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_mostprecise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0235_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:13:51,372 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:13:51,373 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:13:51,385 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:13:51,386 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:13:51,386 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:13:51,387 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:13:51,388 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:13:51,390 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:13:51,390 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:13:51,391 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:13:51,391 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:13:51,392 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:13:51,392 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:13:51,393 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:13:51,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:13:51,398 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:13:51,400 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:13:51,401 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:13:51,402 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:13:51,405 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:13:51,405 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:13:51,405 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:13:51,406 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:13:51,407 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:13:51,408 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:13:51,409 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:13:51,409 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:13:51,409 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:13:51,410 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:13:51,410 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:13:51,410 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_mostprecise.epf [2018-01-24 20:13:51,420 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:13:51,420 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:13:51,421 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:13:51,421 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:13:51,422 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:13:51,422 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:13:51,422 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:13:51,422 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:13:51,422 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:13:51,423 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:13:51,423 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:13:51,423 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:13:51,424 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:13:51,424 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:13:51,424 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:13:51,424 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:13:51,424 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:13:51,425 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:13:51,425 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:13:51,425 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:13:51,425 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:13:51,425 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:13:51,426 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:13:51,426 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:13:51,426 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:13:51,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:13:51,426 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:13:51,427 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:13:51,427 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:13:51,427 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:13:51,427 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:13:51,427 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:13:51,427 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:13:51,428 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:13:51,428 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:13:51,429 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:13:51,429 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:13:51,464 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:13:51,477 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:13:51,481 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:13:51,483 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:13:51,483 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:13:51,484 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0235_true-valid-memsafety.i [2018-01-24 20:13:51,680 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:13:51,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:13:51,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:13:51,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:13:51,696 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:13:51,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:13:51" (1/1) ... [2018-01-24 20:13:51,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376b2429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:13:51, skipping insertion in model container [2018-01-24 20:13:51,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:13:51" (1/1) ... [2018-01-24 20:13:51,719 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:13:51,765 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:13:51,897 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:13:51,929 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:13:51,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:13:51 WrapperNode [2018-01-24 20:13:51,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:13:51,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:13:51,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:13:51,941 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:13:51,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:13:51" (1/1) ... [2018-01-24 20:13:51,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:13:51" (1/1) ... [2018-01-24 20:13:51,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:13:51" (1/1) ... [2018-01-24 20:13:51,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:13:51" (1/1) ... [2018-01-24 20:13:51,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:13:51" (1/1) ... [2018-01-24 20:13:51,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:13:51" (1/1) ... [2018-01-24 20:13:51,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:13:51" (1/1) ... [2018-01-24 20:13:51,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:13:51,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:13:51,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:13:51,986 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:13:51,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:13:51" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:13:52,042 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:13:52,042 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:13:52,042 INFO L136 BoogieDeclarations]: Found implementation of procedure calloc_model [2018-01-24 20:13:52,042 INFO L136 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2018-01-24 20:13:52,042 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_insert [2018-01-24 20:13:52,042 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_insert [2018-01-24 20:13:52,043 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_insert [2018-01-24 20:13:52,043 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_insert [2018-01-24 20:13:52,043 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_insert [2018-01-24 20:13:52,043 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_destroy [2018-01-24 20:13:52,043 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_destroy [2018-01-24 20:13:52,043 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_destroy [2018-01-24 20:13:52,044 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_destroy [2018-01-24 20:13:52,044 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_destroy [2018-01-24 20:13:52,044 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:13:52,044 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:13:52,044 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:13:52,044 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:13:52,044 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:13:52,045 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:13:52,045 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-24 20:13:52,045 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-24 20:13:52,045 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:13:52,045 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:13:52,046 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-24 20:13:52,046 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-24 20:13:52,046 INFO L128 BoogieDeclarations]: Found specification of procedure calloc_model [2018-01-24 20:13:52,046 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:13:52,046 INFO L128 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2018-01-24 20:13:52,046 INFO L128 BoogieDeclarations]: Found specification of procedure l4_insert [2018-01-24 20:13:52,046 INFO L128 BoogieDeclarations]: Found specification of procedure l3_insert [2018-01-24 20:13:52,047 INFO L128 BoogieDeclarations]: Found specification of procedure l2_insert [2018-01-24 20:13:52,047 INFO L128 BoogieDeclarations]: Found specification of procedure l1_insert [2018-01-24 20:13:52,047 INFO L128 BoogieDeclarations]: Found specification of procedure l0_insert [2018-01-24 20:13:52,047 INFO L128 BoogieDeclarations]: Found specification of procedure l4_destroy [2018-01-24 20:13:52,047 INFO L128 BoogieDeclarations]: Found specification of procedure l3_destroy [2018-01-24 20:13:52,047 INFO L128 BoogieDeclarations]: Found specification of procedure l2_destroy [2018-01-24 20:13:52,047 INFO L128 BoogieDeclarations]: Found specification of procedure l1_destroy [2018-01-24 20:13:52,048 INFO L128 BoogieDeclarations]: Found specification of procedure l0_destroy [2018-01-24 20:13:52,048 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:13:52,048 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:13:52,048 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:13:52,471 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-24 20:13:52,733 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:13:52,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:13:52 BoogieIcfgContainer [2018-01-24 20:13:52,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:13:52,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:13:52,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:13:52,736 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:13:52,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:13:51" (1/3) ... [2018-01-24 20:13:52,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7451d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:13:52, skipping insertion in model container [2018-01-24 20:13:52,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:13:51" (2/3) ... [2018-01-24 20:13:52,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7451d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:13:52, skipping insertion in model container [2018-01-24 20:13:52,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:13:52" (3/3) ... [2018-01-24 20:13:52,740 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0235_true-valid-memsafety.i [2018-01-24 20:13:52,746 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:13:52,754 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 83 error locations. [2018-01-24 20:13:52,815 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:13:52,815 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:13:52,815 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:13:52,816 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:13:52,816 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:13:52,816 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:13:52,816 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:13:52,816 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:13:52,817 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:13:52,845 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states. [2018-01-24 20:13:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 20:13:52,851 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:13:52,852 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 20:13:52,852 INFO L371 AbstractCegarLoop]: === Iteration 1 === [l3_destroyErr0RequiresViolation, l3_destroyErr3RequiresViolation, l3_destroyErr1RequiresViolation, l3_destroyErr2RequiresViolation, l3_destroyErr4RequiresViolation, l3_destroyErr5RequiresViolation, l0_insertErr3RequiresViolation, l0_insertErr1RequiresViolation, l0_insertErr5RequiresViolation, l0_insertErr2RequiresViolation, l0_insertErr4RequiresViolation, l0_insertErr0RequiresViolation, l4_destroyErr4RequiresViolation, l4_destroyErr6RequiresViolation, l4_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr7RequiresViolation, l4_destroyErr0RequiresViolation, l4_destroyErr5RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, l3_insertErr4RequiresViolation, l3_insertErr0RequiresViolation, l3_insertErr5RequiresViolation, l3_insertErr3RequiresViolation, l3_insertErr1RequiresViolation, l3_insertErr2RequiresViolation, l1_insertErr4RequiresViolation, l1_insertErr0RequiresViolation, l1_insertErr2RequiresViolation, l1_insertErr3RequiresViolation, l1_insertErr1RequiresViolation, l1_insertErr5RequiresViolation, l0_destroyErr5RequiresViolation, l0_destroyErr3RequiresViolation, l0_destroyErr1RequiresViolation, l0_destroyErr0RequiresViolation, l0_destroyErr4RequiresViolation, l0_destroyErr2RequiresViolation, calloc_modelErr0RequiresViolation, calloc_modelErr1RequiresViolation, l4_insertErr5RequiresViolation, l4_insertErr3RequiresViolation, l4_insertErr4RequiresViolation, l4_insertErr6RequiresViolation, l4_insertErr2RequiresViolation, l4_insertErr0RequiresViolation, l4_insertErr1RequiresViolation, l4_insertErr7RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, l1_destroyErr2RequiresViolation, l1_destroyErr4RequiresViolation, l1_destroyErr0RequiresViolation, l1_destroyErr1RequiresViolation, l1_destroyErr5RequiresViolation, l1_destroyErr3RequiresViolation, l2_destroyErr1RequiresViolation, l2_destroyErr0RequiresViolation, l2_destroyErr2RequiresViolation, l2_destroyErr4RequiresViolation, l2_destroyErr5RequiresViolation, l2_destroyErr3RequiresViolation]=== [2018-01-24 20:13:52,857 INFO L82 PathProgramCache]: Analyzing trace with hash 15106047, now seen corresponding path program 1 times [2018-01-24 20:13:52,859 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:13:52,903 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:13:52,904 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:13:52,904 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:13:52,904 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:13:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:13:52,960 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:13:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:13:53,131 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:13:53,131 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:13:53,131 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:13:53,135 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:13:53,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:13:53,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:13:53,153 INFO L87 Difference]: Start difference. First operand 270 states. Second operand 3 states. [2018-01-24 20:13:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:13:53,526 INFO L93 Difference]: Finished difference Result 539 states and 648 transitions. [2018-01-24 20:13:53,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:13:53,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 20:13:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:13:53,541 INFO L225 Difference]: With dead ends: 539 [2018-01-24 20:13:53,541 INFO L226 Difference]: Without dead ends: 274 [2018-01-24 20:13:53,548 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 [2018-01-24 20:13:53,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-01-24 20:13:53,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 266. [2018-01-24 20:13:53,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-01-24 20:13:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 296 transitions. [2018-01-24 20:13:53,606 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 296 transitions. Word has length 4 [2018-01-24 20:13:53,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:13:53,607 INFO L432 AbstractCegarLoop]: Abstraction has 266 states and 296 transitions. [2018-01-24 20:13:53,607 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:13:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 296 transitions. [2018-01-24 20:13:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 20:13:53,607 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:13:53,608 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 20:13:53,608 INFO L371 AbstractCegarLoop]: === Iteration 2 === [l3_destroyErr0RequiresViolation, l3_destroyErr3RequiresViolation, l3_destroyErr1RequiresViolation, l3_destroyErr2RequiresViolation, l3_destroyErr4RequiresViolation, l3_destroyErr5RequiresViolation, l0_insertErr3RequiresViolation, l0_insertErr1RequiresViolation, l0_insertErr5RequiresViolation, l0_insertErr2RequiresViolation, l0_insertErr4RequiresViolation, l0_insertErr0RequiresViolation, l4_destroyErr4RequiresViolation, l4_destroyErr6RequiresViolation, l4_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr7RequiresViolation, l4_destroyErr0RequiresViolation, l4_destroyErr5RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, l3_insertErr4RequiresViolation, l3_insertErr0RequiresViolation, l3_insertErr5RequiresViolation, l3_insertErr3RequiresViolation, l3_insertErr1RequiresViolation, l3_insertErr2RequiresViolation, l1_insertErr4RequiresViolation, l1_insertErr0RequiresViolation, l1_insertErr2RequiresViolation, l1_insertErr3RequiresViolation, l1_insertErr1RequiresViolation, l1_insertErr5RequiresViolation, l0_destroyErr5RequiresViolation, l0_destroyErr3RequiresViolation, l0_destroyErr1RequiresViolation, l0_destroyErr0RequiresViolation, l0_destroyErr4RequiresViolation, l0_destroyErr2RequiresViolation, calloc_modelErr0RequiresViolation, calloc_modelErr1RequiresViolation, l4_insertErr5RequiresViolation, l4_insertErr3RequiresViolation, l4_insertErr4RequiresViolation, l4_insertErr6RequiresViolation, l4_insertErr2RequiresViolation, l4_insertErr0RequiresViolation, l4_insertErr1RequiresViolation, l4_insertErr7RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, l1_destroyErr2RequiresViolation, l1_destroyErr4RequiresViolation, l1_destroyErr0RequiresViolation, l1_destroyErr1RequiresViolation, l1_destroyErr5RequiresViolation, l1_destroyErr3RequiresViolation, l2_destroyErr1RequiresViolation, l2_destroyErr0RequiresViolation, l2_destroyErr2RequiresViolation, l2_destroyErr4RequiresViolation, l2_destroyErr5RequiresViolation, l2_destroyErr3RequiresViolation]=== [2018-01-24 20:13:53,608 INFO L82 PathProgramCache]: Analyzing trace with hash 15106046, now seen corresponding path program 1 times [2018-01-24 20:13:53,608 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:13:53,609 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:13:53,609 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:13:53,609 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:13:53,609 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:13:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:13:53,618 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:13:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:13:53,645 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:13:53,645 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:13:53,645 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:13:53,646 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:13:53,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:13:53,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:13:53,647 INFO L87 Difference]: Start difference. First operand 266 states and 296 transitions. Second operand 3 states. [2018-01-24 20:13:53,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:13:53,887 INFO L93 Difference]: Finished difference Result 390 states and 444 transitions. [2018-01-24 20:13:53,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:13:53,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 20:13:53,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:13:53,908 INFO L225 Difference]: With dead ends: 390 [2018-01-24 20:13:53,908 INFO L226 Difference]: Without dead ends: 382 [2018-01-24 20:13:53,909 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 [2018-01-24 20:13:53,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-01-24 20:13:53,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 337. [2018-01-24 20:13:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-01-24 20:13:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 415 transitions. [2018-01-24 20:13:53,938 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 415 transitions. Word has length 4 [2018-01-24 20:13:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:13:53,938 INFO L432 AbstractCegarLoop]: Abstraction has 337 states and 415 transitions. [2018-01-24 20:13:53,938 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:13:53,938 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 415 transitions. [2018-01-24 20:13:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:13:53,939 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:13:53,939 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:13:53,939 INFO L371 AbstractCegarLoop]: === Iteration 3 === [l3_destroyErr0RequiresViolation, l3_destroyErr3RequiresViolation, l3_destroyErr1RequiresViolation, l3_destroyErr2RequiresViolation, l3_destroyErr4RequiresViolation, l3_destroyErr5RequiresViolation, l0_insertErr3RequiresViolation, l0_insertErr1RequiresViolation, l0_insertErr5RequiresViolation, l0_insertErr2RequiresViolation, l0_insertErr4RequiresViolation, l0_insertErr0RequiresViolation, l4_destroyErr4RequiresViolation, l4_destroyErr6RequiresViolation, l4_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr7RequiresViolation, l4_destroyErr0RequiresViolation, l4_destroyErr5RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, l3_insertErr4RequiresViolation, l3_insertErr0RequiresViolation, l3_insertErr5RequiresViolation, l3_insertErr3RequiresViolation, l3_insertErr1RequiresViolation, l3_insertErr2RequiresViolation, l1_insertErr4RequiresViolation, l1_insertErr0RequiresViolation, l1_insertErr2RequiresViolation, l1_insertErr3RequiresViolation, l1_insertErr1RequiresViolation, l1_insertErr5RequiresViolation, l0_destroyErr5RequiresViolation, l0_destroyErr3RequiresViolation, l0_destroyErr1RequiresViolation, l0_destroyErr0RequiresViolation, l0_destroyErr4RequiresViolation, l0_destroyErr2RequiresViolation, calloc_modelErr0RequiresViolation, calloc_modelErr1RequiresViolation, l4_insertErr5RequiresViolation, l4_insertErr3RequiresViolation, l4_insertErr4RequiresViolation, l4_insertErr6RequiresViolation, l4_insertErr2RequiresViolation, l4_insertErr0RequiresViolation, l4_insertErr1RequiresViolation, l4_insertErr7RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, l1_destroyErr2RequiresViolation, l1_destroyErr4RequiresViolation, l1_destroyErr0RequiresViolation, l1_destroyErr1RequiresViolation, l1_destroyErr5RequiresViolation, l1_destroyErr3RequiresViolation, l2_destroyErr1RequiresViolation, l2_destroyErr0RequiresViolation, l2_destroyErr2RequiresViolation, l2_destroyErr4RequiresViolation, l2_destroyErr5RequiresViolation, l2_destroyErr3RequiresViolation]=== [2018-01-24 20:13:53,940 INFO L82 PathProgramCache]: Analyzing trace with hash -416211489, now seen corresponding path program 1 times [2018-01-24 20:13:53,940 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:13:53,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:13:53,941 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:13:53,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:13:53,941 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:13:53,956 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 20:13:53,956 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 20:13:53,956 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-24 20:13:53,962 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:13:53,962 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 20:13:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:13:53,995 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-24 20:13:53,996 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 20:13:53,996 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:13:53,996 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 20:13:54,001 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:13:54,001 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 20:13:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:13:54,035 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 20:13:54,070 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 20:13:54,071 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 20:13:54,073 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 20:13:54,073 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 20:13:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:13:54,084 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 20:13:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:13:54,120 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:13:54,120 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-01-24 20:13:54,120 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:13:54,121 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:13:54,121 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:13:54,121 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:13:54,121 INFO L87 Difference]: Start difference. First operand 337 states and 415 transitions. Second operand 4 states. [2018-01-24 20:13:54,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:13:54,341 INFO L93 Difference]: Finished difference Result 337 states and 415 transitions. [2018-01-24 20:13:54,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:13:54,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 20:13:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:13:54,344 INFO L225 Difference]: With dead ends: 337 [2018-01-24 20:13:54,345 INFO L226 Difference]: Without dead ends: 336 [2018-01-24 20:13:54,345 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:13:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-01-24 20:13:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2018-01-24 20:13:54,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-01-24 20:13:54,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 414 transitions. [2018-01-24 20:13:54,371 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 414 transitions. Word has length 17 [2018-01-24 20:13:54,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:13:54,372 INFO L432 AbstractCegarLoop]: Abstraction has 336 states and 414 transitions. [2018-01-24 20:13:54,372 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:13:54,372 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 414 transitions. [2018-01-24 20:13:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:13:54,373 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:13:54,373 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:13:54,373 INFO L371 AbstractCegarLoop]: === Iteration 4 === [l3_destroyErr0RequiresViolation, l3_destroyErr3RequiresViolation, l3_destroyErr1RequiresViolation, l3_destroyErr2RequiresViolation, l3_destroyErr4RequiresViolation, l3_destroyErr5RequiresViolation, l0_insertErr3RequiresViolation, l0_insertErr1RequiresViolation, l0_insertErr5RequiresViolation, l0_insertErr2RequiresViolation, l0_insertErr4RequiresViolation, l0_insertErr0RequiresViolation, l4_destroyErr4RequiresViolation, l4_destroyErr6RequiresViolation, l4_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr7RequiresViolation, l4_destroyErr0RequiresViolation, l4_destroyErr5RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, l3_insertErr4RequiresViolation, l3_insertErr0RequiresViolation, l3_insertErr5RequiresViolation, l3_insertErr3RequiresViolation, l3_insertErr1RequiresViolation, l3_insertErr2RequiresViolation, l1_insertErr4RequiresViolation, l1_insertErr0RequiresViolation, l1_insertErr2RequiresViolation, l1_insertErr3RequiresViolation, l1_insertErr1RequiresViolation, l1_insertErr5RequiresViolation, l0_destroyErr5RequiresViolation, l0_destroyErr3RequiresViolation, l0_destroyErr1RequiresViolation, l0_destroyErr0RequiresViolation, l0_destroyErr4RequiresViolation, l0_destroyErr2RequiresViolation, calloc_modelErr0RequiresViolation, calloc_modelErr1RequiresViolation, l4_insertErr5RequiresViolation, l4_insertErr3RequiresViolation, l4_insertErr4RequiresViolation, l4_insertErr6RequiresViolation, l4_insertErr2RequiresViolation, l4_insertErr0RequiresViolation, l4_insertErr1RequiresViolation, l4_insertErr7RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, l1_destroyErr2RequiresViolation, l1_destroyErr4RequiresViolation, l1_destroyErr0RequiresViolation, l1_destroyErr1RequiresViolation, l1_destroyErr5RequiresViolation, l1_destroyErr3RequiresViolation, l2_destroyErr1RequiresViolation, l2_destroyErr0RequiresViolation, l2_destroyErr2RequiresViolation, l2_destroyErr4RequiresViolation, l2_destroyErr5RequiresViolation, l2_destroyErr3RequiresViolation]=== [2018-01-24 20:13:54,373 INFO L82 PathProgramCache]: Analyzing trace with hash -416211488, now seen corresponding path program 1 times [2018-01-24 20:13:54,374 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:13:54,375 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:13:54,375 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:13:54,375 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:13:54,375 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:13:54,390 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 20:13:54,391 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 20:13:54,391 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-24 20:13:54,398 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:13:54,398 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 20:13:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:13:54,443 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-24 20:13:54,444 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 20:13:54,444 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:13:54,444 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 20:13:54,452 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:13:54,452 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 20:13:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:13:54,479 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 20:13:54,489 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2018-01-24 20:13:54,489 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 20:13:54,507 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-01-24 20:13:54,508 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 20:13:54,524 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 20:13:54,524 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:44 [2018-01-24 20:13:54,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:13:54,565 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 20:13:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:13:54,643 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:13:54,643 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2018-01-24 20:13:54,644 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:13:54,644 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:13:54,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:13:54,644 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:13:54,644 INFO L87 Difference]: Start difference. First operand 336 states and 414 transitions. Second operand 4 states. [2018-01-24 20:13:54,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:13:54,867 INFO L93 Difference]: Finished difference Result 336 states and 414 transitions. [2018-01-24 20:13:54,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:13:54,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 20:13:54,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:13:54,869 INFO L225 Difference]: With dead ends: 336 [2018-01-24 20:13:54,869 INFO L226 Difference]: Without dead ends: 335 [2018-01-24 20:13:54,870 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:13:54,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-01-24 20:13:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-01-24 20:13:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-01-24 20:13:54,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 413 transitions. [2018-01-24 20:13:54,886 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 413 transitions. Word has length 17 [2018-01-24 20:13:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:13:54,886 INFO L432 AbstractCegarLoop]: Abstraction has 335 states and 413 transitions. [2018-01-24 20:13:54,887 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:13:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 413 transitions. [2018-01-24 20:13:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-01-24 20:13:54,891 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:13:54,891 INFO L322 BasicCegarLoop]: trace histogram [6, 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] [2018-01-24 20:13:54,891 INFO L371 AbstractCegarLoop]: === Iteration 5 === [l3_destroyErr0RequiresViolation, l3_destroyErr3RequiresViolation, l3_destroyErr1RequiresViolation, l3_destroyErr2RequiresViolation, l3_destroyErr4RequiresViolation, l3_destroyErr5RequiresViolation, l0_insertErr3RequiresViolation, l0_insertErr1RequiresViolation, l0_insertErr5RequiresViolation, l0_insertErr2RequiresViolation, l0_insertErr4RequiresViolation, l0_insertErr0RequiresViolation, l4_destroyErr4RequiresViolation, l4_destroyErr6RequiresViolation, l4_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr7RequiresViolation, l4_destroyErr0RequiresViolation, l4_destroyErr5RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, l3_insertErr4RequiresViolation, l3_insertErr0RequiresViolation, l3_insertErr5RequiresViolation, l3_insertErr3RequiresViolation, l3_insertErr1RequiresViolation, l3_insertErr2RequiresViolation, l1_insertErr4RequiresViolation, l1_insertErr0RequiresViolation, l1_insertErr2RequiresViolation, l1_insertErr3RequiresViolation, l1_insertErr1RequiresViolation, l1_insertErr5RequiresViolation, l0_destroyErr5RequiresViolation, l0_destroyErr3RequiresViolation, l0_destroyErr1RequiresViolation, l0_destroyErr0RequiresViolation, l0_destroyErr4RequiresViolation, l0_destroyErr2RequiresViolation, calloc_modelErr0RequiresViolation, calloc_modelErr1RequiresViolation, l4_insertErr5RequiresViolation, l4_insertErr3RequiresViolation, l4_insertErr4RequiresViolation, l4_insertErr6RequiresViolation, l4_insertErr2RequiresViolation, l4_insertErr0RequiresViolation, l4_insertErr1RequiresViolation, l4_insertErr7RequiresViolation, ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, l1_destroyErr2RequiresViolation, l1_destroyErr4RequiresViolation, l1_destroyErr0RequiresViolation, l1_destroyErr1RequiresViolation, l1_destroyErr5RequiresViolation, l1_destroyErr3RequiresViolation, l2_destroyErr1RequiresViolation, l2_destroyErr0RequiresViolation, l2_destroyErr2RequiresViolation, l2_destroyErr4RequiresViolation, l2_destroyErr5RequiresViolation, l2_destroyErr3RequiresViolation]=== [2018-01-24 20:13:54,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1095590031, now seen corresponding path program 1 times [2018-01-24 20:13:54,892 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:13:54,892 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:13:54,893 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:13:54,893 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:13:54,893 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:13:54,914 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 20:13:54,914 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 20:13:54,914 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-24 20:13:54,926 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:13:54,926 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 20:13:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:13:54,980 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2018-01-24 20:13:54,982 INFO L201 CegarAbsIntRunner]: [84], [172], [174], [178], [201], [202], [208], [209], [210], [212], [216], [239], [241], [245], [268], [270], [274], [297], [298], [299], [303], [304], [305], [307], [310], [324], [326], [329], [331], [332], [333], [334], [337], [423], [439], [440], [441], [443], [444], [445], [447], [448], [449], [451], [452], [453], [455], [456], [457], [458], [459], [460], [461], [462], [465], [466], [467] [2018-01-24 20:13:55,026 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:13:55,027 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