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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loop-acceleration/phases_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:41:19,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:41:19,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:41:19,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 20:41:19,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:41:19,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:41:19,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:41:19,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:41:19,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:41:19,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:41:19,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:41:19,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:41:19,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:41:19,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:41:19,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:41:19,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:41:19,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:41:19,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:41:19,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:41:19,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:41:19,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-03 20:41:19,973 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:41:19,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:41:19,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:41:19,975 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:41:19,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:41:19,976 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:41:19,976 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:41:19,976 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:41:19,977 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:41:19,977 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:41:19,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:41:19,980 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:41:19,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:41:19,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:41:19,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:41:19,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:41:19,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:41:19,981 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:41:19,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:41:19,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:41:19,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:41:19,982 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:41:19,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:41:19,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:41:19,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:41:19,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:41:19,984 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:41:19,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:41:19,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:41:19,984 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:41:20,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:41:20,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:41:20,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:41:20,068 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:41:20,069 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:41:20,070 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2019-09-03 20:41:20,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ba085632/65094cd7bad84c4a8a97e72b7347f90b/FLAG8d23e5654 [2019-09-03 20:41:20,602 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:41:20,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2019-09-03 20:41:20,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ba085632/65094cd7bad84c4a8a97e72b7347f90b/FLAG8d23e5654 [2019-09-03 20:41:21,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ba085632/65094cd7bad84c4a8a97e72b7347f90b [2019-09-03 20:41:21,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:41:21,021 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:41:21,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:41:21,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:41:21,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:41:21,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:41:21" (1/1) ... [2019-09-03 20:41:21,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720701ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:41:21, skipping insertion in model container [2019-09-03 20:41:21,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:41:21" (1/1) ... [2019-09-03 20:41:21,038 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:41:21,058 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:41:21,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:41:21,220 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:41:21,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:41:21,249 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:41:21,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:41:21 WrapperNode [2019-09-03 20:41:21,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:41:21,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:41:21,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:41:21,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:41:21,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:41:21" (1/1) ... [2019-09-03 20:41:21,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:41:21" (1/1) ... [2019-09-03 20:41:21,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:41:21" (1/1) ... [2019-09-03 20:41:21,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:41:21" (1/1) ... [2019-09-03 20:41:21,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:41:21" (1/1) ... [2019-09-03 20:41:21,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:41:21" (1/1) ... [2019-09-03 20:41:21,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:41:21" (1/1) ... [2019-09-03 20:41:21,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:41:21,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:41:21,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:41:21,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:41:21,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:41:21" (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 [2019-09-03 20:41:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:41:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:41:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:41:21,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:41:21,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:41:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 20:41:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-03 20:41:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:41:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:41:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:41:21,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:41:21,602 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:41:21,602 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 20:41:21,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:41:21 BoogieIcfgContainer [2019-09-03 20:41:21,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:41:21,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:41:21,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:41:21,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:41:21,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:41:21" (1/3) ... [2019-09-03 20:41:21,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:41:21, skipping insertion in model container [2019-09-03 20:41:21,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:41:21" (2/3) ... [2019-09-03 20:41:21,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:41:21, skipping insertion in model container [2019-09-03 20:41:21,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:41:21" (3/3) ... [2019-09-03 20:41:21,612 INFO L109 eAbstractionObserver]: Analyzing ICFG phases_2-1.c [2019-09-03 20:41:21,622 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:41:21,630 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:41:21,654 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:41:21,679 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:41:21,680 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:41:21,680 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:41:21,680 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:41:21,680 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:41:21,680 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:41:21,681 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:41:21,681 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:41:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-03 20:41:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 20:41:21,702 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:41:21,703 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:41:21,705 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:41:21,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:41:21,711 INFO L82 PathProgramCache]: Analyzing trace with hash -133618162, now seen corresponding path program 1 times [2019-09-03 20:41:21,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:41:21,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:41:21,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:41:21,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:41:21,768 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:41:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:41:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:41:21,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:41:21,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:41:21,841 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:41:21,846 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:41:21,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:41:21,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:41:21,866 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-09-03 20:41:21,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:41:21,884 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-09-03 20:41:21,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:41:21,886 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-03 20:41:21,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:41:21,896 INFO L225 Difference]: With dead ends: 19 [2019-09-03 20:41:21,897 INFO L226 Difference]: Without dead ends: 13 [2019-09-03 20:41:21,899 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 [2019-09-03 20:41:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-03 20:41:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-03 20:41:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-03 20:41:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-09-03 20:41:21,938 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2019-09-03 20:41:21,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:41:21,939 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-09-03 20:41:21,939 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:41:21,939 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-09-03 20:41:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 20:41:21,940 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:41:21,940 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:41:21,941 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:41:21,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:41:21,941 INFO L82 PathProgramCache]: Analyzing trace with hash -142853372, now seen corresponding path program 1 times [2019-09-03 20:41:21,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:41:21,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:41:21,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:41:21,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:41:21,943 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:41:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 20:41:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-03 20:41:21,993 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-03 20:41:22,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:41:22 BoogieIcfgContainer [2019-09-03 20:41:22,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:41:22,021 INFO L168 Benchmark]: Toolchain (without parser) took 999.18 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 83.8 MB in the beginning and 141.5 MB in the end (delta: -57.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:41:22,023 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 136.3 MB. Free memory was 102.3 MB in the beginning and 102.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:41:22,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.17 ms. Allocated memory is still 136.3 MB. Free memory was 83.4 MB in the beginning and 74.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:41:22,025 INFO L168 Benchmark]: Boogie Preprocessor took 115.69 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 74.3 MB in the beginning and 174.0 MB in the end (delta: -99.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-09-03 20:41:22,026 INFO L168 Benchmark]: RCFGBuilder took 237.06 ms. Allocated memory is still 197.1 MB. Free memory was 174.0 MB in the beginning and 163.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-09-03 20:41:22,029 INFO L168 Benchmark]: TraceAbstraction took 413.89 ms. Allocated memory is still 197.1 MB. Free memory was 162.4 MB in the beginning and 141.5 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2019-09-03 20:41:22,041 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 136.3 MB. Free memory was 102.3 MB in the beginning and 102.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 228.17 ms. Allocated memory is still 136.3 MB. Free memory was 83.4 MB in the beginning and 74.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.69 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 74.3 MB in the beginning and 174.0 MB in the end (delta: -99.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 237.06 ms. Allocated memory is still 197.1 MB. Free memory was 174.0 MB in the beginning and 163.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 413.89 ms. Allocated memory is still 197.1 MB. Free memory was 162.4 MB in the beginning and 141.5 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int x = 1; [L14] unsigned int y = __VERIFIER_nondet_uint(); [L16] COND FALSE !(!(y > 0)) VAL [x=1, y=1] [L18] COND FALSE !(x < y) VAL [x=1, y=1] [L26] CALL __VERIFIER_assert(x != y) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 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=19occurred 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...