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/loops/trex02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 12:57:40,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:57:40,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:57:40,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:57:40,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:57:40,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:57:40,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:57:40,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:57:40,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:57:40,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:57:40,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:57:40,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:57:40,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:57:40,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:57:40,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:57:40,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:57:40,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:57:40,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:57:40,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:57:40,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:57:40,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:57:40,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:57:40,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:57:40,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:57:40,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 12:57:40,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:57:40,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:57:40,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:57:40,698 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 [2019-09-20 12:57:40,714 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:57:40,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:57:40,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:57:40,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:57:40,716 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:57:40,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:57:40,717 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:57:40,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:57:40,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:57:40,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:57:40,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:57:40,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:57:40,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:57:40,718 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:57:40,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:57:40,721 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:57:40,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:57:40,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:57:40,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:57:40,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:57:40,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:57:40,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:57:40,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:57:40,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:57:40,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:57:40,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:57:40,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:57:40,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:57:40,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:57:40,762 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:57:40,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:57:40,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:57:40,784 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:57:40,784 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:57:40,785 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-2.c [2019-09-20 12:57:40,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a24059e/677270bba49f47bea794116a9cef94a1/FLAG5cecf88df [2019-09-20 12:57:41,318 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:57:41,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-2.c [2019-09-20 12:57:41,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a24059e/677270bba49f47bea794116a9cef94a1/FLAG5cecf88df [2019-09-20 12:57:41,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a24059e/677270bba49f47bea794116a9cef94a1 [2019-09-20 12:57:41,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:57:41,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:57:41,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:57:41,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:57:41,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:57:41,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:57:41" (1/1) ... [2019-09-20 12:57:41,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45331fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:41, skipping insertion in model container [2019-09-20 12:57:41,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:57:41" (1/1) ... [2019-09-20 12:57:41,714 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:57:41,730 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:57:41,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:57:41,907 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:57:41,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:57:41,937 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:57:41,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:41 WrapperNode [2019-09-20 12:57:41,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:57:41,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:57:41,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:57:41,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:57:42,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:41" (1/1) ... [2019-09-20 12:57:42,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:41" (1/1) ... [2019-09-20 12:57:42,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:41" (1/1) ... [2019-09-20 12:57:42,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:41" (1/1) ... [2019-09-20 12:57:42,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:41" (1/1) ... [2019-09-20 12:57:42,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:41" (1/1) ... [2019-09-20 12:57:42,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:41" (1/1) ... [2019-09-20 12:57:42,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:57:42,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:57:42,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:57:42,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:57:42,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:41" (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 [2019-09-20 12:57:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:57:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:57:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 12:57:42,117 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-09-20 12:57:42,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:57:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:57:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:57:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-20 12:57:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:57:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-09-20 12:57:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:57:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:57:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:57:42,303 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:57:42,303 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 12:57:42,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:57:42 BoogieIcfgContainer [2019-09-20 12:57:42,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:57:42,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:57:42,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:57:42,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:57:42,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:57:41" (1/3) ... [2019-09-20 12:57:42,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c20736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:57:42, skipping insertion in model container [2019-09-20 12:57:42,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:41" (2/3) ... [2019-09-20 12:57:42,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c20736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:57:42, skipping insertion in model container [2019-09-20 12:57:42,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:57:42" (3/3) ... [2019-09-20 12:57:42,331 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-2.c [2019-09-20 12:57:42,359 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:57:42,374 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:57:42,405 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:57:42,433 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:57:42,434 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:57:42,434 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:57:42,434 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:57:42,434 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:57:42,435 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:57:42,435 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:57:42,435 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:57:42,435 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:57:42,450 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-20 12:57:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 12:57:42,455 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:57:42,456 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:57:42,458 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:57:42,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:57:42,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1873481772, now seen corresponding path program 1 times [2019-09-20 12:57:42,465 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:57:42,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:57:42,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:42,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:57:42,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:57:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:57:42,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:57:42,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 12:57:42,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 12:57:42,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 12:57:42,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:57:42,588 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-20 12:57:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:57:42,617 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-09-20 12:57:42,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 12:57:42,619 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-20 12:57:42,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:57:42,633 INFO L225 Difference]: With dead ends: 35 [2019-09-20 12:57:42,634 INFO L226 Difference]: Without dead ends: 18 [2019-09-20 12:57:42,642 INFO L636 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 [2019-09-20 12:57:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-20 12:57:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-20 12:57:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-20 12:57:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-09-20 12:57:42,707 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2019-09-20 12:57:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:57:42,707 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-09-20 12:57:42,708 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 12:57:42,708 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-09-20 12:57:42,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 12:57:42,721 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:57:42,722 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:57:42,723 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:57:42,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:57:42,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1862399520, now seen corresponding path program 1 times [2019-09-20 12:57:42,728 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:57:42,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:57:42,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:42,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:57:42,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 12:57:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 12:57:42,819 INFO L474 BasicCegarLoop]: Counterexample might be feasible [2019-09-20 12:57:42,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:57:42 BoogieIcfgContainer [2019-09-20 12:57:42,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:57:42,855 INFO L168 Benchmark]: Toolchain (without parser) took 1153.43 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 86.7 MB in the beginning and 142.0 MB in the end (delta: -55.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:42,856 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:57:42,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.64 ms. Allocated memory is still 138.9 MB. Free memory was 86.5 MB in the beginning and 76.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:42,861 INFO L168 Benchmark]: Boogie Preprocessor took 114.76 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 76.8 MB in the beginning and 177.1 MB in the end (delta: -100.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:42,862 INFO L168 Benchmark]: RCFGBuilder took 251.49 ms. Allocated memory is still 199.2 MB. Free memory was 177.1 MB in the beginning and 165.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:42,863 INFO L168 Benchmark]: TraceAbstraction took 543.37 ms. Allocated memory is still 199.2 MB. Free memory was 164.7 MB in the beginning and 142.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:42,873 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 239.64 ms. Allocated memory is still 138.9 MB. Free memory was 86.5 MB in the beginning and 76.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.76 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 76.8 MB in the beginning and 177.1 MB in the end (delta: -100.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 251.49 ms. Allocated memory is still 199.2 MB. Free memory was 177.1 MB in the beginning and 165.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 543.37 ms. Allocated memory is still 199.2 MB. Free memory was 164.7 MB in the beginning and 142.0 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x; VAL [\old(x)=1, x=0] [L20] x=__VERIFIER_nondet_int() [L21] COND FALSE !(x > 0) VAL [\old(x)=0, x=-1] [L26] CALL __VERIFIER_assert(x==0) VAL [\old(cond)=0, \old(x)=0, x=-1] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(x)=0, cond=0, x=-1] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(x)=0, cond=0, x=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 26 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=24occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...