java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:49,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:49,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:49,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:29:49,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:29:49,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:29:49,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:29:49,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:29:49,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:29:49,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:29:49,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:29:49,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:29:49,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:49,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:49,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:49,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:49,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:49,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:49,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:49,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:49,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:49,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:49,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:49,590 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:49,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:29:49,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:49,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:49,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:49,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:49,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:49,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:49,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:49,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:49,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:49,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:49,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:49,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 16:29:49,629 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:49,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:49,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:49,630 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:49,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:49,631 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:49,631 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:49,631 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:49,631 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:49,632 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:49,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:49,633 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:49,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:49,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:49,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:49,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:49,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:49,634 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:49,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:49,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:49,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:49,635 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:49,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:49,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:49,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:49,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:49,636 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:49,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:49,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:49,637 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:49,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:49,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:49,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:49,683 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:49,683 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:49,684 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i [2019-10-02 16:29:49,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faac23961/f76a60397bf94f67b98e9d012ab9c405/FLAG329abcbf8 [2019-10-02 16:29:50,231 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:50,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy2_ground-2.i [2019-10-02 16:29:50,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faac23961/f76a60397bf94f67b98e9d012ab9c405/FLAG329abcbf8 [2019-10-02 16:29:50,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faac23961/f76a60397bf94f67b98e9d012ab9c405 [2019-10-02 16:29:50,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:50,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:50,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:50,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:50,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:50,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb1ed1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50, skipping insertion in model container [2019-10-02 16:29:50,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,621 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:50,637 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:50,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:50,837 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:50,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:50,873 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:50,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50 WrapperNode [2019-10-02 16:29:50,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:50,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:50,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:50,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:50,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:50,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:51,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:51,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:51,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... [2019-10-02 16:29:51,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:51,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:51,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:51,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:51,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:51,379 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:51,380 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-02 16:29:51,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:51 BoogieIcfgContainer [2019-10-02 16:29:51,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:51,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:51,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:51,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:51,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:50" (1/3) ... [2019-10-02 16:29:51,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1171ce65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:51, skipping insertion in model container [2019-10-02 16:29:51,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:50" (2/3) ... [2019-10-02 16:29:51,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1171ce65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:51, skipping insertion in model container [2019-10-02 16:29:51,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:51" (3/3) ... [2019-10-02 16:29:51,388 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy2_ground-2.i [2019-10-02 16:29:51,398 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:51,411 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:51,428 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:51,455 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:51,455 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:51,455 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:51,456 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:51,456 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:51,456 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:51,456 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:51,456 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:51,469 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-10-02 16:29:51,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-02 16:29:51,478 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:51,478 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:51,480 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:51,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,485 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2019-10-02 16:29:51,487 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:51,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:51,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,537 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:51,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:51,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:51,629 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:51,633 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:51,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:51,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:51,650 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2019-10-02 16:29:51,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:51,670 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2019-10-02 16:29:51,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:51,671 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-02 16:29:51,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:51,681 INFO L225 Difference]: With dead ends: 30 [2019-10-02 16:29:51,681 INFO L226 Difference]: Without dead ends: 25 [2019-10-02 16:29:51,683 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-02 16:29:51,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-02 16:29:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-02 16:29:51,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-02 16:29:51,727 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-10-02 16:29:51,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:51,728 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-02 16:29:51,728 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:51,728 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-02 16:29:51,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-02 16:29:51,729 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:51,730 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:51,730 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:51,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1687882214, now seen corresponding path program 1 times [2019-10-02 16:29:51,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:51,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:51,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,733 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:29:51,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:51,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:51,807 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:51,808 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:51,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:51,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:51,809 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 3 states. [2019-10-02 16:29:51,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:51,827 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-10-02 16:29:51,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:51,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-02 16:29:51,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:51,829 INFO L225 Difference]: With dead ends: 27 [2019-10-02 16:29:51,829 INFO L226 Difference]: Without dead ends: 27 [2019-10-02 16:29:51,830 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:51,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-02 16:29:51,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-10-02 16:29:51,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-02 16:29:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-10-02 16:29:51,836 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2019-10-02 16:29:51,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:51,837 INFO L475 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-10-02 16:29:51,837 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:51,837 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-10-02 16:29:51,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-02 16:29:51,838 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:51,838 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:51,839 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:51,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1114616120, now seen corresponding path program 1 times [2019-10-02 16:29:51,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:51,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:51,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,842 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:51,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:51,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:51,915 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:51,916 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:51,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:51,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:51,917 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 3 states. [2019-10-02 16:29:51,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:51,951 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2019-10-02 16:29:51,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:51,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-02 16:29:51,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:51,954 INFO L225 Difference]: With dead ends: 30 [2019-10-02 16:29:51,954 INFO L226 Difference]: Without dead ends: 30 [2019-10-02 16:29:51,955 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-02 16:29:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2019-10-02 16:29:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-02 16:29:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-10-02 16:29:51,960 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 19 [2019-10-02 16:29:51,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:51,961 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-10-02 16:29:51,961 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:51,961 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-10-02 16:29:51,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-02 16:29:51,962 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:51,963 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] [2019-10-02 16:29:51,963 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:51,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:51,964 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2019-10-02 16:29:51,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:51,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:51,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:51,967 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-02 16:29:52,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:52,050 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:52,051 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-10-02 16:29:52,054 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [29], [33], [39], [41], [43], [47], [55], [65], [68], [70], [76], [77], [78], [80] [2019-10-02 16:29:52,110 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:52,111 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:52,214 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:52,217 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 29 variables. [2019-10-02 16:29:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:52,221 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:52,278 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:29:52,278 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:52,285 INFO L420 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-10-02 16:29:52,286 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:52,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:52,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:29:52,287 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:52,288 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:52,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:52,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:52,289 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 2 states. [2019-10-02 16:29:52,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:52,290 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:29:52,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:52,291 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-10-02 16:29:52,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:52,291 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:29:52,291 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:52,292 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:52,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:52,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:52,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:52,294 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-10-02 16:29:52,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:52,295 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:52,296 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:52,296 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:52,296 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:52,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:52 BoogieIcfgContainer [2019-10-02 16:29:52,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:52,306 INFO L168 Benchmark]: Toolchain (without parser) took 1699.22 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 88.1 MB in the beginning and 112.7 MB in the end (delta: -24.6 MB). Peak memory consumption was 35.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,308 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.61 ms. Allocated memory is still 140.0 MB. Free memory was 87.9 MB in the beginning and 77.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,314 INFO L168 Benchmark]: Boogie Preprocessor took 138.43 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 77.8 MB in the beginning and 176.6 MB in the end (delta: -98.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,315 INFO L168 Benchmark]: RCFGBuilder took 367.99 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 160.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,318 INFO L168 Benchmark]: TraceAbstraction took 920.49 ms. Allocated memory is still 199.8 MB. Free memory was 160.3 MB in the beginning and 112.7 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:52,328 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 140.0 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.61 ms. Allocated memory is still 140.0 MB. Free memory was 87.9 MB in the beginning and 77.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.43 ms. Allocated memory was 140.0 MB in the beginning and 199.8 MB in the end (delta: 59.8 MB). Free memory was 77.8 MB in the beginning and 176.6 MB in the end (delta: -98.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 367.99 ms. Allocated memory is still 199.8 MB. Free memory was 176.6 MB in the beginning and 160.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 920.49 ms. Allocated memory is still 199.8 MB. Free memory was 160.3 MB in the beginning and 112.7 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 88 SDtfs, 3 SDslu, 44 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 0.9204545454545454 AbsIntWeakeningRatio, 0.9545454545454546 AbsIntAvgWeakeningVarsNumRemoved, 0.2727272727272727 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 1520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...