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/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test15_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 03:28:25,935 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 03:28:25,938 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 03:28:25,953 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 03:28:25,953 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 03:28:25,954 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 03:28:25,955 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 03:28:25,957 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 03:28:25,959 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 03:28:25,960 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 03:28:25,961 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 03:28:25,961 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 03:28:25,961 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 03:28:25,962 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 03:28:25,963 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 03:28:25,965 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 03:28:25,968 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 03:28:25,970 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 03:28:25,971 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 03:28:25,972 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 03:28:25,975 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 03:28:25,975 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 03:28:25,975 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 03:28:25,976 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 03:28:25,977 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 03:28:25,979 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 03:28:25,979 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 03:28:25,980 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 03:28:25,980 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 03:28:25,980 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 03:28:25,981 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 03:28:25,981 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-21 03:28:25,992 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 03:28:25,992 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 03:28:25,993 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 03:28:25,993 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 03:28:25,993 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 03:28:25,994 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 03:28:25,994 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 03:28:25,994 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 03:28:25,994 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 03:28:25,995 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 03:28:25,995 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 03:28:25,995 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 03:28:25,996 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 03:28:25,996 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 03:28:25,996 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 03:28:25,996 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 03:28:25,996 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 03:28:25,996 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 03:28:25,997 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 03:28:25,997 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 03:28:25,997 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 03:28:25,997 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 03:28:25,997 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 03:28:25,998 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 03:28:25,998 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 03:28:25,998 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 03:28:25,998 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 03:28:25,998 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 03:28:25,999 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 03:28:25,999 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 03:28:25,999 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 03:28:25,999 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 03:28:25,999 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 03:28:25,999 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 03:28:26,000 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 03:28:26,000 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 03:28:26,000 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 03:28:26,000 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 03:28:26,001 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 03:28:26,001 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 03:28:26,036 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 03:28:26,051 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 03:28:26,055 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 03:28:26,057 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 03:28:26,057 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 03:28:26,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test15_false-valid-memtrack.i [2018-01-21 03:28:26,285 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 03:28:26,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 03:28:26,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 03:28:26,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 03:28:26,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 03:28:26,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:28:26" (1/1) ... [2018-01-21 03:28:26,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f424e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:28:26, skipping insertion in model container [2018-01-21 03:28:26,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:28:26" (1/1) ... [2018-01-21 03:28:26,315 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:28:26,369 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:28:26,499 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:28:26,525 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:28:26,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:28:26 WrapperNode [2018-01-21 03:28:26,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 03:28:26,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 03:28:26,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 03:28:26,541 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 03:28:26,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:28:26" (1/1) ... [2018-01-21 03:28:26,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:28:26" (1/1) ... [2018-01-21 03:28:26,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:28:26" (1/1) ... [2018-01-21 03:28:26,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:28:26" (1/1) ... [2018-01-21 03:28:26,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:28:26" (1/1) ... [2018-01-21 03:28:26,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:28:26" (1/1) ... [2018-01-21 03:28:26,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:28:26" (1/1) ... [2018-01-21 03:28:26,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 03:28:26,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 03:28:26,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 03:28:26,585 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 03:28:26,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:28:26" (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 [2018-01-21 03:28:26,642 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 03:28:26,642 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 03:28:26,642 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2018-01-21 03:28:26,642 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2018-01-21 03:28:26,643 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2018-01-21 03:28:26,643 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2018-01-21 03:28:26,643 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_hid_get_drvdata [2018-01-21 03:28:26,643 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_hid_set_drvdata [2018-01-21 03:28:26,643 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_arvo_init_arvo_device_struct [2018-01-21 03:28:26,643 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_arvo_init_specials_unsafe [2018-01-21 03:28:26,644 INFO L136 BoogieDeclarations]: Found implementation of procedure lvd_arvo_remove_specials [2018-01-21 03:28:26,644 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_arvo_probe_unsafe [2018-01-21 03:28:26,644 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_arvo_remove [2018-01-21 03:28:26,644 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 03:28:26,644 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 03:28:26,644 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 03:28:26,644 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 03:28:26,645 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 03:28:26,645 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 03:28:26,645 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 03:28:26,645 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 03:28:26,645 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 03:28:26,645 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-01-21 03:28:26,646 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-01-21 03:28:26,646 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-01-21 03:28:26,646 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 03:28:26,646 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 03:28:26,646 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2018-01-21 03:28:26,646 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2018-01-21 03:28:26,646 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2018-01-21 03:28:26,646 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2018-01-21 03:28:26,647 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_hid_get_drvdata [2018-01-21 03:28:26,647 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_hid_set_drvdata [2018-01-21 03:28:26,647 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_arvo_init_arvo_device_struct [2018-01-21 03:28:26,647 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_arvo_init_specials_unsafe [2018-01-21 03:28:26,647 INFO L128 BoogieDeclarations]: Found specification of procedure lvd_arvo_remove_specials [2018-01-21 03:28:26,647 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_arvo_probe_unsafe [2018-01-21 03:28:26,647 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_arvo_remove [2018-01-21 03:28:26,647 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 03:28:26,647 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 03:28:26,647 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 03:28:26,648 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 03:28:27,156 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 03:28:27,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:28:27 BoogieIcfgContainer [2018-01-21 03:28:27,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 03:28:27,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 03:28:27,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 03:28:27,163 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 03:28:27,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 03:28:26" (1/3) ... [2018-01-21 03:28:27,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d165d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:28:27, skipping insertion in model container [2018-01-21 03:28:27,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:28:26" (2/3) ... [2018-01-21 03:28:27,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d165d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:28:27, skipping insertion in model container [2018-01-21 03:28:27,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:28:27" (3/3) ... [2018-01-21 03:28:27,168 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test15_false-valid-memtrack.i [2018-01-21 03:28:27,176 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 03:28:27,183 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-01-21 03:28:27,230 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:28:27,230 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:28:27,230 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:28:27,231 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:28:27,231 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:28:27,231 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:28:27,231 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:28:27,231 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 03:28:27,232 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:28:27,249 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2018-01-21 03:28:27,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 03:28:27,254 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:28:27,255 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:28:27,255 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 03:28:27,259 INFO L82 PathProgramCache]: Analyzing trace with hash -112862679, now seen corresponding path program 1 times [2018-01-21 03:28:27,261 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:28:27,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:28:27,308 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:28:27,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:28:27,309 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:28:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:28:27,378 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:28:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:28:27,581 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:28:27,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 03:28:27,581 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:28:27,585 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 03:28:27,601 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 03:28:27,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 03:28:27,604 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 6 states. [2018-01-21 03:28:27,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:28:27,682 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-21 03:28:27,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 03:28:27,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-01-21 03:28:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:28:27,695 INFO L225 Difference]: With dead ends: 144 [2018-01-21 03:28:27,696 INFO L226 Difference]: Without dead ends: 118 [2018-01-21 03:28:27,699 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-21 03:28:27,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-21 03:28:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-01-21 03:28:27,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-21 03:28:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2018-01-21 03:28:27,751 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 22 [2018-01-21 03:28:27,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:28:27,753 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2018-01-21 03:28:27,753 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 03:28:27,753 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2018-01-21 03:28:27,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-21 03:28:27,755 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:28:27,755 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:28:27,755 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 03:28:27,756 INFO L82 PathProgramCache]: Analyzing trace with hash -653559548, now seen corresponding path program 1 times [2018-01-21 03:28:27,756 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:28:27,757 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:28:27,758 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:28:27,758 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:28:27,758 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:28:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:28:27,784 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:28:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-21 03:28:27,854 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 03:28:27,854 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 03:28:27,855 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-01-21 03:28:27,857 INFO L201 CegarAbsIntRunner]: [2], [61], [67], [68], [70], [75], [77], [80], [112], [114], [120], [121], [127], [128], [130], [131], [164], [165], [178], [179], [180], [181], [190], [191], [192], [193], [194] [2018-01-21 03:28:27,901 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 03:28:27,901 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 03:28:29,397 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 03:28:29,398 INFO L268 AbstractInterpreter]: Visited 23 different actions 32 times. Never merged. Never widened. Never found a fixpoint. Largest state had 16 variables. [2018-01-21 03:28:30,120 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 03:28:30,813 INFO L232 lantSequenceWeakener]: Weakened 31 states. On average, predicates are now at 63.33% of their original sizes. [2018-01-21 03:28:30,814 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 03:28:31,157 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 03:28:31,158 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-21 03:28:31,158 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [4] total 22 [2018-01-21 03:28:31,158 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:28:31,160 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-21 03:28:31,160 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-21 03:28:31,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-01-21 03:28:31,161 INFO L87 Difference]: Start difference. First operand 118 states and 130 transitions. Second operand 20 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown