed. [2018-01-21 08:26:29,630 INFO L401 ceAbstractionStarter]: For program point L803(line 803) no Hoare annotation was computed. [2018-01-21 08:26:29,630 INFO L401 ceAbstractionStarter]: For program point L802(line 802) no Hoare annotation was computed. [2018-01-21 08:26:29,630 INFO L404 ceAbstractionStarter]: At program point l2_insertENTRY(lines 795 804) the Hoare annotation is: true [2018-01-21 08:26:29,630 INFO L401 ceAbstractionStarter]: For program point L801(line 801) no Hoare annotation was computed. [2018-01-21 08:26:29,630 INFO L401 ceAbstractionStarter]: For program point L802'(line 802) no Hoare annotation was computed. [2018-01-21 08:26:29,630 INFO L401 ceAbstractionStarter]: For program point L799'(line 799) no Hoare annotation was computed. [2018-01-21 08:26:29,630 INFO L401 ceAbstractionStarter]: For program point L797'(line 797) no Hoare annotation was computed. [2018-01-21 08:26:29,630 INFO L401 ceAbstractionStarter]: For program point l2_insertEXIT(lines 795 804) no Hoare annotation was computed. [2018-01-21 08:26:29,630 INFO L404 ceAbstractionStarter]: At program point L798''(lines 798 800) the Hoare annotation is: true [2018-01-21 08:26:29,631 INFO L401 ceAbstractionStarter]: For program point l2_insertFINAL(lines 795 804) no Hoare annotation was computed. [2018-01-21 08:26:29,631 INFO L404 ceAbstractionStarter]: At program point L880(line 880) the Hoare annotation is: true [2018-01-21 08:26:29,631 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 874 881) no Hoare annotation was computed. [2018-01-21 08:26:29,631 INFO L401 ceAbstractionStarter]: For program point L880'(line 880) no Hoare annotation was computed. [2018-01-21 08:26:29,631 INFO L404 ceAbstractionStarter]: At program point L878(line 878) the Hoare annotation is: true [2018-01-21 08:26:29,631 INFO L401 ceAbstractionStarter]: For program point L877(lines 877 879) no Hoare annotation was computed. [2018-01-21 08:26:29,631 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 874 881) no Hoare annotation was computed. [2018-01-21 08:26:29,631 INFO L401 ceAbstractionStarter]: For program point L877'''(lines 877 879) no Hoare annotation was computed. [2018-01-21 08:26:29,631 INFO L401 ceAbstractionStarter]: For program point L878'(line 878) no Hoare annotation was computed. [2018-01-21 08:26:29,632 INFO L404 ceAbstractionStarter]: At program point L877''(lines 877 879) the Hoare annotation is: true [2018-01-21 08:26:29,632 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 874 881) no Hoare annotation was computed. [2018-01-21 08:26:29,632 INFO L401 ceAbstractionStarter]: For program point L791(line 791) no Hoare annotation was computed. [2018-01-21 08:26:29,632 INFO L401 ceAbstractionStarter]: For program point L793(line 793) no Hoare annotation was computed. [2018-01-21 08:26:29,632 INFO L401 ceAbstractionStarter]: For program point L792(line 792) no Hoare annotation was computed. [2018-01-21 08:26:29,632 INFO L401 ceAbstractionStarter]: For program point L788(lines 788 790) no Hoare annotation was computed. [2018-01-21 08:26:29,632 INFO L404 ceAbstractionStarter]: At program point L787(line 787) the Hoare annotation is: true [2018-01-21 08:26:29,632 INFO L401 ceAbstractionStarter]: For program point L792'(line 792) no Hoare annotation was computed. [2018-01-21 08:26:29,633 INFO L404 ceAbstractionStarter]: At program point L789(line 789) the Hoare annotation is: true [2018-01-21 08:26:29,633 INFO L404 ceAbstractionStarter]: At program point l3_insertENTRY(lines 785 794) the Hoare annotation is: true [2018-01-21 08:26:29,633 INFO L401 ceAbstractionStarter]: For program point L789'(line 789) no Hoare annotation was computed. [2018-01-21 08:26:29,633 INFO L401 ceAbstractionStarter]: For program point L787'(line 787) no Hoare annotation was computed. [2018-01-21 08:26:29,633 INFO L401 ceAbstractionStarter]: For program point l3_insertEXIT(lines 785 794) no Hoare annotation was computed. [2018-01-21 08:26:29,633 INFO L401 ceAbstractionStarter]: For program point l3_insertFINAL(lines 785 794) no Hoare annotation was computed. [2018-01-21 08:26:29,633 INFO L404 ceAbstractionStarter]: At program point L788''(lines 788 790) the Hoare annotation is: true [2018-01-21 08:26:29,633 INFO L401 ceAbstractionStarter]: For program point l3_insertErr0EnsuresViolation(lines 785 794) no Hoare annotation was computed. [2018-01-21 08:26:29,633 INFO L401 ceAbstractionStarter]: For program point L788'''(lines 788 790) no Hoare annotation was computed. [2018-01-21 08:26:29,634 INFO L401 ceAbstractionStarter]: For program point l1_insertEXIT(lines 805 814) no Hoare annotation was computed. [2018-01-21 08:26:29,634 INFO L404 ceAbstractionStarter]: At program point L808''(lines 808 810) the Hoare annotation is: true [2018-01-21 08:26:29,634 INFO L401 ceAbstractionStarter]: For program point L813(line 813) no Hoare annotation was computed. [2018-01-21 08:26:29,634 INFO L401 ceAbstractionStarter]: For program point L812(line 812) no Hoare annotation was computed. [2018-01-21 08:26:29,634 INFO L401 ceAbstractionStarter]: For program point L811(line 811) no Hoare annotation was computed. [2018-01-21 08:26:29,634 INFO L404 ceAbstractionStarter]: At program point L807(line 807) the Hoare annotation is: true [2018-01-21 08:26:29,634 INFO L401 ceAbstractionStarter]: For program point L812'(line 812) no Hoare annotation was computed. [2018-01-21 08:26:29,634 INFO L404 ceAbstractionStarter]: At program point l1_insertENTRY(lines 805 814) the Hoare annotation is: true [2018-01-21 08:26:29,635 INFO L401 ceAbstractionStarter]: For program point L808'''(lines 808 810) no Hoare annotation was computed. [2018-01-21 08:26:29,635 INFO L401 ceAbstractionStarter]: For program point l1_insertFINAL(lines 805 814) no Hoare annotation was computed. [2018-01-21 08:26:29,635 INFO L404 ceAbstractionStarter]: At program point L809(line 809) the Hoare annotation is: true [2018-01-21 08:26:29,635 INFO L401 ceAbstractionStarter]: For program point L808(lines 808 810) no Hoare annotation was computed. [2018-01-21 08:26:29,635 INFO L401 ceAbstractionStarter]: For program point l1_insertErr0EnsuresViolation(lines 805 814) no Hoare annotation was computed. [2018-01-21 08:26:29,635 INFO L401 ceAbstractionStarter]: For program point L809'(line 809) no Hoare annotation was computed. [2018-01-21 08:26:29,635 INFO L401 ceAbstractionStarter]: For program point L807'(line 807) no Hoare annotation was computed. [2018-01-21 08:26:29,635 INFO L401 ceAbstractionStarter]: For program point L866'''(lines 866 872) no Hoare annotation was computed. [2018-01-21 08:26:29,635 INFO L401 ceAbstractionStarter]: For program point l0_destroyEXIT(lines 864 873) no Hoare annotation was computed. [2018-01-21 08:26:29,635 INFO L401 ceAbstractionStarter]: For program point L869(line 869) no Hoare annotation was computed. [2018-01-21 08:26:29,636 INFO L401 ceAbstractionStarter]: For program point l0_destroyErr0EnsuresViolation(lines 864 873) no Hoare annotation was computed. [2018-01-21 08:26:29,636 INFO L401 ceAbstractionStarter]: For program point L868(line 868) no Hoare annotation was computed. [2018-01-21 08:26:29,636 INFO L401 ceAbstractionStarter]: For program point L867(line 867) no Hoare annotation was computed. [2018-01-21 08:26:29,636 INFO L401 ceAbstractionStarter]: For program point L866(lines 866 872) no Hoare annotation was computed. [2018-01-21 08:26:29,636 INFO L401 ceAbstractionStarter]: For program point L868'(line 868) no Hoare annotation was computed. [2018-01-21 08:26:29,636 INFO L401 ceAbstractionStarter]: For program point L869'(line 869) no Hoare annotation was computed. [2018-01-21 08:26:29,636 INFO L404 ceAbstractionStarter]: At program point L866''(lines 866 872) the Hoare annotation is: true [2018-01-21 08:26:29,636 INFO L404 ceAbstractionStarter]: At program point L867'(line 867) the Hoare annotation is: true [2018-01-21 08:26:29,637 INFO L401 ceAbstractionStarter]: For program point L867''(line 867) no Hoare annotation was computed. [2018-01-21 08:26:29,637 INFO L404 ceAbstractionStarter]: At program point l0_destroyENTRY(lines 864 873) the Hoare annotation is: true [2018-01-21 08:26:29,637 INFO L401 ceAbstractionStarter]: For program point calloc_modelErr0EnsuresViolation(lines 740 743) no Hoare annotation was computed. [2018-01-21 08:26:29,637 INFO L401 ceAbstractionStarter]: For program point L742'(line 742) no Hoare annotation was computed. [2018-01-21 08:26:29,637 INFO L404 ceAbstractionStarter]: At program point calloc_modelENTRY(lines 740 743) the Hoare annotation is: true [2018-01-21 08:26:29,637 INFO L401 ceAbstractionStarter]: For program point L741'(line 741) no Hoare annotation was computed. [2018-01-21 08:26:29,637 INFO L401 ceAbstractionStarter]: For program point calloc_modelFINAL(lines 740 743) no Hoare annotation was computed. [2018-01-21 08:26:29,637 INFO L401 ceAbstractionStarter]: For program point calloc_modelEXIT(lines 740 743) no Hoare annotation was computed. [2018-01-21 08:26:29,637 INFO L404 ceAbstractionStarter]: At program point L742(line 742) the Hoare annotation is: true [2018-01-21 08:26:29,637 INFO L401 ceAbstractionStarter]: For program point L741(line 741) no Hoare annotation was computed. [2018-01-21 08:26:29,638 INFO L401 ceAbstractionStarter]: For program point L780(line 780) no Hoare annotation was computed. [2018-01-21 08:26:29,638 INFO L401 ceAbstractionStarter]: For program point l4_insertEXIT(lines 776 784) no Hoare annotation was computed. [2018-01-21 08:26:29,638 INFO L401 ceAbstractionStarter]: For program point L783(line 783) no Hoare annotation was computed. [2018-01-21 08:26:29,638 INFO L401 ceAbstractionStarter]: For program point L782(line 782) no Hoare annotation was computed. [2018-01-21 08:26:29,638 INFO L401 ceAbstractionStarter]: For program point l4_insertFINAL(lines 776 784) no Hoare annotation was computed. [2018-01-21 08:26:29,638 INFO L401 ceAbstractionStarter]: For program point L781(line 781) no Hoare annotation was computed. [2018-01-21 08:26:29,638 INFO L401 ceAbstractionStarter]: For program point L782'(line 782) no Hoare annotation was computed. [2018-01-21 08:26:29,638 INFO L401 ceAbstractionStarter]: For program point L781'(line 781) no Hoare annotation was computed. [2018-01-21 08:26:29,639 INFO L401 ceAbstractionStarter]: For program point L780'(line 780) no Hoare annotation was computed. [2018-01-21 08:26:29,639 INFO L401 ceAbstractionStarter]: For program point l4_insertErr0EnsuresViolation(lines 776 784) no Hoare annotation was computed. [2018-01-21 08:26:29,639 INFO L404 ceAbstractionStarter]: At program point L779(line 779) the Hoare annotation is: true [2018-01-21 08:26:29,639 INFO L404 ceAbstractionStarter]: At program point L778(line 778) the Hoare annotation is: true [2018-01-21 08:26:29,639 INFO L401 ceAbstractionStarter]: For program point L779'(line 779) no Hoare annotation was computed. [2018-01-21 08:26:29,639 INFO L401 ceAbstractionStarter]: For program point L780''(line 780) no Hoare annotation was computed. [2018-01-21 08:26:29,639 INFO L401 ceAbstractionStarter]: For program point L778'(line 778) no Hoare annotation was computed. [2018-01-21 08:26:29,639 INFO L404 ceAbstractionStarter]: At program point l4_insertENTRY(lines 776 784) the Hoare annotation is: true [2018-01-21 08:26:29,640 INFO L401 ceAbstractionStarter]: For program point L779''(line 779) no Hoare annotation was computed. [2018-01-21 08:26:29,640 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieFINAL(lines 769 775) no Hoare annotation was computed. [2018-01-21 08:26:29,640 INFO L401 ceAbstractionStarter]: For program point L772(lines 772 773) no Hoare annotation was computed. [2018-01-21 08:26:29,640 INFO L404 ceAbstractionStarter]: At program point L771(line 771) the Hoare annotation is: true [2018-01-21 08:26:29,640 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieErr0EnsuresViolation(lines 769 775) no Hoare annotation was computed. [2018-01-21 08:26:29,640 INFO L401 ceAbstractionStarter]: For program point L771'(line 771) no Hoare annotation was computed. [2018-01-21 08:26:29,640 INFO L404 ceAbstractionStarter]: At program point zalloc_or_dieENTRY(lines 769 775) the Hoare annotation is: true [2018-01-21 08:26:29,640 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieEXIT(lines 769 775) no Hoare annotation was computed. [2018-01-21 08:26:29,641 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 881) no Hoare annotation was computed. [2018-01-21 08:26:29,641 INFO L401 ceAbstractionStarter]: For program point L876'(line 876) no Hoare annotation was computed. [2018-01-21 08:26:29,641 INFO L401 ceAbstractionStarter]: For program point L876(line 876) no Hoare annotation was computed. [2018-01-21 08:26:29,641 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 881) no Hoare annotation was computed. [2018-01-21 08:26:29,641 INFO L397 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 881) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-21 08:26:29,641 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 881) no Hoare annotation was computed. [2018-01-21 08:26:29,641 INFO L401 ceAbstractionStarter]: For program point L858(line 858) no Hoare annotation was computed. [2018-01-21 08:26:29,642 INFO L401 ceAbstractionStarter]: For program point L857(line 857) no Hoare annotation was computed. [2018-01-21 08:26:29,642 INFO L401 ceAbstractionStarter]: For program point L856(lines 856 862) no Hoare annotation was computed. [2018-01-21 08:26:29,642 INFO L404 ceAbstractionStarter]: At program point L857'(line 857) the Hoare annotation is: true [2018-01-21 08:26:29,642 INFO L401 ceAbstractionStarter]: For program point L857''(line 857) no Hoare annotation was computed. [2018-01-21 08:26:29,642 INFO L401 ceAbstractionStarter]: For program point L858'(line 858) no Hoare annotation was computed. [2018-01-21 08:26:29,642 INFO L401 ceAbstractionStarter]: For program point L859(line 859) no Hoare annotation was computed. [2018-01-21 08:26:29,642 INFO L404 ceAbstractionStarter]: At program point L856''(lines 856 862) the Hoare annotation is: true [2018-01-21 08:26:29,642 INFO L401 ceAbstractionStarter]: For program point L856'''(lines 856 862) no Hoare annotation was computed. [2018-01-21 08:26:29,643 INFO L404 ceAbstractionStarter]: At program point l1_destroyENTRY(lines 854 863) the Hoare annotation is: true [2018-01-21 08:26:29,643 INFO L401 ceAbstractionStarter]: For program point l1_destroyErr0EnsuresViolation(lines 854 863) no Hoare annotation was computed. [2018-01-21 08:26:29,643 INFO L401 ceAbstractionStarter]: For program point L859'(line 859) no Hoare annotation was computed. [2018-01-21 08:26:29,643 INFO L401 ceAbstractionStarter]: For program point l1_destroyEXIT(lines 854 863) no Hoare annotation was computed. [2018-01-21 08:26:29,643 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 881) the Hoare annotation is: true [2018-01-21 08:26:29,643 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 881) no Hoare annotation was computed. [2018-01-21 08:26:29,643 INFO L397 ceAbstractionStarter]: At program point L1(lines 1 881) the Hoare annotation is: false [2018-01-21 08:26:29,643 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 881) no Hoare annotation was computed. [2018-01-21 08:26:29,644 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 881) no Hoare annotation was computed. [2018-01-21 08:26:29,644 INFO L401 ceAbstractionStarter]: For program point L846'''(lines 846 852) no Hoare annotation was computed. [2018-01-21 08:26:29,644 INFO L401 ceAbstractionStarter]: For program point l2_destroyErr0EnsuresViolation(lines 844 853) no Hoare annotation was computed. [2018-01-21 08:26:29,644 INFO L401 ceAbstractionStarter]: For program point L847(line 847) no Hoare annotation was computed. [2018-01-21 08:26:29,644 INFO L401 ceAbstractionStarter]: For program point L846(lines 846 852) no Hoare annotation was computed. [2018-01-21 08:26:29,644 INFO L404 ceAbstractionStarter]: At program point L847'(line 847) the Hoare annotation is: true [2018-01-21 08:26:29,644 INFO L401 ceAbstractionStarter]: For program point L847''(line 847) no Hoare annotation was computed. [2018-01-21 08:26:29,644 INFO L401 ceAbstractionStarter]: For program point L849(line 849) no Hoare annotation was computed. [2018-01-21 08:26:29,644 INFO L401 ceAbstractionStarter]: For program point L848(line 848) no Hoare annotation was computed. [2018-01-21 08:26:29,645 INFO L404 ceAbstractionStarter]: At program point L846''(lines 846 852) the Hoare annotation is: true [2018-01-21 08:26:29,645 INFO L404 ceAbstractionStarter]: At program point l2_destroyENTRY(lines 844 853) the Hoare annotation is: true [2018-01-21 08:26:29,645 INFO L401 ceAbstractionStarter]: For program point l2_destroyEXIT(lines 844 853) no Hoare annotation was computed. [2018-01-21 08:26:29,645 INFO L401 ceAbstractionStarter]: For program point L848'(line 848) no Hoare annotation was computed. [2018-01-21 08:26:29,645 INFO L401 ceAbstractionStarter]: For program point L849'(line 849) no Hoare annotation was computed. [2018-01-21 08:26:29,648 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:26:29,648 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:26:29,648 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:26:29,648 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:26:29,648 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:26:29,648 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:26:29,649 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:26:29,649 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == l0_insertErr0EnsuresViolation======== [2018-01-21 08:26:29,649 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:26:29,651 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2018-01-21 08:26:29,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-21 08:26:29,653 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:26:29,654 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:26:29,654 INFO L371 AbstractCegarLoop]: === Iteration 1 === [l0_insertErr0EnsuresViolation]=== [2018-01-21 08:26:29,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1347593123, now seen corresponding path program 1 times [2018-01-21 08:26:29,654 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:26:29,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:26:29,655 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:26:29,656 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:26:29,656 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:26:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:26:29,671 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:26:29,697 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 08:26:29,697 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:26:29,697 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:26:29,698 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 08:26:29,698 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 08:26:29,698 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:26:29,699 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2018-01-21 08:26:29,715 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:26:29,715 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 08:26:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:26:29,756 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:26:29,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:26:29,763 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:26:29,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:26:29,852 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:26:29,853 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-01-21 08:26:29,853 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:26:29,853 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:26:29,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:26:29,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:26:29,854 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 2 states. [2018-01-21 08:26:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:26:29,874 INFO L93 Difference]: Finished difference Result 354 states and 422 transitions. [2018-01-21 08:26:29,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:26:29,875 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2018-01-21 08:26:29,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:26:29,877 INFO L225 Difference]: With dead ends: 354 [2018-01-21 08:26:29,878 INFO L226 Difference]: Without dead ends: 100 [2018-01-21 08:26:29,880 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:26:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-01-21 08:26:29,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-01-21 08:26:29,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-01-21 08:26:29,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2018-01-21 08:26:29,891 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 35 [2018-01-21 08:26:29,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:26:29,891 INFO L432 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2018-01-21 08:26:29,891 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:26:29,891 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2018-01-21 08:26:29,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-01-21 08:26:29,894 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:26:29,895 INFO L322 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:26:29,895 INFO L371 AbstractCegarLoop]: === Iteration 2 === [l0_insertErr0EnsuresViolation]=== [2018-01-21 08:26:29,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1557316018, now seen corresponding path program 1 times [2018-01-21 08:26:29,895 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:26:29,897 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:26:29,897 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:26:29,897 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:26:29,897 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:26:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:26:29,918 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:26:29,973 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 08:26:29,973 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:26:29,974 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:26:29,974 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-01-21 08:26:29,974 INFO L201 CegarAbsIntRunner]: [48], [88], [90], [94], [97], [100], [106], [107], [108], [109], [111], [112], [118], [119], [120], [122], [126], [129], [132], [138], [139], [140], [141], [142], [143], [145], [147], [151], [154], [157], [163], [164], [165], [166], [167], [168], [170], [172], [176], [179], [182], [188], [189], [190], [191], [192], [193], [195], [196], [197], [199], [200], [202], [204], [206], [207], [208], [209], [210], [211], [212], [213], [214], [215], [216], [218], [220], [223], [225], [227], [228], [229], [230], [284], [290], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [301], [302], [303], [304], [305], [306], [307], [308], [309], [310], [311], [312], [313], [316], [317], [318] [2018-01-21 08:26:29,978 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:26:29,978 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown