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_imprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/mult_array_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:29:05,514 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:29:05,517 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:29:05,531 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:29:05,531 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:29:05,532 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:29:05,533 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:29:05,534 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:29:05,536 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:29:05,536 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:29:05,537 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 00:29:05,538 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 00:29:05,539 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 00:29:05,540 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 00:29:05,541 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 00:29:05,543 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 00:29:05,545 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 00:29:05,547 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 00:29:05,549 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 00:29:05,550 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 00:29:05,552 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 00:29:05,557 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 00:29:05,558 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 00:29:05,558 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_imprecise.epf [2018-01-21 00:29:05,566 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:29:05,566 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:29:05,567 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:29:05,567 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:29:05,567 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:29:05,567 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 00:29:05,567 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:29:05,567 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:29:05,568 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:29:05,568 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:29:05,568 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:29:05,568 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:29:05,569 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:29:05,569 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:29:05,569 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:29:05,569 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:29:05,569 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:29:05,569 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:29:05,569 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:29:05,569 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:29:05,570 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:29:05,570 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:29:05,570 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:29:05,570 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:29:05,570 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:29:05,571 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:29:05,571 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:29:05,571 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:29:05,571 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:29:05,571 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:29:05,571 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:29:05,571 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:29:05,572 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:29:05,572 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:29:05,572 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:29:05,572 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:29:05,572 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:29:05,573 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:29:05,573 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:29:05,606 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:29:05,618 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:29:05,621 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:29:05,622 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:29:05,623 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:29:05,623 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/mult_array_unsafe_false-valid-deref.i [2018-01-21 00:29:05,781 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:29:05,786 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:29:05,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:29:05,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:29:05,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:29:05,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:29:05" (1/1) ... [2018-01-21 00:29:05,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2fa6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:05, skipping insertion in model container [2018-01-21 00:29:05,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:29:05" (1/1) ... [2018-01-21 00:29:05,810 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:29:05,849 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:29:05,975 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:29:05,992 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:29:06,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:06 WrapperNode [2018-01-21 00:29:06,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:29:06,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:29:06,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:29:06,001 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:29:06,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:06" (1/1) ... [2018-01-21 00:29:06,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:06" (1/1) ... [2018-01-21 00:29:06,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:06" (1/1) ... [2018-01-21 00:29:06,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:06" (1/1) ... [2018-01-21 00:29:06,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:06" (1/1) ... [2018-01-21 00:29:06,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:06" (1/1) ... [2018-01-21 00:29:06,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:06" (1/1) ... [2018-01-21 00:29:06,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:29:06,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:29:06,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:29:06,038 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:29:06,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:06" (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 00:29:06,086 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:29:06,086 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:29:06,086 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:29:06,086 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:29:06,087 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:29:06,087 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:29:06,087 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:29:06,087 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:29:06,087 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:29:06,087 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:29:06,087 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:29:06,087 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:29:06,289 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:29:06,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:29:06 BoogieIcfgContainer [2018-01-21 00:29:06,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:29:06,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:29:06,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:29:06,293 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:29:06,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:29:05" (1/3) ... [2018-01-21 00:29:06,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d902ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:29:06, skipping insertion in model container [2018-01-21 00:29:06,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:29:06" (2/3) ... [2018-01-21 00:29:06,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d902ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:29:06, skipping insertion in model container [2018-01-21 00:29:06,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:29:06" (3/3) ... [2018-01-21 00:29:06,297 INFO L105 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe_false-valid-deref.i [2018-01-21 00:29:06,304 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:29:06,309 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 00:29:06,356 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:29:06,356 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:29:06,356 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:29:06,356 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:29:06,356 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:29:06,356 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:29:06,357 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:29:06,357 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:29:06,357 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:29:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 00:29:06,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:29:06,378 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:06,379 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:29:06,380 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:29:06,385 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-21 00:29:06,388 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:06,430 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:06,430 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:06,430 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:06,431 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:29:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:29:06,484 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:29:06,490 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:29:06,495 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:29:06,495 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:29:06,496 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:29:06,496 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:29:06,496 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:29:06,496 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:29:06,496 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:29:06,496 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:29:06,496 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:29:06,498 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 00:29:06,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 00:29:06,499 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:06,499 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] [2018-01-21 00:29:06,499 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:29:06,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1756096489, now seen corresponding path program 1 times [2018-01-21 00:29:06,499 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:06,500 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:06,501 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:06,501 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:06,501 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:06,517 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:06,518 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:06,518 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 [2018-01-21 00:29:06,527 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:06,527 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:06,573 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 00:29:06,575 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:29:06,576 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:06,576 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 [2018-01-21 00:29:06,582 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:06,583 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:06,626 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:06,746 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 00:29:06,746 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:06,791 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 00:29:06,814 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:06,814 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-01-21 00:29:06,815 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:06,816 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 00:29:06,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 00:29:06,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-21 00:29:06,900 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-21 00:29:07,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:07,156 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-21 00:29:07,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 00:29:07,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-21 00:29:07,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:07,169 INFO L225 Difference]: With dead ends: 60 [2018-01-21 00:29:07,169 INFO L226 Difference]: Without dead ends: 35 [2018-01-21 00:29:07,173 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-01-21 00:29:07,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-21 00:29:07,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-21 00:29:07,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-21 00:29:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-21 00:29:07,205 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2018-01-21 00:29:07,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:07,206 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-21 00:29:07,206 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 00:29:07,206 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-21 00:29:07,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 00:29:07,207 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:07,208 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] [2018-01-21 00:29:07,208 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:29:07,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1252120768, now seen corresponding path program 1 times [2018-01-21 00:29:07,208 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:07,209 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:07,209 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:07,209 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:07,209 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:07,218 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:07,218 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:07,218 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 [2018-01-21 00:29:07,227 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:07,227 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:07,259 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 00:29:07,259 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:29:07,259 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:07,259 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 [2018-01-21 00:29:07,265 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:07,265 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:07,283 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:07,299 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 00:29:07,300 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:07,323 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 00:29:07,347 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:07,347 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-01-21 00:29:07,347 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:07,348 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 00:29:07,348 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 00:29:07,348 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 00:29:07,348 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2018-01-21 00:29:07,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:07,401 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2018-01-21 00:29:07,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 00:29:07,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-21 00:29:07,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:07,403 INFO L225 Difference]: With dead ends: 56 [2018-01-21 00:29:07,403 INFO L226 Difference]: Without dead ends: 40 [2018-01-21 00:29:07,405 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 00:29:07,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-21 00:29:07,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-01-21 00:29:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-21 00:29:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-21 00:29:07,411 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 27 [2018-01-21 00:29:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:07,411 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-21 00:29:07,411 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 00:29:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-21 00:29:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 00:29:07,413 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:07,413 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 00:29:07,413 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:29:07,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1880809997, now seen corresponding path program 1 times [2018-01-21 00:29:07,413 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:07,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:07,414 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:07,415 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:07,415 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:07,423 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:07,424 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:07,424 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 [2018-01-21 00:29:07,436 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:07,436 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:07,481 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 00:29:07,483 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [10], [14], [17], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [72], [74], [75], [76], [77] [2018-01-21 00:29:07,540 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:29:07,540 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:29:07,742 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:29:07,744 INFO L268 AbstractInterpreter]: Visited 31 different actions 47 times. Merged at 15 different actions 15 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 27 variables. [2018-01-21 00:29:07,760 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:29:07,760 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:07,761 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 [2018-01-21 00:29:07,767 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:07,768 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:07,785 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:07,813 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:07,920 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:07,921 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-21 00:29:07,921 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:07,921 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:29:07,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:29:07,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:29:07,922 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-01-21 00:29:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:08,002 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2018-01-21 00:29:08,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:29:08,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 00:29:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:08,005 INFO L225 Difference]: With dead ends: 102 [2018-01-21 00:29:08,006 INFO L226 Difference]: Without dead ends: 93 [2018-01-21 00:29:08,006 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:29:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-21 00:29:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2018-01-21 00:29:08,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 00:29:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-21 00:29:08,014 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-21 00:29:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:08,014 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-21 00:29:08,014 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:29:08,014 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-21 00:29:08,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 00:29:08,015 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:08,015 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 00:29:08,015 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:29:08,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2014823503, now seen corresponding path program 1 times [2018-01-21 00:29:08,016 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:08,016 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:08,017 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:08,017 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:08,017 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:08,027 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:08,027 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:08,028 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:29:08,036 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:08,036 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:08,076 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 00:29:08,076 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [10], [14], [19], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [72], [74], [75], [76], [77] [2018-01-21 00:29:08,078 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:29:08,078 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:29:08,204 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:29:08,204 INFO L268 AbstractInterpreter]: Visited 31 different actions 47 times. Merged at 15 different actions 15 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 27 variables. [2018-01-21 00:29:08,218 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:29:08,219 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:08,219 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:29:08,230 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:08,230 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:08,252 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:08,281 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:08,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:08,398 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:08,399 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-21 00:29:08,399 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:08,399 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:29:08,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:29:08,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:29:08,400 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-21 00:29:08,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:08,473 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-01-21 00:29:08,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:29:08,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 00:29:08,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:08,475 INFO L225 Difference]: With dead ends: 95 [2018-01-21 00:29:08,475 INFO L226 Difference]: Without dead ends: 86 [2018-01-21 00:29:08,475 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:29:08,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-21 00:29:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2018-01-21 00:29:08,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 00:29:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-21 00:29:08,484 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-21 00:29:08,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:08,484 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-21 00:29:08,484 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:29:08,484 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-21 00:29:08,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 00:29:08,485 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:08,485 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 00:29:08,485 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:29:08,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1818770383, now seen corresponding path program 1 times [2018-01-21 00:29:08,486 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:08,486 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:08,486 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:08,486 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:08,487 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:08,493 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:08,493 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:08,493 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:29:08,504 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:08,505 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:08,532 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 00:29:08,532 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [12], [14], [17], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [72], [74], [75], [76], [77] [2018-01-21 00:29:08,533 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:29:08,533 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:29:08,639 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:29:08,639 INFO L268 AbstractInterpreter]: Visited 31 different actions 47 times. Merged at 15 different actions 15 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 27 variables. [2018-01-21 00:29:08,647 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:29:08,648 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:08,648 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:29:08,661 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:08,662 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:08,681 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:08,708 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:08,784 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:08,784 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-01-21 00:29:08,784 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:08,784 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:29:08,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:29:08,784 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:29:08,785 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-21 00:29:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:08,858 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-01-21 00:29:08,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:29:08,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 00:29:08,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:08,860 INFO L225 Difference]: With dead ends: 110 [2018-01-21 00:29:08,860 INFO L226 Difference]: Without dead ends: 101 [2018-01-21 00:29:08,861 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:29:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-21 00:29:08,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 54. [2018-01-21 00:29:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 00:29:08,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-21 00:29:08,869 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-21 00:29:08,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:08,869 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-21 00:29:08,869 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:29:08,869 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-21 00:29:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 00:29:08,870 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:08,871 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 00:29:08,871 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:29:08,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1952783889, now seen corresponding path program 1 times [2018-01-21 00:29:08,871 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:08,872 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:08,872 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:08,872 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:08,873 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:08,879 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:08,880 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:08,880 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:29:08,896 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:08,896 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:08,938 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 00:29:08,938 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [12], [14], [19], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [72], [74], [75], [76], [77] [2018-01-21 00:29:08,940 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:29:08,940 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:29:09,038 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:29:09,039 INFO L268 AbstractInterpreter]: Visited 31 different actions 47 times. Merged at 15 different actions 15 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 27 variables. [2018-01-21 00:29:09,045 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:29:09,045 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:09,045 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:29:09,051 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,051 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:09,071 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:09,091 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:09,196 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:09,196 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-01-21 00:29:09,196 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:09,196 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:29:09,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:29:09,197 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:29:09,197 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-21 00:29:09,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:09,258 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2018-01-21 00:29:09,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:29:09,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 00:29:09,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:09,260 INFO L225 Difference]: With dead ends: 69 [2018-01-21 00:29:09,260 INFO L226 Difference]: Without dead ends: 60 [2018-01-21 00:29:09,260 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:29:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-21 00:29:09,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2018-01-21 00:29:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-21 00:29:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-01-21 00:29:09,267 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2018-01-21 00:29:09,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:09,267 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-01-21 00:29:09,268 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:29:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-01-21 00:29:09,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-21 00:29:09,269 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:09,269 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] [2018-01-21 00:29:09,269 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:29:09,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1166525403, now seen corresponding path program 1 times [2018-01-21 00:29:09,269 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:09,270 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:09,271 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:09,271 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:09,279 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:09,280 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:09,280 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:29:09,285 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,286 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:29:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:29:09,355 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:29:09,363 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:29:09,369 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:29:09,370 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:29:09,383 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:29:09,384 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:29:09,384 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:29:09,384 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:29:09,384 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:29:09,384 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:29:09,384 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:29:09,384 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:29:09,384 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:29:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 00:29:09,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 00:29:09,386 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:09,387 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:29:09,387 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 00:29:09,387 INFO L82 PathProgramCache]: Analyzing trace with hash 2112136767, now seen corresponding path program 1 times [2018-01-21 00:29:09,387 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:09,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:09,388 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,388 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:09,388 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:09,394 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:09,394 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:09,394 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:29:09,409 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,409 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:09,462 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 00:29:09,463 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:29:09,463 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:09,463 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:29:09,471 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,471 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:09,487 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:09,532 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 00:29:09,532 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:09,537 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 00:29:09,572 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:09,572 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-01-21 00:29:09,573 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:09,573 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 00:29:09,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 00:29:09,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-21 00:29:09,573 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-21 00:29:09,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:09,700 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-21 00:29:09,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 00:29:09,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-21 00:29:09,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:09,701 INFO L225 Difference]: With dead ends: 60 [2018-01-21 00:29:09,701 INFO L226 Difference]: Without dead ends: 33 [2018-01-21 00:29:09,702 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-01-21 00:29:09,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-21 00:29:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-21 00:29:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-21 00:29:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-01-21 00:29:09,706 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-01-21 00:29:09,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:09,706 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-01-21 00:29:09,706 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 00:29:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-01-21 00:29:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 00:29:09,707 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:09,708 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] [2018-01-21 00:29:09,708 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 00:29:09,708 INFO L82 PathProgramCache]: Analyzing trace with hash 197950760, now seen corresponding path program 1 times [2018-01-21 00:29:09,708 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:09,709 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:09,709 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,709 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:09,709 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:09,715 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:09,716 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:09,716 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:29:09,723 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,724 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:09,751 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 00:29:09,751 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:29:09,751 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:09,751 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:29:09,758 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,758 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:09,782 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:09,794 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 00:29:09,794 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:09,807 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 00:29:09,828 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:09,828 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-01-21 00:29:09,828 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:09,829 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 00:29:09,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 00:29:09,829 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 00:29:09,829 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2018-01-21 00:29:09,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:09,849 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2018-01-21 00:29:09,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 00:29:09,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-21 00:29:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:09,850 INFO L225 Difference]: With dead ends: 52 [2018-01-21 00:29:09,850 INFO L226 Difference]: Without dead ends: 38 [2018-01-21 00:29:09,851 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 00:29:09,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-21 00:29:09,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-01-21 00:29:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-21 00:29:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-21 00:29:09,853 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 25 [2018-01-21 00:29:09,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:09,854 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-21 00:29:09,854 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 00:29:09,854 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-21 00:29:09,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 00:29:09,855 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:09,855 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 00:29:09,855 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 00:29:09,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1753910501, now seen corresponding path program 1 times [2018-01-21 00:29:09,855 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:09,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:09,856 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:09,856 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:09,861 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:09,861 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:09,862 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:29:09,869 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,869 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:09,895 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 00:29:09,895 INFO L201 CegarAbsIntRunner]: [0], [1], [7], [10], [14], [17], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [73], [74], [75], [76] [2018-01-21 00:29:09,896 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:29:09,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:29:09,967 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:29:09,967 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 15 different actions 15 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 00:29:09,972 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:29:09,972 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:09,972 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:29:09,977 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:09,977 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:09,990 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:10,015 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:10,071 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:10,071 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-21 00:29:10,071 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:10,071 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:29:10,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:29:10,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:29:10,071 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2018-01-21 00:29:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:10,119 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2018-01-21 00:29:10,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:29:10,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-21 00:29:10,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:10,120 INFO L225 Difference]: With dead ends: 98 [2018-01-21 00:29:10,120 INFO L226 Difference]: Without dead ends: 91 [2018-01-21 00:29:10,120 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:29:10,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-21 00:29:10,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 52. [2018-01-21 00:29:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-21 00:29:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-21 00:29:10,127 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-21 00:29:10,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:10,127 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-21 00:29:10,127 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:29:10,127 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-21 00:29:10,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 00:29:10,128 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:10,128 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 00:29:10,129 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-21 00:29:10,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1535055783, now seen corresponding path program 1 times [2018-01-21 00:29:10,129 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:10,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:10,130 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:10,130 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:10,130 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:10,136 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:10,136 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:10,136 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:29:10,143 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:10,143 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:10,172 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 00:29:10,172 INFO L201 CegarAbsIntRunner]: [0], [1], [7], [10], [14], [19], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [73], [74], [75], [76] [2018-01-21 00:29:10,174 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:29:10,175 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:29:10,239 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:29:10,239 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 15 different actions 15 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 00:29:10,241 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:29:10,241 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:10,241 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:29:10,256 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:10,257 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:10,277 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:10,307 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:10,418 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:10,419 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-21 00:29:10,419 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:10,419 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:29:10,419 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:29:10,419 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:29:10,420 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-21 00:29:10,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:10,469 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2018-01-21 00:29:10,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:29:10,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-21 00:29:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:10,471 INFO L225 Difference]: With dead ends: 91 [2018-01-21 00:29:10,471 INFO L226 Difference]: Without dead ends: 84 [2018-01-21 00:29:10,472 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:29:10,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-21 00:29:10,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 52. [2018-01-21 00:29:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-21 00:29:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-21 00:29:10,478 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-21 00:29:10,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:10,478 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-21 00:29:10,478 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:29:10,479 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-21 00:29:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 00:29:10,479 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:10,480 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 00:29:10,480 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-21 00:29:10,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1887924007, now seen corresponding path program 1 times [2018-01-21 00:29:10,480 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:10,481 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:10,481 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:10,481 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:10,481 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:10,486 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:10,487 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:10,487 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:29:10,506 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:10,506 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:10,546 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 00:29:10,546 INFO L201 CegarAbsIntRunner]: [0], [1], [7], [12], [14], [17], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [73], [74], [75], [76] [2018-01-21 00:29:10,547 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:29:10,547 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:29:10,616 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:29:10,616 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 15 different actions 15 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 00:29:10,618 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:29:10,619 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:10,619 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:29:10,627 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:10,628 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:10,646 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:10,690 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:10,771 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:10,772 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-01-21 00:29:10,772 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:10,772 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:29:10,772 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:29:10,772 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:29:10,772 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-21 00:29:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:10,821 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2018-01-21 00:29:10,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:29:10,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-21 00:29:10,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:10,822 INFO L225 Difference]: With dead ends: 106 [2018-01-21 00:29:10,822 INFO L226 Difference]: Without dead ends: 99 [2018-01-21 00:29:10,823 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:29:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-21 00:29:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 52. [2018-01-21 00:29:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-21 00:29:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-21 00:29:10,829 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-21 00:29:10,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:10,829 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-21 00:29:10,829 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:29:10,829 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-21 00:29:10,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 00:29:10,830 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:29:10,830 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 00:29:10,830 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation]=== [2018-01-21 00:29:10,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1669069289, now seen corresponding path program 1 times [2018-01-21 00:29:10,831 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:29:10,831 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:10,832 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:10,832 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:29:10,832 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:29:10,837 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:29:10,837 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:29:10,837 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:29:10,849 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:10,849 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:29:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:10,876 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 00:29:10,876 INFO L201 CegarAbsIntRunner]: [0], [1], [7], [12], [14], [19], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [73], [74], [75], [76] [2018-01-21 00:29:10,877 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:29:10,877 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:29:10,931 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:29:10,931 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 15 different actions 15 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 00:29:10,943 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:29:10,944 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:29:10,944 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:29:10,970 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:29:10,970 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:29:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:29:10,989 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:29:11,114 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc2.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc2.base| 1))) (and (= |c_#valid| (store (store .cse0 |c_main_#t~malloc3.base| 1) |main_#t~malloc2.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc2.base|) 0) (= (select .cse0 |c_main_#t~malloc3.base|) 0)))) is different from true [2018-01-21 00:29:11,126 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc2.base| Int) (|main_#t~malloc3.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc2.base| 1))) (and (= |c_#valid| (store (store (store .cse0 |main_#t~malloc3.base| 1) |main_#t~malloc2.base| 0) |main_#t~malloc3.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc2.base|) 0) (= (select .cse0 |main_#t~malloc3.base|) 0)))) is different from true [2018-01-21 00:29:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:11,131 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:29:11,163 WARN L1007 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc3.base_70| Int)) (or (= |c_old(#valid)| (store (store (store |c_#valid| |v_main_#t~malloc3.base_70| 1) |c_main_#t~malloc2.base| 0) |v_main_#t~malloc3.base_70| 0)) (not (= (select |c_#valid| |v_main_#t~malloc3.base_70|) 0)))) is different from false [2018-01-21 00:29:11,168 WARN L1007 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc3.base_70| Int) (|v_main_#t~malloc2.base_70| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc2.base_70| 1))) (or (not (= (select |c_#valid| |v_main_#t~malloc2.base_70|) 0)) (= (store (store (store .cse0 |v_main_#t~malloc3.base_70| 1) |v_main_#t~malloc2.base_70| 0) |v_main_#t~malloc3.base_70| 0) |c_old(#valid)|) (not (= (select .cse0 |v_main_#t~malloc3.base_70|) 0))))) is different from false [2018-01-21 00:29:11,174 WARN L1007 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc3.base_70| Int) (|v_main_#t~malloc2.base_70| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc2.base_70| 1))) (or (not (= (select |c_#valid| |v_main_#t~malloc2.base_70|) 0)) (= |c_#valid| (store (store (store .cse0 |v_main_#t~malloc3.base_70| 1) |v_main_#t~malloc2.base_70| 0) |v_main_#t~malloc3.base_70| 0)) (not (= (select .cse0 |v_main_#t~malloc3.base_70|) 0))))) is different from false [2018-01-21 00:29:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:29:11,207 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:29:11,207 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2018-01-21 00:29:11,207 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:29:11,207 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 00:29:11,208 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 00:29:11,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=34, Unknown=4, NotChecked=52, Total=110 [2018-01-21 00:29:11,208 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 7 states. [2018-01-21 00:29:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:29:11,241 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-01-21 00:29:11,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 00:29:11,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-21 00:29:11,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:29:11,243 INFO L225 Difference]: With dead ends: 52 [2018-01-21 00:29:11,244 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:29:11,244 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=34, Unknown=4, NotChecked=52, Total=110 [2018-01-21 00:29:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:29:11,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:29:11,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:29:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:29:11,245 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-21 00:29:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:29:11,245 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:29:11,245 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 00:29:11,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:29:11,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:29:11,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:29:11 BoogieIcfgContainer [2018-01-21 00:29:11,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:29:11,250 INFO L168 Benchmark]: Toolchain (without parser) took 5468.47 ms. Allocated memory was 308.3 MB in the beginning and 490.7 MB in the end (delta: 182.5 MB). Free memory was 266.6 MB in the beginning and 356.9 MB in the end (delta: -90.3 MB). Peak memory consumption was 92.2 MB. Max. memory is 5.3 GB. [2018-01-21 00:29:11,251 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 308.3 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:29:11,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.15 ms. Allocated memory is still 308.3 MB. Free memory was 265.6 MB in the beginning and 255.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:29:11,252 INFO L168 Benchmark]: Boogie Preprocessor took 36.68 ms. Allocated memory is still 308.3 MB. Free memory was 255.6 MB in the beginning and 254.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-21 00:29:11,252 INFO L168 Benchmark]: RCFGBuilder took 252.86 ms. Allocated memory is still 308.3 MB. Free memory was 253.6 MB in the beginning and 237.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 5.3 GB. [2018-01-21 00:29:11,252 INFO L168 Benchmark]: TraceAbstraction took 4957.71 ms. Allocated memory was 308.3 MB in the beginning and 490.7 MB in the end (delta: 182.5 MB). Free memory was 237.9 MB in the beginning and 356.9 MB in the end (delta: -119.0 MB). Peak memory consumption was 63.4 MB. Max. memory is 5.3 GB. [2018-01-21 00:29:11,254 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 308.3 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 214.15 ms. Allocated memory is still 308.3 MB. Free memory was 265.6 MB in the beginning and 255.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.68 ms. Allocated memory is still 308.3 MB. Free memory was 255.6 MB in the beginning and 254.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 252.86 ms. Allocated memory is still 308.3 MB. Free memory was 253.6 MB in the beginning and 237.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4957.71 ms. Allocated memory was 308.3 MB in the beginning and 490.7 MB in the end (delta: 182.5 MB). Free memory was 237.9 MB in the beginning and 356.9 MB in the end (delta: -119.0 MB). Peak memory consumption was 63.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 337 LocStat_NO_SUPPORTING_DISEQUALITIES : 58 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.863716 RENAME_VARIABLES(MILLISECONDS) : 0.033256 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.534825 PROJECTAWAY(MILLISECONDS) : 2.096837 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002207 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.060587 ADD_EQUALITY(MILLISECONDS) : 0.037830 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.019852 #CONJOIN_DISJUNCTIVE : 63 #RENAME_VARIABLES : 110 #UNFREEZE : 0 #CONJOIN : 103 #PROJECTAWAY : 98 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 107 #ADD_EQUALITY : 44 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 357 LocStat_NO_SUPPORTING_DISEQUALITIES : 58 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 47 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.737812 RENAME_VARIABLES(MILLISECONDS) : 0.031678 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.450109 PROJECTAWAY(MILLISECONDS) : 1.453128 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002140 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.055936 ADD_EQUALITY(MILLISECONDS) : 0.034195 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.026686 #CONJOIN_DISJUNCTIVE : 63 #RENAME_VARIABLES : 110 #UNFREEZE : 0 #CONJOIN : 103 #PROJECTAWAY : 98 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 107 #ADD_EQUALITY : 45 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 359 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 47 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.789835 RENAME_VARIABLES(MILLISECONDS) : 0.030468 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.490903 PROJECTAWAY(MILLISECONDS) : 1.199797 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002516 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.056324 ADD_EQUALITY(MILLISECONDS) : 0.041575 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.041137 #CONJOIN_DISJUNCTIVE : 63 #RENAME_VARIABLES : 110 #UNFREEZE : 0 #CONJOIN : 103 #PROJECTAWAY : 98 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 107 #ADD_EQUALITY : 45 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 379 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 48 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.452154 RENAME_VARIABLES(MILLISECONDS) : 0.017201 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.280690 PROJECTAWAY(MILLISECONDS) : 1.089719 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002377 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.030474 ADD_EQUALITY(MILLISECONDS) : 0.032197 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008794 #CONJOIN_DISJUNCTIVE : 63 #RENAME_VARIABLES : 110 #UNFREEZE : 0 #CONJOIN : 103 #PROJECTAWAY : 98 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 107 #ADD_EQUALITY : 46 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 28 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 328 LocStat_NO_SUPPORTING_DISEQUALITIES : 58 LocStat_NO_DISJUNCTIONS : -56 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 44 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.366250 RENAME_VARIABLES(MILLISECONDS) : 0.150668 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.328739 PROJECTAWAY(MILLISECONDS) : 0.101753 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002521 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.175590 ADD_EQUALITY(MILLISECONDS) : 0.073543 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.085167 #CONJOIN_DISJUNCTIVE : 60 #RENAME_VARIABLES : 98 #UNFREEZE : 0 #CONJOIN : 92 #PROJECTAWAY : 83 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 95 #ADD_EQUALITY : 42 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 28 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 348 LocStat_NO_SUPPORTING_DISEQUALITIES : 58 LocStat_NO_DISJUNCTIONS : -56 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 45 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.250795 RENAME_VARIABLES(MILLISECONDS) : 0.104171 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.228386 PROJECTAWAY(MILLISECONDS) : 0.062287 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002776 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.121069 ADD_EQUALITY(MILLISECONDS) : 0.040019 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.009347 #CONJOIN_DISJUNCTIVE : 60 #RENAME_VARIABLES : 98 #UNFREEZE : 0 #CONJOIN : 92 #PROJECTAWAY : 83 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 95 #ADD_EQUALITY : 43 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 28 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 350 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -56 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 45 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.396794 RENAME_VARIABLES(MILLISECONDS) : 0.175583 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.355250 PROJECTAWAY(MILLISECONDS) : 0.123019 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002637 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.203582 ADD_EQUALITY(MILLISECONDS) : 0.044662 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.015423 #CONJOIN_DISJUNCTIVE : 60 #RENAME_VARIABLES : 98 #UNFREEZE : 0 #CONJOIN : 92 #PROJECTAWAY : 83 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 95 #ADD_EQUALITY : 43 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 28 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 370 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -56 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.228240 RENAME_VARIABLES(MILLISECONDS) : 0.097910 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.208768 PROJECTAWAY(MILLISECONDS) : 0.039807 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002156 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.113981 ADD_EQUALITY(MILLISECONDS) : 0.022638 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.009085 #CONJOIN_DISJUNCTIVE : 60 #RENAME_VARIABLES : 98 #UNFREEZE : 0 #CONJOIN : 92 #PROJECTAWAY : 83 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 95 #ADD_EQUALITY : 44 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 3 procedures, 42 locations, 3 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L541] int i, j; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L543] length = 1 VAL [length=1] [L544] int fac = __VERIFIER_nondet_int(); [L545] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L545] fac = 1 VAL [fac=1, length=1] [L546] EXPR, FCALL __builtin_alloca (length) VAL [__builtin_alloca (length)={6:0}, fac=1, length=1] [L546] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={6:0}, arr={6:0}, fac=1, length=1] [L547] EXPR, FCALL __builtin_alloca (fac*length) VAL [__builtin_alloca (fac*length)={8:0}, __builtin_alloca (length)={6:0}, arr={6:0}, fac=1, length=1] [L547] int *arr2 = __builtin_alloca (fac*length); VAL [__builtin_alloca (fac*length)={8:0}, __builtin_alloca (length)={6:0}, arr={6:0}, arr2={8:0}, fac=1, length=1] [L548] COND FALSE !(!arr || !arr2) [L549] i=0 VAL [__builtin_alloca (fac*length)={8:0}, __builtin_alloca (length)={6:0}, arr={6:0}, arr2={8:0}, fac=1, i=0, length=1] [L549] COND TRUE i