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/for_bounded_loop1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 12:57:26,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:57:26,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:57:26,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:57:26,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:57:26,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:57:26,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:57:26,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:57:26,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:57:26,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:57:26,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:57:26,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-09-20 12:57:26,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:57:26,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:57:26,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:57:26,858 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 12:57:26,874 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:57:26,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:57:26,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:57:26,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:57:26,876 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:57:26,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:57:26,876 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:57:26,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:57:26,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:57:26,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:57:26,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:57:26,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:57:26,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:57:26,877 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:57:26,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:57:26,878 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:57:26,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:57:26,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:57:26,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:57:26,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:57:26,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:57:26,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:57:26,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:57:26,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:57:26,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:57:26,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:57:26,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:57:26,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:57:26,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:57:26,908 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:57:26,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:57:26,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:57:26,925 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:57:26,926 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:57:26,926 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_bounded_loop1.c [2019-09-20 12:57:26,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/634be86b2/b456c05f6a0d413eb67b405beba5918c/FLAGc8fe122ab [2019-09-20 12:57:27,467 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:57:27,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_bounded_loop1.c [2019-09-20 12:57:27,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/634be86b2/b456c05f6a0d413eb67b405beba5918c/FLAGc8fe122ab [2019-09-20 12:57:27,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/634be86b2/b456c05f6a0d413eb67b405beba5918c [2019-09-20 12:57:27,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:57:27,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:57:27,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:57:27,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:57:27,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:57:27,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:57:27" (1/1) ... [2019-09-20 12:57:27,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd3fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:27, skipping insertion in model container [2019-09-20 12:57:27,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:57:27" (1/1) ... [2019-09-20 12:57:27,859 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:57:27,879 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:57:28,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:57:28,061 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:57:28,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:57:28,094 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:57:28,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:28 WrapperNode [2019-09-20 12:57:28,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:57:28,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:57:28,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:57:28,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:57:28,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:28" (1/1) ... [2019-09-20 12:57:28,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:28" (1/1) ... [2019-09-20 12:57:28,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:28" (1/1) ... [2019-09-20 12:57:28,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:28" (1/1) ... [2019-09-20 12:57:28,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:28" (1/1) ... [2019-09-20 12:57:28,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:28" (1/1) ... [2019-09-20 12:57:28,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:28" (1/1) ... [2019-09-20 12:57:28,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:57:28,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:57:28,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:57:28,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:57:28,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:28" (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 12:57:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:57:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:57:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 12:57:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:57:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:57:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 12:57:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:57:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 12:57:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:57:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:57:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:57:28,467 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:57:28,467 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 12:57:28,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:57:28 BoogieIcfgContainer [2019-09-20 12:57:28,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:57:28,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:57:28,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:57:28,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:57:28,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:57:27" (1/3) ... [2019-09-20 12:57:28,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b163d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:57:28, skipping insertion in model container [2019-09-20 12:57:28,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:57:28" (2/3) ... [2019-09-20 12:57:28,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b163d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:57:28, skipping insertion in model container [2019-09-20 12:57:28,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:57:28" (3/3) ... [2019-09-20 12:57:28,478 INFO L109 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1.c [2019-09-20 12:57:28,488 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:57:28,496 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:57:28,519 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:57:28,586 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:57:28,587 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:57:28,587 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:57:28,587 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:57:28,589 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:57:28,589 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:57:28,590 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:57:28,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:57:28,590 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:57:28,622 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-20 12:57:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 12:57:28,629 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:57:28,630 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:57:28,648 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:57:28,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:57:28,655 INFO L82 PathProgramCache]: Analyzing trace with hash 429908039, now seen corresponding path program 1 times [2019-09-20 12:57:28,657 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:57:28,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:57:28,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:28,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:57:28,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:57:28,928 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 12:57:28,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:57:28,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 12:57:28,935 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 12:57:28,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 12:57:28,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 12:57:28,949 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2019-09-20 12:57:29,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:57:29,102 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2019-09-20 12:57:29,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 12:57:29,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-09-20 12:57:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:57:29,114 INFO L225 Difference]: With dead ends: 50 [2019-09-20 12:57:29,115 INFO L226 Difference]: Without dead ends: 26 [2019-09-20 12:57:29,119 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-20 12:57:29,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-20 12:57:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-09-20 12:57:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-20 12:57:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-09-20 12:57:29,166 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2019-09-20 12:57:29,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:57:29,167 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-09-20 12:57:29,167 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 12:57:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-09-20 12:57:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-20 12:57:29,168 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:57:29,168 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:57:29,169 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:57:29,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:57:29,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1060899037, now seen corresponding path program 1 times [2019-09-20 12:57:29,170 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:57:29,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:57:29,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:29,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:57:29,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:57:29,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:57:29,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:57:29,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 12:57:29,365 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 12:57:29,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 12:57:29,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-20 12:57:29,366 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2019-09-20 12:57:29,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:57:29,500 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-09-20 12:57:29,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 12:57:29,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-09-20 12:57:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:57:29,503 INFO L225 Difference]: With dead ends: 32 [2019-09-20 12:57:29,503 INFO L226 Difference]: Without dead ends: 28 [2019-09-20 12:57:29,504 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-20 12:57:29,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-20 12:57:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-09-20 12:57:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-09-20 12:57:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-09-20 12:57:29,513 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 18 [2019-09-20 12:57:29,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:57:29,513 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-09-20 12:57:29,514 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 12:57:29,514 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-09-20 12:57:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-20 12:57:29,515 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:57:29,515 INFO L407 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:57:29,515 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:57:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:57:29,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1415691032, now seen corresponding path program 1 times [2019-09-20 12:57:29,516 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:57:29,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:57:29,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:29,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:57:29,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:57:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 12:57:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-20 12:57:29,576 INFO L474 BasicCegarLoop]: Counterexample might be feasible [2019-09-20 12:57:29,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:57:29 BoogieIcfgContainer [2019-09-20 12:57:29,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:57:29,624 INFO L168 Benchmark]: Toolchain (without parser) took 1782.53 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 85.8 MB in the beginning and 97.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:29,626 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 103.7 MB in the beginning and 103.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 12:57:29,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.66 ms. Allocated memory is still 138.9 MB. Free memory was 85.5 MB in the beginning and 76.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:29,631 INFO L168 Benchmark]: Boogie Preprocessor took 130.90 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 76.0 MB in the beginning and 176.6 MB in the end (delta: -100.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:29,632 INFO L168 Benchmark]: RCFGBuilder took 242.24 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 164.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:29,634 INFO L168 Benchmark]: TraceAbstraction took 1150.50 ms. Allocated memory is still 199.2 MB. Free memory was 164.7 MB in the beginning and 97.7 MB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2019-09-20 12:57:29,648 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 103.7 MB in the beginning and 103.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.66 ms. Allocated memory is still 138.9 MB. Free memory was 85.5 MB in the beginning and 76.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.90 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 76.0 MB in the beginning and 176.6 MB in the end (delta: -100.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 242.24 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 164.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1150.50 ms. Allocated memory is still 199.2 MB. Free memory was 164.7 MB in the beginning and 97.7 MB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 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: [L14] int i=0, x=0, y=0; [L15] int n=__VERIFIER_nondet_int(); [L16] COND FALSE !(!(n>0)) [L17] i=0 VAL [i=0, n=1, x=0, y=0] [L17] COND TRUE i