java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/terminator_02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:49:20,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:49:20,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:49:20,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:49:20,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:49:20,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:49:20,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:49:20,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:49:20,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:49:20,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:49:20,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:49:20,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:49:20,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:49:20,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:49:20,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:49:20,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:49:20,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:49:20,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:49:20,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:49:20,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:49:20,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:49:20,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:49:20,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:49:20,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:49:20,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:49:20,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:49:20,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:49:20,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:49:20,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:49:20,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:49:20,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:49:20,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:49:20,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:49:20,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:49:20,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:49:20,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:49:20,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:49:20,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:49:20,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:49:20,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:49:20,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:49:20,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:49:20,713 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:49:20,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:49:20,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:49:20,717 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:49:20,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:49:20,718 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:49:20,718 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:49:20,718 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:49:20,718 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:49:20,718 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:49:20,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:49:20,719 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:49:20,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:49:20,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:49:20,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:49:20,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:49:20,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:49:20,721 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:49:20,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:49:20,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:49:20,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:49:20,723 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:49:20,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:49:20,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:49:20,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:49:20,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:49:20,724 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:49:20,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:49:20,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:49:20,724 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:49:20,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:49:20,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:49:20,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:49:20,774 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:49:20,774 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:49:20,775 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2019-09-10 01:49:20,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984a2ff9/3cc5a1330fd544d3ae70f2f1d980e413/FLAGc05e4831c [2019-09-10 01:49:21,288 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:49:21,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c [2019-09-10 01:49:21,294 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984a2ff9/3cc5a1330fd544d3ae70f2f1d980e413/FLAGc05e4831c [2019-09-10 01:49:21,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c984a2ff9/3cc5a1330fd544d3ae70f2f1d980e413 [2019-09-10 01:49:21,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:49:21,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:49:21,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:49:21,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:49:21,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:49:21,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:49:21" (1/1) ... [2019-09-10 01:49:21,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374b1c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:21, skipping insertion in model container [2019-09-10 01:49:21,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:49:21" (1/1) ... [2019-09-10 01:49:21,715 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:49:21,729 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:49:21,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:49:21,890 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:49:21,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:49:21,916 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:49:21,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:21 WrapperNode [2019-09-10 01:49:21,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:49:21,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:49:21,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:49:21,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:49:22,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:21" (1/1) ... [2019-09-10 01:49:22,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:21" (1/1) ... [2019-09-10 01:49:22,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:21" (1/1) ... [2019-09-10 01:49:22,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:21" (1/1) ... [2019-09-10 01:49:22,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:21" (1/1) ... [2019-09-10 01:49:22,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:21" (1/1) ... [2019-09-10 01:49:22,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:21" (1/1) ... [2019-09-10 01:49:22,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:49:22,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:49:22,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:49:22,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:49:22,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:49:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:49:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:49:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-10 01:49:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:49:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:49:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 01:49:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-10 01:49:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:49:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 01:49:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:49:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:49:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:49:22,262 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:49:22,262 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-10 01:49:22,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:49:22 BoogieIcfgContainer [2019-09-10 01:49:22,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:49:22,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:49:22,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:49:22,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:49:22,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:49:21" (1/3) ... [2019-09-10 01:49:22,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31004448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:49:22, skipping insertion in model container [2019-09-10 01:49:22,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:49:21" (2/3) ... [2019-09-10 01:49:22,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31004448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:49:22, skipping insertion in model container [2019-09-10 01:49:22,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:49:22" (3/3) ... [2019-09-10 01:49:22,271 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2019-09-10 01:49:22,280 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:49:22,287 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:49:22,304 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:49:22,350 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:49:22,351 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:49:22,351 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:49:22,351 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:49:22,352 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:49:22,352 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:49:22,352 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:49:22,353 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:49:22,375 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-09-10 01:49:22,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:49:22,384 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:22,385 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:22,388 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:22,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:22,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2111920953, now seen corresponding path program 1 times [2019-09-10 01:49:22,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:22,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:22,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:22,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:22,457 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:49:22,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:49:22,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:49:22,530 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:22,533 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:49:22,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:49:22,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:49:22,546 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-09-10 01:49:22,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:22,560 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-09-10 01:49:22,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:49:22,562 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-10 01:49:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:22,571 INFO L225 Difference]: With dead ends: 23 [2019-09-10 01:49:22,571 INFO L226 Difference]: Without dead ends: 16 [2019-09-10 01:49:22,573 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:49:22,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-10 01:49:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-10 01:49:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-10 01:49:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-09-10 01:49:22,609 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2019-09-10 01:49:22,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:22,610 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-09-10 01:49:22,610 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:49:22,610 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-09-10 01:49:22,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 01:49:22,611 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:22,611 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:22,612 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:22,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:22,612 INFO L82 PathProgramCache]: Analyzing trace with hash 2102685743, now seen corresponding path program 1 times [2019-09-10 01:49:22,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:22,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:22,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:22,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:22,614 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:49:22,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:49:22,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 01:49:22,729 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:22,733 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 01:49:22,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 01:49:22,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:49:22,734 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2019-09-10 01:49:22,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:22,847 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-09-10 01:49:22,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 01:49:22,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-09-10 01:49:22,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:22,849 INFO L225 Difference]: With dead ends: 20 [2019-09-10 01:49:22,849 INFO L226 Difference]: Without dead ends: 17 [2019-09-10 01:49:22,850 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-10 01:49:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-10 01:49:22,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-10 01:49:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-10 01:49:22,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-09-10 01:49:22,857 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2019-09-10 01:49:22,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:22,858 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-09-10 01:49:22,858 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 01:49:22,859 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-09-10 01:49:22,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:49:22,860 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:49:22,860 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:49:22,861 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:49:22,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:49:22,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1145559190, now seen corresponding path program 1 times [2019-09-10 01:49:22,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:49:22,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:22,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:49:22,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:49:22,867 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:49:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:49:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 01:49:22,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:49:22,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:49:22,965 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:49:22,966 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:49:22,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:49:22,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:49:22,967 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2019-09-10 01:49:23,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:49:23,002 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-09-10 01:49:23,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:49:23,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-10 01:49:23,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:49:23,003 INFO L225 Difference]: With dead ends: 15 [2019-09-10 01:49:23,004 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:49:23,004 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:49:23,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:49:23,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:49:23,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:49:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:49:23,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-10 01:49:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:49:23,006 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:49:23,006 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:49:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:49:23,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:49:23,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:49:23 BoogieIcfgContainer [2019-09-10 01:49:23,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:49:23,020 INFO L168 Benchmark]: Toolchain (without parser) took 1318.58 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 89.4 MB in the beginning and 124.4 MB in the end (delta: -35.0 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:23,023 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 134.2 MB. Free memory was 107.4 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:49:23,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.80 ms. Allocated memory is still 134.2 MB. Free memory was 89.2 MB in the beginning and 79.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:23,027 INFO L168 Benchmark]: Boogie Preprocessor took 112.23 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 79.8 MB in the beginning and 177.3 MB in the end (delta: -97.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:23,028 INFO L168 Benchmark]: RCFGBuilder took 233.81 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 165.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:23,029 INFO L168 Benchmark]: TraceAbstraction took 751.86 ms. Allocated memory is still 200.8 MB. Free memory was 164.7 MB in the beginning and 124.4 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2019-09-10 01:49:23,037 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 134.2 MB. Free memory was 107.4 MB in the beginning and 107.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 216.80 ms. Allocated memory is still 134.2 MB. Free memory was 89.2 MB in the beginning and 79.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.23 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 79.8 MB in the beginning and 177.3 MB in the end (delta: -97.6 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 233.81 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 165.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 751.86 ms. Allocated memory is still 200.8 MB. Free memory was 164.7 MB in the beginning and 124.4 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 5 SDslu, 71 SDs, 0 SdLazy, 40 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 899 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...