java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0235_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:09:33,502 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:09:33,504 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:09:33,519 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:09:33,519 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:09:33,520 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:09:33,522 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:09:33,523 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:09:33,525 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:09:33,526 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:09:33,527 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:09:33,527 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:09:33,528 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:09:33,529 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:09:33,530 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:09:33,533 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:09:33,535 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:09:33,537 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:09:33,538 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:09:33,540 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:09:33,542 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:09:33,542 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:09:33,542 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:09:33,543 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:09:33,544 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:09:33,546 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:09:33,546 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:09:33,547 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:09:33,547 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:09:33,547 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:09:33,547 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:09:33,548 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 20:09:33,556 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:09:33,556 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:09:33,557 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:09:33,557 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:09:33,557 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:09:33,557 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:09:33,558 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:09:33,558 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:09:33,558 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:09:33,558 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:09:33,558 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:09:33,558 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:09:33,559 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:09:33,559 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:09:33,559 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:09:33,559 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:09:33,559 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:09:33,559 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:09:33,559 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:09:33,560 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:09:33,560 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:09:33,560 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:09:33,560 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:09:33,560 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:09:33,560 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:09:33,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:09:33,561 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:09:33,561 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:09:33,561 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:09:33,561 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:09:33,561 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:09:33,561 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:09:33,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:09:33,562 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:09:33,562 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:09:33,562 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:09:33,563 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:09:33,595 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:09:33,606 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:09:33,610 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:09:33,611 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:09:33,611 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:09:33,612 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0235_false-valid-memtrack.i [2018-01-24 20:09:33,786 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:09:33,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:09:33,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:09:33,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:09:33,797 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:09:33,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:09:33" (1/1) ... [2018-01-24 20:09:33,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a60e38e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:33, skipping insertion in model container [2018-01-24 20:09:33,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:09:33" (1/1) ... [2018-01-24 20:09:33,814 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:09:33,859 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:09:33,987 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:09:34,016 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:09:34,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:34 WrapperNode [2018-01-24 20:09:34,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:09:34,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:09:34,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:09:34,030 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:09:34,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:34" (1/1) ... [2018-01-24 20:09:34,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:34" (1/1) ... [2018-01-24 20:09:34,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:34" (1/1) ... [2018-01-24 20:09:34,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:34" (1/1) ... [2018-01-24 20:09:34,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:34" (1/1) ... [2018-01-24 20:09:34,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:34" (1/1) ... [2018-01-24 20:09:34,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:34" (1/1) ... [2018-01-24 20:09:34,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:09:34,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:09:34,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:09:34,082 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:09:34,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:34" (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 20:09:34,129 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:09:34,130 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:09:34,130 INFO L136 BoogieDeclarations]: Found implementation of procedure calloc_model [2018-01-24 20:09:34,130 INFO L136 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2018-01-24 20:09:34,130 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_insert [2018-01-24 20:09:34,130 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_insert [2018-01-24 20:09:34,130 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_insert [2018-01-24 20:09:34,130 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_insert [2018-01-24 20:09:34,130 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_insert [2018-01-24 20:09:34,131 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_destroy [2018-01-24 20:09:34,131 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_destroy [2018-01-24 20:09:34,131 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_destroy [2018-01-24 20:09:34,131 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_destroy [2018-01-24 20:09:34,131 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_destroy [2018-01-24 20:09:34,131 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:09:34,131 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:09:34,131 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:09:34,131 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:09:34,131 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:09:34,131 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:09:34,132 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-24 20:09:34,132 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-24 20:09:34,132 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:09:34,132 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:09:34,132 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-24 20:09:34,132 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-24 20:09:34,132 INFO L128 BoogieDeclarations]: Found specification of procedure calloc_model [2018-01-24 20:09:34,132 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:09:34,132 INFO L128 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2018-01-24 20:09:34,133 INFO L128 BoogieDeclarations]: Found specification of procedure l4_insert [2018-01-24 20:09:34,133 INFO L128 BoogieDeclarations]: Found specification of procedure l3_insert [2018-01-24 20:09:34,133 INFO L128 BoogieDeclarations]: Found specification of procedure l2_insert [2018-01-24 20:09:34,133 INFO L128 BoogieDeclarations]: Found specification of procedure l1_insert [2018-01-24 20:09:34,133 INFO L128 BoogieDeclarations]: Found specification of procedure l0_insert [2018-01-24 20:09:34,133 INFO L128 BoogieDeclarations]: Found specification of procedure l4_destroy [2018-01-24 20:09:34,133 INFO L128 BoogieDeclarations]: Found specification of procedure l3_destroy [2018-01-24 20:09:34,133 INFO L128 BoogieDeclarations]: Found specification of procedure l2_destroy [2018-01-24 20:09:34,133 INFO L128 BoogieDeclarations]: Found specification of procedure l1_destroy [2018-01-24 20:09:34,133 INFO L128 BoogieDeclarations]: Found specification of procedure l0_destroy [2018-01-24 20:09:34,133 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:09:34,134 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:09:34,134 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:09:34,529 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-24 20:09:34,788 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:09:34,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:09:34 BoogieIcfgContainer [2018-01-24 20:09:34,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:09:34,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:09:34,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:09:34,792 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:09:34,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:09:33" (1/3) ... [2018-01-24 20:09:34,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af096f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:09:34, skipping insertion in model container [2018-01-24 20:09:34,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:09:34" (2/3) ... [2018-01-24 20:09:34,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af096f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:09:34, skipping insertion in model container [2018-01-24 20:09:34,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:09:34" (3/3) ... [2018-01-24 20:09:34,797 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0235_false-valid-memtrack.i [2018-01-24 20:09:34,807 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:09:34,815 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 81 error locations. [2018-01-24 20:09:34,866 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:09:34,867 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:09:34,867 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:09:34,867 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:09:34,867 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:09:34,867 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:09:34,867 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:09:34,867 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:09:34,868 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:09:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states. [2018-01-24 20:09:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 20:09:34,912 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:09:34,913 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 20:09:34,914 INFO L371 AbstractCegarLoop]: === Iteration 1 === [l3_destroyErr0RequiresViolation, l3_destroyErr3RequiresViolation, l3_destroyErr1RequiresViolation, l3_destroyErr2RequiresViolation, l3_destroyErr4RequiresViolation, l3_destroyErr5RequiresViolation, l0_insertErr3RequiresViolation, l0_insertErr1RequiresViolation, l0_insertErr5RequiresViolation, l0_insertErr2RequiresViolation, l0_insertErr4RequiresViolation, l0_insertErr0RequiresViolation, l4_destroyErr4RequiresViolation, l4_destroyErr6RequiresViolation, l4_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr7RequiresViolation, l4_destroyErr0RequiresViolation, l4_destroyErr5RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation, 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 20:09:34,919 INFO L82 PathProgramCache]: Analyzing trace with hash 14892544, now seen corresponding path program 1 times [2018-01-24 20:09:34,922 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:09:34,980 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:34,980 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:34,980 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:34,980 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:09:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:35,027 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:09:35,081 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 20:09:35,084 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:09:35,084 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:09:35,084 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:09:35,088 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:09:35,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:09:35,181 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:09:35,183 INFO L87 Difference]: Start difference. First operand 265 states. Second operand 3 states. [2018-01-24 20:09:35,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:09:35,495 INFO L93 Difference]: Finished difference Result 635 states and 773 transitions. [2018-01-24 20:09:35,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:09:35,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 20:09:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:09:35,517 INFO L225 Difference]: With dead ends: 635 [2018-01-24 20:09:35,517 INFO L226 Difference]: Without dead ends: 375 [2018-01-24 20:09:35,525 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 20:09:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-01-24 20:09:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 331. [2018-01-24 20:09:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-01-24 20:09:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 406 transitions. [2018-01-24 20:09:35,593 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 406 transitions. Word has length 4 [2018-01-24 20:09:35,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:09:35,594 INFO L432 AbstractCegarLoop]: Abstraction has 331 states and 406 transitions. [2018-01-24 20:09:35,594 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:09:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 406 transitions. [2018-01-24 20:09:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 20:09:35,594 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:09:35,594 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 20:09:35,595 INFO L371 AbstractCegarLoop]: === Iteration 2 === [l3_destroyErr0RequiresViolation, l3_destroyErr3RequiresViolation, l3_destroyErr1RequiresViolation, l3_destroyErr2RequiresViolation, l3_destroyErr4RequiresViolation, l3_destroyErr5RequiresViolation, l0_insertErr3RequiresViolation, l0_insertErr1RequiresViolation, l0_insertErr5RequiresViolation, l0_insertErr2RequiresViolation, l0_insertErr4RequiresViolation, l0_insertErr0RequiresViolation, l4_destroyErr4RequiresViolation, l4_destroyErr6RequiresViolation, l4_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr7RequiresViolation, l4_destroyErr0RequiresViolation, l4_destroyErr5RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation, 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 20:09:35,595 INFO L82 PathProgramCache]: Analyzing trace with hash 14892545, now seen corresponding path program 1 times [2018-01-24 20:09:35,595 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:09:35,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:35,596 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:35,596 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:35,596 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:09:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:35,609 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:09:35,694 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 20:09:35,694 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:09:35,695 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:09:35,695 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:09:35,697 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:09:35,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:09:35,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:09:35,697 INFO L87 Difference]: Start difference. First operand 331 states and 406 transitions. Second operand 3 states. [2018-01-24 20:09:35,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:09:35,837 INFO L93 Difference]: Finished difference Result 339 states and 417 transitions. [2018-01-24 20:09:35,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:09:35,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 20:09:35,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:09:35,840 INFO L225 Difference]: With dead ends: 339 [2018-01-24 20:09:35,840 INFO L226 Difference]: Without dead ends: 338 [2018-01-24 20:09:35,841 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 20:09:35,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-01-24 20:09:35,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 330. [2018-01-24 20:09:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-01-24 20:09:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 405 transitions. [2018-01-24 20:09:35,868 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 405 transitions. Word has length 4 [2018-01-24 20:09:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:09:35,868 INFO L432 AbstractCegarLoop]: Abstraction has 330 states and 405 transitions. [2018-01-24 20:09:35,868 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:09:35,868 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 405 transitions. [2018-01-24 20:09:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:09:35,869 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:09:35,869 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 20:09:35,869 INFO L371 AbstractCegarLoop]: === Iteration 3 === [l3_destroyErr0RequiresViolation, l3_destroyErr3RequiresViolation, l3_destroyErr1RequiresViolation, l3_destroyErr2RequiresViolation, l3_destroyErr4RequiresViolation, l3_destroyErr5RequiresViolation, l0_insertErr3RequiresViolation, l0_insertErr1RequiresViolation, l0_insertErr5RequiresViolation, l0_insertErr2RequiresViolation, l0_insertErr4RequiresViolation, l0_insertErr0RequiresViolation, l4_destroyErr4RequiresViolation, l4_destroyErr6RequiresViolation, l4_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr7RequiresViolation, l4_destroyErr0RequiresViolation, l4_destroyErr5RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation, 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 20:09:35,869 INFO L82 PathProgramCache]: Analyzing trace with hash -948681041, now seen corresponding path program 1 times [2018-01-24 20:09:35,870 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:09:35,870 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:35,871 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:35,871 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:35,871 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:09:35,888 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 20:09:35,888 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 20:09:35,888 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 20:09:35,894 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:35,894 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 20:09:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:35,931 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-24 20:09:35,950 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 20:09:35,950 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:09:35,950 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 20:09:35,956 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:35,956 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 20:09:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:35,994 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 20:09:36,026 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 20:09:36,027 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 20:09:36,033 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 20:09:36,033 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 20:09:36,040 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 20:09:36,040 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 20:09:36,056 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 20:09:36,077 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:09:36,077 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-01-24 20:09:36,078 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:09:36,078 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:09:36,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:09:36,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:09:36,078 INFO L87 Difference]: Start difference. First operand 330 states and 405 transitions. Second operand 4 states. [2018-01-24 20:09:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:09:36,293 INFO L93 Difference]: Finished difference Result 330 states and 405 transitions. [2018-01-24 20:09:36,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:09:36,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 20:09:36,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:09:36,295 INFO L225 Difference]: With dead ends: 330 [2018-01-24 20:09:36,296 INFO L226 Difference]: Without dead ends: 329 [2018-01-24 20:09:36,296 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 20:09:36,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-01-24 20:09:36,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-01-24 20:09:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-01-24 20:09:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 404 transitions. [2018-01-24 20:09:36,316 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 404 transitions. Word has length 17 [2018-01-24 20:09:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:09:36,317 INFO L432 AbstractCegarLoop]: Abstraction has 329 states and 404 transitions. [2018-01-24 20:09:36,317 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:09:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 404 transitions. [2018-01-24 20:09:36,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:09:36,318 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:09:36,318 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 20:09:36,318 INFO L371 AbstractCegarLoop]: === Iteration 4 === [l3_destroyErr0RequiresViolation, l3_destroyErr3RequiresViolation, l3_destroyErr1RequiresViolation, l3_destroyErr2RequiresViolation, l3_destroyErr4RequiresViolation, l3_destroyErr5RequiresViolation, l0_insertErr3RequiresViolation, l0_insertErr1RequiresViolation, l0_insertErr5RequiresViolation, l0_insertErr2RequiresViolation, l0_insertErr4RequiresViolation, l0_insertErr0RequiresViolation, l4_destroyErr4RequiresViolation, l4_destroyErr6RequiresViolation, l4_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr7RequiresViolation, l4_destroyErr0RequiresViolation, l4_destroyErr5RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation, 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 20:09:36,319 INFO L82 PathProgramCache]: Analyzing trace with hash -948681040, now seen corresponding path program 1 times [2018-01-24 20:09:36,319 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:09:36,320 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:36,320 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:36,320 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:36,321 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:09:36,335 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 20:09:36,335 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 20:09:36,335 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 20:09:36,341 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:36,342 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 20:09:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:36,370 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-24 20:09:36,370 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 20:09:36,370 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:09:36,371 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 20:09:36,375 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:36,376 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 20:09:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:36,401 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 20:09:36,412 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 20:09:36,412 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 20:09:36,429 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 20:09:36,429 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 20:09:36,446 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 20:09:36,447 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:44 [2018-01-24 20:09:36,488 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 20:09:36,488 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 20:09:36,554 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 20:09:36,576 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:09:36,576 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2018-01-24 20:09:36,576 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:09:36,576 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:09:36,577 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:09:36,577 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:09:36,577 INFO L87 Difference]: Start difference. First operand 329 states and 404 transitions. Second operand 4 states. [2018-01-24 20:09:36,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:09:36,832 INFO L93 Difference]: Finished difference Result 329 states and 404 transitions. [2018-01-24 20:09:36,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:09:36,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 20:09:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:09:36,835 INFO L225 Difference]: With dead ends: 329 [2018-01-24 20:09:36,835 INFO L226 Difference]: Without dead ends: 328 [2018-01-24 20:09:36,836 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 20:09:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-01-24 20:09:36,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-01-24 20:09:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-01-24 20:09:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 403 transitions. [2018-01-24 20:09:36,851 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 403 transitions. Word has length 17 [2018-01-24 20:09:36,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:09:36,852 INFO L432 AbstractCegarLoop]: Abstraction has 328 states and 403 transitions. [2018-01-24 20:09:36,852 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:09:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 403 transitions. [2018-01-24 20:09:36,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-01-24 20:09:36,856 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:09:36,856 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 20:09:36,856 INFO L371 AbstractCegarLoop]: === Iteration 5 === [l3_destroyErr0RequiresViolation, l3_destroyErr3RequiresViolation, l3_destroyErr1RequiresViolation, l3_destroyErr2RequiresViolation, l3_destroyErr4RequiresViolation, l3_destroyErr5RequiresViolation, l0_insertErr3RequiresViolation, l0_insertErr1RequiresViolation, l0_insertErr5RequiresViolation, l0_insertErr2RequiresViolation, l0_insertErr4RequiresViolation, l0_insertErr0RequiresViolation, l4_destroyErr4RequiresViolation, l4_destroyErr6RequiresViolation, l4_destroyErr2RequiresViolation, l4_destroyErr3RequiresViolation, l4_destroyErr1RequiresViolation, l4_destroyErr7RequiresViolation, l4_destroyErr0RequiresViolation, l4_destroyErr5RequiresViolation, l2_insertErr3RequiresViolation, l2_insertErr5RequiresViolation, l2_insertErr0RequiresViolation, l2_insertErr1RequiresViolation, l2_insertErr4RequiresViolation, l2_insertErr2RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation, 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 20:09:36,857 INFO L82 PathProgramCache]: Analyzing trace with hash -21730712, now seen corresponding path program 1 times [2018-01-24 20:09:36,857 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:09:36,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:36,858 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:36,858 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:09:36,858 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:09:36,880 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 20:09:36,880 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 20:09:36,880 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 20:09:36,890 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:09:36,891 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 20:09:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:09:36,965 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2018-01-24 20:09:36,966 INFO L201 CegarAbsIntRunner]: [84], [167], [169], [173], [196], [197], [203], [204], [205], [207], [211], [234], [236], [240], [263], [265], [269], [292], [293], [294], [298], [299], [300], [302], [305], [319], [321], [324], [326], [327], [328], [329], [332], [418], [432], [433], [434], [436], [437], [438], [440], [441], [442], [444], [445], [446], [448], [449], [450], [451], [452], [453], [454], [455], [458], [459], [460] [2018-01-24 20:09:37,020 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:09:37,021 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