java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 12:54:43,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 12:54:43,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 12:54:43,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 12:54:43,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 12:54:43,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 12:54:43,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 12:54:43,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 12:54:43,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 12:54:43,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 12:54:43,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 12:54:43,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 12:54:43,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 12:54:43,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 12:54:43,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 12:54:43,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 12:54:43,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 12:54:43,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 12:54:43,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 12:54:43,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 12:54:43,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 12:54:43,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 12:54:43,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 12:54:43,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 12:54:43,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 12:54:43,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 12:54:43,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 12:54:43,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 12:54:43,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 12:54:43,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 12:54:43,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 12:54:43,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 12:54:43,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 12:54:43,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 12:54:43,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 12:54:43,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 12:54:43,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 12:54:43,876 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 12:54:43,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 12:54:43,877 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 12:54:43,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 12:54:43,878 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 12:54:43,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 12:54:43,878 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 12:54:43,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 12:54:43,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 12:54:43,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 12:54:43,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 12:54:43,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 12:54:43,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 12:54:43,880 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 12:54:43,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 12:54:43,880 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 12:54:43,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 12:54:43,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 12:54:43,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 12:54:43,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 12:54:43,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 12:54:43,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 12:54:43,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 12:54:43,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 12:54:43,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 12:54:43,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 12:54:43,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 12:54:43,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 12:54:43,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 12:54:43,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 12:54:43,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 12:54:43,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 12:54:43,935 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 12:54:43,935 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 12:54:43,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2019-09-07 12:54:43,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20dde1692/79c3ecded37348ab8b76678d933d0492/FLAG61c3254c0 [2019-09-07 12:54:44,413 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 12:54:44,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2019-09-07 12:54:44,421 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20dde1692/79c3ecded37348ab8b76678d933d0492/FLAG61c3254c0 [2019-09-07 12:54:44,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20dde1692/79c3ecded37348ab8b76678d933d0492 [2019-09-07 12:54:44,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 12:54:44,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 12:54:44,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 12:54:44,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 12:54:44,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 12:54:44,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:54:44" (1/1) ... [2019-09-07 12:54:44,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed68154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:44, skipping insertion in model container [2019-09-07 12:54:44,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:54:44" (1/1) ... [2019-09-07 12:54:44,840 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 12:54:44,854 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 12:54:45,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:54:45,012 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 12:54:45,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:54:45,047 INFO L192 MainTranslator]: Completed translation [2019-09-07 12:54:45,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:45 WrapperNode [2019-09-07 12:54:45,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 12:54:45,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 12:54:45,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 12:54:45,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 12:54:45,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:45" (1/1) ... [2019-09-07 12:54:45,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:45" (1/1) ... [2019-09-07 12:54:45,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:45" (1/1) ... [2019-09-07 12:54:45,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:45" (1/1) ... [2019-09-07 12:54:45,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:45" (1/1) ... [2019-09-07 12:54:45,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:45" (1/1) ... [2019-09-07 12:54:45,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:45" (1/1) ... [2019-09-07 12:54:45,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 12:54:45,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 12:54:45,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 12:54:45,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 12:54:45,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:45" (1/1) ... No working directory specified, using /storage/repos/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 [2019-09-07 12:54:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 12:54:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 12:54:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-07 12:54:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 12:54:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 12:54:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-07 12:54:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-07 12:54:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 12:54:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 12:54:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 12:54:45,516 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 12:54:45,516 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 12:54:45,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:54:45 BoogieIcfgContainer [2019-09-07 12:54:45,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 12:54:45,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 12:54:45,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 12:54:45,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 12:54:45,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 12:54:44" (1/3) ... [2019-09-07 12:54:45,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40830bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:54:45, skipping insertion in model container [2019-09-07 12:54:45,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:54:45" (2/3) ... [2019-09-07 12:54:45,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40830bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:54:45, skipping insertion in model container [2019-09-07 12:54:45,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:54:45" (3/3) ... [2019-09-07 12:54:45,525 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2019-09-07 12:54:45,535 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 12:54:45,545 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 12:54:45,562 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 12:54:45,593 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 12:54:45,593 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 12:54:45,594 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 12:54:45,594 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 12:54:45,594 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 12:54:45,594 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 12:54:45,594 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 12:54:45,594 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 12:54:45,595 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 12:54:45,613 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-09-07 12:54:45,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-07 12:54:45,619 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:45,620 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:54:45,622 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:45,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:45,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1906239810, now seen corresponding path program 1 times [2019-09-07 12:54:45,630 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:45,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:45,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:45,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:45,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:54:45,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:54:45,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-07 12:54:45,738 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-07 12:54:45,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-07 12:54:45,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-07 12:54:45,751 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-09-07 12:54:45,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:45,772 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2019-09-07 12:54:45,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-07 12:54:45,774 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-07 12:54:45,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:45,782 INFO L225 Difference]: With dead ends: 38 [2019-09-07 12:54:45,783 INFO L226 Difference]: Without dead ends: 21 [2019-09-07 12:54:45,786 INFO L628 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 [2019-09-07 12:54:45,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-07 12:54:45,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-07 12:54:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-07 12:54:45,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2019-09-07 12:54:45,824 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2019-09-07 12:54:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:45,825 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2019-09-07 12:54:45,825 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-07 12:54:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2019-09-07 12:54:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-07 12:54:45,826 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:45,826 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:54:45,826 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:45,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1847134466, now seen corresponding path program 1 times [2019-09-07 12:54:45,827 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:45,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:45,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:45,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:45,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:54:45,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:54:45,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:54:45,970 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:54:45,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:54:45,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:54:45,971 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 3 states. [2019-09-07 12:54:46,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:46,058 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2019-09-07 12:54:46,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:54:46,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-09-07 12:54:46,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:46,062 INFO L225 Difference]: With dead ends: 28 [2019-09-07 12:54:46,062 INFO L226 Difference]: Without dead ends: 23 [2019-09-07 12:54:46,063 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:54:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-07 12:54:46,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-09-07 12:54:46,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-07 12:54:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2019-09-07 12:54:46,070 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 10 [2019-09-07 12:54:46,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:46,071 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2019-09-07 12:54:46,071 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:54:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2019-09-07 12:54:46,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-07 12:54:46,072 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:46,073 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:54:46,073 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:46,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:46,074 INFO L82 PathProgramCache]: Analyzing trace with hash -129940435, now seen corresponding path program 1 times [2019-09-07 12:54:46,074 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:46,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:46,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:46,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:46,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:54:46,183 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:54:46,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:54:46,184 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:54:46,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:54:46,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:54:46,185 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand 3 states. [2019-09-07 12:54:46,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:46,306 INFO L93 Difference]: Finished difference Result 50 states and 81 transitions. [2019-09-07 12:54:46,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:54:46,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-09-07 12:54:46,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:46,309 INFO L225 Difference]: With dead ends: 50 [2019-09-07 12:54:46,309 INFO L226 Difference]: Without dead ends: 34 [2019-09-07 12:54:46,310 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:54:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-09-07 12:54:46,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-09-07 12:54:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-09-07 12:54:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2019-09-07 12:54:46,318 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 21 [2019-09-07 12:54:46,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:46,318 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2019-09-07 12:54:46,318 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:54:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2019-09-07 12:54:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-07 12:54:46,319 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:46,320 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:54:46,320 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:46,321 INFO L82 PathProgramCache]: Analyzing trace with hash 263086575, now seen corresponding path program 1 times [2019-09-07 12:54:46,321 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:46,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:46,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:46,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:46,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:54:46,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 12:54:46,653 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-09-07 12:54:46,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:46,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-07 12:54:46,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 12:54:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:54:46,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 12:54:46,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-09-07 12:54:46,782 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 12:54:46,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 12:54:46,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2019-09-07 12:54:46,785 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 14 states. [2019-09-07 12:54:47,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:47,063 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2019-09-07 12:54:47,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 12:54:47,063 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2019-09-07 12:54:47,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:47,064 INFO L225 Difference]: With dead ends: 51 [2019-09-07 12:54:47,065 INFO L226 Difference]: Without dead ends: 46 [2019-09-07 12:54:47,065 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2019-09-07 12:54:47,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-07 12:54:47,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2019-09-07 12:54:47,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-07 12:54:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2019-09-07 12:54:47,072 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 21 [2019-09-07 12:54:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:47,073 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2019-09-07 12:54:47,073 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 12:54:47,073 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2019-09-07 12:54:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-07 12:54:47,074 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:47,074 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:54:47,075 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:47,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:47,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1016777103, now seen corresponding path program 1 times [2019-09-07 12:54:47,075 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:47,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:47,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:47,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:47,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:54:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:54:47,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:54:47,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 12:54:47,138 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 12:54:47,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 12:54:47,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:54:47,138 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 3 states. [2019-09-07 12:54:47,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:54:47,222 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2019-09-07 12:54:47,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 12:54:47,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-09-07 12:54:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:54:47,224 INFO L225 Difference]: With dead ends: 61 [2019-09-07 12:54:47,225 INFO L226 Difference]: Without dead ends: 45 [2019-09-07 12:54:47,227 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 12:54:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-07 12:54:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-09-07 12:54:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-07 12:54:47,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2019-09-07 12:54:47,238 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 21 [2019-09-07 12:54:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:54:47,238 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2019-09-07 12:54:47,239 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 12:54:47,239 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2019-09-07 12:54:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-07 12:54:47,242 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:54:47,243 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:54:47,243 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:54:47,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:54:47,243 INFO L82 PathProgramCache]: Analyzing trace with hash -345519953, now seen corresponding path program 1 times [2019-09-07 12:54:47,244 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:54:47,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:54:47,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:47,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:54:47,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:54:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-07 12:54:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-07 12:54:47,369 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-07 12:54:47,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.09 12:54:47 BoogieIcfgContainer [2019-09-07 12:54:47,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-07 12:54:47,406 INFO L168 Benchmark]: Toolchain (without parser) took 2578.08 ms. Allocated memory was 133.2 MB in the beginning and 224.9 MB in the end (delta: 91.8 MB). Free memory was 89.0 MB in the beginning and 142.4 MB in the end (delta: -53.4 MB). Peak memory consumption was 38.4 MB. Max. memory is 7.1 GB. [2019-09-07 12:54:47,407 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-07 12:54:47,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.98 ms. Allocated memory is still 133.2 MB. Free memory was 88.6 MB in the beginning and 78.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-09-07 12:54:47,411 INFO L168 Benchmark]: Boogie Preprocessor took 109.38 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 78.9 MB in the beginning and 176.7 MB in the end (delta: -97.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-07 12:54:47,413 INFO L168 Benchmark]: RCFGBuilder took 359.78 ms. Allocated memory is still 200.3 MB. Free memory was 176.1 MB in the beginning and 160.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2019-09-07 12:54:47,414 INFO L168 Benchmark]: TraceAbstraction took 1882.67 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 160.9 MB in the beginning and 142.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2019-09-07 12:54:47,422 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 133.2 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 221.98 ms. Allocated memory is still 133.2 MB. Free memory was 88.6 MB in the beginning and 78.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.38 ms. Allocated memory was 133.2 MB in the beginning and 200.3 MB in the end (delta: 67.1 MB). Free memory was 78.9 MB in the beginning and 176.7 MB in the end (delta: -97.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 359.78 ms. Allocated memory is still 200.3 MB. Free memory was 176.1 MB in the beginning and 160.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1882.67 ms. Allocated memory was 200.3 MB in the beginning and 224.9 MB in the end (delta: 24.6 MB). Free memory was 160.9 MB in the beginning and 142.4 MB in the end (delta: 18.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned int y = __VERIFIER_nondet_uint(); [L15] COND TRUE x < 99 VAL [x=0, y=1] [L16] COND FALSE !(y % 2 == 0) [L17] x += 2 VAL [x=2, y=1] [L19] COND FALSE !(y % 2 == 0) [L20] x -= 2 VAL [x=0, y=1] [L22] COND FALSE !(y % 2 == 0) [L23] x += 2 VAL [x=2, y=1] [L25] COND FALSE !(y % 2 == 0) [L26] x -= 2 VAL [x=0, y=1] [L28] COND FALSE !(y % 2 == 0) [L29] x += 2 VAL [x=2, y=1] [L31] COND FALSE !(y % 2 == 0) [L32] x -= 4 VAL [x=4294967294, y=1] [L34] COND FALSE !(y % 2 == 0) [L35] x += 4 VAL [x=2, y=1] [L37] COND FALSE !(y % 2 == 0) [L38] x += 2 VAL [x=4, y=1] [L40] COND FALSE !(y % 2 == 0) [L41] x -= 4 VAL [x=0, y=1] [L43] COND FALSE !(y % 2 == 0) [L44] x -= 4 VAL [x=4294967292, y=1] [L15] COND FALSE !(x < 99) VAL [x=4294967292, y=1] [L47] CALL __VERIFIER_assert((x % 2) == (y % 2)) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. UNSAFE Result, 1.8s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 22 SDslu, 116 SDs, 0 SdLazy, 363 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 5 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 6956 SizeOfPredicates, 1 NumberOfNonLiveVariables, 65 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...