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/array-industry-pattern/array_shadowinit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:30:17,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:30:17,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:30:17,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 05:30:17,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:30:17,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:30:17,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:30:17,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:30:17,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:30:17,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:30:17,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:30:17,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:30:17,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:30:17,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:30:17,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:30:17,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:30:17,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 05:30:17,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:30:17,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:30:17,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:30:17,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:30:17,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:30:17,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:30:17,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:30:17,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:30:17,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:30:17,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:30:17,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:30:17,889 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 [2019-09-09 05:30:17,904 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:30:17,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:30:17,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:30:17,905 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:30:17,906 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:30:17,906 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:30:17,906 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:30:17,907 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:30:17,907 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:30:17,907 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:30:17,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:30:17,908 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:30:17,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:30:17,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:30:17,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:30:17,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:30:17,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:30:17,909 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:30:17,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:30:17,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:30:17,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:30:17,912 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:30:17,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:30:17,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:30:17,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:30:17,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:30:17,913 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:30:17,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:30:17,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:30:17,913 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:30:17,966 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:30:17,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:30:17,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:30:17,988 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:30:17,989 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:30:17,990 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i [2019-09-09 05:30:18,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f114e97d/f998930513c344319e232865161c2c20/FLAGf7ec185b8 [2019-09-09 05:30:18,561 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:30:18,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i [2019-09-09 05:30:18,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f114e97d/f998930513c344319e232865161c2c20/FLAGf7ec185b8 [2019-09-09 05:30:18,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f114e97d/f998930513c344319e232865161c2c20 [2019-09-09 05:30:18,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:30:18,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:30:18,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:30:18,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:30:18,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:30:18,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:30:18" (1/1) ... [2019-09-09 05:30:18,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446283bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:30:18, skipping insertion in model container [2019-09-09 05:30:18,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:30:18" (1/1) ... [2019-09-09 05:30:18,949 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:30:18,967 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:30:19,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:30:19,147 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:30:19,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:30:19,276 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:30:19,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:30:19 WrapperNode [2019-09-09 05:30:19,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:30:19,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:30:19,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:30:19,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:30:19,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:30:19" (1/1) ... [2019-09-09 05:30:19,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:30:19" (1/1) ... [2019-09-09 05:30:19,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:30:19" (1/1) ... [2019-09-09 05:30:19,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:30:19" (1/1) ... [2019-09-09 05:30:19,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:30:19" (1/1) ... [2019-09-09 05:30:19,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:30:19" (1/1) ... [2019-09-09 05:30:19,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:30:19" (1/1) ... [2019-09-09 05:30:19,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:30:19,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:30:19,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:30:19,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:30:19,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:30:19" (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 [2019-09-09 05:30:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:30:19,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:30:19,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:30:19,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:30:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:30:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:30:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:30:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:30:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-09 05:30:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:30:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:30:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:30:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:30:19,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:30:19,638 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:30:19,638 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-09 05:30:19,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:30:19 BoogieIcfgContainer [2019-09-09 05:30:19,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:30:19,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:30:19,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:30:19,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:30:19,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:30:18" (1/3) ... [2019-09-09 05:30:19,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10dbbcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:30:19, skipping insertion in model container [2019-09-09 05:30:19,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:30:19" (2/3) ... [2019-09-09 05:30:19,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10dbbcd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:30:19, skipping insertion in model container [2019-09-09 05:30:19,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:30:19" (3/3) ... [2019-09-09 05:30:19,660 INFO L109 eAbstractionObserver]: Analyzing ICFG array_shadowinit.i [2019-09-09 05:30:19,679 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:30:19,689 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:30:19,706 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:30:19,729 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:30:19,730 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:30:19,730 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:30:19,730 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:30:19,730 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:30:19,730 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:30:19,730 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:30:19,730 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:30:19,743 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-09 05:30:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-09 05:30:19,752 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:30:19,753 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:30:19,755 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:30:19,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:30:19,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1065998934, now seen corresponding path program 1 times [2019-09-09 05:30:19,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:30:19,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:30:19,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:30:19,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:30:19,801 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:30:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:30:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:30:19,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:30:19,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:30:19,893 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:30:19,896 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:30:19,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:30:19,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:30:19,910 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-09 05:30:19,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:30:19,924 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2019-09-09 05:30:19,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:30:19,925 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-09 05:30:19,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:30:19,935 INFO L225 Difference]: With dead ends: 24 [2019-09-09 05:30:19,935 INFO L226 Difference]: Without dead ends: 18 [2019-09-09 05:30:19,937 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 [2019-09-09 05:30:19,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-09 05:30:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-09 05:30:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-09 05:30:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-09-09 05:30:19,972 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2019-09-09 05:30:19,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:30:19,972 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-09-09 05:30:19,972 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:30:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-09-09 05:30:19,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-09 05:30:19,973 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:30:19,974 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:30:19,974 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:30:19,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:30:19,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1810951506, now seen corresponding path program 1 times [2019-09-09 05:30:19,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:30:19,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:30:19,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:30:19,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:30:19,977 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:30:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:30:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:30:20,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:30:20,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:30:20,088 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:30:20,089 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:30:20,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:30:20,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:30:20,090 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2019-09-09 05:30:20,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:30:20,119 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-09 05:30:20,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:30:20,120 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-09 05:30:20,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:30:20,121 INFO L225 Difference]: With dead ends: 19 [2019-09-09 05:30:20,121 INFO L226 Difference]: Without dead ends: 19 [2019-09-09 05:30:20,123 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 [2019-09-09 05:30:20,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-09 05:30:20,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-09 05:30:20,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-09 05:30:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-09-09 05:30:20,128 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2019-09-09 05:30:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:30:20,128 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-09-09 05:30:20,128 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:30:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-09-09 05:30:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-09 05:30:20,129 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:30:20,130 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:30:20,130 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:30:20,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:30:20,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1816633037, now seen corresponding path program 1 times [2019-09-09 05:30:20,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:30:20,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:30:20,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:30:20,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:30:20,132 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:30:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:30:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:30:20,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:30:20,462 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:30:20,463 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2019-09-09 05:30:20,465 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [15], [17], [21], [30], [42], [45], [47], [53], [54], [55], [57] [2019-09-09 05:30:20,508 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:30:20,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:30:20,585 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:30:20,586 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 20 variables. [2019-09-09 05:30:20,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:30:20,591 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:30:20,631 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-09-09 05:30:20,631 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:30:20,636 INFO L420 sIntCurrentIteration]: We unified 14 AI predicates to 14 [2019-09-09 05:30:20,637 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:30:20,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:30:20,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-09-09 05:30:20,638 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:30:20,638 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:30:20,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:30:20,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:30:20,639 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 3 states. [2019-09-09 05:30:20,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:30:20,644 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-09-09 05:30:20,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:30:20,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-09-09 05:30:20,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:30:20,645 INFO L225 Difference]: With dead ends: 7 [2019-09-09 05:30:20,645 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:30:20,645 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:30:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:30:20,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:30:20,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:30:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:30:20,646 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-09-09 05:30:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:30:20,647 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:30:20,647 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:30:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:30:20,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:30:20,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:30:20 BoogieIcfgContainer [2019-09-09 05:30:20,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:30:20,656 INFO L168 Benchmark]: Toolchain (without parser) took 1723.76 ms. Allocated memory was 142.6 MB in the beginning and 201.9 MB in the end (delta: 59.2 MB). Free memory was 90.1 MB in the beginning and 111.8 MB in the end (delta: -21.7 MB). Peak memory consumption was 37.5 MB. Max. memory is 7.1 GB. [2019-09-09 05:30:20,657 INFO L168 Benchmark]: CDTParser took 1.23 ms. Allocated memory is still 142.6 MB. Free memory is still 108.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-09 05:30:20,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.49 ms. Allocated memory was 142.6 MB in the beginning and 201.9 MB in the end (delta: 59.2 MB). Free memory was 90.1 MB in the beginning and 180.2 MB in the end (delta: -90.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:30:20,659 INFO L168 Benchmark]: Boogie Preprocessor took 38.22 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 178.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-09-09 05:30:20,660 INFO L168 Benchmark]: RCFGBuilder took 332.43 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 164.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:30:20,661 INFO L168 Benchmark]: TraceAbstraction took 1003.19 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 111.8 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:30:20,664 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.23 ms. Allocated memory is still 142.6 MB. Free memory is still 108.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.49 ms. Allocated memory was 142.6 MB in the beginning and 201.9 MB in the end (delta: 59.2 MB). Free memory was 90.1 MB in the beginning and 180.2 MB in the end (delta: -90.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.22 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 178.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 332.43 ms. Allocated memory is still 201.9 MB. Free memory was 178.2 MB in the beginning and 164.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1003.19 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 111.8 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 50 SDtfs, 3 SDslu, 12 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 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, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9404761904761906 AbsIntWeakeningRatio, 0.8571428571428571 AbsIntAvgWeakeningVarsNumRemoved, 1.1428571428571428 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 1438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...