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/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:32:06,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:32:06,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:32:06,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:32:06,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:32:06,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:32:06,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:32:06,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:32:06,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:32:06,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:32:06,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:32:06,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:32:06,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:32:06,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:32:06,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:32:06,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:32:06,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:32:06,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:32:06,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:32:06,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:32:06,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:32:06,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:32:06,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:32:06,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:32:06,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-03 02:32:06,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:32:06,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:32:06,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:32:06,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:32:06,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:32:06,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:32:06,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:32:06,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:32:06,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:32:06,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:32:06,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:32:06,678 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 [2019-10-03 02:32:06,692 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:32:06,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:32:06,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:32:06,693 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:32:06,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:32:06,694 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:32:06,694 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:32:06,694 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:32:06,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:32:06,695 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:32:06,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:32:06,696 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:32:06,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:32:06,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:32:06,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:32:06,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:32:06,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:32:06,697 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:32:06,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:32:06,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:32:06,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:32:06,698 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:32:06,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:32:06,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:32:06,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:32:06,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:32:06,699 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:32:06,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:32:06,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:32:06,699 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:32:06,741 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:32:06,758 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:32:06,762 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:32:06,763 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:32:06,764 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:32:06,765 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-10-03 02:32:06,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118b58135/12560b979f214c968d94eb7c4dba628a/FLAGa9c494508 [2019-10-03 02:32:07,371 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:32:07,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-10-03 02:32:07,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118b58135/12560b979f214c968d94eb7c4dba628a/FLAGa9c494508 [2019-10-03 02:32:07,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118b58135/12560b979f214c968d94eb7c4dba628a [2019-10-03 02:32:07,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:32:07,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:32:07,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:32:07,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:32:07,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:32:07,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:32:07" (1/1) ... [2019-10-03 02:32:07,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62225bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:07, skipping insertion in model container [2019-10-03 02:32:07,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:32:07" (1/1) ... [2019-10-03 02:32:07,742 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:32:07,803 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:32:08,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:32:08,254 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:32:08,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:32:08,398 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:32:08,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:08 WrapperNode [2019-10-03 02:32:08,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:32:08,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:32:08,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:32:08,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:32:08,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:08" (1/1) ... [2019-10-03 02:32:08,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:08" (1/1) ... [2019-10-03 02:32:08,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:08" (1/1) ... [2019-10-03 02:32:08,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:08" (1/1) ... [2019-10-03 02:32:08,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:08" (1/1) ... [2019-10-03 02:32:08,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:08" (1/1) ... [2019-10-03 02:32:08,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:08" (1/1) ... [2019-10-03 02:32:08,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:32:08,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:32:08,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:32:08,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:32:08,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:08" (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 [2019-10-03 02:32:08,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:32:08,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:32:08,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:32:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:32:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-10-03 02:32:08,602 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-03 02:32:08,603 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:32:08,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-03 02:32:08,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:32:08,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:32:08,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:32:08,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-03 02:32:08,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:32:08,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:32:08,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:32:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:32:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:32:09,761 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:32:09,762 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-03 02:32:09,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:32:09 BoogieIcfgContainer [2019-10-03 02:32:09,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:32:09,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:32:09,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:32:09,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:32:09,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:32:07" (1/3) ... [2019-10-03 02:32:09,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a42b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:32:09, skipping insertion in model container [2019-10-03 02:32:09,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:32:08" (2/3) ... [2019-10-03 02:32:09,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a42b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:32:09, skipping insertion in model container [2019-10-03 02:32:09,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:32:09" (3/3) ... [2019-10-03 02:32:09,771 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2019-10-03 02:32:09,781 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:32:09,789 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:32:09,805 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:32:09,832 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:32:09,832 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:32:09,832 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:32:09,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:32:09,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:32:09,833 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:32:09,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:32:09,833 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:32:09,849 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-10-03 02:32:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-03 02:32:09,860 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:32:09,861 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:32:09,863 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:32:09,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:32:09,868 INFO L82 PathProgramCache]: Analyzing trace with hash 377540282, now seen corresponding path program 1 times [2019-10-03 02:32:09,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:32:09,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:09,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:32:09,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:09,927 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:32:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:32:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:32:10,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:32:10,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-03 02:32:10,910 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:32:10,917 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-03 02:32:10,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-03 02:32:10,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2019-10-03 02:32:10,940 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 19 states. [2019-10-03 02:32:12,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:32:12,269 INFO L93 Difference]: Finished difference Result 85 states and 107 transitions. [2019-10-03 02:32:12,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-03 02:32:12,271 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2019-10-03 02:32:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:32:12,283 INFO L225 Difference]: With dead ends: 85 [2019-10-03 02:32:12,283 INFO L226 Difference]: Without dead ends: 57 [2019-10-03 02:32:12,285 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2019-10-03 02:32:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-03 02:32:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2019-10-03 02:32:12,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-03 02:32:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2019-10-03 02:32:12,333 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 48 [2019-10-03 02:32:12,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:32:12,334 INFO L475 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2019-10-03 02:32:12,334 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-03 02:32:12,334 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2019-10-03 02:32:12,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-03 02:32:12,336 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:32:12,336 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:32:12,337 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:32:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:32:12,337 INFO L82 PathProgramCache]: Analyzing trace with hash -849330057, now seen corresponding path program 1 times [2019-10-03 02:32:12,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:32:12,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:12,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:32:12,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:32:12,341 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:32:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:32:12,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:32:12,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:32:12,996 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:32:12,997 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 54 with the following transitions: [2019-10-03 02:32:12,999 INFO L207 CegarAbsIntRunner]: [0], [4], [7], [10], [14], [17], [20], [23], [27], [30], [33], [36], [40], [43], [46], [49], [53], [56], [59], [62], [66], [69], [72], [75], [79], [82], [85], [88], [92], [95], [98], [101], [105], [108], [111], [114], [118], [121], [123], [126], [129], [133], [136], [139], [142], [143], [175], [176], [180], [181], [182] [2019-10-03 02:32:13,062 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:32:13,062 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:32:13,168 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:32:13,170 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 47 root evaluator evaluations with a maximum evaluation depth of 0. Performed 47 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 76 variables. [2019-10-03 02:32:13,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:32:13,175 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:32:13,268 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-03 02:32:13,268 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:32:13,271 INFO L420 sIntCurrentIteration]: We unified 52 AI predicates to 52 [2019-10-03 02:32:13,271 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:32:13,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:32:13,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [20] total 20 [2019-10-03 02:32:13,273 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:32:13,274 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:32:13,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:32:13,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:32:13,275 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 2 states. [2019-10-03 02:32:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:32:13,276 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-10-03 02:32:13,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:32:13,276 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 53 [2019-10-03 02:32:13,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:32:13,277 INFO L225 Difference]: With dead ends: 2 [2019-10-03 02:32:13,277 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:32:13,277 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:32:13,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:32:13,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:32:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:32:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:32:13,279 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2019-10-03 02:32:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:32:13,279 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:32:13,279 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:32:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:32:13,280 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:32:13,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:32:13 BoogieIcfgContainer [2019-10-03 02:32:13,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:32:13,288 INFO L168 Benchmark]: Toolchain (without parser) took 5561.77 ms. Allocated memory was 132.1 MB in the beginning and 265.3 MB in the end (delta: 133.2 MB). Free memory was 86.3 MB in the beginning and 222.7 MB in the end (delta: -136.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-03 02:32:13,289 INFO L168 Benchmark]: CDTParser took 1.13 ms. Allocated memory is still 132.1 MB. Free memory is still 104.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-03 02:32:13,290 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.03 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 85.9 MB in the beginning and 164.6 MB in the end (delta: -78.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:13,291 INFO L168 Benchmark]: Boogie Preprocessor took 104.92 ms. Allocated memory is still 199.2 MB. Free memory was 164.6 MB in the beginning and 160.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:13,292 INFO L168 Benchmark]: RCFGBuilder took 1258.28 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 160.0 MB in the beginning and 176.3 MB in the end (delta: -16.3 MB). Peak memory consumption was 92.0 MB. Max. memory is 7.1 GB. [2019-10-03 02:32:13,293 INFO L168 Benchmark]: TraceAbstraction took 3520.88 ms. Allocated memory was 221.8 MB in the beginning and 265.3 MB in the end (delta: 43.5 MB). Free memory was 176.3 MB in the beginning and 222.7 MB in the end (delta: -46.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-03 02:32:13,297 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.13 ms. Allocated memory is still 132.1 MB. Free memory is still 104.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.03 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 85.9 MB in the beginning and 164.6 MB in the end (delta: -78.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.92 ms. Allocated memory is still 199.2 MB. Free memory was 164.6 MB in the beginning and 160.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1258.28 ms. Allocated memory was 199.2 MB in the beginning and 221.8 MB in the end (delta: 22.5 MB). Free memory was 160.0 MB in the beginning and 176.3 MB in the end (delta: -16.3 MB). Peak memory consumption was 92.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3520.88 ms. Allocated memory was 221.8 MB in the beginning and 265.3 MB in the end (delta: 43.5 MB). Free memory was 176.3 MB in the beginning and 222.7 MB in the end (delta: -46.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 465]: 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 3 procedures, 55 locations, 1 error locations. SAFE Result, 3.4s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 93 SDslu, 737 SDs, 0 SdLazy, 743 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 1.0 AbsIntWeakeningRatio, 6.211538461538462 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 34886 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...