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-examples/standard_copy6_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:53,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:53,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:53,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:29:53,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:29:53,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:29:53,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:29:53,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:29:53,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:29:53,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:29:53,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:29:53,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:29:53,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:53,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:53,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:53,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:53,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:53,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:53,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:53,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:53,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:53,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:53,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:53,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:53,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:29:53,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:53,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:53,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:53,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:53,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:53,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:53,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:53,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:53,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:53,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:53,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:53,923 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 [2019-10-02 16:29:53,949 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:53,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:53,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:53,950 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:53,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:53,951 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:53,951 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:53,951 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:53,951 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:53,951 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:53,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:53,952 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:53,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:53,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:53,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:53,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:53,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:53,953 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:53,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:53,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:53,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:53,954 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:53,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:53,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:53,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:53,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:53,955 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:53,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:53,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:53,956 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:53,984 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:54,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:54,006 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:54,007 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:54,008 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:54,009 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i [2019-10-02 16:29:54,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b744a5f9/6e3974184b2f43718874f0bcb95131ad/FLAG1f55117e8 [2019-10-02 16:29:54,592 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:54,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i [2019-10-02 16:29:54,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b744a5f9/6e3974184b2f43718874f0bcb95131ad/FLAG1f55117e8 [2019-10-02 16:29:54,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b744a5f9/6e3974184b2f43718874f0bcb95131ad [2019-10-02 16:29:54,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:54,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:54,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:54,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:54,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:54,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:54" (1/1) ... [2019-10-02 16:29:54,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b840ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:54, skipping insertion in model container [2019-10-02 16:29:54,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:54" (1/1) ... [2019-10-02 16:29:54,961 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:54,975 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:55,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:55,166 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:55,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:55,208 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:55,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55 WrapperNode [2019-10-02 16:29:55,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:55,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:55,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:55,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:55,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:55,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:55,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:55,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:55,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (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 [2019-10-02 16:29:55,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:55,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:55,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:55,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:55,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:55,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:55,744 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:55,744 INFO L283 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-02 16:29:55,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:55 BoogieIcfgContainer [2019-10-02 16:29:55,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:55,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:55,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:55,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:55,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:54" (1/3) ... [2019-10-02 16:29:55,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee751db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:55, skipping insertion in model container [2019-10-02 16:29:55,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (2/3) ... [2019-10-02 16:29:55,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee751db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:55, skipping insertion in model container [2019-10-02 16:29:55,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:55" (3/3) ... [2019-10-02 16:29:55,754 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-2.i [2019-10-02 16:29:55,765 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:55,775 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:55,795 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:55,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:55,827 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:55,827 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:55,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:55,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:55,827 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:55,828 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:55,828 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-10-02 16:29:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-02 16:29:55,860 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:55,861 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:55,867 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:55,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:55,873 INFO L82 PathProgramCache]: Analyzing trace with hash 772526198, now seen corresponding path program 1 times [2019-10-02 16:29:55,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:55,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:55,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:55,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:55,927 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:56,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:56,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:56,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:56,036 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:56,041 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:56,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:56,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:56,059 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-10-02 16:29:56,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:56,079 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2019-10-02 16:29:56,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:56,080 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-10-02 16:29:56,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:56,091 INFO L225 Difference]: With dead ends: 42 [2019-10-02 16:29:56,091 INFO L226 Difference]: Without dead ends: 37 [2019-10-02 16:29:56,093 INFO L640 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 [2019-10-02 16:29:56,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-02 16:29:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-02 16:29:56,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-02 16:29:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-10-02 16:29:56,134 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2019-10-02 16:29:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:56,135 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-10-02 16:29:56,135 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-10-02 16:29:56,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-02 16:29:56,136 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:56,137 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:56,137 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:56,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:56,137 INFO L82 PathProgramCache]: Analyzing trace with hash 514335338, now seen corresponding path program 1 times [2019-10-02 16:29:56,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:56,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:56,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,140 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:56,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:56,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:56,252 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:56,254 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:56,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:56,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:56,257 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 3 states. [2019-10-02 16:29:56,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:56,282 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-10-02 16:29:56,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:56,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-02 16:29:56,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:56,284 INFO L225 Difference]: With dead ends: 39 [2019-10-02 16:29:56,285 INFO L226 Difference]: Without dead ends: 39 [2019-10-02 16:29:56,286 INFO L640 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 [2019-10-02 16:29:56,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-02 16:29:56,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2019-10-02 16:29:56,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-02 16:29:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-10-02 16:29:56,293 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 25 [2019-10-02 16:29:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:56,293 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-10-02 16:29:56,294 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-10-02 16:29:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-02 16:29:56,295 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:56,295 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:56,296 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:56,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1148318088, now seen corresponding path program 1 times [2019-10-02 16:29:56,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:56,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:56,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,299 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:56,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:56,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:56,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:56,389 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:56,389 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:56,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:56,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:56,390 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 3 states. [2019-10-02 16:29:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:56,498 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2019-10-02 16:29:56,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:56,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-02 16:29:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:56,500 INFO L225 Difference]: With dead ends: 50 [2019-10-02 16:29:56,500 INFO L226 Difference]: Without dead ends: 50 [2019-10-02 16:29:56,500 INFO L640 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 [2019-10-02 16:29:56,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-02 16:29:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2019-10-02 16:29:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-02 16:29:56,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-10-02 16:29:56,507 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 27 [2019-10-02 16:29:56,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:56,507 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-10-02 16:29:56,507 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:56,507 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-10-02 16:29:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-02 16:29:56,509 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:56,509 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:56,509 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:56,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:56,510 INFO L82 PathProgramCache]: Analyzing trace with hash 342802812, now seen corresponding path program 1 times [2019-10-02 16:29:56,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:56,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:56,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,512 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-02 16:29:56,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:56,620 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:56,621 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2019-10-02 16:29:56,623 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [29], [33], [39], [41], [43], [47], [53], [55], [57], [61], [67], [69], [71], [75], [81], [83], [85], [89], [95], [97], [99], [103], [111], [121], [124], [126], [132], [133], [134], [136] [2019-10-02 16:29:56,660 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:56,660 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:56,747 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:56,750 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 45 variables. [2019-10-02 16:29:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:56,754 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:56,801 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:29:56,801 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:56,807 INFO L420 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2019-10-02 16:29:56,807 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:56,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:56,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:29:56,808 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:56,809 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:56,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:56,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:56,810 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 2 states. [2019-10-02 16:29:56,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:56,811 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:29:56,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:56,811 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2019-10-02 16:29:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:56,811 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:29:56,812 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:56,812 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:56,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:56,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:56,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:56,813 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-10-02 16:29:56,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:56,814 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:56,814 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:56,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:56,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:56 BoogieIcfgContainer [2019-10-02 16:29:56,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:56,822 INFO L168 Benchmark]: Toolchain (without parser) took 1875.78 ms. Allocated memory was 133.7 MB in the beginning and 200.8 MB in the end (delta: 67.1 MB). Free memory was 88.5 MB in the beginning and 96.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:56,823 INFO L168 Benchmark]: CDTParser took 1.17 ms. Allocated memory is still 133.7 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:56,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.97 ms. Allocated memory is still 133.7 MB. Free memory was 88.1 MB in the beginning and 77.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:56,826 INFO L168 Benchmark]: Boogie Preprocessor took 134.54 ms. Allocated memory was 133.7 MB in the beginning and 200.8 MB in the end (delta: 67.1 MB). Free memory was 77.6 MB in the beginning and 176.0 MB in the end (delta: -98.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:56,826 INFO L168 Benchmark]: RCFGBuilder took 402.77 ms. Allocated memory is still 200.8 MB. Free memory was 176.0 MB in the beginning and 155.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:56,827 INFO L168 Benchmark]: TraceAbstraction took 1072.13 ms. Allocated memory is still 200.8 MB. Free memory was 155.3 MB in the beginning and 96.9 MB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:56,832 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17 ms. Allocated memory is still 133.7 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.97 ms. Allocated memory is still 133.7 MB. Free memory was 88.1 MB in the beginning and 77.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.54 ms. Allocated memory was 133.7 MB in the beginning and 200.8 MB in the end (delta: 67.1 MB). Free memory was 77.6 MB in the beginning and 176.0 MB in the end (delta: -98.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.77 ms. Allocated memory is still 200.8 MB. Free memory was 176.0 MB in the beginning and 155.3 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1072.13 ms. Allocated memory is still 200.8 MB. Free memory was 155.3 MB in the beginning and 96.9 MB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 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, 42 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 128 SDtfs, 7 SDslu, 60 SDs, 0 SdLazy, 35 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=3, 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, 0.9013157894736842 AbsIntWeakeningRatio, 1.0789473684210527 AbsIntAvgWeakeningVarsNumRemoved, 0.15789473684210525 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 3600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 7/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...