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_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/reducercommutativity/max_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d63d1fb [2018-01-27 23:04:56,415 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-27 23:04:56,417 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-27 23:04:56,436 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-27 23:04:56,437 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-27 23:04:56,438 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-27 23:04:56,439 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-27 23:04:56,440 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-27 23:04:56,443 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-27 23:04:56,444 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-27 23:04:56,444 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-27 23:04:56,445 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-27 23:04:56,448 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-27 23:04:56,449 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-27 23:04:56,450 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-27 23:04:56,454 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-27 23:04:56,456 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-27 23:04:56,458 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-27 23:04:56,459 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-27 23:04:56,460 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-27 23:04:56,463 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-27 23:04:56,463 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-27 23:04:56,463 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-27 23:04:56,464 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-27 23:04:56,465 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-27 23:04:56,466 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-27 23:04:56,467 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-27 23:04:56,467 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-27 23:04:56,468 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-27 23:04:56,468 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-27 23:04:56,469 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-27 23:04:56,469 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-27 23:04:56,480 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-27 23:04:56,480 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-27 23:04:56,481 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-27 23:04:56,481 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-27 23:04:56,481 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-27 23:04:56,482 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-27 23:04:56,482 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-27 23:04:56,482 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-27 23:04:56,483 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-27 23:04:56,483 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-27 23:04:56,483 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-27 23:04:56,483 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-27 23:04:56,483 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-27 23:04:56,484 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-27 23:04:56,484 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-27 23:04:56,484 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-27 23:04:56,484 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-27 23:04:56,484 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-27 23:04:56,485 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-27 23:04:56,485 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-27 23:04:56,485 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-27 23:04:56,485 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-27 23:04:56,485 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-27 23:04:56,486 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-27 23:04:56,486 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-27 23:04:56,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-27 23:04:56,486 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-27 23:04:56,486 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-27 23:04:56,487 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-27 23:04:56,487 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-27 23:04:56,487 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-27 23:04:56,487 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-27 23:04:56,487 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-27 23:04:56,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-27 23:04:56,488 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-27 23:04:56,489 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-27 23:04:56,489 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-27 23:04:56,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-27 23:04:56,539 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-27 23:04:56,543 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-27 23:04:56,545 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-27 23:04:56,545 INFO L276 PluginConnector]: CDTParser initialized [2018-01-27 23:04:56,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max_true-unreach-call_true-termination.i [2018-01-27 23:04:56,666 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-27 23:04:56,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-27 23:04:56,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-27 23:04:56,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-27 23:04:56,689 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-27 23:04:56,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:04:56" (1/1) ... [2018-01-27 23:04:56,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae34e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:56, skipping insertion in model container [2018-01-27 23:04:56,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:04:56" (1/1) ... [2018-01-27 23:04:56,715 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-27 23:04:56,737 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-27 23:04:56,910 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-27 23:04:56,938 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-27 23:04:56,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:56 WrapperNode [2018-01-27 23:04:56,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-27 23:04:56,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-27 23:04:56,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-27 23:04:56,950 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-27 23:04:56,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:56" (1/1) ... [2018-01-27 23:04:56,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:56" (1/1) ... [2018-01-27 23:04:56,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:56" (1/1) ... [2018-01-27 23:04:56,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:56" (1/1) ... [2018-01-27 23:04:56,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:56" (1/1) ... [2018-01-27 23:04:56,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:56" (1/1) ... [2018-01-27 23:04:56,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:56" (1/1) ... [2018-01-27 23:04:57,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-27 23:04:57,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-27 23:04:57,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-27 23:04:57,007 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-27 23:04:57,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:56" (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 [2018-01-27 23:04:57,085 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-27 23:04:57,086 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-27 23:04:57,086 INFO L136 BoogieDeclarations]: Found implementation of procedure max [2018-01-27 23:04:57,088 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-27 23:04:57,089 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-27 23:04:57,089 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-27 23:04:57,089 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-27 23:04:57,089 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-27 23:04:57,089 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-27 23:04:57,089 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-27 23:04:57,089 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-27 23:04:57,090 INFO L128 BoogieDeclarations]: Found specification of procedure max [2018-01-27 23:04:57,090 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-27 23:04:57,090 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-27 23:04:57,090 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-27 23:04:57,546 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-27 23:04:57,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:04:57 BoogieIcfgContainer [2018-01-27 23:04:57,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-27 23:04:57,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-27 23:04:57,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-27 23:04:57,551 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-27 23:04:57,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:04:56" (1/3) ... [2018-01-27 23:04:57,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690fe1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:04:57, skipping insertion in model container [2018-01-27 23:04:57,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:04:56" (2/3) ... [2018-01-27 23:04:57,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690fe1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:04:57, skipping insertion in model container [2018-01-27 23:04:57,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:04:57" (3/3) ... [2018-01-27 23:04:57,554 INFO L105 eAbstractionObserver]: Analyzing ICFG max_true-unreach-call_true-termination.i [2018-01-27 23:04:57,561 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-27 23:04:57,568 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-27 23:04:57,617 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 23:04:57,618 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 23:04:57,618 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 23:04:57,618 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 23:04:57,618 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 23:04:57,618 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 23:04:57,619 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 23:04:57,619 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-27 23:04:57,620 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 23:04:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-01-27 23:04:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-27 23:04:57,648 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:04:57,649 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-27 23:04:57,649 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-27 23:04:57,654 INFO L82 PathProgramCache]: Analyzing trace with hash 113400, now seen corresponding path program 1 times [2018-01-27 23:04:57,657 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:04:57,658 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:04:57,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:57,715 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:04:57,715 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-27 23:04:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-27 23:04:57,774 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-27 23:04:57,782 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 23:04:57,790 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 23:04:57,790 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 23:04:57,790 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 23:04:57,790 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 23:04:57,790 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 23:04:57,790 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 23:04:57,790 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 23:04:57,791 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == maxErr0EnsuresViolation======== [2018-01-27 23:04:57,791 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 23:04:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-01-27 23:04:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-27 23:04:57,794 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:04:57,794 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 23:04:57,794 INFO L371 AbstractCegarLoop]: === Iteration 1 === [maxErr0EnsuresViolation]=== [2018-01-27 23:04:57,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1228090840, now seen corresponding path program 1 times [2018-01-27 23:04:57,794 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:04:57,794 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:04:57,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:57,795 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:04:57,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:04:57,827 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:04:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-27 23:04:57,875 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 23:04:57,875 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-27 23:04:57,876 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-27 23:04:57,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-27 23:04:57,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 23:04:57,891 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-01-27 23:04:57,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:04:57,911 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2018-01-27 23:04:57,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-27 23:04:57,913 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-01-27 23:04:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:04:57,922 INFO L225 Difference]: With dead ends: 96 [2018-01-27 23:04:57,922 INFO L226 Difference]: Without dead ends: 0 [2018-01-27 23:04:58,025 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 23:04:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-27 23:04:58,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-27 23:04:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-27 23:04:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-27 23:04:58,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-01-27 23:04:58,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:04:58,053 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-27 23:04:58,053 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-27 23:04:58,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-27 23:04:58,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-27 23:04:58,059 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 23:04:58,060 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 23:04:58,060 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 23:04:58,063 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 23:04:58,063 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 23:04:58,063 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 23:04:58,063 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 23:04:58,064 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-27 23:04:58,064 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 23:04:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-01-27 23:04:58,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-27 23:04:58,066 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:04:58,067 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 23:04:58,067 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 23:04:58,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1887078256, now seen corresponding path program 1 times [2018-01-27 23:04:58,068 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:04:58,068 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:04:58,069 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:58,069 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:04:58,070 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-27 23:04:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-27 23:04:58,111 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-27 23:04:58,113 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 23:04:58,113 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 23:04:58,114 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 23:04:58,118 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 23:04:58,118 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 23:04:58,118 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 23:04:58,119 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 23:04:58,119 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 23:04:58,119 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 23:04:58,119 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 23:04:58,119 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-27 23:04:58,119 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 23:04:58,121 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-01-27 23:04:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-01-27 23:04:58,122 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:04:58,122 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 23:04:58,122 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-27 23:04:58,122 INFO L82 PathProgramCache]: Analyzing trace with hash 663957385, now seen corresponding path program 1 times [2018-01-27 23:04:58,122 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:04:58,123 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:04:58,124 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:58,124 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:04:58,124 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:04:58,135 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:04:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-27 23:04:58,187 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 23:04:58,187 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-27 23:04:58,188 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-27 23:04:58,188 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-27 23:04:58,188 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 23:04:58,189 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2018-01-27 23:04:58,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:04:58,335 INFO L93 Difference]: Finished difference Result 98 states and 117 transitions. [2018-01-27 23:04:58,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 23:04:58,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-01-27 23:04:58,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:04:58,339 INFO L225 Difference]: With dead ends: 98 [2018-01-27 23:04:58,339 INFO L226 Difference]: Without dead ends: 48 [2018-01-27 23:04:58,344 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 23:04:58,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-01-27 23:04:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-01-27 23:04:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-27 23:04:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2018-01-27 23:04:58,366 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 9 [2018-01-27 23:04:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:04:58,366 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2018-01-27 23:04:58,366 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-27 23:04:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2018-01-27 23:04:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-27 23:04:58,372 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:04:58,372 INFO L330 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-01-27 23:04:58,372 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-27 23:04:58,372 INFO L82 PathProgramCache]: Analyzing trace with hash 2143406101, now seen corresponding path program 1 times [2018-01-27 23:04:58,373 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:04:58,373 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:04:58,375 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:58,375 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:04:58,375 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:04:58,437 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:04:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-01-27 23:04:58,696 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 23:04:58,697 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 23:04:58,712 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:04:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:04:58,794 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:04:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-27 23:04:59,007 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-27 23:04:59,008 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2018-01-27 23:04:59,009 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-27 23:04:59,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-27 23:04:59,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-27 23:04:59,009 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2018-01-27 23:04:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:04:59,251 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2018-01-27 23:04:59,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 23:04:59,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2018-01-27 23:04:59,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:04:59,253 INFO L225 Difference]: With dead ends: 94 [2018-01-27 23:04:59,253 INFO L226 Difference]: Without dead ends: 56 [2018-01-27 23:04:59,254 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-27 23:04:59,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-27 23:04:59,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2018-01-27 23:04:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-01-27 23:04:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-01-27 23:04:59,263 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 49 [2018-01-27 23:04:59,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:04:59,263 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-01-27 23:04:59,263 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-27 23:04:59,264 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-01-27 23:04:59,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-01-27 23:04:59,266 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:04:59,266 INFO L330 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-27 23:04:59,266 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-27 23:04:59,266 INFO L82 PathProgramCache]: Analyzing trace with hash -807443101, now seen corresponding path program 1 times [2018-01-27 23:04:59,267 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:04:59,267 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:04:59,268 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:59,268 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:04:59,268 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:04:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:04:59,303 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:04:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-01-27 23:04:59,517 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 23:04:59,517 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP 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) [2018-01-27 23:04:59,531 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 23:04:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:04:59,588 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 23:04:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-01-27 23:04:59,701 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-27 23:04:59,702 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2018-01-27 23:04:59,702 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-27 23:04:59,702 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-27 23:04:59,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-01-27 23:04:59,703 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 8 states. [2018-01-27 23:05:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:05:00,228 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2018-01-27 23:05:00,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-27 23:05:00,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2018-01-27 23:05:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:05:00,231 INFO L225 Difference]: With dead ends: 104 [2018-01-27 23:05:00,231 INFO L226 Difference]: Without dead ends: 64 [2018-01-27 23:05:00,231 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-01-27 23:05:00,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-01-27 23:05:00,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2018-01-27 23:05:00,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-27 23:05:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2018-01-27 23:05:00,242 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 67 [2018-01-27 23:05:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:05:00,242 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2018-01-27 23:05:00,242 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-27 23:05:00,242 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2018-01-27 23:05:00,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-01-27 23:05:00,244 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:05:00,244 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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] [2018-01-27 23:05:00,244 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-27 23:05:00,245 INFO L82 PathProgramCache]: Analyzing trace with hash -447823567, now seen corresponding path program 2 times [2018-01-27 23:05:00,245 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:05:00,245 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:05:00,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:05:00,246 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 23:05:00,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:05:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:05:00,277 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:05:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-01-27 23:05:00,377 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 23:05:00,377 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-27 23:05:00,377 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 23:05:00,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 23:05:00,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:05:00,378 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 4 states. [2018-01-27 23:05:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:05:00,521 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2018-01-27 23:05:00,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-27 23:05:00,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2018-01-27 23:05:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:05:00,523 INFO L225 Difference]: With dead ends: 95 [2018-01-27 23:05:00,523 INFO L226 Difference]: Without dead ends: 64 [2018-01-27 23:05:00,524 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:05:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-01-27 23:05:00,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-01-27 23:05:00,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-27 23:05:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2018-01-27 23:05:00,531 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 85 [2018-01-27 23:05:00,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:05:00,534 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2018-01-27 23:05:00,534 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 23:05:00,535 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2018-01-27 23:05:00,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-01-27 23:05:00,536 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 23:05:00,536 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 23:05:00,537 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-27 23:05:00,537 INFO L82 PathProgramCache]: Analyzing trace with hash -2118942407, now seen corresponding path program 1 times [2018-01-27 23:05:00,537 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 23:05:00,537 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 23:05:00,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:05:00,538 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 23:05:00,538 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 23:05:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 23:05:00,578 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 23:05:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-01-27 23:05:00,788 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 23:05:00,788 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-27 23:05:00,788 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 23:05:00,788 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 23:05:00,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-27 23:05:00,789 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 4 states. [2018-01-27 23:05:01,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 23:05:01,171 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-01-27 23:05:01,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 23:05:01,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2018-01-27 23:05:01,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 23:05:01,172 INFO L225 Difference]: With dead ends: 60 [2018-01-27 23:05:01,172 INFO L226 Difference]: Without dead ends: 0 [2018-01-27 23:05:01,173 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-27 23:05:01,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-27 23:05:01,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-27 23:05:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-27 23:05:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-27 23:05:01,174 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2018-01-27 23:05:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 23:05:01,174 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-27 23:05:01,174 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 23:05:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-27 23:05:01,175 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-27 23:05:01,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:05:01 BoogieIcfgContainer [2018-01-27 23:05:01,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-27 23:05:01,178 INFO L168 Benchmark]: Toolchain (without parser) took 4511.52 ms. Allocated memory was 304.6 MB in the beginning and 477.1 MB in the end (delta: 172.5 MB). Free memory was 265.3 MB in the beginning and 387.1 MB in the end (delta: -121.8 MB). Peak memory consumption was 50.7 MB. Max. memory is 5.3 GB. [2018-01-27 23:05:01,180 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 304.6 MB. Free memory is still 269.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-27 23:05:01,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.89 ms. Allocated memory is still 304.6 MB. Free memory was 263.3 MB in the beginning and 255.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-27 23:05:01,180 INFO L168 Benchmark]: Boogie Preprocessor took 55.84 ms. Allocated memory is still 304.6 MB. Free memory was 255.4 MB in the beginning and 253.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-27 23:05:01,181 INFO L168 Benchmark]: RCFGBuilder took 540.93 ms. Allocated memory is still 304.6 MB. Free memory was 253.4 MB in the beginning and 236.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-27 23:05:01,181 INFO L168 Benchmark]: TraceAbstraction took 3629.70 ms. Allocated memory was 304.6 MB in the beginning and 477.1 MB in the end (delta: 172.5 MB). Free memory was 234.4 MB in the beginning and 387.1 MB in the end (delta: -152.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 5.3 GB. [2018-01-27 23:05:01,182 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 304.6 MB. Free memory is still 269.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 270.89 ms. Allocated memory is still 304.6 MB. Free memory was 263.3 MB in the beginning and 255.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 55.84 ms. Allocated memory is still 304.6 MB. Free memory was 255.4 MB in the beginning and 253.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 540.93 ms. Allocated memory is still 304.6 MB. Free memory was 253.4 MB in the beginning and 236.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3629.70 ms. Allocated memory was 304.6 MB in the beginning and 477.1 MB in the end (delta: 172.5 MB). Free memory was 234.4 MB in the beginning and 387.1 MB in the end (delta: -152.7 MB). Peak memory consumption was 19.8 MB. Max. memory is 5.3 GB. * 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: [L4] int N; VAL [\old(N)=2, N=0] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 54 locations, 4 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=54occurred 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, 0.0s DumpTime, 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, ReuseStatistics: No data available - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: maxErr0EnsuresViolation CFG has 4 procedures, 54 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L4] int N; VAL [\old(N)=0, N=0] [L19] N = __VERIFIER_nondet_int() [L20] COND FALSE !(N > 1) VAL [\old(N)=0, N=0] [L42] return 1; VAL [N=0] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 54 locations, 4 error locations. UNSAFE Result, 0.0s 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=54occurred 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, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 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, ReuseStatistics: No data available - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 54 locations, 4 error locations. SAFE Result, 3.0s OverallTime, 5 OverallIterations, 9 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 221 SDtfs, 202 SDslu, 329 SDs, 0 SdLazy, 218 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 417 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 63896 SizeOfPredicates, 2 NumberOfNonLiveVariables, 337 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 390/434 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max_true-unreach-call_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-27_23-05-01-192.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max_true-unreach-call_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-27_23-05-01-192.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max_true-unreach-call_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-27_23-05-01-192.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max_true-unreach-call_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-27_23-05-01-192.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/max_true-unreach-call_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-27_23-05-01-192.csv Received shutdown request...