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_precise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0235_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 23:33:26,902 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 23:33:26,904 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 23:33:26,918 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 23:33:26,918 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 23:33:26,919 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 23:33:26,920 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 23:33:26,922 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 23:33:26,924 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 23:33:26,925 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 23:33:26,925 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 23:33:26,926 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 23:33:26,926 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 23:33:26,928 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 23:33:26,929 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 23:33:26,931 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 23:33:26,933 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 23:33:26,935 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 23:33:26,937 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 23:33:26,938 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 23:33:26,940 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 23:33:26,940 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 23:33:26,941 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 23:33:26,942 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 23:33:26,942 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 23:33:26,944 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 23:33:26,944 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 23:33:26,944 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 23:33:26,945 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 23:33:26,945 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 23:33:26,945 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 23:33:26,946 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_precise.epf [2018-01-24 23:33:26,956 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 23:33:26,956 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 23:33:26,957 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 23:33:26,957 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 23:33:26,957 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 23:33:26,958 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 23:33:26,958 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 23:33:26,958 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 23:33:26,959 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 23:33:26,959 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 23:33:26,959 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 23:33:26,959 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 23:33:26,959 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 23:33:26,960 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 23:33:26,960 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 23:33:26,960 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 23:33:26,960 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 23:33:26,960 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 23:33:26,961 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 23:33:26,961 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 23:33:26,961 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 23:33:26,961 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 23:33:26,961 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 23:33:26,962 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 23:33:26,962 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 23:33:26,962 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 23:33:26,962 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 23:33:26,963 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 23:33:26,963 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 23:33:26,963 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 23:33:26,963 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 23:33:26,963 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 23:33:26,963 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 23:33:26,964 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 23:33:26,965 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 23:33:26,965 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 23:33:27,000 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 23:33:27,013 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 23:33:27,017 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 23:33:27,019 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 23:33:27,019 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 23:33:27,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0235_false-valid-memtrack.i [2018-01-24 23:33:27,215 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 23:33:27,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 23:33:27,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 23:33:27,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 23:33:27,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 23:33:27,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:33:27" (1/1) ... [2018-01-24 23:33:27,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8bf943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:33:27, skipping insertion in model container [2018-01-24 23:33:27,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:33:27" (1/1) ... [2018-01-24 23:33:27,254 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:33:27,306 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 23:33:27,440 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:33:27,472 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 23:33:27,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:33:27 WrapperNode [2018-01-24 23:33:27,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 23:33:27,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 23:33:27,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 23:33:27,486 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 23:33:27,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:33:27" (1/1) ... [2018-01-24 23:33:27,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:33:27" (1/1) ... [2018-01-24 23:33:27,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:33:27" (1/1) ... [2018-01-24 23:33:27,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:33:27" (1/1) ... [2018-01-24 23:33:27,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:33:27" (1/1) ... [2018-01-24 23:33:27,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:33:27" (1/1) ... [2018-01-24 23:33:27,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:33:27" (1/1) ... [2018-01-24 23:33:27,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 23:33:27,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 23:33:27,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 23:33:27,531 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 23:33:27,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:33:27" (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 23:33:27,589 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 23:33:27,589 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 23:33:27,589 INFO L136 BoogieDeclarations]: Found implementation of procedure calloc_model [2018-01-24 23:33:27,589 INFO L136 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2018-01-24 23:33:27,589 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_insert [2018-01-24 23:33:27,590 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_insert [2018-01-24 23:33:27,590 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_insert [2018-01-24 23:33:27,590 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_insert [2018-01-24 23:33:27,590 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_insert [2018-01-24 23:33:27,590 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_destroy [2018-01-24 23:33:27,590 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_destroy [2018-01-24 23:33:27,591 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_destroy [2018-01-24 23:33:27,591 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_destroy [2018-01-24 23:33:27,591 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_destroy [2018-01-24 23:33:27,591 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 23:33:27,591 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 23:33:27,591 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 23:33:27,591 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 23:33:27,592 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 23:33:27,592 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 23:33:27,592 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-24 23:33:27,592 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-24 23:33:27,592 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 23:33:27,592 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 23:33:27,592 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-24 23:33:27,592 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-24 23:33:27,593 INFO L128 BoogieDeclarations]: Found specification of procedure calloc_model [2018-01-24 23:33:27,593 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 23:33:27,593 INFO L128 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2018-01-24 23:33:27,593 INFO L128 BoogieDeclarations]: Found specification of procedure l4_insert [2018-01-24 23:33:27,593 INFO L128 BoogieDeclarations]: Found specification of procedure l3_insert [2018-01-24 23:33:27,593 INFO L128 BoogieDeclarations]: Found specification of procedure l2_insert [2018-01-24 23:33:27,593 INFO L128 BoogieDeclarations]: Found specification of procedure l1_insert [2018-01-24 23:33:27,593 INFO L128 BoogieDeclarations]: Found specification of procedure l0_insert [2018-01-24 23:33:27,593 INFO L128 BoogieDeclarations]: Found specification of procedure l4_destroy [2018-01-24 23:33:27,593 INFO L128 BoogieDeclarations]: Found specification of procedure l3_destroy [2018-01-24 23:33:27,594 INFO L128 BoogieDeclarations]: Found specification of procedure l2_destroy [2018-01-24 23:33:27,594 INFO L128 BoogieDeclarations]: Found specification of procedure l1_destroy [2018-01-24 23:33:27,594 INFO L128 BoogieDeclarations]: Found specification of procedure l0_destroy [2018-01-24 23:33:27,594 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 23:33:27,594 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 23:33:27,594 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 23:33:28,011 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-24 23:33:28,314 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 23:33:28,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:33:28 BoogieIcfgContainer [2018-01-24 23:33:28,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 23:33:28,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 23:33:28,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 23:33:28,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 23:33:28,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 11:33:27" (1/3) ... [2018-01-24 23:33:28,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b23422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:33:28, skipping insertion in model container [2018-01-24 23:33:28,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:33:27" (2/3) ... [2018-01-24 23:33:28,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b23422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:33:28, skipping insertion in model container [2018-01-24 23:33:28,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:33:28" (3/3) ... [2018-01-24 23:33:28,320 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0235_false-valid-memtrack.i [2018-01-24 23:33:28,326 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 23:33:28,333 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 81 error locations. [2018-01-24 23:33:28,384 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 23:33:28,384 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 23:33:28,384 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 23:33:28,384 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 23:33:28,384 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 23:33:28,385 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 23:33:28,385 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 23:33:28,385 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 23:33:28,385 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 23:33:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states. [2018-01-24 23:33:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 23:33:28,432 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:33:28,433 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 23:33:28,433 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 23:33:28,437 INFO L82 PathProgramCache]: Analyzing trace with hash 14892544, now seen corresponding path program 1 times [2018-01-24 23:33:28,439 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:33:28,479 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:33:28,479 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:33:28,479 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:33:28,479 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:33:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:33:28,515 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:33:28,568 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 23:33:28,570 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:33:28,570 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 23:33:28,570 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:33:28,572 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 23:33:28,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 23:33:28,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 23:33:28,667 INFO L87 Difference]: Start difference. First operand 265 states. Second operand 3 states. [2018-01-24 23:33:29,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:33:29,083 INFO L93 Difference]: Finished difference Result 635 states and 773 transitions. [2018-01-24 23:33:29,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 23:33:29,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 23:33:29,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:33:29,104 INFO L225 Difference]: With dead ends: 635 [2018-01-24 23:33:29,105 INFO L226 Difference]: Without dead ends: 375 [2018-01-24 23:33:29,112 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 23:33:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-01-24 23:33:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 331. [2018-01-24 23:33:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-01-24 23:33:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 406 transitions. [2018-01-24 23:33:29,172 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 406 transitions. Word has length 4 [2018-01-24 23:33:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:33:29,173 INFO L432 AbstractCegarLoop]: Abstraction has 331 states and 406 transitions. [2018-01-24 23:33:29,173 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 23:33:29,173 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 406 transitions. [2018-01-24 23:33:29,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 23:33:29,173 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:33:29,173 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 23:33:29,173 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 23:33:29,174 INFO L82 PathProgramCache]: Analyzing trace with hash 14892545, now seen corresponding path program 1 times [2018-01-24 23:33:29,174 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:33:29,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:33:29,175 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:33:29,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:33:29,175 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:33:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:33:29,188 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 23:33:29,233 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 23:33:29,234 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:33:29,234 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 23:33:29,234 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:33:29,236 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 23:33:29,236 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 23:33:29,236 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 23:33:29,236 INFO L87 Difference]: Start difference. First operand 331 states and 406 transitions. Second operand 3 states. [2018-01-24 23:33:29,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:33:29,364 INFO L93 Difference]: Finished difference Result 339 states and 417 transitions. [2018-01-24 23:33:29,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 23:33:29,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 23:33:29,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:33:29,368 INFO L225 Difference]: With dead ends: 339 [2018-01-24 23:33:29,368 INFO L226 Difference]: Without dead ends: 338 [2018-01-24 23:33:29,369 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 23:33:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-01-24 23:33:29,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 330. [2018-01-24 23:33:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2018-01-24 23:33:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 405 transitions. [2018-01-24 23:33:29,432 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 405 transitions. Word has length 4 [2018-01-24 23:33:29,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:33:29,432 INFO L432 AbstractCegarLoop]: Abstraction has 330 states and 405 transitions. [2018-01-24 23:33:29,432 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 23:33:29,432 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 405 transitions. [2018-01-24 23:33:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 23:33:29,433 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:33:29,433 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 23:33:29,433 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 23:33:29,433 INFO L82 PathProgramCache]: Analyzing trace with hash -948681041, now seen corresponding path program 1 times [2018-01-24 23:33:29,433 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:33:29,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:33:29,435 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:33:29,435 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:33:29,435 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:33:29,454 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 23:33:29,455 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 23:33:29,455 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 23:33:29,465 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:33:29,465 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 23:33:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:33:29,506 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-24 23:33:29,507 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 23:33:29,507 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 23:33:29,507 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 23:33:29,512 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:33:29,512 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 23:33:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:33:29,547 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 23:33:29,580 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 23:33:29,582 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 23:33:29,584 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 23:33:29,584 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 23:33:29,593 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 23:33:29,593 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 23:33:29,600 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 23:33:29,620 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:33:29,621 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-01-24 23:33:29,621 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:33:29,621 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:33:29,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:33:29,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 23:33:29,622 INFO L87 Difference]: Start difference. First operand 330 states and 405 transitions. Second operand 4 states. [2018-01-24 23:33:29,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:33:29,881 INFO L93 Difference]: Finished difference Result 330 states and 405 transitions. [2018-01-24 23:33:29,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:33:29,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 23:33:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:33:29,886 INFO L225 Difference]: With dead ends: 330 [2018-01-24 23:33:29,886 INFO L226 Difference]: Without dead ends: 329 [2018-01-24 23:33:29,887 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 23:33:29,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-01-24 23:33:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-01-24 23:33:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-01-24 23:33:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 404 transitions. [2018-01-24 23:33:29,913 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 404 transitions. Word has length 17 [2018-01-24 23:33:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:33:29,913 INFO L432 AbstractCegarLoop]: Abstraction has 329 states and 404 transitions. [2018-01-24 23:33:29,913 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:33:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 404 transitions. [2018-01-24 23:33:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 23:33:29,915 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:33:29,915 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 23:33:29,915 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 23:33:29,915 INFO L82 PathProgramCache]: Analyzing trace with hash -948681040, now seen corresponding path program 1 times [2018-01-24 23:33:29,915 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:33:29,917 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:33:29,917 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:33:29,917 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:33:29,917 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:33:29,933 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 23:33:29,933 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 23:33:29,933 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 23:33:29,943 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:33:29,943 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 23:33:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:33:29,990 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-24 23:33:29,991 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 23:33:29,991 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 23:33:29,991 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 23:33:29,998 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:33:29,999 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 23:33:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:33:30,027 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 23:33:30,037 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 23:33:30,038 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 23:33:30,063 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 23:33:30,064 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 23:33:30,079 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 23:33:30,079 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:44 [2018-01-24 23:33:30,111 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 23:33:30,111 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 23:33:30,171 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 23:33:30,191 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-24 23:33:30,191 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2018-01-24 23:33:30,191 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 23:33:30,192 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 23:33:30,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 23:33:30,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 23:33:30,192 INFO L87 Difference]: Start difference. First operand 329 states and 404 transitions. Second operand 4 states. [2018-01-24 23:33:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 23:33:30,449 INFO L93 Difference]: Finished difference Result 329 states and 404 transitions. [2018-01-24 23:33:30,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 23:33:30,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 23:33:30,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 23:33:30,452 INFO L225 Difference]: With dead ends: 329 [2018-01-24 23:33:30,452 INFO L226 Difference]: Without dead ends: 328 [2018-01-24 23:33:30,453 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 23:33:30,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-01-24 23:33:30,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2018-01-24 23:33:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2018-01-24 23:33:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 403 transitions. [2018-01-24 23:33:30,471 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 403 transitions. Word has length 17 [2018-01-24 23:33:30,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 23:33:30,471 INFO L432 AbstractCegarLoop]: Abstraction has 328 states and 403 transitions. [2018-01-24 23:33:30,472 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 23:33:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 403 transitions. [2018-01-24 23:33:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-01-24 23:33:30,477 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 23:33:30,477 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 23:33:30,477 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 23:33:30,477 INFO L82 PathProgramCache]: Analyzing trace with hash -21730712, now seen corresponding path program 1 times [2018-01-24 23:33:30,477 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 23:33:30,478 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:33:30,478 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:33:30,478 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 23:33:30,478 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 23:33:30,502 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 23:33:30,503 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 23:33:30,503 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 23:33:30,514 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 23:33:30,514 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 23:33:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 23:33:30,572 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2018-01-24 23:33:30,574 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 23:33:30,618 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 23:33:30,618 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