java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext_1_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 03:11:53,170 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 03:11:53,173 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 03:11:53,194 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 03:11:53,195 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 03:11:53,196 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 03:11:53,198 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 03:11:53,201 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 03:11:53,204 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 03:11:53,205 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 03:11:53,206 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 03:11:53,206 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 03:11:53,207 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 03:11:53,209 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 03:11:53,210 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 03:11:53,213 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 03:11:53,215 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 03:11:53,217 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 03:11:53,219 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 03:11:53,220 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 03:11:53,222 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 03:11:53,223 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 03:11:53,223 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 03:11:53,224 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 03:11:53,225 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 03:11:53,226 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 03:11:53,227 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 03:11:53,227 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 03:11:53,228 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 03:11:53,228 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 03:11:53,228 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 03:11:53,229 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-21 03:11:53,244 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 03:11:53,245 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 03:11:53,246 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 03:11:53,246 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 03:11:53,246 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 03:11:53,247 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 03:11:53,247 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 03:11:53,247 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 03:11:53,248 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 03:11:53,249 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 03:11:53,249 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 03:11:53,250 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 03:11:53,250 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 03:11:53,250 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 03:11:53,250 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 03:11:53,250 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 03:11:53,251 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 03:11:53,251 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 03:11:53,251 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 03:11:53,251 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 03:11:53,251 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 03:11:53,252 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 03:11:53,252 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 03:11:53,252 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 03:11:53,252 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 03:11:53,252 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 03:11:53,253 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 03:11:53,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 03:11:53,253 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 03:11:53,253 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 03:11:53,253 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 03:11:53,254 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 03:11:53,254 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 03:11:53,254 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 03:11:53,254 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 03:11:53,254 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 03:11:53,255 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 03:11:53,255 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 03:11:53,256 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 03:11:53,256 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 03:11:53,314 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 03:11:53,336 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 03:11:53,344 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 03:11:53,345 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 03:11:53,346 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 03:11:53,347 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext_1_true-valid-memsafety.i [2018-01-21 03:11:53,612 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 03:11:53,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 03:11:53,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 03:11:53,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 03:11:53,630 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 03:11:53,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:11:53" (1/1) ... [2018-01-21 03:11:53,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4454cf94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:11:53, skipping insertion in model container [2018-01-21 03:11:53,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 03:11:53" (1/1) ... [2018-01-21 03:11:53,656 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:11:53,709 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 03:11:53,855 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:11:53,885 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 03:11:53,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:11:53 WrapperNode [2018-01-21 03:11:53,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 03:11:53,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 03:11:53,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 03:11:53,893 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 03:11:53,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:11:53" (1/1) ... [2018-01-21 03:11:53,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:11:53" (1/1) ... [2018-01-21 03:11:53,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:11:53" (1/1) ... [2018-01-21 03:11:53,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:11:53" (1/1) ... [2018-01-21 03:11:53,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:11:53" (1/1) ... [2018-01-21 03:11:53,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:11:53" (1/1) ... [2018-01-21 03:11:53,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:11:53" (1/1) ... [2018-01-21 03:11:53,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 03:11:53,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 03:11:53,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 03:11:53,932 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 03:11:53,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:11:53" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 03:11:53,991 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 03:11:53,991 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 03:11:53,991 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-21 03:11:53,992 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 03:11:53,992 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 03:11:53,992 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 03:11:53,992 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 03:11:53,992 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 03:11:53,992 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 03:11:53,993 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 03:11:53,993 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 03:11:53,993 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 03:11:53,993 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 03:11:53,993 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 03:11:53,993 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 03:11:53,994 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-21 03:11:53,994 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 03:11:53,994 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 03:11:53,994 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 03:11:54,457 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 03:11:54,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:11:54 BoogieIcfgContainer [2018-01-21 03:11:54,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 03:11:54,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 03:11:54,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 03:11:54,461 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 03:11:54,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 03:11:53" (1/3) ... [2018-01-21 03:11:54,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d843047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:11:54, skipping insertion in model container [2018-01-21 03:11:54,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 03:11:53" (2/3) ... [2018-01-21 03:11:54,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d843047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 03:11:54, skipping insertion in model container [2018-01-21 03:11:54,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 03:11:54" (3/3) ... [2018-01-21 03:11:54,466 INFO L105 eAbstractionObserver]: Analyzing ICFG list-ext_1_true-valid-memsafety.i [2018-01-21 03:11:54,479 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 03:11:54,485 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 03:11:54,538 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:11:54,538 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:11:54,539 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:11:54,539 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:11:54,539 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:11:54,539 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:11:54,539 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:11:54,539 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == exitErr0EnsuresViolation======== [2018-01-21 03:11:54,540 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:11:54,559 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-01-21 03:11:54,571 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 03:11:54,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 70 states. [2018-01-21 03:11:54,745 INFO L401 ceAbstractionStarter]: For program point exitErr0EnsuresViolation(line 525) no Hoare annotation was computed. [2018-01-21 03:11:54,745 INFO L401 ceAbstractionStarter]: For program point exitFINAL(lines 619 621) no Hoare annotation was computed. [2018-01-21 03:11:54,746 INFO L404 ceAbstractionStarter]: At program point exitENTRY(lines 619 621) the Hoare annotation is: true [2018-01-21 03:11:54,746 INFO L401 ceAbstractionStarter]: For program point L620(line 620) no Hoare annotation was computed. [2018-01-21 03:11:54,746 INFO L401 ceAbstractionStarter]: For program point exitEXIT(lines 619 621) no Hoare annotation was computed. [2018-01-21 03:11:54,746 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 672) no Hoare annotation was computed. [2018-01-21 03:11:54,747 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 672) no Hoare annotation was computed. [2018-01-21 03:11:54,747 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 672) the Hoare annotation is: true [2018-01-21 03:11:54,747 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 672) no Hoare annotation was computed. [2018-01-21 03:11:54,747 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 672) the Hoare annotation is: true [2018-01-21 03:11:54,747 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 672) no Hoare annotation was computed. [2018-01-21 03:11:54,748 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 672) the Hoare annotation is: true [2018-01-21 03:11:54,748 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 672) no Hoare annotation was computed. [2018-01-21 03:11:54,748 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 672) no Hoare annotation was computed. [2018-01-21 03:11:54,748 INFO L401 ceAbstractionStarter]: For program point L641'''''(lines 641 648) no Hoare annotation was computed. [2018-01-21 03:11:54,748 INFO L401 ceAbstractionStarter]: For program point L629(line 629) no Hoare annotation was computed. [2018-01-21 03:11:54,748 INFO L401 ceAbstractionStarter]: For program point L635'(line 635) no Hoare annotation was computed. [2018-01-21 03:11:54,749 INFO L401 ceAbstractionStarter]: For program point L641''''''(lines 641 648) no Hoare annotation was computed. [2018-01-21 03:11:54,749 INFO L401 ceAbstractionStarter]: For program point L658'''(lines 658 661) no Hoare annotation was computed. [2018-01-21 03:11:54,749 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 626 672) no Hoare annotation was computed. [2018-01-21 03:11:54,749 INFO L401 ceAbstractionStarter]: For program point L641(lines 641 648) no Hoare annotation was computed. [2018-01-21 03:11:54,749 INFO L401 ceAbstractionStarter]: For program point L645(line 645) no Hoare annotation was computed. [2018-01-21 03:11:54,749 INFO L401 ceAbstractionStarter]: For program point L644(line 644) no Hoare annotation was computed. [2018-01-21 03:11:54,750 INFO L401 ceAbstractionStarter]: For program point L643(line 643) no Hoare annotation was computed. [2018-01-21 03:11:54,750 INFO L401 ceAbstractionStarter]: For program point L660'(line 660) no Hoare annotation was computed. [2018-01-21 03:11:54,750 INFO L401 ceAbstractionStarter]: For program point L649(line 649) no Hoare annotation was computed. [2018-01-21 03:11:54,750 INFO L401 ceAbstractionStarter]: For program point L647(line 647) no Hoare annotation was computed. [2018-01-21 03:11:54,750 INFO L401 ceAbstractionStarter]: For program point L646(line 646) no Hoare annotation was computed. [2018-01-21 03:11:54,751 INFO L404 ceAbstractionStarter]: At program point L645'(line 645) the Hoare annotation is: true [2018-01-21 03:11:54,751 INFO L401 ceAbstractionStarter]: For program point L633'(line 633) no Hoare annotation was computed. [2018-01-21 03:11:54,751 INFO L401 ceAbstractionStarter]: For program point L629'(line 629) no Hoare annotation was computed. [2018-01-21 03:11:54,751 INFO L401 ceAbstractionStarter]: For program point L637'''(line 637) no Hoare annotation was computed. [2018-01-21 03:11:54,751 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 626 672) no Hoare annotation was computed. [2018-01-21 03:11:54,751 INFO L401 ceAbstractionStarter]: For program point L630(line 630) no Hoare annotation was computed. [2018-01-21 03:11:54,752 INFO L401 ceAbstractionStarter]: For program point L665''''(lines 665 669) no Hoare annotation was computed. [2018-01-21 03:11:54,752 INFO L401 ceAbstractionStarter]: For program point L633(lines 633 640) no Hoare annotation was computed. [2018-01-21 03:11:54,752 INFO L401 ceAbstractionStarter]: For program point L638(line 638) no Hoare annotation was computed. [2018-01-21 03:11:54,752 INFO L401 ceAbstractionStarter]: For program point L637(line 637) no Hoare annotation was computed. [2018-01-21 03:11:54,752 INFO L401 ceAbstractionStarter]: For program point L636(line 636) no Hoare annotation was computed. [2018-01-21 03:11:54,753 INFO L404 ceAbstractionStarter]: At program point L665'''(lines 665 669) the Hoare annotation is: true [2018-01-21 03:11:54,753 INFO L401 ceAbstractionStarter]: For program point L635(line 635) no Hoare annotation was computed. [2018-01-21 03:11:54,753 INFO L401 ceAbstractionStarter]: For program point L658'(line 658) no Hoare annotation was computed. [2018-01-21 03:11:54,753 INFO L401 ceAbstractionStarter]: For program point L639(line 639) no Hoare annotation was computed. [2018-01-21 03:11:54,754 INFO L401 ceAbstractionStarter]: For program point L663(line 663) no Hoare annotation was computed. [2018-01-21 03:11:54,754 INFO L401 ceAbstractionStarter]: For program point L662(line 662) no Hoare annotation was computed. [2018-01-21 03:11:54,759 INFO L401 ceAbstractionStarter]: For program point L660(line 660) no Hoare annotation was computed. [2018-01-21 03:11:54,759 INFO L404 ceAbstractionStarter]: At program point L630'(line 630) the Hoare annotation is: true [2018-01-21 03:11:54,760 INFO L401 ceAbstractionStarter]: For program point L645'''(line 645) no Hoare annotation was computed. [2018-01-21 03:11:54,760 INFO L401 ceAbstractionStarter]: For program point L667(line 667) no Hoare annotation was computed. [2018-01-21 03:11:54,760 INFO L401 ceAbstractionStarter]: For program point L666(line 666) no Hoare annotation was computed. [2018-01-21 03:11:54,761 INFO L401 ceAbstractionStarter]: For program point L665(lines 665 669) no Hoare annotation was computed. [2018-01-21 03:11:54,761 INFO L401 ceAbstractionStarter]: For program point L667'(line 667) no Hoare annotation was computed. [2018-01-21 03:11:54,761 INFO L401 ceAbstractionStarter]: For program point L643'(line 643) no Hoare annotation was computed. [2018-01-21 03:11:54,761 INFO L404 ceAbstractionStarter]: At program point L654'''(lines 654 657) the Hoare annotation is: true [2018-01-21 03:11:54,761 INFO L401 ceAbstractionStarter]: For program point L650(line 650) no Hoare annotation was computed. [2018-01-21 03:11:54,761 INFO L401 ceAbstractionStarter]: For program point L656(line 656) no Hoare annotation was computed. [2018-01-21 03:11:54,763 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 626 672) no Hoare annotation was computed. [2018-01-21 03:11:54,764 INFO L401 ceAbstractionStarter]: For program point L654(lines 654 657) no Hoare annotation was computed. [2018-01-21 03:11:54,764 INFO L401 ceAbstractionStarter]: For program point L658(lines 658 661) no Hoare annotation was computed. [2018-01-21 03:11:54,764 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 626 672) the Hoare annotation is: true [2018-01-21 03:11:54,764 INFO L404 ceAbstractionStarter]: At program point L633'''''(lines 633 640) the Hoare annotation is: true [2018-01-21 03:11:54,765 INFO L401 ceAbstractionStarter]: For program point L656'(line 656) no Hoare annotation was computed. [2018-01-21 03:11:54,765 INFO L401 ceAbstractionStarter]: For program point L630'''(line 630) no Hoare annotation was computed. [2018-01-21 03:11:54,765 INFO L401 ceAbstractionStarter]: For program point L662''(lines 662 663) no Hoare annotation was computed. [2018-01-21 03:11:54,765 INFO L401 ceAbstractionStarter]: For program point L658''''(lines 658 661) no Hoare annotation was computed. [2018-01-21 03:11:54,765 INFO L404 ceAbstractionStarter]: At program point L637'(line 637) the Hoare annotation is: true [2018-01-21 03:11:54,765 INFO L401 ceAbstractionStarter]: For program point L665'(line 665) no Hoare annotation was computed. [2018-01-21 03:11:54,766 INFO L401 ceAbstractionStarter]: For program point L633'''(line 633) no Hoare annotation was computed. [2018-01-21 03:11:54,766 INFO L401 ceAbstractionStarter]: For program point L670(line 670) no Hoare annotation was computed. [2018-01-21 03:11:54,766 INFO L401 ceAbstractionStarter]: For program point L641'(line 641) no Hoare annotation was computed. [2018-01-21 03:11:54,766 INFO L401 ceAbstractionStarter]: For program point L641'''(line 641) no Hoare annotation was computed. [2018-01-21 03:11:54,766 INFO L401 ceAbstractionStarter]: For program point L666'(line 666) no Hoare annotation was computed. [2018-01-21 03:11:54,768 INFO L401 ceAbstractionStarter]: For program point L654'(line 654) no Hoare annotation was computed. [2018-01-21 03:11:54,776 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:11:54,776 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:11:54,776 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:11:54,776 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:11:54,776 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:11:54,776 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:11:54,777 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:11:54,777 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 03:11:54,777 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:11:54,783 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-01-21 03:11:54,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 03:11:54,784 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:11:54,786 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 03:11:54,786 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 03:11:54,793 INFO L82 PathProgramCache]: Analyzing trace with hash 188257, now seen corresponding path program 1 times [2018-01-21 03:11:54,796 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:11:54,821 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:54,821 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:11:54,821 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:54,821 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:11:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:11:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:11:54,891 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:11:54,897 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:11:54,903 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:11:54,903 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:11:54,903 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:11:54,903 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:11:54,903 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:11:54,904 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:11:54,904 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:11:54,904 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 03:11:54,904 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:11:54,909 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-01-21 03:11:54,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-21 03:11:54,915 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:11:54,915 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, 1, 1, 1, 1] [2018-01-21 03:11:54,916 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:11:54,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1932365681, now seen corresponding path program 1 times [2018-01-21 03:11:54,916 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:11:54,917 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:54,918 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:11:54,918 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:54,919 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:11:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:11:54,950 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:11:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:11:55,104 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:11:55,105 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 03:11:55,105 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:11:55,107 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 03:11:55,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 03:11:55,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:11:55,119 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 2 states. [2018-01-21 03:11:55,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:11:55,140 INFO L93 Difference]: Finished difference Result 116 states and 139 transitions. [2018-01-21 03:11:55,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 03:11:55,141 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-21 03:11:55,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:11:55,149 INFO L225 Difference]: With dead ends: 116 [2018-01-21 03:11:55,149 INFO L226 Difference]: Without dead ends: 61 [2018-01-21 03:11:55,151 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:11:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-21 03:11:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-01-21 03:11:55,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-01-21 03:11:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 67 transitions. [2018-01-21 03:11:55,181 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 67 transitions. Word has length 26 [2018-01-21 03:11:55,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:11:55,181 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 67 transitions. [2018-01-21 03:11:55,182 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 03:11:55,182 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 67 transitions. [2018-01-21 03:11:55,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-21 03:11:55,183 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:11:55,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:11:55,183 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 03:11:55,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1521926025, now seen corresponding path program 1 times [2018-01-21 03:11:55,183 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:11:55,184 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:55,184 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:11:55,185 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:55,185 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:11:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:11:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 03:11:55,275 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 03:11:55,285 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:11:55,290 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:11:55,290 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 03:11:55,301 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 03:11:55,301 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 03:11:55,301 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 03:11:55,301 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 03:11:55,301 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 03:11:55,301 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 03:11:55,301 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 03:11:55,301 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 03:11:55,301 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 03:11:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2018-01-21 03:11:55,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-21 03:11:55,304 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:11:55,304 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, 1, 1] [2018-01-21 03:11:55,304 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 03:11:55,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1812064646, now seen corresponding path program 1 times [2018-01-21 03:11:55,305 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:11:55,305 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:55,306 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:11:55,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:55,306 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:11:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:11:55,314 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:11:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:11:55,328 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:11:55,328 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 03:11:55,328 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:11:55,328 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 03:11:55,328 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 03:11:55,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:11:55,329 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 2 states. [2018-01-21 03:11:55,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:11:55,337 INFO L93 Difference]: Finished difference Result 116 states and 139 transitions. [2018-01-21 03:11:55,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 03:11:55,337 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-01-21 03:11:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:11:55,338 INFO L225 Difference]: With dead ends: 116 [2018-01-21 03:11:55,339 INFO L226 Difference]: Without dead ends: 59 [2018-01-21 03:11:55,340 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 03:11:55,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-01-21 03:11:55,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-01-21 03:11:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-01-21 03:11:55,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2018-01-21 03:11:55,347 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 24 [2018-01-21 03:11:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:11:55,347 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2018-01-21 03:11:55,347 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 03:11:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2018-01-21 03:11:55,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-21 03:11:55,349 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:11:55,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 03:11:55,349 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 03:11:55,349 INFO L82 PathProgramCache]: Analyzing trace with hash 314432500, now seen corresponding path program 1 times [2018-01-21 03:11:55,349 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:11:55,350 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:55,351 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:11:55,351 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:55,351 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:11:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:11:55,378 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:11:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:11:55,567 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 03:11:55,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 03:11:55,567 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 03:11:55,567 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 03:11:55,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 03:11:55,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 03:11:55,568 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 6 states. [2018-01-21 03:11:56,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 03:11:56,176 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2018-01-21 03:11:56,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 03:11:56,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2018-01-21 03:11:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 03:11:56,181 INFO L225 Difference]: With dead ends: 118 [2018-01-21 03:11:56,182 INFO L226 Difference]: Without dead ends: 114 [2018-01-21 03:11:56,183 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-01-21 03:11:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-21 03:11:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2018-01-21 03:11:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-01-21 03:11:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2018-01-21 03:11:56,195 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 36 [2018-01-21 03:11:56,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 03:11:56,196 INFO L432 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2018-01-21 03:11:56,196 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 03:11:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2018-01-21 03:11:56,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-21 03:11:56,198 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 03:11:56,199 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 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] [2018-01-21 03:11:56,199 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 03:11:56,199 INFO L82 PathProgramCache]: Analyzing trace with hash 721961098, now seen corresponding path program 1 times [2018-01-21 03:11:56,199 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 03:11:56,200 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:56,201 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 03:11:56,201 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 03:11:56,201 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 03:11:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 03:11:56,239 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 03:11:56,989 WARN L146 SmtUtils]: Spent 117ms on a formula simplification. DAG size of input: 24 DAG size of output 13 [2018-01-21 03:11:57,168 WARN L146 SmtUtils]: Spent 103ms on a formula simplification. DAG size of input: 15 DAG size of output 4 [2018-01-21 03:11:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 03:11:57,292 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 03:11:57,293 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 03:11:57,294 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 44 with the following transitions: [2018-01-21 03:11:57,299 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [8], [10], [14], [16], [19], [25], [46], [48], [51], [57], [76], [77], [78], [82], [84], [87], [97], [99], [102], [110], [117], [119], [123], [125], [128], [130], [131], [132], [133], [134], [138], [139], [141], [147], [148], [160], [161], [162] [2018-01-21 03:11:57,386 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 03:11:57,387 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown