java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/memsafety/test-0237_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:03:45,098 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:03:45,100 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:03:45,112 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:03:45,112 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:03:45,113 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:03:45,114 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:03:45,116 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:03:45,117 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:03:45,118 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:03:45,119 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:03:45,119 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:03:45,120 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:03:45,121 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:03:45,121 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:03:45,124 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:03:45,126 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:03:45,128 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:03:45,130 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:03:45,131 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:03:45,134 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:03:45,134 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:03:45,134 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:03:45,135 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:03:45,136 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:03:45,138 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:03:45,138 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:03:45,139 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:03:45,139 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:03:45,139 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:03:45,140 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:03:45,140 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-25 03:03:45,150 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:03:45,151 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:03:45,152 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:03:45,152 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:03:45,152 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:03:45,152 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:03:45,153 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:03:45,153 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:03:45,153 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:03:45,154 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:03:45,154 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:03:45,154 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:03:45,154 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:03:45,155 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:03:45,155 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:03:45,155 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:03:45,155 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:03:45,155 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:03:45,156 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:03:45,156 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:03:45,156 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:03:45,156 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:03:45,156 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:03:45,157 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:03:45,157 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:03:45,157 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:03:45,157 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:03:45,157 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:03:45,158 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:03:45,158 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:03:45,158 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:03:45,158 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:03:45,158 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:03:45,159 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:03:45,159 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:03:45,160 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:03:45,160 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:03:45,199 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:03:45,213 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:03:45,217 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:03:45,219 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:03:45,219 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:03:45,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0237_true-valid-memsafety.i [2018-01-25 03:03:45,440 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:03:45,446 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:03:45,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:03:45,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:03:45,453 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:03:45,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:03:45" (1/1) ... [2018-01-25 03:03:45,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ae6c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:03:45, skipping insertion in model container [2018-01-25 03:03:45,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:03:45" (1/1) ... [2018-01-25 03:03:45,471 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:03:45,517 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:03:45,654 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:03:45,679 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:03:45,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:03:45 WrapperNode [2018-01-25 03:03:45,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:03:45,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:03:45,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:03:45,690 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:03:45,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:03:45" (1/1) ... [2018-01-25 03:03:45,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:03:45" (1/1) ... [2018-01-25 03:03:45,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:03:45" (1/1) ... [2018-01-25 03:03:45,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:03:45" (1/1) ... [2018-01-25 03:03:45,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:03:45" (1/1) ... [2018-01-25 03:03:45,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:03:45" (1/1) ... [2018-01-25 03:03:45,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:03:45" (1/1) ... [2018-01-25 03:03:45,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:03:45,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:03:45,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:03:45,736 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:03:45,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:03:45" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:03:45,791 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:03:45,792 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:03:45,792 INFO L136 BoogieDeclarations]: Found implementation of procedure calloc_model [2018-01-25 03:03:45,792 INFO L136 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2018-01-25 03:03:45,792 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_insert [2018-01-25 03:03:45,792 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_insert [2018-01-25 03:03:45,792 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_insert [2018-01-25 03:03:45,792 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_insert [2018-01-25 03:03:45,792 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_insert [2018-01-25 03:03:45,792 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_destroy [2018-01-25 03:03:45,792 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_destroy [2018-01-25 03:03:45,793 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_destroy [2018-01-25 03:03:45,793 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_destroy [2018-01-25 03:03:45,793 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_destroy [2018-01-25 03:03:45,793 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:03:45,793 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:03:45,793 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:03:45,793 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:03:45,793 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:03:45,793 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:03:45,793 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-25 03:03:45,794 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-25 03:03:45,794 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:03:45,794 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:03:45,794 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-25 03:03:45,794 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-25 03:03:45,794 INFO L128 BoogieDeclarations]: Found specification of procedure calloc_model [2018-01-25 03:03:45,794 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:03:45,794 INFO L128 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2018-01-25 03:03:45,794 INFO L128 BoogieDeclarations]: Found specification of procedure l4_insert [2018-01-25 03:03:45,795 INFO L128 BoogieDeclarations]: Found specification of procedure l3_insert [2018-01-25 03:03:45,795 INFO L128 BoogieDeclarations]: Found specification of procedure l2_insert [2018-01-25 03:03:45,795 INFO L128 BoogieDeclarations]: Found specification of procedure l1_insert [2018-01-25 03:03:45,795 INFO L128 BoogieDeclarations]: Found specification of procedure l0_insert [2018-01-25 03:03:45,795 INFO L128 BoogieDeclarations]: Found specification of procedure l4_destroy [2018-01-25 03:03:45,795 INFO L128 BoogieDeclarations]: Found specification of procedure l3_destroy [2018-01-25 03:03:45,795 INFO L128 BoogieDeclarations]: Found specification of procedure l2_destroy [2018-01-25 03:03:45,795 INFO L128 BoogieDeclarations]: Found specification of procedure l1_destroy [2018-01-25 03:03:45,796 INFO L128 BoogieDeclarations]: Found specification of procedure l0_destroy [2018-01-25 03:03:45,796 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:03:45,796 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:03:45,796 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:03:46,157 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-25 03:03:47,926 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:03:47,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:03:47 BoogieIcfgContainer [2018-01-25 03:03:47,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:03:47,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:03:47,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:03:47,929 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:03:47,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:03:45" (1/3) ... [2018-01-25 03:03:47,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532cf028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:03:47, skipping insertion in model container [2018-01-25 03:03:47,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:03:45" (2/3) ... [2018-01-25 03:03:47,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532cf028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:03:47, skipping insertion in model container [2018-01-25 03:03:47,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:03:47" (3/3) ... [2018-01-25 03:03:47,933 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0237_true-valid-memsafety.i [2018-01-25 03:03:47,940 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:03:47,946 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 83 error locations. [2018-01-25 03:03:48,002 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:03:48,002 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:03:48,002 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:03:48,002 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:03:48,002 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:03:48,003 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:03:48,003 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:03:48,003 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:03:48,004 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:03:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states. [2018-01-25 03:03:48,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-25 03:03:48,033 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:03:48,049 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-25 03:03:48,049 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_insertErr7RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr6RequiresViolation, l2_insertErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation, l3_insertErr6RequiresViolation, l3_insertErr4RequiresViolation, l3_insertErr0RequiresViolation, l3_insertErr5RequiresViolation, l3_insertErr3RequiresViolation, l3_insertErr1RequiresViolation, l3_insertErr7RequiresViolation, l3_insertErr2RequiresViolation, l1_insertErr4RequiresViolation, l1_insertErr0RequiresViolation, l1_insertErr6RequiresViolation, l1_insertErr2RequiresViolation, l1_insertErr3RequiresViolation, l1_insertErr1RequiresViolation, l1_insertErr7RequiresViolation, l1_insertErr5RequiresViolation, l0_destroyErr5RequiresViolation, l0_destroyErr3RequiresViolation, l0_destroyErr1RequiresViolation, l0_destroyErr0RequiresViolation, l0_destroyErr4RequiresViolation, l0_destroyErr2RequiresViolation, calloc_modelErr0RequiresViolation, calloc_modelErr1RequiresViolation, l4_insertErr3RequiresViolation, l4_insertErr13RequiresViolation, l4_insertErr6RequiresViolation, l4_insertErr8RequiresViolation, l4_insertErr10RequiresViolation, l4_insertErr1RequiresViolation, l4_insertErr5RequiresViolation, l4_insertErr9RequiresViolation, l4_insertErr12RequiresViolation, l4_insertErr4RequiresViolation, l4_insertErr2RequiresViolation, l4_insertErr0RequiresViolation, l4_insertErr11RequiresViolation, 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]=== [2018-01-25 03:03:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash 12677088, now seen corresponding path program 1 times [2018-01-25 03:03:48,059 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:03:48,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:03:48,112 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:03:48,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:03:48,112 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:03:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:03:48,153 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:03:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:03:48,204 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:03:48,286 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:03:48,286 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:03:48,290 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:03:48,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:03:48,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:03:48,308 INFO L87 Difference]: Start difference. First operand 250 states. Second operand 3 states. [2018-01-25 03:03:48,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:03:48,632 INFO L93 Difference]: Finished difference Result 521 states and 603 transitions. [2018-01-25 03:03:48,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:03:48,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-25 03:03:48,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:03:48,651 INFO L225 Difference]: With dead ends: 521 [2018-01-25 03:03:48,651 INFO L226 Difference]: Without dead ends: 276 [2018-01-25 03:03:48,659 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:03:48,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-01-25 03:03:48,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 245. [2018-01-25 03:03:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-01-25 03:03:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 260 transitions. [2018-01-25 03:03:48,720 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 260 transitions. Word has length 4 [2018-01-25 03:03:48,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:03:48,721 INFO L432 AbstractCegarLoop]: Abstraction has 245 states and 260 transitions. [2018-01-25 03:03:48,721 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:03:48,721 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 260 transitions. [2018-01-25 03:03:48,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-25 03:03:48,722 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:03:48,722 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-25 03:03:48,722 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_insertErr7RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr6RequiresViolation, l2_insertErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation, l3_insertErr6RequiresViolation, l3_insertErr4RequiresViolation, l3_insertErr0RequiresViolation, l3_insertErr5RequiresViolation, l3_insertErr3RequiresViolation, l3_insertErr1RequiresViolation, l3_insertErr7RequiresViolation, l3_insertErr2RequiresViolation, l1_insertErr4RequiresViolation, l1_insertErr0RequiresViolation, l1_insertErr6RequiresViolation, l1_insertErr2RequiresViolation, l1_insertErr3RequiresViolation, l1_insertErr1RequiresViolation, l1_insertErr7RequiresViolation, l1_insertErr5RequiresViolation, l0_destroyErr5RequiresViolation, l0_destroyErr3RequiresViolation, l0_destroyErr1RequiresViolation, l0_destroyErr0RequiresViolation, l0_destroyErr4RequiresViolation, l0_destroyErr2RequiresViolation, calloc_modelErr0RequiresViolation, calloc_modelErr1RequiresViolation, l4_insertErr3RequiresViolation, l4_insertErr13RequiresViolation, l4_insertErr6RequiresViolation, l4_insertErr8RequiresViolation, l4_insertErr10RequiresViolation, l4_insertErr1RequiresViolation, l4_insertErr5RequiresViolation, l4_insertErr9RequiresViolation, l4_insertErr12RequiresViolation, l4_insertErr4RequiresViolation, l4_insertErr2RequiresViolation, l4_insertErr0RequiresViolation, l4_insertErr11RequiresViolation, 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]=== [2018-01-25 03:03:48,722 INFO L82 PathProgramCache]: Analyzing trace with hash 12677089, now seen corresponding path program 1 times [2018-01-25 03:03:48,723 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:03:48,724 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:03:48,724 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:03:48,724 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:03:48,724 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:03:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:03:48,744 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:03:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:03:48,797 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:03:48,797 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:03:48,797 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:03:48,799 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 03:03:48,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 03:03:48,799 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:03:48,799 INFO L87 Difference]: Start difference. First operand 245 states and 260 transitions. Second operand 3 states. [2018-01-25 03:03:48,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:03:48,948 INFO L93 Difference]: Finished difference Result 253 states and 271 transitions. [2018-01-25 03:03:48,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 03:03:48,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-25 03:03:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:03:48,951 INFO L225 Difference]: With dead ends: 253 [2018-01-25 03:03:48,952 INFO L226 Difference]: Without dead ends: 252 [2018-01-25 03:03:48,953 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 03:03:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-01-25 03:03:48,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 244. [2018-01-25 03:03:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-01-25 03:03:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 259 transitions. [2018-01-25 03:03:48,975 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 259 transitions. Word has length 4 [2018-01-25 03:03:48,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:03:48,975 INFO L432 AbstractCegarLoop]: Abstraction has 244 states and 259 transitions. [2018-01-25 03:03:48,975 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 03:03:48,975 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 259 transitions. [2018-01-25 03:03:48,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:03:48,976 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:03:48,976 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:03:48,976 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_insertErr7RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr6RequiresViolation, l2_insertErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation, l3_insertErr6RequiresViolation, l3_insertErr4RequiresViolation, l3_insertErr0RequiresViolation, l3_insertErr5RequiresViolation, l3_insertErr3RequiresViolation, l3_insertErr1RequiresViolation, l3_insertErr7RequiresViolation, l3_insertErr2RequiresViolation, l1_insertErr4RequiresViolation, l1_insertErr0RequiresViolation, l1_insertErr6RequiresViolation, l1_insertErr2RequiresViolation, l1_insertErr3RequiresViolation, l1_insertErr1RequiresViolation, l1_insertErr7RequiresViolation, l1_insertErr5RequiresViolation, l0_destroyErr5RequiresViolation, l0_destroyErr3RequiresViolation, l0_destroyErr1RequiresViolation, l0_destroyErr0RequiresViolation, l0_destroyErr4RequiresViolation, l0_destroyErr2RequiresViolation, calloc_modelErr0RequiresViolation, calloc_modelErr1RequiresViolation, l4_insertErr3RequiresViolation, l4_insertErr13RequiresViolation, l4_insertErr6RequiresViolation, l4_insertErr8RequiresViolation, l4_insertErr10RequiresViolation, l4_insertErr1RequiresViolation, l4_insertErr5RequiresViolation, l4_insertErr9RequiresViolation, l4_insertErr12RequiresViolation, l4_insertErr4RequiresViolation, l4_insertErr2RequiresViolation, l4_insertErr0RequiresViolation, l4_insertErr11RequiresViolation, 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]=== [2018-01-25 03:03:48,977 INFO L82 PathProgramCache]: Analyzing trace with hash -144742640, now seen corresponding path program 1 times [2018-01-25 03:03:48,977 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:03:48,978 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:03:48,978 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:03:48,978 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:03:48,979 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:03:49,000 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-25 03:03:49,001 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-25 03:03:49,001 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 [2018-01-25 03:03:49,010 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:03:49,011 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-25 03:03:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:03:49,053 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-25 03:03:49,054 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-25 03:03:49,054 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:03:49,054 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 [2018-01-25 03:03:49,060 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:03:49,060 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 03:03:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:03:49,091 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 03:03:49,126 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 [2018-01-25 03:03:49,128 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-25 03:03:49,130 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-25 03:03:49,130 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-25 03:03:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:03:49,138 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 03:03:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:03:49,177 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:03:49,177 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-01-25 03:03:49,177 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:03:49,177 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:03:49,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:03:49,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 03:03:49,178 INFO L87 Difference]: Start difference. First operand 244 states and 259 transitions. Second operand 4 states. [2018-01-25 03:03:49,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:03:49,472 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2018-01-25 03:03:49,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:03:49,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-25 03:03:49,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:03:49,476 INFO L225 Difference]: With dead ends: 244 [2018-01-25 03:03:49,476 INFO L226 Difference]: Without dead ends: 243 [2018-01-25 03:03:49,477 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 [2018-01-25 03:03:49,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-25 03:03:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-01-25 03:03:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-01-25 03:03:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 258 transitions. [2018-01-25 03:03:49,495 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 258 transitions. Word has length 17 [2018-01-25 03:03:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:03:49,495 INFO L432 AbstractCegarLoop]: Abstraction has 243 states and 258 transitions. [2018-01-25 03:03:49,495 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:03:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 258 transitions. [2018-01-25 03:03:49,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-25 03:03:49,496 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:03:49,496 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:03:49,497 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_insertErr7RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr6RequiresViolation, l2_insertErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation, l3_insertErr6RequiresViolation, l3_insertErr4RequiresViolation, l3_insertErr0RequiresViolation, l3_insertErr5RequiresViolation, l3_insertErr3RequiresViolation, l3_insertErr1RequiresViolation, l3_insertErr7RequiresViolation, l3_insertErr2RequiresViolation, l1_insertErr4RequiresViolation, l1_insertErr0RequiresViolation, l1_insertErr6RequiresViolation, l1_insertErr2RequiresViolation, l1_insertErr3RequiresViolation, l1_insertErr1RequiresViolation, l1_insertErr7RequiresViolation, l1_insertErr5RequiresViolation, l0_destroyErr5RequiresViolation, l0_destroyErr3RequiresViolation, l0_destroyErr1RequiresViolation, l0_destroyErr0RequiresViolation, l0_destroyErr4RequiresViolation, l0_destroyErr2RequiresViolation, calloc_modelErr0RequiresViolation, calloc_modelErr1RequiresViolation, l4_insertErr3RequiresViolation, l4_insertErr13RequiresViolation, l4_insertErr6RequiresViolation, l4_insertErr8RequiresViolation, l4_insertErr10RequiresViolation, l4_insertErr1RequiresViolation, l4_insertErr5RequiresViolation, l4_insertErr9RequiresViolation, l4_insertErr12RequiresViolation, l4_insertErr4RequiresViolation, l4_insertErr2RequiresViolation, l4_insertErr0RequiresViolation, l4_insertErr11RequiresViolation, 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]=== [2018-01-25 03:03:49,497 INFO L82 PathProgramCache]: Analyzing trace with hash -144742639, now seen corresponding path program 1 times [2018-01-25 03:03:49,497 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:03:49,498 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:03:49,498 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:03:49,499 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:03:49,499 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:03:49,516 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-25 03:03:49,516 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-25 03:03:49,516 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 [2018-01-25 03:03:49,522 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:03:49,523 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-25 03:03:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:03:49,566 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-25 03:03:49,567 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-25 03:03:49,567 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:03:49,567 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 [2018-01-25 03:03:49,573 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:03:49,573 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-25 03:03:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:03:49,599 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-25 03:03:49,613 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 [2018-01-25 03:03:49,614 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-25 03:03:49,635 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 [2018-01-25 03:03:49,635 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-25 03:03:49,652 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-25 03:03:49,652 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:44 [2018-01-25 03:03:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:03:49,695 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-25 03:03:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:03:49,779 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:03:49,779 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2018-01-25 03:03:49,780 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:03:49,780 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 03:03:49,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 03:03:49,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:03:49,780 INFO L87 Difference]: Start difference. First operand 243 states and 258 transitions. Second operand 4 states. [2018-01-25 03:03:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:03:50,028 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2018-01-25 03:03:50,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 03:03:50,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-25 03:03:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:03:50,031 INFO L225 Difference]: With dead ends: 243 [2018-01-25 03:03:50,031 INFO L226 Difference]: Without dead ends: 242 [2018-01-25 03:03:50,031 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 [2018-01-25 03:03:50,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-25 03:03:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2018-01-25 03:03:50,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-01-25 03:03:50,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 257 transitions. [2018-01-25 03:03:50,045 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 257 transitions. Word has length 17 [2018-01-25 03:03:50,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:03:50,046 INFO L432 AbstractCegarLoop]: Abstraction has 242 states and 257 transitions. [2018-01-25 03:03:50,046 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 03:03:50,046 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 257 transitions. [2018-01-25 03:03:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-01-25 03:03:50,050 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:03:50,051 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] [2018-01-25 03:03:50,051 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_insertErr7RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr6RequiresViolation, l2_insertErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation, l3_insertErr6RequiresViolation, l3_insertErr4RequiresViolation, l3_insertErr0RequiresViolation, l3_insertErr5RequiresViolation, l3_insertErr3RequiresViolation, l3_insertErr1RequiresViolation, l3_insertErr7RequiresViolation, l3_insertErr2RequiresViolation, l1_insertErr4RequiresViolation, l1_insertErr0RequiresViolation, l1_insertErr6RequiresViolation, l1_insertErr2RequiresViolation, l1_insertErr3RequiresViolation, l1_insertErr1RequiresViolation, l1_insertErr7RequiresViolation, l1_insertErr5RequiresViolation, l0_destroyErr5RequiresViolation, l0_destroyErr3RequiresViolation, l0_destroyErr1RequiresViolation, l0_destroyErr0RequiresViolation, l0_destroyErr4RequiresViolation, l0_destroyErr2RequiresViolation, calloc_modelErr0RequiresViolation, calloc_modelErr1RequiresViolation, l4_insertErr3RequiresViolation, l4_insertErr13RequiresViolation, l4_insertErr6RequiresViolation, l4_insertErr8RequiresViolation, l4_insertErr10RequiresViolation, l4_insertErr1RequiresViolation, l4_insertErr5RequiresViolation, l4_insertErr9RequiresViolation, l4_insertErr12RequiresViolation, l4_insertErr4RequiresViolation, l4_insertErr2RequiresViolation, l4_insertErr0RequiresViolation, l4_insertErr11RequiresViolation, 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]=== [2018-01-25 03:03:50,051 INFO L82 PathProgramCache]: Analyzing trace with hash -515979882, now seen corresponding path program 1 times [2018-01-25 03:03:50,051 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:03:50,052 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:03:50,052 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:03:50,052 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:03:50,052 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:03:50,076 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-25 03:03:50,076 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-25 03:03:50,076 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 [2018-01-25 03:03:50,086 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:03:50,086 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-25 03:03:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:03:50,202 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2018-01-25 03:03:50,204 INFO L201 CegarAbsIntRunner]: [60], [107], [109], [113], [136], [137], [143], [144], [145], [147], [151], [177], [179], [183], [209], [211], [215], [241], [242], [243], [247], [248], [249], [251], [254], [278], [280], [283], [285], [286], [287], [288], [291], [353], [359], [360], [361], [363], [364], [365], [367], [368], [369], [371], [372], [373], [375], [376], [377], [378], [379], [380], [381], [382], [385], [386], [387] [2018-01-25 03:03:50,249 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:03:50,250 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