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_smtcomp.epf -i ../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:07:03,635 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:07:03,638 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:07:03,654 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:07:03,654 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:07:03,655 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:07:03,657 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:07:03,658 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:07:03,661 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:07:03,662 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:07:03,663 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:07:03,663 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:07:03,664 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:07:03,665 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:07:03,666 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:07:03,669 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:07:03,671 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:07:03,673 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:07:03,675 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:07:03,676 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:07:03,679 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-21 10:07:03,679 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-21 10:07:03,679 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-21 10:07:03,680 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-21 10:07:03,681 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-21 10:07:03,683 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-21 10:07:03,683 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-21 10:07:03,684 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-21 10:07:03,684 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-21 10:07:03,684 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 10:07:03,685 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 10:07:03,685 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_smtcomp.epf [2018-01-21 10:07:03,695 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:07:03,696 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:07:03,697 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:07:03,697 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:07:03,697 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:07:03,697 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:07:03,698 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:07:03,698 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:07:03,698 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:07:03,699 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:07:03,699 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:07:03,699 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:07:03,699 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:07:03,699 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:07:03,700 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:07:03,700 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:07:03,700 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:07:03,700 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:07:03,700 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:07:03,701 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:07:03,701 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:07:03,701 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:07:03,701 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:07:03,701 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:07:03,701 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:07:03,702 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:07:03,702 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:07:03,702 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:07:03,702 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:07:03,702 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:07:03,703 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:07:03,703 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:07:03,703 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:07:03,703 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:07:03,703 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:07:03,704 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:07:03,704 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:07:03,705 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:07:03,705 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:07:03,742 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:07:03,755 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:07:03,759 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:07:03,761 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:07:03,761 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:07:03,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-01-21 10:07:03,921 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:07:03,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:07:03,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:07:03,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:07:03,932 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:07:03,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:07:03" (1/1) ... [2018-01-21 10:07:03,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11af259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:03, skipping insertion in model container [2018-01-21 10:07:03,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:07:03" (1/1) ... [2018-01-21 10:07:03,951 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:07:03,988 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:07:04,101 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:07:04,116 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:07:04,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:04 WrapperNode [2018-01-21 10:07:04,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:07:04,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:07:04,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:07:04,124 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:07:04,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:04" (1/1) ... [2018-01-21 10:07:04,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:04" (1/1) ... [2018-01-21 10:07:04,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:04" (1/1) ... [2018-01-21 10:07:04,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:04" (1/1) ... [2018-01-21 10:07:04,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:04" (1/1) ... [2018-01-21 10:07:04,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:04" (1/1) ... [2018-01-21 10:07:04,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:04" (1/1) ... [2018-01-21 10:07:04,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:07:04,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:07:04,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:07:04,155 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:07:04,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:04" (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 10:07:04,212 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:07:04,213 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:07:04,213 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:07:04,213 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 10:07:04,213 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 10:07:04,213 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:07:04,213 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:07:04,213 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:07:04,213 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:07:04,213 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:07:04,214 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:07:04,214 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:07:04,416 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:07:04,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:07:04 BoogieIcfgContainer [2018-01-21 10:07:04,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:07:04,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:07:04,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:07:04,419 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:07:04,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:07:03" (1/3) ... [2018-01-21 10:07:04,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197a849e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:07:04, skipping insertion in model container [2018-01-21 10:07:04,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:07:04" (2/3) ... [2018-01-21 10:07:04,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197a849e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:07:04, skipping insertion in model container [2018-01-21 10:07:04,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:07:04" (3/3) ... [2018-01-21 10:07:04,422 INFO L105 eAbstractionObserver]: Analyzing ICFG mult_array-alloca_true-valid-memsafety_true-termination.i [2018-01-21 10:07:04,428 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:07:04,435 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 10:07:04,475 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:07:04,475 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:07:04,475 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:07:04,475 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:07:04,475 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:07:04,475 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:07:04,475 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:07:04,475 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:07:04,476 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:07:04,493 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 10:07:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:07:04,498 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:04,499 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:07:04,499 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:07:04,503 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-21 10:07:04,505 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:04,548 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:04,549 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:04,549 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:04,549 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:07:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:07:04,607 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:07:04,614 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:07:04,621 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:07:04,621 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:07:04,621 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:07:04,621 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:07:04,622 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:07:04,622 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:07:04,622 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:07:04,622 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:07:04,622 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:07:04,624 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 10:07:04,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 10:07:04,626 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:04,626 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 10:07:04,626 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:07:04,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1756096489, now seen corresponding path program 1 times [2018-01-21 10:07:04,627 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:04,628 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:04,628 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:04,629 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:04,629 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:04,648 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:04,648 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:04,649 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 10:07:04,658 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:04,658 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:04,703 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 10:07:04,705 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 10:07:04,706 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:07:04,706 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 10:07:04,714 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:04,714 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:07:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:04,756 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:07:04,869 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 10:07:04,869 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 10:07:04,973 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 10:07:05,008 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:05,009 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-01-21 10:07:05,009 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:05,011 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:07:05,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:07:05,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:07:05,029 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-21 10:07:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:05,133 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-21 10:07:05,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 10:07:05,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-21 10:07:05,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:05,146 INFO L225 Difference]: With dead ends: 60 [2018-01-21 10:07:05,146 INFO L226 Difference]: Without dead ends: 35 [2018-01-21 10:07:05,150 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 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 10:07:05,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-21 10:07:05,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-21 10:07:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-21 10:07:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-21 10:07:05,190 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2018-01-21 10:07:05,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:05,191 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-21 10:07:05,191 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:07:05,191 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-21 10:07:05,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 10:07:05,192 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:05,192 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 10:07:05,193 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:07:05,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1252120768, now seen corresponding path program 1 times [2018-01-21 10:07:05,193 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:05,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:05,194 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:05,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:05,194 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:05,204 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:05,204 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:05,204 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 10:07:05,212 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:05,212 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:05,253 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 10:07:05,253 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 10:07:05,254 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:07:05,254 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 10:07:05,259 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:05,259 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:07:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:05,289 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:07:05,306 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 10:07:05,306 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 10:07:05,380 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 10:07:05,403 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:05,404 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-01-21 10:07:05,404 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:05,404 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 10:07:05,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 10:07:05,405 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 10:07:05,405 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2018-01-21 10:07:05,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:05,446 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2018-01-21 10:07:05,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 10:07:05,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-21 10:07:05,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:05,448 INFO L225 Difference]: With dead ends: 56 [2018-01-21 10:07:05,449 INFO L226 Difference]: Without dead ends: 40 [2018-01-21 10:07:05,450 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 10:07:05,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-21 10:07:05,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-01-21 10:07:05,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-21 10:07:05,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-21 10:07:05,456 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 27 [2018-01-21 10:07:05,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:05,457 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-21 10:07:05,457 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 10:07:05,457 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-21 10:07:05,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 10:07:05,458 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:05,459 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 10:07:05,459 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:07:05,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1880809997, now seen corresponding path program 1 times [2018-01-21 10:07:05,459 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:05,460 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:05,460 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:05,461 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:05,461 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:05,470 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:05,470 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:05,470 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) [2018-01-21 10:07:05,481 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:05,482 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 10:07:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:05,535 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 10:07:05,537 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 10:07:05,583 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:07:05,584 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 10:07:07,769 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 10:07:07,771 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 10:07:07,784 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 10:07:07,784 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:07:07,784 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 10:07:07,796 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:07,797 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:07:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:07,819 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:07:07,849 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 10:07:07,849 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 10:07:07,928 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 10:07:07,962 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:07,963 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-21 10:07:07,963 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:07,964 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 10:07:07,964 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 10:07:07,964 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 10:07:07,964 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-01-21 10:07:08,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:08,077 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2018-01-21 10:07:08,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 10:07:08,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 10:07:08,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:08,083 INFO L225 Difference]: With dead ends: 102 [2018-01-21 10:07:08,083 INFO L226 Difference]: Without dead ends: 93 [2018-01-21 10:07:08,083 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 10:07:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-21 10:07:08,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2018-01-21 10:07:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 10:07:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-21 10:07:08,094 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-21 10:07:08,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:08,094 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-21 10:07:08,094 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 10:07:08,094 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-21 10:07:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 10:07:08,096 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:08,096 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 10:07:08,096 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:07:08,097 INFO L82 PathProgramCache]: Analyzing trace with hash -2014823503, now seen corresponding path program 1 times [2018-01-21 10:07:08,097 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:08,098 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:08,098 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:08,098 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:08,098 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:08,108 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:08,108 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:08,108 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 10:07:08,124 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:08,124 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:08,172 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 10:07:08,172 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 10:07:08,174 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:07:08,174 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 10:07:09,403 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 10:07:09,403 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 10:07:09,407 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 10:07:09,407 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:07:09,407 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 10:07:09,427 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:09,428 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:07:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:09,456 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:07:09,567 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 10:07:09,567 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 10:07:09,698 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 10:07:09,719 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:09,720 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-21 10:07:09,720 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:09,720 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 10:07:09,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 10:07:09,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 10:07:09,721 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-21 10:07:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:09,793 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-01-21 10:07:09,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 10:07:09,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 10:07:09,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:09,795 INFO L225 Difference]: With dead ends: 95 [2018-01-21 10:07:09,796 INFO L226 Difference]: Without dead ends: 86 [2018-01-21 10:07:09,796 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 10:07:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-21 10:07:09,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2018-01-21 10:07:09,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 10:07:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-21 10:07:09,805 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-21 10:07:09,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:09,805 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-21 10:07:09,806 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 10:07:09,806 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-21 10:07:09,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 10:07:09,807 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:09,807 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 10:07:09,807 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:07:09,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1818770383, now seen corresponding path program 1 times [2018-01-21 10:07:09,808 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:09,809 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:09,809 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:09,809 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:09,809 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:09,817 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:09,817 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:09,817 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 10:07:09,827 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:09,828 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:09,872 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 10:07:09,872 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 10:07:09,874 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:07:09,874 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 10:07:10,910 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 10:07:10,910 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 10:07:10,957 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 10:07:10,957 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:07:10,957 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 10:07:10,967 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:10,968 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:07:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:10,986 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:07:11,011 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 10:07:11,011 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 10:07:11,062 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 10:07:11,097 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:11,097 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-01-21 10:07:11,098 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:11,098 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 10:07:11,098 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 10:07:11,098 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 10:07:11,099 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-21 10:07:11,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:11,204 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-01-21 10:07:11,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 10:07:11,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 10:07:11,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:11,207 INFO L225 Difference]: With dead ends: 110 [2018-01-21 10:07:11,207 INFO L226 Difference]: Without dead ends: 101 [2018-01-21 10:07:11,208 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 10:07:11,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-21 10:07:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 54. [2018-01-21 10:07:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 10:07:11,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-21 10:07:11,216 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-21 10:07:11,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:11,216 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-21 10:07:11,216 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 10:07:11,216 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-21 10:07:11,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 10:07:11,217 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:11,218 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 10:07:11,218 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:07:11,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1952783889, now seen corresponding path program 1 times [2018-01-21 10:07:11,218 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:11,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:11,219 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:11,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:11,219 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:11,226 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:11,226 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:11,226 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 10:07:11,241 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:11,241 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:11,288 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 10:07:11,288 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 10:07:11,289 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:07:11,289 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 10:07:12,351 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 10:07:12,351 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 10:07:12,355 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 10:07:12,355 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:07:12,355 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 10:07:12,362 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:12,362 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:07:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:12,378 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:07:12,394 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 10:07:12,394 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 10:07:12,435 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 10:07:12,455 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:12,455 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-01-21 10:07:12,455 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:12,455 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 10:07:12,456 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 10:07:12,456 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 10:07:12,456 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-21 10:07:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:12,514 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2018-01-21 10:07:12,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 10:07:12,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 10:07:12,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:12,515 INFO L225 Difference]: With dead ends: 69 [2018-01-21 10:07:12,515 INFO L226 Difference]: Without dead ends: 60 [2018-01-21 10:07:12,516 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 10:07:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-21 10:07:12,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2018-01-21 10:07:12,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-21 10:07:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-01-21 10:07:12,522 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2018-01-21 10:07:12,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:12,523 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-01-21 10:07:12,523 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 10:07:12,523 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-01-21 10:07:12,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-21 10:07:12,524 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:12,524 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 10:07:12,524 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:07:12,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1166525403, now seen corresponding path program 1 times [2018-01-21 10:07:12,525 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:12,525 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:12,526 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:12,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:12,526 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:12,533 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:12,533 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:12,533 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 10:07:12,545 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:12,545 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:07:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:07:12,630 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:07:12,640 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:07:12,647 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:07:12,647 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:07:12,662 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:07:12,662 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:07:12,662 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:07:12,663 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:07:12,663 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:07:12,663 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:07:12,663 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:07:12,663 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:07:12,663 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:07:12,664 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 10:07:12,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 10:07:12,665 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:12,665 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 10:07:12,665 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 10:07:12,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2112136767, now seen corresponding path program 1 times [2018-01-21 10:07:12,666 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:12,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:12,667 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:12,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:12,667 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:12,672 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:12,672 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:12,673 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 10:07:12,681 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:12,681 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:12,722 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 10:07:12,723 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 10:07:12,723 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:07:12,723 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 10:07:12,734 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:12,734 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:07:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:12,747 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:07:12,789 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 10:07:12,790 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 10:07:12,834 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 10:07:12,855 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:12,855 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-01-21 10:07:12,855 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:12,856 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:07:12,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:07:12,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:07:12,856 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-21 10:07:12,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:12,903 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-21 10:07:12,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 10:07:12,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-21 10:07:12,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:12,904 INFO L225 Difference]: With dead ends: 60 [2018-01-21 10:07:12,905 INFO L226 Difference]: Without dead ends: 33 [2018-01-21 10:07:12,905 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-01-21 10:07:12,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-21 10:07:12,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-21 10:07:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-21 10:07:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-01-21 10:07:12,909 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-01-21 10:07:12,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:12,909 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-01-21 10:07:12,909 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:07:12,909 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-01-21 10:07:12,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 10:07:12,910 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:12,910 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 10:07:12,910 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 10:07:12,910 INFO L82 PathProgramCache]: Analyzing trace with hash 197950760, now seen corresponding path program 1 times [2018-01-21 10:07:12,911 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:12,911 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:12,911 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:12,912 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:12,912 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:12,917 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:12,917 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:12,918 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 10:07:12,925 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:12,925 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:12,952 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 10:07:12,952 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 10:07:12,952 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:07:12,953 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 10:07:12,962 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:12,962 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:07:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:12,975 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:07:13,013 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 10:07:13,014 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 10:07:13,022 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 10:07:13,042 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:13,042 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-01-21 10:07:13,042 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:13,043 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 10:07:13,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 10:07:13,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 10:07:13,043 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2018-01-21 10:07:13,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:13,064 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2018-01-21 10:07:13,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 10:07:13,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-21 10:07:13,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:13,064 INFO L225 Difference]: With dead ends: 52 [2018-01-21 10:07:13,065 INFO L226 Difference]: Without dead ends: 38 [2018-01-21 10:07:13,065 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 10:07:13,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-21 10:07:13,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-01-21 10:07:13,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-21 10:07:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-21 10:07:13,069 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 25 [2018-01-21 10:07:13,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:13,069 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-21 10:07:13,069 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 10:07:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-21 10:07:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 10:07:13,070 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:13,070 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 10:07:13,070 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 10:07:13,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1753910501, now seen corresponding path program 1 times [2018-01-21 10:07:13,071 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:13,072 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:13,072 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:13,072 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:13,072 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:13,078 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:13,078 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:13,078 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 10:07:13,084 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:13,084 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:13,110 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 10:07:13,110 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 10:07:13,111 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:07:13,111 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 10:07:13,788 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 10:07:13,788 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 14 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 10:07:13,791 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 10:07:14,878 INFO L232 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 64.25% of their original sizes. [2018-01-21 10:07:14,878 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 10:07:15,222 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 10:07:15,223 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:15,223 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-01-21 10:07:15,223 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:15,223 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-21 10:07:15,223 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-21 10:07:15,224 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-01-21 10:07:15,224 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 17 states. [2018-01-21 10:07:22,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:22,430 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-01-21 10:07:22,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-21 10:07:22,431 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2018-01-21 10:07:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:22,431 INFO L225 Difference]: With dead ends: 63 [2018-01-21 10:07:22,431 INFO L226 Difference]: Without dead ends: 56 [2018-01-21 10:07:22,432 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-01-21 10:07:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-21 10:07:22,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2018-01-21 10:07:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-21 10:07:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-21 10:07:22,438 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-21 10:07:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:22,438 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-21 10:07:22,438 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-21 10:07:22,438 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-21 10:07:22,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 10:07:22,439 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:22,440 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 10:07:22,440 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-21 10:07:22,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1535055783, now seen corresponding path program 1 times [2018-01-21 10:07:22,440 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:22,441 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:22,441 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:22,441 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:22,441 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:22,447 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:22,448 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:22,448 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 10:07:22,457 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:22,457 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:22,488 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 10:07:22,488 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 10:07:22,489 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:07:22,489 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 10:07:23,210 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 10:07:23,211 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 14 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 10:07:23,216 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 10:07:24,589 INFO L232 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 64.25% of their original sizes. [2018-01-21 10:07:24,589 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 10:07:24,905 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 10:07:24,905 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:24,905 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-01-21 10:07:24,905 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:24,905 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-21 10:07:24,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-21 10:07:24,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-01-21 10:07:24,906 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 17 states. [2018-01-21 10:07:32,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:32,441 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-01-21 10:07:32,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-21 10:07:32,441 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2018-01-21 10:07:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:32,442 INFO L225 Difference]: With dead ends: 77 [2018-01-21 10:07:32,442 INFO L226 Difference]: Without dead ends: 70 [2018-01-21 10:07:32,442 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-01-21 10:07:32,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-01-21 10:07:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2018-01-21 10:07:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-21 10:07:32,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-21 10:07:32,449 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-21 10:07:32,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:32,449 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-21 10:07:32,449 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-21 10:07:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-21 10:07:32,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 10:07:32,449 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:32,450 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 10:07:32,450 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-21 10:07:32,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1887924007, now seen corresponding path program 1 times [2018-01-21 10:07:32,450 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:32,450 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:32,451 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:32,451 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:32,451 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:32,456 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:32,457 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:32,457 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 10:07:32,467 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:32,467 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:32,493 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 10:07:32,493 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 10:07:32,494 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:07:32,494 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 10:07:33,268 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 10:07:33,268 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 14 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 10:07:33,288 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 10:07:34,379 INFO L232 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 64.25% of their original sizes. [2018-01-21 10:07:34,379 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 10:07:34,694 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 10:07:34,694 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:34,694 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-01-21 10:07:34,694 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:34,695 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-21 10:07:34,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-21 10:07:34,695 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-01-21 10:07:34,695 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 17 states. [2018-01-21 10:07:42,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:07:42,307 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2018-01-21 10:07:42,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-21 10:07:42,323 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2018-01-21 10:07:42,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:07:42,324 INFO L225 Difference]: With dead ends: 92 [2018-01-21 10:07:42,325 INFO L226 Difference]: Without dead ends: 85 [2018-01-21 10:07:42,325 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-01-21 10:07:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-01-21 10:07:42,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2018-01-21 10:07:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-21 10:07:42,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-21 10:07:42,334 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-21 10:07:42,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:07:42,334 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-21 10:07:42,334 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-21 10:07:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-21 10:07:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 10:07:42,335 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:07:42,335 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 10:07:42,335 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation]=== [2018-01-21 10:07:42,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1669069289, now seen corresponding path program 1 times [2018-01-21 10:07:42,336 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:07:42,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:42,337 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:42,337 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:07:42,337 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:07:42,341 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 10:07:42,341 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 10:07:42,341 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 10:07:42,348 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:07:42,348 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 10:07:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:07:42,375 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 10:07:42,375 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 10:07:42,376 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:07:42,376 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 10:07:43,068 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 10:07:43,068 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 14 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 10:07:43,070 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 10:07:44,161 INFO L232 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 64.25% of their original sizes. [2018-01-21 10:07:44,162 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 10:07:44,536 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 10:07:44,536 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:07:44,537 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-01-21 10:07:44,537 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:07:44,537 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-21 10:07:44,537 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-21 10:07:44,537 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-01-21 10:07:44,537 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 17 states. Received shutdown request... [2018-01-21 10:08:03,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-21 10:08:03,379 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:08:03,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:08:03 BoogieIcfgContainer [2018-01-21 10:08:03,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:08:03,420 INFO L168 Benchmark]: Toolchain (without parser) took 59497.51 ms. Allocated memory was 303.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 261.4 MB in the beginning and 1.2 GB in the end (delta: -902.0 MB). Peak memory consumption was 181.7 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:03,420 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 303.0 MB. Free memory is still 267.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:08:03,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.63 ms. Allocated memory is still 303.0 MB. Free memory was 260.4 MB in the beginning and 250.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:03,421 INFO L168 Benchmark]: Boogie Preprocessor took 30.51 ms. Allocated memory is still 303.0 MB. Free memory was 250.4 MB in the beginning and 248.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:03,422 INFO L168 Benchmark]: RCFGBuilder took 261.91 ms. Allocated memory is still 303.0 MB. Free memory was 248.4 MB in the beginning and 232.8 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:03,422 INFO L168 Benchmark]: TraceAbstraction took 59001.39 ms. Allocated memory was 303.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 232.8 MB in the beginning and 1.2 GB in the end (delta: -930.6 MB). Peak memory consumption was 153.1 MB. Max. memory is 5.3 GB. [2018-01-21 10:08:03,424 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 303.0 MB. Free memory is still 267.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 196.63 ms. Allocated memory is still 303.0 MB. Free memory was 260.4 MB in the beginning and 250.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.51 ms. Allocated memory is still 303.0 MB. Free memory was 250.4 MB in the beginning and 248.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 261.91 ms. Allocated memory is still 303.0 MB. Free memory was 248.4 MB in the beginning and 232.8 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 59001.39 ms. Allocated memory was 303.0 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 232.8 MB in the beginning and 1.2 GB in the end (delta: -930.6 MB). Peak memory consumption was 153.1 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 : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 403 LocStat_NO_SUPPORTING_DISEQUALITIES : 70 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 6.958006 RENAME_VARIABLES(MILLISECONDS) : 0.036203 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 6.638897 PROJECTAWAY(MILLISECONDS) : 49.439621 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.125736 DISJOIN(MILLISECONDS) : 2.940490 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.064333 ADD_EQUALITY(MILLISECONDS) : 0.036429 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.018541 #CONJOIN_DISJUNCTIVE : 77 #RENAME_VARIABLES : 141 #UNFREEZE : 0 #CONJOIN : 121 #PROJECTAWAY : 116 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 13 #RENAME_VARIABLES_DISJUNCTIVE : 138 #ADD_EQUALITY : 44 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 423 LocStat_NO_SUPPORTING_DISEQUALITIES : 70 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 47 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 3.110008 RENAME_VARIABLES(MILLISECONDS) : 0.014470 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 2.880501 PROJECTAWAY(MILLISECONDS) : 28.853865 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.094700 DISJOIN(MILLISECONDS) : 1.767391 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.028963 ADD_EQUALITY(MILLISECONDS) : 0.039406 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.038903 #CONJOIN_DISJUNCTIVE : 77 #RENAME_VARIABLES : 141 #UNFREEZE : 0 #CONJOIN : 121 #PROJECTAWAY : 116 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 13 #RENAME_VARIABLES_DISJUNCTIVE : 138 #ADD_EQUALITY : 45 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 425 LocStat_NO_SUPPORTING_DISEQUALITIES : 70 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 47 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 3.238396 RENAME_VARIABLES(MILLISECONDS) : 0.018878 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 3.056755 PROJECTAWAY(MILLISECONDS) : 18.831848 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.095352 DISJOIN(MILLISECONDS) : 1.809995 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.035932 ADD_EQUALITY(MILLISECONDS) : 0.050825 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.013024 #CONJOIN_DISJUNCTIVE : 77 #RENAME_VARIABLES : 141 #UNFREEZE : 0 #CONJOIN : 121 #PROJECTAWAY : 116 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 13 #RENAME_VARIABLES_DISJUNCTIVE : 138 #ADD_EQUALITY : 45 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 445 LocStat_NO_SUPPORTING_DISEQUALITIES : 70 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 48 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 2.913836 RENAME_VARIABLES(MILLISECONDS) : 0.015601 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 2.723213 PROJECTAWAY(MILLISECONDS) : 16.832731 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.058425 DISJOIN(MILLISECONDS) : 1.701954 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.032986 ADD_EQUALITY(MILLISECONDS) : 0.026905 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.013689 #CONJOIN_DISJUNCTIVE : 77 #RENAME_VARIABLES : 141 #UNFREEZE : 0 #CONJOIN : 121 #PROJECTAWAY : 116 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 13 #RENAME_VARIABLES_DISJUNCTIVE : 138 #ADD_EQUALITY : 46 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 27 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 364 LocStat_NO_SUPPORTING_DISEQUALITIES : 66 LocStat_NO_DISJUNCTIONS : -54 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 44 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.400212 RENAME_VARIABLES(MILLISECONDS) : 1.301018 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.367881 PROJECTAWAY(MILLISECONDS) : 5.659859 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.049932 DISJOIN(MILLISECONDS) : 1.662974 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 1.327204 ADD_EQUALITY(MILLISECONDS) : 0.092628 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.061451 #CONJOIN_DISJUNCTIVE : 73 #RENAME_VARIABLES : 124 #UNFREEZE : 0 #CONJOIN : 105 #PROJECTAWAY : 93 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 12 #RENAME_VARIABLES_DISJUNCTIVE : 121 #ADD_EQUALITY : 42 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 27 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 383 LocStat_NO_SUPPORTING_DISEQUALITIES : 66 LocStat_NO_DISJUNCTIONS : -54 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 45 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.383371 RENAME_VARIABLES(MILLISECONDS) : 1.311298 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.363073 PROJECTAWAY(MILLISECONDS) : 5.778653 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.054386 DISJOIN(MILLISECONDS) : 1.582367 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 1.333976 ADD_EQUALITY(MILLISECONDS) : 0.030445 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.007840 #CONJOIN_DISJUNCTIVE : 73 #RENAME_VARIABLES : 124 #UNFREEZE : 0 #CONJOIN : 105 #PROJECTAWAY : 93 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 12 #RENAME_VARIABLES_DISJUNCTIVE : 121 #ADD_EQUALITY : 43 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 27 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 399 LocStat_NO_SUPPORTING_DISEQUALITIES : 66 LocStat_NO_DISJUNCTIONS : -54 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 45 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.332860 RENAME_VARIABLES(MILLISECONDS) : 1.207041 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.308120 PROJECTAWAY(MILLISECONDS) : 5.474433 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.073691 DISJOIN(MILLISECONDS) : 1.578419 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 1.232903 ADD_EQUALITY(MILLISECONDS) : 0.027897 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.010239 #CONJOIN_DISJUNCTIVE : 73 #RENAME_VARIABLES : 124 #UNFREEZE : 0 #CONJOIN : 105 #PROJECTAWAY : 93 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 12 #RENAME_VARIABLES_DISJUNCTIVE : 121 #ADD_EQUALITY : 43 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 27 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 404 LocStat_NO_SUPPORTING_DISEQUALITIES : 66 LocStat_NO_DISJUNCTIONS : -54 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.387531 RENAME_VARIABLES(MILLISECONDS) : 1.356017 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.361045 PROJECTAWAY(MILLISECONDS) : 5.866357 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.068114 DISJOIN(MILLISECONDS) : 1.599483 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 1.381538 ADD_EQUALITY(MILLISECONDS) : 0.030314 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.010325 #CONJOIN_DISJUNCTIVE : 73 #RENAME_VARIABLES : 124 #UNFREEZE : 0 #CONJOIN : 105 #PROJECTAWAY : 93 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 12 #RENAME_VARIABLES_DISJUNCTIVE : 121 #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*sizeof(int)) VAL [__builtin_alloca (length*sizeof(int))={7:0}, fac=1, length=1] [L546] int *arr = __builtin_alloca (length*sizeof(int)); VAL [__builtin_alloca (length*sizeof(int))={7:0}, arr={7:0}, fac=1, length=1] [L547] EXPR, FCALL __builtin_alloca (fac*length*sizeof(int)) VAL [__builtin_alloca (fac*length*sizeof(int))={9:0}, __builtin_alloca (length*sizeof(int))={7:0}, arr={7:0}, fac=1, length=1] [L547] int *arr2 = __builtin_alloca (fac*length*sizeof(int)); VAL [__builtin_alloca (fac*length*sizeof(int))={9:0}, __builtin_alloca (length*sizeof(int))={7:0}, arr={7:0}, arr2={9:0}, fac=1, length=1] [L548] COND FALSE !(!arr || !arr2) [L549] i=0 VAL [__builtin_alloca (fac*length*sizeof(int))={9:0}, __builtin_alloca (length*sizeof(int))={7:0}, arr={7:0}, arr2={9:0}, fac=1, i=0, length=1] [L549] COND TRUE i