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-tiling/revcpyswp2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:34,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:34,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:34,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:30:34,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:30:34,533 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:30:34,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:30:34,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:30:34,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:30:34,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:30:34,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:30:34,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:30:34,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:34,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:34,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:34,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:34,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:34,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:34,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:34,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:34,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:34,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:34,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:34,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:34,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 16:30:34,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 16:30:34,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 16:30:34,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 16:30:34,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 16:30:34,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 16:30:34,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:34,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:34,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:34,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:34,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:34,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:34,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:34,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:34,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:34,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:34,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:34,565 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 16:30:34,580 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:34,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:34,581 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:34,581 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:34,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:34,582 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:34,582 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:34,582 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:34,582 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:34,583 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:34,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:34,583 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:34,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:34,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:34,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:34,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:34,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:34,584 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:34,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:34,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:34,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:34,585 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:34,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:34,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:34,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:34,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:34,586 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:34,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:34,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:34,587 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:34,616 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:34,629 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:34,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:34,634 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:34,634 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:34,635 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/revcpyswp2.c [2019-10-02 16:30:34,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb052f9fc/b1beaf63db3542628b291d20203c7a2a/FLAGf1d0f11a7 [2019-10-02 16:30:35,169 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:35,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/revcpyswp2.c [2019-10-02 16:30:35,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb052f9fc/b1beaf63db3542628b291d20203c7a2a/FLAGf1d0f11a7 [2019-10-02 16:30:35,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb052f9fc/b1beaf63db3542628b291d20203c7a2a [2019-10-02 16:30:35,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:35,519 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:35,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:35,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:35,523 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:35,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@211cc820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35, skipping insertion in model container [2019-10-02 16:30:35,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,535 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:35,554 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:35,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:35,798 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:35,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:35,924 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:35,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35 WrapperNode [2019-10-02 16:30:35,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:35,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:35,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:35,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:35,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (1/1) ... [2019-10-02 16:30:35,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:35,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:35,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:35,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:35,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (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 16:30:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 16:30:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 16:30:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 16:30:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:36,410 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:36,411 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-02 16:30:36,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:36 BoogieIcfgContainer [2019-10-02 16:30:36,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:36,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:36,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:36,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:36,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:35" (1/3) ... [2019-10-02 16:30:36,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d52a855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:36, skipping insertion in model container [2019-10-02 16:30:36,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:35" (2/3) ... [2019-10-02 16:30:36,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d52a855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:36, skipping insertion in model container [2019-10-02 16:30:36,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:36" (3/3) ... [2019-10-02 16:30:36,419 INFO L109 eAbstractionObserver]: Analyzing ICFG revcpyswp2.c [2019-10-02 16:30:36,429 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:36,437 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:36,454 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:36,479 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:36,480 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:36,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:36,480 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:36,480 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:36,480 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:36,480 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:36,480 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:36,496 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-10-02 16:30:36,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 16:30:36,508 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:36,509 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] [2019-10-02 16:30:36,511 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:36,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:36,517 INFO L82 PathProgramCache]: Analyzing trace with hash -285010775, now seen corresponding path program 1 times [2019-10-02 16:30:36,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:36,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:36,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,577 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:36,685 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 16:30:36,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:36,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:36,688 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:36,693 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:36,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:36,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:36,714 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2019-10-02 16:30:36,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:36,730 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-10-02 16:30:36,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:36,732 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-10-02 16:30:36,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:36,740 INFO L225 Difference]: With dead ends: 34 [2019-10-02 16:30:36,740 INFO L226 Difference]: Without dead ends: 29 [2019-10-02 16:30:36,742 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 16:30:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-02 16:30:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-02 16:30:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-02 16:30:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-02 16:30:36,777 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2019-10-02 16:30:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:36,777 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-02 16:30:36,777 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-02 16:30:36,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 16:30:36,778 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:36,779 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] [2019-10-02 16:30:36,779 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:36,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1627005719, now seen corresponding path program 1 times [2019-10-02 16:30:36,780 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:36,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:36,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,783 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:36,880 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 16:30:36,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:36,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:36,881 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:36,883 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:36,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:36,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:36,884 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 3 states. [2019-10-02 16:30:36,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:36,981 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-02 16:30:36,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:36,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-02 16:30:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:36,984 INFO L225 Difference]: With dead ends: 31 [2019-10-02 16:30:36,984 INFO L226 Difference]: Without dead ends: 31 [2019-10-02 16:30:36,985 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 16:30:36,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-02 16:30:36,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-10-02 16:30:36,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-02 16:30:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-10-02 16:30:36,993 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2019-10-02 16:30:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:36,994 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-10-02 16:30:36,994 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-10-02 16:30:36,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-02 16:30:36,995 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:36,995 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] [2019-10-02 16:30:36,996 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:36,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:36,996 INFO L82 PathProgramCache]: Analyzing trace with hash -381446827, now seen corresponding path program 1 times [2019-10-02 16:30:36,996 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:36,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:36,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:36,999 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:37,112 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 16:30:37,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:37,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:30:37,113 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:37,117 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:37,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:37,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:37,119 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 4 states. [2019-10-02 16:30:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:37,214 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-10-02 16:30:37,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:30:37,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-10-02 16:30:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:37,217 INFO L225 Difference]: With dead ends: 41 [2019-10-02 16:30:37,218 INFO L226 Difference]: Without dead ends: 41 [2019-10-02 16:30:37,218 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:37,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-02 16:30:37,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2019-10-02 16:30:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-02 16:30:37,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-02 16:30:37,228 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22 [2019-10-02 16:30:37,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:37,229 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-02 16:30:37,229 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-02 16:30:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-02 16:30:37,230 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:37,230 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] [2019-10-02 16:30:37,231 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:37,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1677394545, now seen corresponding path program 1 times [2019-10-02 16:30:37,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:37,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:37,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:37,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:37,233 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-02 16:30:37,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:37,358 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:37,359 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2019-10-02 16:30:37,361 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [14], [16], [18], [22], [28], [30], [32], [36], [42], [44], [46], [50], [56], [58], [60], [64], [72], [85], [88], [90], [96], [97], [98], [100] [2019-10-02 16:30:37,403 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:37,404 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:37,473 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:37,475 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 3. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 49 variables. [2019-10-02 16:30:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:37,478 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:37,518 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-10-02 16:30:37,519 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:37,534 INFO L420 sIntCurrentIteration]: We unified 27 AI predicates to 27 [2019-10-02 16:30:37,535 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:37,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:37,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2019-10-02 16:30:37,536 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:37,539 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:37,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:37,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:37,540 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2019-10-02 16:30:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:37,542 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-02 16:30:37,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:37,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-10-02 16:30:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:37,543 INFO L225 Difference]: With dead ends: 7 [2019-10-02 16:30:37,543 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:37,544 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:37,545 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-10-02 16:30:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:37,546 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:37,546 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:37,546 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:37,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:37,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:37 BoogieIcfgContainer [2019-10-02 16:30:37,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:37,554 INFO L168 Benchmark]: Toolchain (without parser) took 2034.89 ms. Allocated memory was 131.1 MB in the beginning and 197.1 MB in the end (delta: 66.1 MB). Free memory was 86.4 MB in the beginning and 86.9 MB in the end (delta: -543.6 kB). Peak memory consumption was 65.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,555 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 131.1 MB. Free memory is still 104.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 16:30:37,556 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.34 ms. Allocated memory was 131.1 MB in the beginning and 197.1 MB in the end (delta: 66.1 MB). Free memory was 86.4 MB in the beginning and 174.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,557 INFO L168 Benchmark]: Boogie Preprocessor took 45.41 ms. Allocated memory is still 197.1 MB. Free memory was 174.1 MB in the beginning and 170.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,558 INFO L168 Benchmark]: RCFGBuilder took 441.27 ms. Allocated memory is still 197.1 MB. Free memory was 170.9 MB in the beginning and 151.9 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,559 INFO L168 Benchmark]: TraceAbstraction took 1138.76 ms. Allocated memory is still 197.1 MB. Free memory was 151.9 MB in the beginning and 86.9 MB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:37,563 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 131.1 MB. Free memory is still 104.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 405.34 ms. Allocated memory was 131.1 MB in the beginning and 197.1 MB in the end (delta: 66.1 MB). Free memory was 86.4 MB in the beginning and 174.1 MB in the end (delta: -87.8 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.41 ms. Allocated memory is still 197.1 MB. Free memory was 174.1 MB in the beginning and 170.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 441.27 ms. Allocated memory is still 197.1 MB. Free memory was 170.9 MB in the beginning and 151.9 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1138.76 ms. Allocated memory is still 197.1 MB. Free memory was 151.9 MB in the beginning and 86.9 MB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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, 34 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 95 SDtfs, 40 SDslu, 24 SDs, 0 SdLazy, 55 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 0.9120370370370371 AbsIntWeakeningRatio, 1.5925925925925926 AbsIntAvgWeakeningVarsNumRemoved, 0.8148148148148148 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 2732 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 4/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...