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_precise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test15_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 06:11:30,315 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 06:11:30,316 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 06:11:30,332 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 06:11:30,332 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 06:11:30,333 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 06:11:30,334 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 06:11:30,335 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 06:11:30,337 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 06:11:30,338 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 06:11:30,339 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 06:11:30,340 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 06:11:30,341 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 06:11:30,342 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 06:11:30,343 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 06:11:30,345 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 06:11:30,348 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 06:11:30,350 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 06:11:30,351 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 06:11:30,352 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 06:11:30,355 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 06:11:30,360 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 06:11:30,360 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 06:11:30,361 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_precise.epf [2018-01-21 06:11:30,369 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 06:11:30,370 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 06:11:30,370 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 06:11:30,371 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 06:11:30,371 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 06:11:30,371 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 06:11:30,371 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 06:11:30,371 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 06:11:30,371 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 06:11:30,372 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 06:11:30,372 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 06:11:30,372 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 06:11:30,372 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 06:11:30,372 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 06:11:30,372 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 06:11:30,372 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 06:11:30,372 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 06:11:30,373 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 06:11:30,373 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 06:11:30,373 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 06:11:30,373 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 06:11:30,373 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 06:11:30,373 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 06:11:30,374 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 06:11:30,374 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 06:11:30,374 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 06:11:30,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 06:11:30,374 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 06:11:30,374 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 06:11:30,375 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 06:11:30,375 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 06:11:30,375 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 06:11:30,375 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 06:11:30,375 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 06:11:30,375 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 06:11:30,375 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 06:11:30,375 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 06:11:30,376 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 06:11:30,376 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 06:11:30,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 06:11:30,423 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 06:11:30,427 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 06:11:30,429 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 06:11:30,429 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 06:11:30,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test15_false-valid-memtrack.i [2018-01-21 06:11:30,644 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 06:11:30,649 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 06:11:30,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 06:11:30,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 06:11:30,655 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 06:11:30,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 06:11:30" (1/1) ... [2018-01-21 06:11:30,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a855a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:11:30, skipping insertion in model container [2018-01-21 06:11:30,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 06:11:30" (1/1) ... [2018-01-21 06:11:30,671 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 06:11:30,720 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 06:11:30,847 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 06:11:30,877 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 06:11:30,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:11:30 WrapperNode [2018-01-21 06:11:30,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 06:11:30,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 06:11:30,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 06:11:30,892 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 06:11:30,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:11:30" (1/1) ... [2018-01-21 06:11:30,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:11:30" (1/1) ... [2018-01-21 06:11:30,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:11:30" (1/1) ... [2018-01-21 06:11:30,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:11:30" (1/1) ... [2018-01-21 06:11:30,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:11:30" (1/1) ... [2018-01-21 06:11:30,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:11:30" (1/1) ... [2018-01-21 06:11:30,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:11:30" (1/1) ... [2018-01-21 06:11:30,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 06:11:30,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 06:11:30,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 06:11:30,935 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 06:11:30,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:11:30" (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 06:11:30,981 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 06:11:30,981 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 06:11:30,981 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2018-01-21 06:11:30,981 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2018-01-21 06:11:30,981 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2018-01-21 06:11:30,982 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2018-01-21 06:11:30,982 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_hid_get_drvdata [2018-01-21 06:11:30,982 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_hid_set_drvdata [2018-01-21 06:11:30,982 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_arvo_init_arvo_device_struct [2018-01-21 06:11:30,982 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_arvo_init_specials_unsafe [2018-01-21 06:11:30,982 INFO L136 BoogieDeclarations]: Found implementation of procedure lvd_arvo_remove_specials [2018-01-21 06:11:30,982 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_arvo_probe_unsafe [2018-01-21 06:11:30,982 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_arvo_remove [2018-01-21 06:11:30,982 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 06:11:30,982 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 06:11:30,982 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 06:11:30,983 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 06:11:30,983 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 06:11:30,983 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 06:11:30,983 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 06:11:30,983 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 06:11:30,983 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 06:11:30,983 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-01-21 06:11:30,983 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-01-21 06:11:30,983 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_hid_get_drvdata [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_hid_set_drvdata [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_arvo_init_arvo_device_struct [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_arvo_init_specials_unsafe [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure lvd_arvo_remove_specials [2018-01-21 06:11:30,984 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_arvo_probe_unsafe [2018-01-21 06:11:30,985 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_arvo_remove [2018-01-21 06:11:30,985 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 06:11:30,985 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 06:11:30,985 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 06:11:30,985 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 06:11:31,429 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 06:11:31,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 06:11:31 BoogieIcfgContainer [2018-01-21 06:11:31,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 06:11:31,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 06:11:31,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 06:11:31,434 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 06:11:31,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 06:11:30" (1/3) ... [2018-01-21 06:11:31,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7ac40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 06:11:31, skipping insertion in model container [2018-01-21 06:11:31,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 06:11:30" (2/3) ... [2018-01-21 06:11:31,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7ac40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 06:11:31, skipping insertion in model container [2018-01-21 06:11:31,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 06:11:31" (3/3) ... [2018-01-21 06:11:31,438 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test15_false-valid-memtrack.i [2018-01-21 06:11:31,444 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 06:11:31,451 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-01-21 06:11:31,502 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 06:11:31,503 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 06:11:31,503 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 06:11:31,503 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 06:11:31,503 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 06:11:31,503 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 06:11:31,503 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 06:11:31,504 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 06:11:31,504 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 06:11:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2018-01-21 06:11:31,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 06:11:31,533 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:11:31,534 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 06:11:31,534 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 06:11:31,538 INFO L82 PathProgramCache]: Analyzing trace with hash -112862679, now seen corresponding path program 1 times [2018-01-21 06:11:31,540 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:11:31,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:11:31,586 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:11:31,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:11:31,742 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:11:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:11:31,803 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:11:31,923 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 06:11:31,997 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 06:11:31,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 06:11:31,998 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:11:32,002 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 06:11:32,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 06:11:32,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 06:11:32,015 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 6 states. [2018-01-21 06:11:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 06:11:32,080 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2018-01-21 06:11:32,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 06:11:32,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-01-21 06:11:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 06:11:32,094 INFO L225 Difference]: With dead ends: 144 [2018-01-21 06:11:32,094 INFO L226 Difference]: Without dead ends: 118 [2018-01-21 06:11:32,098 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 06:11:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-21 06:11:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-01-21 06:11:32,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-21 06:11:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 130 transitions. [2018-01-21 06:11:32,142 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 130 transitions. Word has length 22 [2018-01-21 06:11:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 06:11:32,144 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 130 transitions. [2018-01-21 06:11:32,144 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 06:11:32,144 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 130 transitions. [2018-01-21 06:11:32,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-21 06:11:32,146 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 06:11:32,146 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 06:11:32,146 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 06:11:32,146 INFO L82 PathProgramCache]: Analyzing trace with hash -653559548, now seen corresponding path program 1 times [2018-01-21 06:11:32,146 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 06:11:32,148 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:11:32,148 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 06:11:32,149 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 06:11:32,149 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 06:11:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 06:11:32,168 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 06:11:32,213 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 06:11:32,213 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 06:11:32,213 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 06:11:32,214 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 37 with the following transitions: [2018-01-21 06:11:32,216 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 06:11:32,257 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 06:11:32,257 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 06:11:33,665 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 06:11:33,667 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 06:11:33,694 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 06:11:34,379 INFO L232 lantSequenceWeakener]: Weakened 31 states. On average, predicates are now at 63.33% of their original sizes. [2018-01-21 06:11:34,380 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 06:11:34,797 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 06:11:34,798 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-21 06:11:34,799 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [4] total 22 [2018-01-21 06:11:34,799 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 06:11:34,800 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-01-21 06:11:34,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-01-21 06:11:34,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2018-01-21 06:11:34,803 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