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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loops/n.c11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:06:07,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:06:07,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:06:07,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:06:07,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:06:07,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:06:07,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:06:07,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:06:07,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:06:07,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:06:07,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:06:07,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:06:07,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:06:07,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:06:07,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:06:07,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:06:07,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:06:07,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:06:07,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:06:07,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:06:07,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:06:07,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:06:07,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:06:07,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:06:07,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:06:07,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:06:07,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:06:07,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:06:07,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:06:07,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:06:07,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:06:07,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:06:07,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:06:07,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:06:07,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:06:07,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:06:07,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:06:07,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:06:07,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:06:07,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:06:07,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:06:07,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:06:07,830 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:06:07,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:06:07,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:06:07,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:06:07,832 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:06:07,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:06:07,832 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:06:07,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:06:07,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:06:07,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:06:07,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:06:07,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:06:07,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:06:07,834 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:06:07,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:06:07,834 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:06:07,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:06:07,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:06:07,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:06:07,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:06:07,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:06:07,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:06:07,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:06:07,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:06:07,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:06:07,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:06:07,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:06:07,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:06:07,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:06:08,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:06:08,192 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:06:08,197 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:06:08,198 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:06:08,198 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:06:08,199 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c [2019-10-15 01:06:08,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7593f3512/285da5f63a594dde8d05d8a7f1844437/FLAG2e8ed5d69 [2019-10-15 01:06:08,697 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:06:08,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c11.c [2019-10-15 01:06:08,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7593f3512/285da5f63a594dde8d05d8a7f1844437/FLAG2e8ed5d69 [2019-10-15 01:06:09,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7593f3512/285da5f63a594dde8d05d8a7f1844437 [2019-10-15 01:06:09,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:06:09,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:06:09,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:09,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:06:09,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:06:09,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:09" (1/1) ... [2019-10-15 01:06:09,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599a6431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:09, skipping insertion in model container [2019-10-15 01:06:09,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:09" (1/1) ... [2019-10-15 01:06:09,124 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:06:09,142 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:06:09,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:09,296 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:06:09,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:09,323 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:06:09,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:09 WrapperNode [2019-10-15 01:06:09,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:09,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:06:09,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:06:09,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:06:09,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:09" (1/1) ... [2019-10-15 01:06:09,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:09" (1/1) ... [2019-10-15 01:06:09,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:09" (1/1) ... [2019-10-15 01:06:09,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:09" (1/1) ... [2019-10-15 01:06:09,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:09" (1/1) ... [2019-10-15 01:06:09,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:09" (1/1) ... [2019-10-15 01:06:09,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:09" (1/1) ... [2019-10-15 01:06:09,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:06:09,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:06:09,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:06:09,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:06:09,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:09" (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 [2019-10-15 01:06:09,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:06:09,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:06:09,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:06:09,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:06:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:06:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:06:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-15 01:06:09,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:06:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:06:09,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:06:09,677 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:06:09,677 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:06:09,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:09 BoogieIcfgContainer [2019-10-15 01:06:09,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:06:09,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:06:09,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:06:09,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:06:09,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:06:09" (1/3) ... [2019-10-15 01:06:09,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216869e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:09, skipping insertion in model container [2019-10-15 01:06:09,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:09" (2/3) ... [2019-10-15 01:06:09,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216869e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:09, skipping insertion in model container [2019-10-15 01:06:09,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:09" (3/3) ... [2019-10-15 01:06:09,687 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c11.c [2019-10-15 01:06:09,695 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:06:09,701 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:06:09,710 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:06:09,732 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:06:09,732 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:06:09,732 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:06:09,732 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:06:09,732 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:06:09,733 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:06:09,733 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:06:09,733 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:06:09,748 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-15 01:06:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:09,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:09,753 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:09,755 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:09,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:09,760 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2019-10-15 01:06:09,766 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:09,767 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994425214] [2019-10-15 01:06:09,767 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:09,767 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:09,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:09,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994425214] [2019-10-15 01:06:09,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:09,854 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:06:09,854 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345878364] [2019-10-15 01:06:09,858 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:06:09,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:09,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:06:09,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:09,875 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2019-10-15 01:06:09,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:09,898 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-10-15 01:06:09,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:06:09,900 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:06:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:09,908 INFO L225 Difference]: With dead ends: 32 [2019-10-15 01:06:09,908 INFO L226 Difference]: Without dead ends: 13 [2019-10-15 01:06:09,912 INFO L600 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 [2019-10-15 01:06:09,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-15 01:06:09,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-15 01:06:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-15 01:06:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-10-15 01:06:09,952 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-10-15 01:06:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:09,952 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-15 01:06:09,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:06:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-10-15 01:06:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:09,954 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:09,954 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:09,954 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:09,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:09,955 INFO L82 PathProgramCache]: Analyzing trace with hash -158041290, now seen corresponding path program 1 times [2019-10-15 01:06:09,955 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:09,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595005732] [2019-10-15 01:06:09,956 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:09,956 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:09,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:10,193 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2019-10-15 01:06:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:10,275 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595005732] [2019-10-15 01:06:10,275 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:10,275 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:06:10,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425985807] [2019-10-15 01:06:10,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:06:10,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:10,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:06:10,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:06:10,280 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2019-10-15 01:06:10,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:10,363 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-10-15 01:06:10,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:06:10,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 01:06:10,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:10,365 INFO L225 Difference]: With dead ends: 27 [2019-10-15 01:06:10,366 INFO L226 Difference]: Without dead ends: 16 [2019-10-15 01:06:10,367 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:06:10,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-15 01:06:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-10-15 01:06:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-15 01:06:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-15 01:06:10,373 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-10-15 01:06:10,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:10,373 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-15 01:06:10,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:06:10,374 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-15 01:06:10,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:06:10,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:10,375 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:10,375 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:10,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:10,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1776138601, now seen corresponding path program 1 times [2019-10-15 01:06:10,376 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:10,377 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544923560] [2019-10-15 01:06:10,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:10,377 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:10,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:10,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:10,535 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544923560] [2019-10-15 01:06:10,535 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92519143] [2019-10-15 01:06:10,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:10,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:06:10,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:10,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:10,724 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:10,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [298617233] [2019-10-15 01:06:10,799 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 14 [2019-10-15 01:06:10,870 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:06:10,870 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:06:10,951 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-15 01:06:11,048 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:06:11,051 INFO L272 AbstractInterpreter]: Visited 13 different actions 69 times. Merged at 4 different actions 28 times. Widened at 1 different actions 5 times. Performed 109 root evaluator evaluations with a maximum evaluation depth of 6. Performed 109 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2019-10-15 01:06:11,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:11,055 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:11,056 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:06:11,056 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2019-10-15 01:06:11,056 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838520920] [2019-10-15 01:06:11,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:06:11,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:11,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:06:11,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:06:11,058 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2019-10-15 01:06:11,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:11,178 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2019-10-15 01:06:11,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:06:11,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 13 [2019-10-15 01:06:11,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:11,180 INFO L225 Difference]: With dead ends: 29 [2019-10-15 01:06:11,180 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:06:11,181 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:06:11,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:06:11,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:06:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:06:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:06:11,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-15 01:06:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:11,183 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:06:11,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:06:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:06:11,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:06:11,384 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:11,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:06:11,474 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 01:06:11,474 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:11,474 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:11,474 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:06:11,475 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:06:11,475 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:06:11,475 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 32) the Hoare annotation is: true [2019-10-15 01:06:11,475 INFO L443 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2019-10-15 01:06:11,475 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 32) no Hoare annotation was computed. [2019-10-15 01:06:11,476 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 22) no Hoare annotation was computed. [2019-10-15 01:06:11,476 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 22) no Hoare annotation was computed. [2019-10-15 01:06:11,476 INFO L439 ceAbstractionStarter]: At program point L19-2(lines 19 27) the Hoare annotation is: (< (mod main_~len~0 4294967296) 5) [2019-10-15 01:06:11,476 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 27) the Hoare annotation is: (< (mod main_~len~0 4294967296) 5) [2019-10-15 01:06:11,476 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 12 32) no Hoare annotation was computed. [2019-10-15 01:06:11,477 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-15 01:06:11,477 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-15 01:06:11,477 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:06:11,491 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-15 01:06:11,491 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-15 01:06:11,491 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:06:11,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:06:11 BoogieIcfgContainer [2019-10-15 01:06:11,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:06:11,507 INFO L168 Benchmark]: Toolchain (without parser) took 2399.18 ms. Allocated memory was 138.9 MB in the beginning and 234.9 MB in the end (delta: 95.9 MB). Free memory was 103.6 MB in the beginning and 203.9 MB in the end (delta: -100.3 MB). Peak memory consumption was 86.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:11,508 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:06:11,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.45 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 94.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:11,510 INFO L168 Benchmark]: Boogie Preprocessor took 123.81 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 94.0 MB in the beginning and 180.6 MB in the end (delta: -86.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:11,511 INFO L168 Benchmark]: RCFGBuilder took 230.03 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 169.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:11,512 INFO L168 Benchmark]: TraceAbstraction took 1825.49 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 169.3 MB in the beginning and 203.9 MB in the end (delta: -34.6 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:11,516 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 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 215.45 ms. Allocated memory is still 138.9 MB. Free memory was 103.4 MB in the beginning and 94.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.81 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 94.0 MB in the beginning and 180.6 MB in the end (delta: -86.6 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.03 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 169.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1825.49 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 169.3 MB in the beginning and 203.9 MB in the end (delta: -34.6 MB). Peak memory consumption was 88.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: len % 4294967296 < 5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 19 SDslu, 64 SDs, 0 SdLazy, 42 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 21 NumberOfFragments, 15 HoareAnnotationTreeSize, 13 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 41 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2148 SizeOfPredicates, 2 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...