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_imprecise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0235_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 17:01:08,182 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 17:01:08,184 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 17:01:08,197 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 17:01:08,197 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 17:01:08,198 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 17:01:08,199 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 17:01:08,201 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 17:01:08,204 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 17:01:08,205 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 17:01:08,206 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 17:01:08,206 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 17:01:08,207 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 17:01:08,208 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 17:01:08,209 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 17:01:08,211 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 17:01:08,213 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 17:01:08,216 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 17:01:08,217 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 17:01:08,218 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 17:01:08,221 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 17:01:08,221 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 17:01:08,222 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 17:01:08,223 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 17:01:08,224 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 17:01:08,225 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 17:01:08,225 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 17:01:08,226 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 17:01:08,226 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 17:01:08,226 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 17:01:08,227 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 17:01:08,227 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_imprecise.epf [2018-01-24 17:01:08,239 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 17:01:08,239 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 17:01:08,240 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 17:01:08,240 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 17:01:08,240 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 17:01:08,241 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 17:01:08,241 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 17:01:08,241 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 17:01:08,242 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 17:01:08,242 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 17:01:08,242 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 17:01:08,242 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 17:01:08,243 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 17:01:08,243 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 17:01:08,243 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 17:01:08,243 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 17:01:08,243 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 17:01:08,244 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 17:01:08,244 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 17:01:08,244 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 17:01:08,244 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 17:01:08,244 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 17:01:08,245 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 17:01:08,245 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 17:01:08,245 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:01:08,245 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 17:01:08,246 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 17:01:08,246 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 17:01:08,246 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 17:01:08,246 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 17:01:08,246 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 17:01:08,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 17:01:08,247 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 17:01:08,247 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 17:01:08,248 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 17:01:08,248 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 17:01:08,283 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 17:01:08,297 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 17:01:08,301 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 17:01:08,303 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 17:01:08,304 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 17:01:08,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0235_true-valid-memsafety.i [2018-01-24 17:01:08,491 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 17:01:08,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 17:01:08,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 17:01:08,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 17:01:08,502 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 17:01:08,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:01:08" (1/1) ... [2018-01-24 17:01:08,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@376b2429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:01:08, skipping insertion in model container [2018-01-24 17:01:08,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:01:08" (1/1) ... [2018-01-24 17:01:08,518 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:01:08,563 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:01:08,700 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:01:08,731 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:01:08,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:01:08 WrapperNode [2018-01-24 17:01:08,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 17:01:08,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 17:01:08,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 17:01:08,746 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 17:01:08,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:01:08" (1/1) ... [2018-01-24 17:01:08,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:01:08" (1/1) ... [2018-01-24 17:01:08,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:01:08" (1/1) ... [2018-01-24 17:01:08,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:01:08" (1/1) ... [2018-01-24 17:01:08,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:01:08" (1/1) ... [2018-01-24 17:01:08,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:01:08" (1/1) ... [2018-01-24 17:01:08,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:01:08" (1/1) ... [2018-01-24 17:01:08,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 17:01:08,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 17:01:08,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 17:01:08,799 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 17:01:08,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:01:08" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:01:08,847 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 17:01:08,847 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 17:01:08,847 INFO L136 BoogieDeclarations]: Found implementation of procedure calloc_model [2018-01-24 17:01:08,847 INFO L136 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2018-01-24 17:01:08,847 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_insert [2018-01-24 17:01:08,848 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_insert [2018-01-24 17:01:08,848 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_insert [2018-01-24 17:01:08,848 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_insert [2018-01-24 17:01:08,848 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_insert [2018-01-24 17:01:08,848 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_destroy [2018-01-24 17:01:08,848 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_destroy [2018-01-24 17:01:08,849 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_destroy [2018-01-24 17:01:08,849 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_destroy [2018-01-24 17:01:08,849 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_destroy [2018-01-24 17:01:08,849 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 17:01:08,849 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 17:01:08,849 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 17:01:08,850 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 17:01:08,850 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 17:01:08,850 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 17:01:08,850 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-24 17:01:08,850 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-24 17:01:08,850 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 17:01:08,851 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 17:01:08,851 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-24 17:01:08,851 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-24 17:01:08,851 INFO L128 BoogieDeclarations]: Found specification of procedure calloc_model [2018-01-24 17:01:08,851 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 17:01:08,852 INFO L128 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2018-01-24 17:01:08,852 INFO L128 BoogieDeclarations]: Found specification of procedure l4_insert [2018-01-24 17:01:08,852 INFO L128 BoogieDeclarations]: Found specification of procedure l3_insert [2018-01-24 17:01:08,852 INFO L128 BoogieDeclarations]: Found specification of procedure l2_insert [2018-01-24 17:01:08,852 INFO L128 BoogieDeclarations]: Found specification of procedure l1_insert [2018-01-24 17:01:08,852 INFO L128 BoogieDeclarations]: Found specification of procedure l0_insert [2018-01-24 17:01:08,852 INFO L128 BoogieDeclarations]: Found specification of procedure l4_destroy [2018-01-24 17:01:08,853 INFO L128 BoogieDeclarations]: Found specification of procedure l3_destroy [2018-01-24 17:01:08,853 INFO L128 BoogieDeclarations]: Found specification of procedure l2_destroy [2018-01-24 17:01:08,853 INFO L128 BoogieDeclarations]: Found specification of procedure l1_destroy [2018-01-24 17:01:08,853 INFO L128 BoogieDeclarations]: Found specification of procedure l0_destroy [2018-01-24 17:01:08,853 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 17:01:08,853 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 17:01:08,854 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 17:01:09,265 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-24 17:01:09,621 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 17:01:09,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:01:09 BoogieIcfgContainer [2018-01-24 17:01:09,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 17:01:09,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 17:01:09,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 17:01:09,626 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 17:01:09,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 05:01:08" (1/3) ... [2018-01-24 17:01:09,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7451d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:01:09, skipping insertion in model container [2018-01-24 17:01:09,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:01:08" (2/3) ... [2018-01-24 17:01:09,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7451d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:01:09, skipping insertion in model container [2018-01-24 17:01:09,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:01:09" (3/3) ... [2018-01-24 17:01:09,630 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0235_true-valid-memsafety.i [2018-01-24 17:01:09,640 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 17:01:09,650 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 83 error locations. [2018-01-24 17:01:09,700 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 17:01:09,701 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 17:01:09,701 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 17:01:09,701 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 17:01:09,701 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 17:01:09,701 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 17:01:09,701 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 17:01:09,702 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 17:01:09,702 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 17:01:09,748 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states. [2018-01-24 17:01:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 17:01:09,752 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:01:09,753 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 17:01:09,753 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, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, 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 17:01:09,757 INFO L82 PathProgramCache]: Analyzing trace with hash 15106047, now seen corresponding path program 1 times [2018-01-24 17:01:09,759 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:01:09,800 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:01:09,800 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:01:09,800 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:01:09,800 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:01:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:01:09,847 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:01:09,931 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 17:01:09,933 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:01:09,933 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 17:01:09,933 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:01:10,019 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 17:01:10,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 17:01:10,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:01:10,032 INFO L87 Difference]: Start difference. First operand 270 states. Second operand 3 states. [2018-01-24 17:01:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:01:10,310 INFO L93 Difference]: Finished difference Result 539 states and 648 transitions. [2018-01-24 17:01:10,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 17:01:10,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 17:01:10,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:01:10,326 INFO L225 Difference]: With dead ends: 539 [2018-01-24 17:01:10,326 INFO L226 Difference]: Without dead ends: 274 [2018-01-24 17:01:10,334 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 17:01:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-01-24 17:01:10,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 266. [2018-01-24 17:01:10,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2018-01-24 17:01:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 296 transitions. [2018-01-24 17:01:10,395 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 296 transitions. Word has length 4 [2018-01-24 17:01:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:01:10,396 INFO L432 AbstractCegarLoop]: Abstraction has 266 states and 296 transitions. [2018-01-24 17:01:10,396 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 17:01:10,396 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 296 transitions. [2018-01-24 17:01:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 17:01:10,397 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:01:10,397 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 17:01:10,397 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, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, 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 17:01:10,397 INFO L82 PathProgramCache]: Analyzing trace with hash 15106046, now seen corresponding path program 1 times [2018-01-24 17:01:10,397 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:01:10,398 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:01:10,398 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:01:10,399 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:01:10,399 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:01:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:01:10,407 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:01:10,459 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 17:01:10,459 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:01:10,459 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 17:01:10,459 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:01:10,461 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 17:01:10,462 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 17:01:10,462 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:01:10,462 INFO L87 Difference]: Start difference. First operand 266 states and 296 transitions. Second operand 3 states. [2018-01-24 17:01:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:01:10,691 INFO L93 Difference]: Finished difference Result 390 states and 444 transitions. [2018-01-24 17:01:10,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 17:01:10,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 17:01:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:01:10,695 INFO L225 Difference]: With dead ends: 390 [2018-01-24 17:01:10,695 INFO L226 Difference]: Without dead ends: 382 [2018-01-24 17:01:10,696 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 17:01:10,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-01-24 17:01:10,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 337. [2018-01-24 17:01:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-01-24 17:01:10,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 415 transitions. [2018-01-24 17:01:10,728 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 415 transitions. Word has length 4 [2018-01-24 17:01:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:01:10,728 INFO L432 AbstractCegarLoop]: Abstraction has 337 states and 415 transitions. [2018-01-24 17:01:10,728 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 17:01:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 415 transitions. [2018-01-24 17:01:10,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 17:01:10,729 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:01:10,729 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 17:01:10,730 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, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, 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 17:01:10,730 INFO L82 PathProgramCache]: Analyzing trace with hash -416211489, now seen corresponding path program 1 times [2018-01-24 17:01:10,730 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:01:10,731 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:01:10,731 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:01:10,731 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:01:10,732 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:01:10,753 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 17:01:10,753 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 17:01:10,753 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 17:01:10,777 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:01:10,777 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 17:01:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:01:10,824 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-24 17:01:10,824 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 17:01:10,825 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:01:10,825 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 17:01:10,830 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:01:10,831 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:01:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:01:10,863 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:01:10,896 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 17:01:10,898 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:01:10,900 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 17:01:10,901 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 17:01:10,908 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 17:01:10,908 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:01:10,918 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 17:01:10,941 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:01:10,941 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-01-24 17:01:10,941 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:01:10,942 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 17:01:10,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 17:01:10,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 17:01:10,942 INFO L87 Difference]: Start difference. First operand 337 states and 415 transitions. Second operand 4 states. [2018-01-24 17:01:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:01:11,309 INFO L93 Difference]: Finished difference Result 337 states and 415 transitions. [2018-01-24 17:01:11,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 17:01:11,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 17:01:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:01:11,312 INFO L225 Difference]: With dead ends: 337 [2018-01-24 17:01:11,312 INFO L226 Difference]: Without dead ends: 336 [2018-01-24 17:01:11,313 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 17:01:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-01-24 17:01:11,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2018-01-24 17:01:11,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-01-24 17:01:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 414 transitions. [2018-01-24 17:01:11,337 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 414 transitions. Word has length 17 [2018-01-24 17:01:11,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:01:11,337 INFO L432 AbstractCegarLoop]: Abstraction has 336 states and 414 transitions. [2018-01-24 17:01:11,337 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 17:01:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 414 transitions. [2018-01-24 17:01:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 17:01:11,338 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:01:11,338 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 17:01:11,338 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, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, 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 17:01:11,339 INFO L82 PathProgramCache]: Analyzing trace with hash -416211488, now seen corresponding path program 1 times [2018-01-24 17:01:11,339 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:01:11,340 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:01:11,340 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:01:11,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:01:11,341 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:01:11,357 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 17:01:11,357 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 17:01:11,357 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 17:01:11,365 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:01:11,365 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 17:01:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:01:11,407 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-24 17:01:11,407 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-24 17:01:11,407 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:01:11,407 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 17:01:11,423 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:01:11,423 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:01:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:01:11,457 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:01:11,468 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 17:01:11,468 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:01:11,490 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 17:01:11,491 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 17:01:11,505 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 17:01:11,506 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:44 [2018-01-24 17:01:11,538 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 17:01:11,538 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:01:11,597 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 17:01:11,617 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:01:11,617 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2018-01-24 17:01:11,617 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:01:11,618 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 17:01:11,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 17:01:11,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:01:11,618 INFO L87 Difference]: Start difference. First operand 336 states and 414 transitions. Second operand 4 states. [2018-01-24 17:01:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:01:11,897 INFO L93 Difference]: Finished difference Result 336 states and 414 transitions. [2018-01-24 17:01:11,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 17:01:11,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 17:01:11,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:01:11,900 INFO L225 Difference]: With dead ends: 336 [2018-01-24 17:01:11,901 INFO L226 Difference]: Without dead ends: 335 [2018-01-24 17:01:11,901 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 17:01:11,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-01-24 17:01:11,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-01-24 17:01:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-01-24 17:01:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 413 transitions. [2018-01-24 17:01:11,920 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 413 transitions. Word has length 17 [2018-01-24 17:01:11,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:01:11,920 INFO L432 AbstractCegarLoop]: Abstraction has 335 states and 413 transitions. [2018-01-24 17:01:11,920 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 17:01:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 413 transitions. [2018-01-24 17:01:11,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-01-24 17:01:11,925 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:01:11,925 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 17:01:11,925 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, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr14EnsuresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, 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 17:01:11,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1095590031, now seen corresponding path program 1 times [2018-01-24 17:01:11,926 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:01:11,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:01:11,927 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:01:11,927 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:01:11,927 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:01:11,950 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-24 17:01:11,950 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-24 17:01:11,950 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 17:01:11,959 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:01:11,960 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-24 17:01:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:01:12,015 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2018-01-24 17:01:12,017 INFO L201 CegarAbsIntRunner]: [84], [172], [174], [178], [201], [202], [208], [209], [210], [212], [216], [239], [241], [245], [268], [270], [274], [297], [298], [299], [303], [304], [305], [307], [310], [324], [326], [329], [331], [332], [333], [334], [337], [423], [439], [440], [441], [443], [444], [445], [447], [448], [449], [451], [452], [453], [455], [456], [457], [458], [459], [460], [461], [462], [465], [466], [467] [2018-01-24 17:01:12,059 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:01:12,059 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:01:12,684 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:01:12,685 INFO L268 AbstractInterpreter]: Visited 57 different actions 142 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-01-24 17:01:12,691 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 17:01:12,692 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:01:12,692 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:01:12,705 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:01:12,705 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:01:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:01:12,843 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:01:12,855 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 17:01:12,856 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:01:12,865 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 17:01:12,865 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 17:01:12,998 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|calloc_model_#t~malloc0.base| Int)) (and (= 0 (select |c_old(#valid)| |calloc_model_#t~malloc0.base|)) (= |c_#valid| (store |c_old(#valid)| |calloc_model_#t~malloc0.base| 1)))) is different from true [2018-01-24 17:01:13,016 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:01:13,017 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-01-24 17:01:13,017 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:01:13,028 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-24 17:01:13,029 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-24 17:01:13,057 WARN L1029 $PredicateComparison]: unable to prove that (and (exists ((v_calloc_model_~ptr~5.base_BEFORE_CALL_7 Int)) (= 1 (select |c_#valid| v_calloc_model_~ptr~5.base_BEFORE_CALL_7))) (exists ((|calloc_model_#t~malloc0.base| Int)) (and (= 0 (select |c_old(#valid)| |calloc_model_#t~malloc0.base|)) (= |c_#valid| (store |c_old(#valid)| |calloc_model_#t~malloc0.base| 1))))) is different from true [2018-01-24 17:01:13,085 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:01:13,091 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:01:13,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-01-24 17:01:13,093 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:01:13,110 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-01-24 17:01:13,110 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:20 [2018-01-24 17:01:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 9 not checked. [2018-01-24 17:01:13,214 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:01:15,562 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 11489 column 11: unknown constant v_calloc_model_#t~malloc0.base_10 at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1362) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:582) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:222) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:146) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:200) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.assertTerm(ManagedScript.java:133) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:120) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.checkEqualityStatus(Elim1Store.java:667) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.analyzeIndexEqualities(Elim1Store.java:759) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:300) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:270) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:445) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:421) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:328) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:237) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-24 17:01:15,565 INFO L168 Benchmark]: Toolchain (without parser) took 7072.90 ms. Allocated memory was 306.2 MB in the beginning and 490.2 MB in the end (delta: 184.0 MB). Free memory was 266.2 MB in the beginning and 377.4 MB in the end (delta: -111.2 MB). Peak memory consumption was 72.9 MB. Max. memory is 5.3 GB. [2018-01-24 17:01:15,566 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 306.2 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:01:15,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.79 ms. Allocated memory is still 306.2 MB. Free memory was 265.2 MB in the beginning and 252.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:01:15,566 INFO L168 Benchmark]: Boogie Preprocessor took 52.56 ms. Allocated memory is still 306.2 MB. Free memory was 252.3 MB in the beginning and 250.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:01:15,566 INFO L168 Benchmark]: RCFGBuilder took 823.80 ms. Allocated memory is still 306.2 MB. Free memory was 250.3 MB in the beginning and 193.9 MB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 5.3 GB. [2018-01-24 17:01:15,566 INFO L168 Benchmark]: TraceAbstraction took 5940.89 ms. Allocated memory was 306.2 MB in the beginning and 490.2 MB in the end (delta: 184.0 MB). Free memory was 192.9 MB in the beginning and 377.4 MB in the end (delta: -184.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:01:15,568 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 306.2 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 247.79 ms. Allocated memory is still 306.2 MB. Free memory was 265.2 MB in the beginning and 252.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 52.56 ms. Allocated memory is still 306.2 MB. Free memory was 252.3 MB in the beginning and 250.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 823.80 ms. Allocated memory is still 306.2 MB. Free memory was 250.3 MB in the beginning and 193.9 MB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 5940.89 ms. Allocated memory was 306.2 MB in the beginning and 490.2 MB in the end (delta: 184.0 MB). Free memory was 192.9 MB in the beginning and 377.4 MB in the end (delta: -184.4 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 52 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 565 LocStat_NO_SUPPORTING_DISEQUALITIES : 162 LocStat_NO_DISJUNCTIONS : -104 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 77 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 174 TransStat_NO_SUPPORTING_DISEQUALITIES : 9 TransStat_NO_DISJUNCTIONS : 78 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.518221 RENAME_VARIABLES(MILLISECONDS) : 0.241454 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.463714 PROJECTAWAY(MILLISECONDS) : 0.118395 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001703 DISJOIN(MILLISECONDS) : 0.355757 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.273175 ADD_EQUALITY(MILLISECONDS) : 0.017378 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.029413 #CONJOIN_DISJUNCTIVE : 198 #RENAME_VARIABLES : 397 #UNFREEZE : 0 #CONJOIN : 392 #PROJECTAWAY : 317 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 90 #RENAME_VARIABLES_DISJUNCTIVE : 391 #ADD_EQUALITY : 174 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 5 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 11489 column 11: unknown constant v_calloc_model_#t~malloc0.base_10 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 11489 column 11: unknown constant v_calloc_model_#t~malloc0.base_10: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1362) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0235_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_17-01-15-576.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0235_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-24_17-01-15-576.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0235_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_17-01-15-576.csv Received shutdown request...