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/rewnif.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 05:34:19,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 05:34:19,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 05:34:19,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 05:34:19,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 05:34:19,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 05:34:19,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 05:34:19,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 05:34:19,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 05:34:19,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 05:34:19,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 05:34:19,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 05:34:19,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 05:34:19,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 05:34:19,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 05:34:19,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 05:34:19,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 05:34:19,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 05:34:19,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 05:34:19,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 05:34:19,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 05:34:19,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 05:34:19,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 05:34:19,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 05:34:19,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 05:34:19,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 05:34:19,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 05:34:19,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 05:34:19,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 05:34:19,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 05:34:19,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 05:34:19,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 05:34:19,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 05:34:19,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 05:34:19,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 05:34:19,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 05:34:19,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 05:34:19,541 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 05:34:19,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 05:34:19,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 05:34:19,543 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 05:34:19,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 05:34:19,543 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 05:34:19,544 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 05:34:19,544 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 05:34:19,544 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 05:34:19,544 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 05:34:19,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 05:34:19,547 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 05:34:19,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 05:34:19,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 05:34:19,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 05:34:19,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 05:34:19,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 05:34:19,548 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 05:34:19,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 05:34:19,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 05:34:19,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 05:34:19,549 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 05:34:19,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 05:34:19,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:34:19,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 05:34:19,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 05:34:19,550 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 05:34:19,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 05:34:19,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 05:34:19,551 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 05:34:19,595 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 05:34:19,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 05:34:19,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 05:34:19,616 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 05:34:19,616 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 05:34:19,617 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnif.c [2019-09-09 05:34:19,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b7a46ce/64394adc74124572a4422bdaea4e7526/FLAG09043e2e5 [2019-09-09 05:34:20,156 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 05:34:20,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewnif.c [2019-09-09 05:34:20,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b7a46ce/64394adc74124572a4422bdaea4e7526/FLAG09043e2e5 [2019-09-09 05:34:20,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9b7a46ce/64394adc74124572a4422bdaea4e7526 [2019-09-09 05:34:20,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 05:34:20,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 05:34:20,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 05:34:20,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 05:34:20,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 05:34:20,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:34:20" (1/1) ... [2019-09-09 05:34:20,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49beeaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:20, skipping insertion in model container [2019-09-09 05:34:20,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 05:34:20" (1/1) ... [2019-09-09 05:34:20,553 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 05:34:20,569 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 05:34:20,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:34:20,754 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 05:34:20,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 05:34:20,785 INFO L192 MainTranslator]: Completed translation [2019-09-09 05:34:20,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:20 WrapperNode [2019-09-09 05:34:20,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 05:34:20,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 05:34:20,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 05:34:20,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 05:34:20,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:20" (1/1) ... [2019-09-09 05:34:20,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:20" (1/1) ... [2019-09-09 05:34:20,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:20" (1/1) ... [2019-09-09 05:34:20,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:20" (1/1) ... [2019-09-09 05:34:20,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:20" (1/1) ... [2019-09-09 05:34:20,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:20" (1/1) ... [2019-09-09 05:34:20,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:20" (1/1) ... [2019-09-09 05:34:20,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 05:34:20,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 05:34:20,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 05:34:20,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 05:34:20,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 05:34:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 05:34:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 05:34:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-09 05:34:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 05:34:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 05:34:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-09 05:34:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-09 05:34:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 05:34:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-09 05:34:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 05:34:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-09 05:34:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-09 05:34:20,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-09 05:34:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 05:34:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 05:34:20,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-09 05:34:21,220 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 05:34:21,220 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-09 05:34:21,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:34:21 BoogieIcfgContainer [2019-09-09 05:34:21,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 05:34:21,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 05:34:21,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 05:34:21,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 05:34:21,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 05:34:20" (1/3) ... [2019-09-09 05:34:21,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7224c767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:34:21, skipping insertion in model container [2019-09-09 05:34:21,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 05:34:20" (2/3) ... [2019-09-09 05:34:21,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7224c767 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 05:34:21, skipping insertion in model container [2019-09-09 05:34:21,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 05:34:21" (3/3) ... [2019-09-09 05:34:21,234 INFO L109 eAbstractionObserver]: Analyzing ICFG rewnif.c [2019-09-09 05:34:21,241 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 05:34:21,247 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 05:34:21,262 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 05:34:21,287 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 05:34:21,288 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 05:34:21,288 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 05:34:21,288 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 05:34:21,288 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 05:34:21,288 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 05:34:21,288 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 05:34:21,289 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 05:34:21,302 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-09-09 05:34:21,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-09 05:34:21,309 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:34:21,310 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:34:21,312 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:34:21,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:34:21,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1294486485, now seen corresponding path program 1 times [2019-09-09 05:34:21,318 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:34:21,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:21,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:34:21,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:21,365 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:34:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:34:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:34:21,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:34:21,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-09 05:34:21,457 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:34:21,463 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-09 05:34:21,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-09 05:34:21,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:34:21,481 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-09-09 05:34:21,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:34:21,498 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-09-09 05:34:21,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-09 05:34:21,500 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-09 05:34:21,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:34:21,509 INFO L225 Difference]: With dead ends: 27 [2019-09-09 05:34:21,509 INFO L226 Difference]: Without dead ends: 22 [2019-09-09 05:34:21,511 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-09 05:34:21,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-09 05:34:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-09 05:34:21,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-09 05:34:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-09-09 05:34:21,553 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2019-09-09 05:34:21,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:34:21,554 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-09-09 05:34:21,554 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-09 05:34:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-09-09 05:34:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-09 05:34:21,555 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:34:21,555 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:34:21,556 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:34:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:34:21,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1653126776, now seen corresponding path program 1 times [2019-09-09 05:34:21,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:34:21,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:21,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:34:21,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:21,558 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:34:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:34:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:34:21,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:34:21,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 05:34:21,702 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:34:21,703 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 05:34:21,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 05:34:21,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:34:21,704 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2019-09-09 05:34:21,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:34:21,786 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-09-09 05:34:21,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:34:21,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-09 05:34:21,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:34:21,789 INFO L225 Difference]: With dead ends: 26 [2019-09-09 05:34:21,789 INFO L226 Difference]: Without dead ends: 26 [2019-09-09 05:34:21,791 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 05:34:21,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-09 05:34:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-09-09 05:34:21,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-09 05:34:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-09 05:34:21,801 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2019-09-09 05:34:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:34:21,802 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-09 05:34:21,802 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 05:34:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-09 05:34:21,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-09 05:34:21,804 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:34:21,804 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:34:21,805 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:34:21,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:34:21,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1007604157, now seen corresponding path program 1 times [2019-09-09 05:34:21,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:34:21,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:21,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:34:21,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:21,809 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:34:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:34:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:34:21,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 05:34:21,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 05:34:21,890 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:34:21,890 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 05:34:21,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 05:34:21,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:34:21,891 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 4 states. [2019-09-09 05:34:21,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:34:21,942 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-09-09 05:34:21,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 05:34:21,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-09-09 05:34:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:34:21,944 INFO L225 Difference]: With dead ends: 27 [2019-09-09 05:34:21,944 INFO L226 Difference]: Without dead ends: 27 [2019-09-09 05:34:21,944 INFO L628 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 [2019-09-09 05:34:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-09 05:34:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-09-09 05:34:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-09 05:34:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-09-09 05:34:21,950 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 18 [2019-09-09 05:34:21,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:34:21,950 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-09-09 05:34:21,950 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 05:34:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-09-09 05:34:21,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-09 05:34:21,951 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 05:34:21,952 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 05:34:21,952 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 05:34:21,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:34:21,952 INFO L82 PathProgramCache]: Analyzing trace with hash -2051596356, now seen corresponding path program 1 times [2019-09-09 05:34:21,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 05:34:21,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:21,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 05:34:21,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 05:34:21,954 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 05:34:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 05:34:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 05:34:22,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 05:34:22,265 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 05:34:22,266 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2019-09-09 05:34:22,268 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [14], [16], [19], [21], [23], [25], [29], [37], [50], [53], [55], [61], [62], [63], [65] [2019-09-09 05:34:22,304 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 05:34:22,305 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 05:34:22,384 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 05:34:22,386 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 24 variables. [2019-09-09 05:34:22,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 05:34:22,391 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 05:34:22,454 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 77.5% of their original sizes. [2019-09-09 05:34:22,454 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 05:34:22,464 INFO L420 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2019-09-09 05:34:22,465 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 05:34:22,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 05:34:22,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2019-09-09 05:34:22,468 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 05:34:22,468 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 05:34:22,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 05:34:22,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:34:22,469 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 4 states. [2019-09-09 05:34:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 05:34:22,471 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-09-09 05:34:22,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 05:34:22,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-09-09 05:34:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 05:34:22,473 INFO L225 Difference]: With dead ends: 7 [2019-09-09 05:34:22,473 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 05:34:22,474 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 05:34:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 05:34:22,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 05:34:22,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 05:34:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 05:34:22,476 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-09-09 05:34:22,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 05:34:22,477 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 05:34:22,477 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 05:34:22,477 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 05:34:22,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 05:34:22,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 05:34:22 BoogieIcfgContainer [2019-09-09 05:34:22,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 05:34:22,487 INFO L168 Benchmark]: Toolchain (without parser) took 1948.05 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 88.4 MB in the beginning and 90.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 64.4 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:22,489 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 133.7 MB. Free memory was 106.8 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-09 05:34:22,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.17 ms. Allocated memory is still 133.7 MB. Free memory was 88.1 MB in the beginning and 78.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:22,494 INFO L168 Benchmark]: Boogie Preprocessor took 112.93 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 78.3 MB in the beginning and 175.8 MB in the end (delta: -97.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:22,495 INFO L168 Benchmark]: RCFGBuilder took 326.94 ms. Allocated memory is still 199.8 MB. Free memory was 175.8 MB in the beginning and 160.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:22,497 INFO L168 Benchmark]: TraceAbstraction took 1255.97 ms. Allocated memory is still 199.8 MB. Free memory was 160.8 MB in the beginning and 90.0 MB in the end (delta: 70.8 MB). Peak memory consumption was 70.8 MB. Max. memory is 7.1 GB. [2019-09-09 05:34:22,506 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 133.7 MB. Free memory was 106.8 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.17 ms. Allocated memory is still 133.7 MB. Free memory was 88.1 MB in the beginning and 78.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.93 ms. Allocated memory was 133.7 MB in the beginning and 199.8 MB in the end (delta: 66.1 MB). Free memory was 78.3 MB in the beginning and 175.8 MB in the end (delta: -97.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 326.94 ms. Allocated memory is still 199.8 MB. Free memory was 175.8 MB in the beginning and 160.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1255.97 ms. Allocated memory is still 199.8 MB. Free memory was 160.8 MB in the beginning and 90.0 MB in the end (delta: 70.8 MB). Peak memory consumption was 70.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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, 27 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 15 SDslu, 32 SDs, 0 SdLazy, 40 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.9642857142857143 AbsIntWeakeningRatio, 0.7619047619047619 AbsIntAvgWeakeningVarsNumRemoved, 1.0476190476190477 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 4395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/7 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...