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/loops/linear_sea.ch.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:48:46,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:48:46,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:48:46,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:48:46,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:48:46,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:48:46,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:48:46,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:48:46,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:48:46,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:48:46,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:48:46,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:48:46,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:48:46,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:48:46,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:48:46,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:48:46,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:48:46,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:48:46,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:48:46,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:48:46,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:48:46,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:48:46,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:48:46,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:48:46,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-10 01:48:46,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:48:46,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:48:46,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:48:46,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:48:46,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:48:46,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:48:46,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:48:46,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:48:46,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:48:46,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:48:46,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:48:46,967 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 [2019-09-10 01:48:46,982 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:48:46,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:48:46,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:48:46,983 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:48:46,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:48:46,984 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:48:46,984 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:48:46,984 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:48:46,984 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:48:46,984 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:48:46,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:48:46,985 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:48:46,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:48:46,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:48:46,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:48:46,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:48:46,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:48:46,987 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:48:46,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:48:46,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:48:46,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:48:46,987 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:48:46,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:48:46,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:48:46,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:48:46,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:48:46,988 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:48:46,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:48:46,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:48:46,989 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:48:47,020 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:48:47,032 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:48:47,036 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:48:47,038 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:48:47,038 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:48:47,039 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/linear_sea.ch.c [2019-09-10 01:48:47,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938da45b9/24c871cd1ed048bca18d2f1298076b4d/FLAGddc436bd6 [2019-09-10 01:48:47,609 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:48:47,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_sea.ch.c [2019-09-10 01:48:47,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938da45b9/24c871cd1ed048bca18d2f1298076b4d/FLAGddc436bd6 [2019-09-10 01:48:47,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938da45b9/24c871cd1ed048bca18d2f1298076b4d [2019-09-10 01:48:47,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:48:47,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:48:47,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:47,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:48:47,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:48:47,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:47" (1/1) ... [2019-09-10 01:48:47,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d8957a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:47, skipping insertion in model container [2019-09-10 01:48:47,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:48:47" (1/1) ... [2019-09-10 01:48:47,969 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:48:47,986 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:48:48,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:48,181 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:48:48,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:48,213 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:48:48,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:48 WrapperNode [2019-09-10 01:48:48,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:48,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:48:48,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:48:48,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:48:48,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:48" (1/1) ... [2019-09-10 01:48:48,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:48" (1/1) ... [2019-09-10 01:48:48,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:48" (1/1) ... [2019-09-10 01:48:48,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:48" (1/1) ... [2019-09-10 01:48:48,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:48" (1/1) ... [2019-09-10 01:48:48,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:48" (1/1) ... [2019-09-10 01:48:48,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:48" (1/1) ... [2019-09-10 01:48:48,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:48:48,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:48:48,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:48:48,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:48:48,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:48" (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 [2019-09-10 01:48:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:48:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:48:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:48:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure linear_search [2019-09-10 01:48:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:48:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:48:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:48:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:48:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-10 01:48:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure linear_search [2019-09-10 01:48:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:48:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:48:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:48:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:48:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:48:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:48:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:48:48,671 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:48:48,677 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-10 01:48:48,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:48 BoogieIcfgContainer [2019-09-10 01:48:48,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:48:48,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:48:48,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:48:48,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:48:48,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:48:47" (1/3) ... [2019-09-10 01:48:48,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176370f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:48, skipping insertion in model container [2019-09-10 01:48:48,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:48" (2/3) ... [2019-09-10 01:48:48,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176370f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:48, skipping insertion in model container [2019-09-10 01:48:48,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:48" (3/3) ... [2019-09-10 01:48:48,694 INFO L109 eAbstractionObserver]: Analyzing ICFG linear_sea.ch.c [2019-09-10 01:48:48,705 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:48:48,712 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:48:48,728 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:48:48,754 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:48:48,754 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:48:48,754 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:48:48,755 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:48:48,755 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:48:48,755 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:48:48,755 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:48:48,755 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:48:48,767 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-09-10 01:48:48,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:48:48,776 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:48,777 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:48,779 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:48,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:48,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1860043698, now seen corresponding path program 1 times [2019-09-10 01:48:48,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:48,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:48,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:48,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:48,825 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:48,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:48,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:48:48,980 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:48,985 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:48:48,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:48:48,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:49,000 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-09-10 01:48:49,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:49,021 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-09-10 01:48:49,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:48:49,023 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-10 01:48:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:49,034 INFO L225 Difference]: With dead ends: 28 [2019-09-10 01:48:49,035 INFO L226 Difference]: Without dead ends: 21 [2019-09-10 01:48:49,037 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 [2019-09-10 01:48:49,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-10 01:48:49,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-10 01:48:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-10 01:48:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-09-10 01:48:49,084 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2019-09-10 01:48:49,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:49,085 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-09-10 01:48:49,085 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:48:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-09-10 01:48:49,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:48:49,086 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:49,087 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:49,087 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:49,088 INFO L82 PathProgramCache]: Analyzing trace with hash 916881159, now seen corresponding path program 1 times [2019-09-10 01:48:49,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:49,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:49,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:49,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:49,090 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:49,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:49,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 01:48:49,285 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:49,288 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:48:49,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:48:49,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:48:49,290 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2019-09-10 01:48:49,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:49,354 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-09-10 01:48:49,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 01:48:49,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-09-10 01:48:49,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:49,357 INFO L225 Difference]: With dead ends: 27 [2019-09-10 01:48:49,357 INFO L226 Difference]: Without dead ends: 21 [2019-09-10 01:48:49,359 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-10 01:48:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-10 01:48:49,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-09-10 01:48:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-09-10 01:48:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-09-10 01:48:49,366 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 20 [2019-09-10 01:48:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:49,367 INFO L475 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-09-10 01:48:49,367 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:48:49,368 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-09-10 01:48:49,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 01:48:49,369 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:49,370 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:49,370 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:49,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:49,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1635275802, now seen corresponding path program 1 times [2019-09-10 01:48:49,371 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:49,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:49,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:49,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:49,374 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:49,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:49,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:48:49,547 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:49,548 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:48:49,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:48:49,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:48:49,549 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2019-09-10 01:48:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:49,609 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-09-10 01:48:49,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:48:49,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-09-10 01:48:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:49,611 INFO L225 Difference]: With dead ends: 25 [2019-09-10 01:48:49,611 INFO L226 Difference]: Without dead ends: 24 [2019-09-10 01:48:49,612 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:48:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-10 01:48:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-09-10 01:48:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-10 01:48:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-10 01:48:49,617 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 20 [2019-09-10 01:48:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:49,617 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-10 01:48:49,617 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:48:49,618 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-10 01:48:49,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-10 01:48:49,618 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:49,619 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:49,619 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:49,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:49,619 INFO L82 PathProgramCache]: Analyzing trace with hash 636491705, now seen corresponding path program 1 times [2019-09-10 01:48:49,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:49,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:49,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:49,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:49,621 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 01:48:49,883 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:48:49,883 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:48:49,885 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-09-10 01:48:49,888 INFO L207 CegarAbsIntRunner]: [0], [5], [8], [14], [16], [23], [24], [25], [26], [30], [33], [35], [42], [45], [47], [53], [54], [55], [57], [58], [59] [2019-09-10 01:48:49,928 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:48:49,928 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:48:50,004 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 01:48:50,020 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:48:50,022 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 23 root evaluator evaluations with a maximum evaluation depth of 9. Performed 23 inverse root evaluator evaluations with a maximum inverse evaluation depth of 9. Never found a fixpoint. Largest state had 22 variables. [2019-09-10 01:48:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:50,026 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:48:50,078 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-09-10 01:48:50,078 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:48:50,085 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-09-10 01:48:50,086 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:48:50,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:48:50,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2019-09-10 01:48:50,087 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:50,087 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:48:50,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:48:50,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:48:50,088 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2019-09-10 01:48:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:50,119 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-09-10 01:48:50,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:48:50,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2019-09-10 01:48:50,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:50,119 INFO L225 Difference]: With dead ends: 7 [2019-09-10 01:48:50,120 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:48:50,120 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:48:50,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:48:50,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:48:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:48:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:48:50,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-10 01:48:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:50,121 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:48:50,122 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:48:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:48:50,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:48:50,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:48:50 BoogieIcfgContainer [2019-09-10 01:48:50,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:48:50,130 INFO L168 Benchmark]: Toolchain (without parser) took 2176.44 ms. Allocated memory was 134.2 MB in the beginning and 227.0 MB in the end (delta: 92.8 MB). Free memory was 89.8 MB in the beginning and 193.7 MB in the end (delta: -103.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:48:50,131 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:48:50,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.80 ms. Allocated memory is still 134.2 MB. Free memory was 89.6 MB in the beginning and 79.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:50,133 INFO L168 Benchmark]: Boogie Preprocessor took 119.55 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 79.8 MB in the beginning and 176.2 MB in the end (delta: -96.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:50,134 INFO L168 Benchmark]: RCFGBuilder took 344.69 ms. Allocated memory is still 200.3 MB. Free memory was 176.2 MB in the beginning and 161.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:50,135 INFO L168 Benchmark]: TraceAbstraction took 1444.83 ms. Allocated memory was 200.3 MB in the beginning and 227.0 MB in the end (delta: 26.7 MB). Free memory was 161.2 MB in the beginning and 193.7 MB in the end (delta: -32.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:48:50,140 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 107.6 MB in the beginning and 107.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.80 ms. Allocated memory is still 134.2 MB. Free memory was 89.6 MB in the beginning and 79.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.55 ms. Allocated memory was 134.2 MB in the beginning and 200.3 MB in the end (delta: 66.1 MB). Free memory was 79.8 MB in the beginning and 176.2 MB in the end (delta: -96.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 344.69 ms. Allocated memory is still 200.3 MB. Free memory was 176.2 MB in the beginning and 161.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1444.83 ms. Allocated memory was 200.3 MB in the beginning and 227.0 MB in the end (delta: 26.7 MB). Free memory was 161.2 MB in the beginning and 193.7 MB in the end (delta: -32.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 5 procedures, 28 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 25 SDslu, 110 SDs, 0 SdLazy, 35 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 0.9715909090909091 AbsIntWeakeningRatio, 1.3181818181818181 AbsIntAvgWeakeningVarsNumRemoved, 1.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 5863 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...