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-0234_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:09:07,724 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:09:07,726 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:09:07,741 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:09:07,741 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:09:07,742 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:09:07,743 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:09:07,745 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:09:07,747 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:09:07,748 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:09:07,749 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:09:07,749 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:09:07,750 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:09:07,751 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:09:07,752 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:09:07,754 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:09:07,756 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:09:07,758 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:09:07,760 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:09:07,761 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:09:07,763 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:09:07,764 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:09:07,764 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:09:07,765 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:09:07,766 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:09:07,767 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:09:07,767 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:09:07,768 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:09:07,768 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:09:07,768 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:09:07,769 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:09:07,769 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 20:09:07,779 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:09:07,779 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:09:07,780 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:09:07,780 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:09:07,780 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:09:07,781 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:09:07,781 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:09:07,781 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:09:07,781 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:09:07,782 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:09:07,782 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:09:07,782 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:09:07,782 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:09:07,783 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:09:07,783 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:09:07,783 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:09:07,783 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:09:07,783 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:09:07,784 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:09:07,784 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:09:07,784 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:09:07,784 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:09:07,784 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:09:07,785 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:09:07,785 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:09:07,785 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:09:07,785 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:09:07,785 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:09:07,786 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:09:07,786 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:09:07,786 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:09:07,786 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:09:07,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:09:07,787 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:09:07,787 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:09:07,788 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:09:07,788 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:09:07,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:09:07,834 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:09:07,839 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:09:07,840 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:09:07,841 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:09:07,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0234_false-valid-memtrack.i [2018-01-24 20:09:08,035 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:09:08,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:09:08,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:09:08,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:09:08,049 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:09:08,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:09:08" (1/1) ... [2018-01-24 20:09:08,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd00cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:08, skipping insertion in model container [2018-01-24 20:09:08,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:09:08" (1/1) ... [2018-01-24 20:09:08,073 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:09:08,120 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:09:08,242 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:09:08,266 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:09:08,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:08 WrapperNode [2018-01-24 20:09:08,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:09:08,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:09:08,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:09:08,280 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:09:08,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:08" (1/1) ... [2018-01-24 20:09:08,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:08" (1/1) ... [2018-01-24 20:09:08,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:08" (1/1) ... [2018-01-24 20:09:08,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:08" (1/1) ... [2018-01-24 20:09:08,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:08" (1/1) ... [2018-01-24 20:09:08,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:08" (1/1) ... [2018-01-24 20:09:08,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:08" (1/1) ... [2018-01-24 20:09:08,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:09:08,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:09:08,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:09:08,322 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:09:08,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:08" (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 20:09:08,369 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:09:08,369 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:09:08,369 INFO L136 BoogieDeclarations]: Found implementation of procedure calloc_model [2018-01-24 20:09:08,369 INFO L136 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2018-01-24 20:09:08,370 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_insert [2018-01-24 20:09:08,370 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_insert [2018-01-24 20:09:08,370 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_insert [2018-01-24 20:09:08,370 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_insert [2018-01-24 20:09:08,370 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_insert [2018-01-24 20:09:08,370 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_destroy [2018-01-24 20:09:08,371 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_destroy [2018-01-24 20:09:08,371 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_destroy [2018-01-24 20:09:08,371 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_destroy [2018-01-24 20:09:08,371 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_destroy [2018-01-24 20:09:08,371 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:09:08,371 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:09:08,372 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:09:08,372 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:09:08,372 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:09:08,372 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:09:08,372 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-24 20:09:08,372 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-24 20:09:08,373 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:09:08,373 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:09:08,373 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-24 20:09:08,373 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-24 20:09:08,373 INFO L128 BoogieDeclarations]: Found specification of procedure calloc_model [2018-01-24 20:09:08,373 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:09:08,374 INFO L128 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2018-01-24 20:09:08,374 INFO L128 BoogieDeclarations]: Found specification of procedure l4_insert [2018-01-24 20:09:08,374 INFO L128 BoogieDeclarations]: Found specification of procedure l3_insert [2018-01-24 20:09:08,374 INFO L128 BoogieDeclarations]: Found specification of procedure l2_insert [2018-01-24 20:09:08,374 INFO L128 BoogieDeclarations]: Found specification of procedure l1_insert [2018-01-24 20:09:08,374 INFO L128 BoogieDeclarations]: Found specification of procedure l0_insert [2018-01-24 20:09:08,374 INFO L128 BoogieDeclarations]: Found specification of procedure l4_destroy [2018-01-24 20:09:08,375 INFO L128 BoogieDeclarations]: Found specification of procedure l3_destroy [2018-01-24 20:09:08,375 INFO L128 BoogieDeclarations]: Found specification of procedure l2_destroy [2018-01-24 20:09:08,375 INFO L128 BoogieDeclarations]: Found specification of procedure l1_destroy [2018-01-24 20:09:08,375 INFO L128 BoogieDeclarations]: Found specification of procedure l0_destroy [2018-01-24 20:09:08,375 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:09:08,375 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:09:08,376 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:09:08,701 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-24 20:09:08,989 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:09:08,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:09:08 BoogieIcfgContainer [2018-01-24 20:09:08,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:09:08,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:09:08,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:09:08,993 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:09:08,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:09:08" (1/3) ... [2018-01-24 20:09:08,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3320cba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:09:08, skipping insertion in model container [2018-01-24 20:09:08,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:08" (2/3) ... [2018-01-24 20:09:08,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3320cba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:09:08, skipping insertion in model container [2018-01-24 20:09:08,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:09:08" (3/3) ... [2018-01-24 20:09:08,996 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0234_false-valid-memtrack.i [2018-01-24 20:09:09,003 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:09:09,010 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 67 error locations. [2018-01-24 20:09:09,051 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:09:09,052 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:09:09,052 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:09:09,052 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:09:09,052 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:09:09,052 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:09:09,052 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:09:09,052 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:09:09,053 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:09:09,075 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2018-01-24 20:09:09,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 20:09:09,080 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:09:09,081 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 20:09:09,081 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_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr0RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation, 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 20:09:09,085 INFO L82 PathProgramCache]: Analyzing trace with hash 11876704, now seen corresponding path program 1 times [2018-01-24 20:09:09,086 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:09:09,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:09,127 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:09,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:09,127 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:09:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:09,167 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:09:09,230 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 20:09:09,233 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:09:09,233 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:09:09,233 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:09:09,236 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:09:09,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:09:09,335 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:09:09,337 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 3 states. [2018-01-24 20:09:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:09:09,629 INFO L93 Difference]: Finished difference Result 470 states and 552 transitions. [2018-01-24 20:09:09,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:09:09,631 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 20:09:09,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:09:09,649 INFO L225 Difference]: With dead ends: 470 [2018-01-24 20:09:09,650 INFO L226 Difference]: Without dead ends: 251 [2018-01-24 20:09:09,656 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 20:09:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-01-24 20:09:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 219. [2018-01-24 20:09:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-01-24 20:09:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 234 transitions. [2018-01-24 20:09:09,715 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 234 transitions. Word has length 4 [2018-01-24 20:09:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:09:09,716 INFO L432 AbstractCegarLoop]: Abstraction has 219 states and 234 transitions. [2018-01-24 20:09:09,716 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:09:09,716 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 234 transitions. [2018-01-24 20:09:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 20:09:09,716 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:09:09,716 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 20:09:09,716 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_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr0RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation, 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 20:09:09,717 INFO L82 PathProgramCache]: Analyzing trace with hash 11876705, now seen corresponding path program 1 times [2018-01-24 20:09:09,717 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:09:09,719 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:09,719 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:09,719 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:09,719 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:09:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:09,736 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:09:09,804 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 20:09:09,804 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:09:09,804 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:09:09,804 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:09:09,806 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:09:09,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:09:09,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:09:09,806 INFO L87 Difference]: Start difference. First operand 219 states and 234 transitions. Second operand 3 states. [2018-01-24 20:09:09,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:09:09,939 INFO L93 Difference]: Finished difference Result 227 states and 245 transitions. [2018-01-24 20:09:09,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:09:09,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 20:09:09,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:09:09,943 INFO L225 Difference]: With dead ends: 227 [2018-01-24 20:09:09,943 INFO L226 Difference]: Without dead ends: 226 [2018-01-24 20:09:09,946 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 20:09:09,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-24 20:09:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 218. [2018-01-24 20:09:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-01-24 20:09:09,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 233 transitions. [2018-01-24 20:09:09,968 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 233 transitions. Word has length 4 [2018-01-24 20:09:09,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:09:09,968 INFO L432 AbstractCegarLoop]: Abstraction has 218 states and 233 transitions. [2018-01-24 20:09:09,968 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:09:09,969 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 233 transitions. [2018-01-24 20:09:09,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:09:09,969 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:09:09,970 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 20:09:09,970 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_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr0RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation, 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 20:09:09,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1969754800, now seen corresponding path program 1 times [2018-01-24 20:09:09,970 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:09:09,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:09,971 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:09,972 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:09,972 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:09:09,993 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 20:09:09,994 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 20:09:09,994 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 20:09:10,007 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:10,008 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 20:09:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:10,054 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-24 20:09:10,055 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 20:09:10,055 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:09:10,056 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 20:09:10,064 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:10,064 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 20:09:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:10,106 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 20:09:10,141 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 20:09:10,143 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 20:09:10,145 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 20:09:10,145 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 20:09:10,152 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 20:09:10,152 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 20:09:10,159 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 20:09:10,181 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:09:10,182 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-01-24 20:09:10,182 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:09:10,182 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:09:10,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:09:10,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:09:10,183 INFO L87 Difference]: Start difference. First operand 218 states and 233 transitions. Second operand 4 states. [2018-01-24 20:09:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:09:10,405 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2018-01-24 20:09:10,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:09:10,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 20:09:10,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:09:10,444 INFO L225 Difference]: With dead ends: 218 [2018-01-24 20:09:10,444 INFO L226 Difference]: Without dead ends: 217 [2018-01-24 20:09:10,444 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 20:09:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-01-24 20:09:10,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-01-24 20:09:10,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-01-24 20:09:10,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 232 transitions. [2018-01-24 20:09:10,463 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 232 transitions. Word has length 17 [2018-01-24 20:09:10,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:09:10,463 INFO L432 AbstractCegarLoop]: Abstraction has 217 states and 232 transitions. [2018-01-24 20:09:10,463 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:09:10,463 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 232 transitions. [2018-01-24 20:09:10,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:09:10,464 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:09:10,464 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 20:09:10,464 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_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr0RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation, 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 20:09:10,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1969754799, now seen corresponding path program 1 times [2018-01-24 20:09:10,464 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:09:10,465 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:10,465 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:10,465 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:10,465 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:09:10,481 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 20:09:10,481 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 20:09:10,482 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 20:09:10,490 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:10,490 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 20:09:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:10,520 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-24 20:09:10,520 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 20:09:10,520 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:09:10,521 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 20:09:10,531 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:10,531 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 20:09:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:10,557 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 20:09:10,565 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 20:09:10,566 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 20:09:10,592 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 20:09:10,593 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 20:09:10,616 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 20:09:10,617 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:44 [2018-01-24 20:09:10,651 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 20:09:10,651 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 20:09:10,712 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 20:09:10,732 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:09:10,732 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2018-01-24 20:09:10,732 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:09:10,733 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:09:10,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:09:10,733 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:09:10,733 INFO L87 Difference]: Start difference. First operand 217 states and 232 transitions. Second operand 4 states. [2018-01-24 20:09:10,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:09:10,909 INFO L93 Difference]: Finished difference Result 217 states and 232 transitions. [2018-01-24 20:09:10,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:09:10,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 20:09:10,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:09:10,911 INFO L225 Difference]: With dead ends: 217 [2018-01-24 20:09:10,912 INFO L226 Difference]: Without dead ends: 216 [2018-01-24 20:09:10,912 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 20:09:10,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-24 20:09:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-01-24 20:09:10,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-01-24 20:09:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 231 transitions. [2018-01-24 20:09:10,926 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 231 transitions. Word has length 17 [2018-01-24 20:09:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:09:10,926 INFO L432 AbstractCegarLoop]: Abstraction has 216 states and 231 transitions. [2018-01-24 20:09:10,926 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:09:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 231 transitions. [2018-01-24 20:09:10,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-01-24 20:09:10,931 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:09:10,931 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 20:09:10,931 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_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr0RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation, 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 20:09:10,932 INFO L82 PathProgramCache]: Analyzing trace with hash -772454620, now seen corresponding path program 1 times [2018-01-24 20:09:10,932 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:09:10,933 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:10,933 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:10,933 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:10,933 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:09:10,959 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 20:09:10,959 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 20:09:10,959 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 20:09:10,974 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:10,974 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 20:09:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:11,065 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2018-01-24 20:09:11,067 INFO L201 CegarAbsIntRunner]: [53], [100], [102], [106], [129], [130], [136], [137], [138], [140], [144], [167], [169], [173], [196], [198], [202], [225], [226], [227], [231], [232], [233], [235], [238], [252], [254], [257], [259], [260], [261], [262], [265], [327], [333], [334], [335], [337], [338], [339], [341], [342], [343], [345], [346], [347], [349], [350], [351], [352], [353], [354], [355], [356], [359], [360], [361] [2018-01-24 20:09:11,122 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:09:11,123 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