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+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:59:05,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:59:05,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:59:05,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:59:05,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:59:05,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:59:05,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:59:05,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:59:05,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:59:05,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:59:05,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:59:05,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:59:05,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:59:05,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:59:05,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:59:05,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:59:05,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:59:05,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:59:05,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:59:05,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:59:05,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:59:05,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:59:05,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:59:05,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:59:05,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:59:05,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:59:05,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:59:05,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:59:05,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:59:05,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:59:05,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:59:05,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:59:05,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:59:05,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:59:05,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:59:05,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:59:05,847 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 [2019-09-03 20:59:05,862 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:59:05,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:59:05,862 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:59:05,863 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:59:05,863 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:59:05,863 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:59:05,864 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:59:05,864 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:59:05,864 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:59:05,864 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:59:05,865 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:59:05,865 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:59:05,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:59:05,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:59:05,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:59:05,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:59:05,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:59:05,866 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:59:05,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:59:05,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:59:05,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:59:05,867 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:59:05,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:59:05,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:59:05,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:59:05,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:59:05,868 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:59:05,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:59:05,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:59:05,869 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:59:05,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:59:05,921 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:59:05,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:59:05,925 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:59:05,926 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:59:05,926 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2019-09-03 20:59:05,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114473f7d/5a0973ba247d4b529350c9b38f5dcc11/FLAG43ece6d7e [2019-09-03 20:59:06,389 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:59:06,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+cfa-reducer.c [2019-09-03 20:59:06,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114473f7d/5a0973ba247d4b529350c9b38f5dcc11/FLAG43ece6d7e [2019-09-03 20:59:06,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/114473f7d/5a0973ba247d4b529350c9b38f5dcc11 [2019-09-03 20:59:06,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:59:06,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:59:06,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:59:06,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:59:06,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:59:06,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:59:06" (1/1) ... [2019-09-03 20:59:06,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1615c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:06, skipping insertion in model container [2019-09-03 20:59:06,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:59:06" (1/1) ... [2019-09-03 20:59:06,783 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:59:06,810 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:59:07,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:59:07,193 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:59:07,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:59:07,286 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:59:07,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:07 WrapperNode [2019-09-03 20:59:07,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:59:07,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:59:07,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:59:07,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:59:07,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:07" (1/1) ... [2019-09-03 20:59:07,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:07" (1/1) ... [2019-09-03 20:59:07,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:07" (1/1) ... [2019-09-03 20:59:07,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:07" (1/1) ... [2019-09-03 20:59:07,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:07" (1/1) ... [2019-09-03 20:59:07,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:07" (1/1) ... [2019-09-03 20:59:07,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:07" (1/1) ... [2019-09-03 20:59:07,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:59:07,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:59:07,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:59:07,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:59:07,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:07" (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 [2019-09-03 20:59:07,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:59:07,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:59:07,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:59:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:59:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-09-03 20:59:07,439 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-09-03 20:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 20:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 20:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-03 20:59:07,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-03 20:59:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 20:59:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:59:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:59:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 20:59:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-03 20:59:08,298 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:59:08,298 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-03 20:59:08,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:59:08 BoogieIcfgContainer [2019-09-03 20:59:08,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:59:08,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:59:08,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:59:08,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:59:08,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:59:06" (1/3) ... [2019-09-03 20:59:08,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c60064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:59:08, skipping insertion in model container [2019-09-03 20:59:08,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:59:07" (2/3) ... [2019-09-03 20:59:08,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c60064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:59:08, skipping insertion in model container [2019-09-03 20:59:08,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:59:08" (3/3) ... [2019-09-03 20:59:08,311 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+cfa-reducer.c [2019-09-03 20:59:08,322 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:59:08,333 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:59:08,352 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:59:08,379 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:59:08,379 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:59:08,379 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:59:08,379 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:59:08,380 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:59:08,380 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:59:08,380 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:59:08,380 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:59:08,395 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-03 20:59:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 20:59:08,406 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:59:08,407 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:59:08,409 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:59:08,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:59:08,416 INFO L82 PathProgramCache]: Analyzing trace with hash 316900320, now seen corresponding path program 1 times [2019-09-03 20:59:08,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:59:08,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:08,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:59:08,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:08,469 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:59:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:59:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:59:08,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:59:08,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-03 20:59:08,764 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:59:08,769 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-03 20:59:08,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-03 20:59:08,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 20:59:08,788 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-09-03 20:59:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:59:08,873 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-09-03 20:59:08,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-03 20:59:08,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-09-03 20:59:08,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:59:08,884 INFO L225 Difference]: With dead ends: 34 [2019-09-03 20:59:08,885 INFO L226 Difference]: Without dead ends: 24 [2019-09-03 20:59:08,887 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:59:08,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-03 20:59:08,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2019-09-03 20:59:08,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-03 20:59:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-09-03 20:59:08,918 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2019-09-03 20:59:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:59:08,918 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-09-03 20:59:08,918 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-03 20:59:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-09-03 20:59:08,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-03 20:59:08,919 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:59:08,919 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:59:08,920 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:59:08,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:59:08,920 INFO L82 PathProgramCache]: Analyzing trace with hash 316483246, now seen corresponding path program 1 times [2019-09-03 20:59:08,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:59:08,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:08,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:59:08,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:08,922 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:59:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:59:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:59:09,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:59:09,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-03 20:59:09,042 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:59:09,044 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-03 20:59:09,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-03 20:59:09,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-03 20:59:09,045 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2019-09-03 20:59:09,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:59:09,081 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-09-03 20:59:09,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:59:09,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-09-03 20:59:09,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:59:09,083 INFO L225 Difference]: With dead ends: 26 [2019-09-03 20:59:09,084 INFO L226 Difference]: Without dead ends: 26 [2019-09-03 20:59:09,085 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:59:09,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-03 20:59:09,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2019-09-03 20:59:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-03 20:59:09,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-09-03 20:59:09,092 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2019-09-03 20:59:09,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:59:09,092 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-09-03 20:59:09,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-03 20:59:09,093 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-09-03 20:59:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-03 20:59:09,094 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:59:09,094 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:59:09,095 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:59:09,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:59:09,095 INFO L82 PathProgramCache]: Analyzing trace with hash 625969832, now seen corresponding path program 1 times [2019-09-03 20:59:09,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:59:09,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:09,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:59:09,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:59:09,098 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:59:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:59:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:59:09,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:59:09,267 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-03 20:59:09,268 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-03 20:59:09,270 INFO L207 CegarAbsIntRunner]: [0], [4], [6], [9], [12], [14], [17], [18], [20], [23], [26], [30], [31], [35], [36], [37] [2019-09-03 20:59:09,332 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 20:59:09,332 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 20:59:09,397 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-03 20:59:09,398 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 32 variables. [2019-09-03 20:59:09,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:59:09,402 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-03 20:59:09,432 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-03 20:59:09,432 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-03 20:59:09,433 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-09-03 20:59:09,434 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-03 20:59:09,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:59:09,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-09-03 20:59:09,435 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:59:09,435 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:59:09,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:59:09,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:59:09,436 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 2 states. [2019-09-03 20:59:09,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:59:09,436 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-03 20:59:09,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:59:09,437 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-03 20:59:09,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:59:09,437 INFO L225 Difference]: With dead ends: 2 [2019-09-03 20:59:09,437 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:59:09,438 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:59:09,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:59:09,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:59:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:59:09,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:59:09,439 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-09-03 20:59:09,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:59:09,439 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:59:09,439 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:59:09,439 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:59:09,439 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:59:09,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:59:09 BoogieIcfgContainer [2019-09-03 20:59:09,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:59:09,447 INFO L168 Benchmark]: Toolchain (without parser) took 2680.93 ms. Allocated memory was 134.2 MB in the beginning and 227.5 MB in the end (delta: 93.3 MB). Free memory was 88.9 MB in the beginning and 138.8 MB in the end (delta: -49.9 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:59:09,448 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 134.2 MB. Free memory was 108.3 MB in the beginning and 108.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:59:09,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.29 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 88.7 MB in the beginning and 170.5 MB in the end (delta: -81.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:59:09,450 INFO L168 Benchmark]: Boogie Preprocessor took 81.77 ms. Allocated memory is still 200.8 MB. Free memory was 170.5 MB in the beginning and 166.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:59:09,451 INFO L168 Benchmark]: RCFGBuilder took 927.20 ms. Allocated memory is still 200.8 MB. Free memory was 166.3 MB in the beginning and 94.8 MB in the end (delta: 71.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2019-09-03 20:59:09,452 INFO L168 Benchmark]: TraceAbstraction took 1142.93 ms. Allocated memory was 200.8 MB in the beginning and 227.5 MB in the end (delta: 26.7 MB). Free memory was 94.2 MB in the beginning and 138.8 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-03 20:59:09,456 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 108.3 MB in the beginning and 108.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 521.29 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 88.7 MB in the beginning and 170.5 MB in the end (delta: -81.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.77 ms. Allocated memory is still 200.8 MB. Free memory was 170.5 MB in the beginning and 166.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 927.20 ms. Allocated memory is still 200.8 MB. Free memory was 166.3 MB in the beginning and 94.8 MB in the end (delta: 71.5 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1142.93 ms. Allocated memory was 200.8 MB in the beginning and 227.5 MB in the end (delta: 26.7 MB). Free memory was 94.2 MB in the beginning and 138.8 MB in the end (delta: -44.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 191]: 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, 19 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 32 SDslu, 54 SDs, 0 SdLazy, 22 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, 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, 10.333333333333334 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...