./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bc4bd2595a0b7e3cefae13519551d835632d9ce9 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 21:22:41,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:22:41,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:22:41,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:22:41,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:22:41,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:22:41,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:22:41,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:22:41,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:22:41,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:22:41,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:22:41,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:22:41,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:22:41,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:22:41,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:22:41,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:22:41,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:22:41,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:22:41,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:22:41,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:22:41,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:22:41,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:22:41,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:22:41,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:22:41,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:22:41,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:22:41,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:22:41,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:22:41,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:22:41,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:22:41,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:22:41,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:22:41,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:22:41,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:22:41,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:22:41,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:22:41,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:22:41,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:22:41,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:22:41,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:22:41,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:22:41,765 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 21:22:41,786 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:22:41,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:22:41,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:22:41,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:22:41,789 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 21:22:41,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:22:41,789 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:22:41,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 21:22:41,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:22:41,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:22:41,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:22:41,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:22:41,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:22:41,792 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:22:41,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:22:41,792 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:22:41,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:22:41,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:22:41,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 21:22:41,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:22:41,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 21:22:41,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 21:22:41,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:22:41,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:22:41,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:22:41,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 21:22:41,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 21:22:41,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:22:41,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc4bd2595a0b7e3cefae13519551d835632d9ce9 [2019-11-19 21:22:42,111 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:22:42,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:22:42,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:22:42,135 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:22:42,136 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:22:42,136 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2019-11-19 21:22:42,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2f0e5c51/ed73da81645440538ab165abd6d22972/FLAG7a1b4d886 [2019-11-19 21:22:42,756 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:22:42,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product63.cil.c [2019-11-19 21:22:42,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2f0e5c51/ed73da81645440538ab165abd6d22972/FLAG7a1b4d886 [2019-11-19 21:22:43,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2f0e5c51/ed73da81645440538ab165abd6d22972 [2019-11-19 21:22:43,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:22:43,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:22:43,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:22:43,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:22:43,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:22:43,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:22:43" (1/1) ... [2019-11-19 21:22:43,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5097dbde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43, skipping insertion in model container [2019-11-19 21:22:43,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:22:43" (1/1) ... [2019-11-19 21:22:43,094 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:22:43,150 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:22:43,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:22:43,625 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:22:43,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:22:43,756 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:22:43,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43 WrapperNode [2019-11-19 21:22:43,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:22:43,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:22:43,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:22:43,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:22:43,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43" (1/1) ... [2019-11-19 21:22:43,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43" (1/1) ... [2019-11-19 21:22:43,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:22:43,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:22:43,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:22:43,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:22:43,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43" (1/1) ... [2019-11-19 21:22:43,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43" (1/1) ... [2019-11-19 21:22:43,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43" (1/1) ... [2019-11-19 21:22:43,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43" (1/1) ... [2019-11-19 21:22:43,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43" (1/1) ... [2019-11-19 21:22:43,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43" (1/1) ... [2019-11-19 21:22:43,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43" (1/1) ... [2019-11-19 21:22:43,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:22:43,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:22:43,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:22:43,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:22:43,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43" (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 [2019-11-19 21:22:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 21:22:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-19 21:22:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:22:44,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:22:45,141 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:22:45,142 INFO L285 CfgBuilder]: Removed 358 assume(true) statements. [2019-11-19 21:22:45,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:22:45 BoogieIcfgContainer [2019-11-19 21:22:45,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:22:45,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 21:22:45,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 21:22:45,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 21:22:45,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:22:43" (1/3) ... [2019-11-19 21:22:45,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503084b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:22:45, skipping insertion in model container [2019-11-19 21:22:45,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:22:43" (2/3) ... [2019-11-19 21:22:45,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503084b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:22:45, skipping insertion in model container [2019-11-19 21:22:45,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:22:45" (3/3) ... [2019-11-19 21:22:45,154 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2019-11-19 21:22:45,164 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 21:22:45,175 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-19 21:22:45,187 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-19 21:22:45,223 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 21:22:45,224 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 21:22:45,224 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 21:22:45,224 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 21:22:45,225 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 21:22:45,225 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 21:22:45,225 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 21:22:45,225 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 21:22:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states. [2019-11-19 21:22:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 21:22:45,269 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:22:45,270 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:22:45,271 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:22:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:22:45,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1810150439, now seen corresponding path program 1 times [2019-11-19 21:22:45,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:22:45,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418651991] [2019-11-19 21:22:45,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:22:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:22:45,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:22:45,571 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418651991] [2019-11-19 21:22:45,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:22:45,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 21:22:45,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830674378] [2019-11-19 21:22:45,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-19 21:22:45,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:22:45,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-19 21:22:45,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-19 21:22:45,597 INFO L87 Difference]: Start difference. First operand 233 states. Second operand 2 states. [2019-11-19 21:22:45,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:22:45,662 INFO L93 Difference]: Finished difference Result 460 states and 689 transitions. [2019-11-19 21:22:45,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 21:22:45,665 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-11-19 21:22:45,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:22:45,678 INFO L225 Difference]: With dead ends: 460 [2019-11-19 21:22:45,678 INFO L226 Difference]: Without dead ends: 229 [2019-11-19 21:22:45,682 INFO L630 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 [2019-11-19 21:22:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2019-11-19 21:22:45,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2019-11-19 21:22:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2019-11-19 21:22:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 336 transitions. [2019-11-19 21:22:45,745 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 336 transitions. Word has length 18 [2019-11-19 21:22:45,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:22:45,745 INFO L462 AbstractCegarLoop]: Abstraction has 229 states and 336 transitions. [2019-11-19 21:22:45,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-19 21:22:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 336 transitions. [2019-11-19 21:22:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-19 21:22:45,747 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:22:45,748 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 21:22:45,748 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:22:45,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:22:45,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1201076285, now seen corresponding path program 1 times [2019-11-19 21:22:45,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:22:45,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516831266] [2019-11-19 21:22:45,749 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:22:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:22:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:22:45,873 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516831266] [2019-11-19 21:22:45,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:22:45,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 21:22:45,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210529264] [2019-11-19 21:22:45,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 21:22:45,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:22:45,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 21:22:45,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 21:22:45,877 INFO L87 Difference]: Start difference. First operand 229 states and 336 transitions. Second operand 3 states. [2019-11-19 21:22:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:22:45,904 INFO L93 Difference]: Finished difference Result 229 states and 336 transitions. [2019-11-19 21:22:45,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 21:22:45,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-19 21:22:45,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:22:45,906 INFO L225 Difference]: With dead ends: 229 [2019-11-19 21:22:45,906 INFO L226 Difference]: Without dead ends: 87 [2019-11-19 21:22:45,908 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 21:22:45,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-11-19 21:22:45,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2019-11-19 21:22:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-19 21:22:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 127 transitions. [2019-11-19 21:22:45,918 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 127 transitions. Word has length 19 [2019-11-19 21:22:45,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:22:45,919 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 127 transitions. [2019-11-19 21:22:45,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 21:22:45,919 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 127 transitions. [2019-11-19 21:22:45,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-19 21:22:45,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:22:45,921 INFO L410 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] [2019-11-19 21:22:45,922 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:22:45,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:22:45,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1668670364, now seen corresponding path program 1 times [2019-11-19 21:22:45,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:22:45,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888987665] [2019-11-19 21:22:45,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:22:45,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:22:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:22:46,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888987665] [2019-11-19 21:22:46,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:22:46,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 21:22:46,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532961749] [2019-11-19 21:22:46,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 21:22:46,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:22:46,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 21:22:46,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-19 21:22:46,020 INFO L87 Difference]: Start difference. First operand 87 states and 127 transitions. Second operand 6 states. [2019-11-19 21:22:46,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:22:46,166 INFO L93 Difference]: Finished difference Result 274 states and 406 transitions. [2019-11-19 21:22:46,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 21:22:46,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-19 21:22:46,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:22:46,169 INFO L225 Difference]: With dead ends: 274 [2019-11-19 21:22:46,169 INFO L226 Difference]: Without dead ends: 193 [2019-11-19 21:22:46,170 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-19 21:22:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2019-11-19 21:22:46,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 108. [2019-11-19 21:22:46,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-19 21:22:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 159 transitions. [2019-11-19 21:22:46,188 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 159 transitions. Word has length 24 [2019-11-19 21:22:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:22:46,189 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 159 transitions. [2019-11-19 21:22:46,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 21:22:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 159 transitions. [2019-11-19 21:22:46,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-19 21:22:46,191 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:22:46,191 INFO L410 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] [2019-11-19 21:22:46,192 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:22:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:22:46,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1791027038, now seen corresponding path program 1 times [2019-11-19 21:22:46,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:22:46,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325131854] [2019-11-19 21:22:46,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:22:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:22:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:22:46,273 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325131854] [2019-11-19 21:22:46,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:22:46,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 21:22:46,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897378383] [2019-11-19 21:22:46,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 21:22:46,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:22:46,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 21:22:46,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 21:22:46,276 INFO L87 Difference]: Start difference. First operand 108 states and 159 transitions. Second operand 3 states. [2019-11-19 21:22:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:22:46,336 INFO L93 Difference]: Finished difference Result 218 states and 323 transitions. [2019-11-19 21:22:46,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 21:22:46,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-11-19 21:22:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:22:46,338 INFO L225 Difference]: With dead ends: 218 [2019-11-19 21:22:46,338 INFO L226 Difference]: Without dead ends: 116 [2019-11-19 21:22:46,340 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 21:22:46,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2019-11-19 21:22:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2019-11-19 21:22:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-11-19 21:22:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 162 transitions. [2019-11-19 21:22:46,354 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 162 transitions. Word has length 27 [2019-11-19 21:22:46,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:22:46,355 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 162 transitions. [2019-11-19 21:22:46,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 21:22:46,355 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 162 transitions. [2019-11-19 21:22:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-19 21:22:46,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:22:46,357 INFO L410 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] [2019-11-19 21:22:46,357 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:22:46,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:22:46,358 INFO L82 PathProgramCache]: Analyzing trace with hash 234819321, now seen corresponding path program 1 times [2019-11-19 21:22:46,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:22:46,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659353253] [2019-11-19 21:22:46,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:22:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:22:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:22:46,450 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659353253] [2019-11-19 21:22:46,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 21:22:46,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 21:22:46,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012778823] [2019-11-19 21:22:46,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 21:22:46,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 21:22:46,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 21:22:46,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 21:22:46,453 INFO L87 Difference]: Start difference. First operand 114 states and 162 transitions. Second operand 5 states. [2019-11-19 21:22:46,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 21:22:46,618 INFO L93 Difference]: Finished difference Result 578 states and 838 transitions. [2019-11-19 21:22:46,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 21:22:46,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-11-19 21:22:46,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 21:22:46,622 INFO L225 Difference]: With dead ends: 578 [2019-11-19 21:22:46,622 INFO L226 Difference]: Without dead ends: 470 [2019-11-19 21:22:46,623 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-19 21:22:46,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-11-19 21:22:46,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 183. [2019-11-19 21:22:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2019-11-19 21:22:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 255 transitions. [2019-11-19 21:22:46,670 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 255 transitions. Word has length 27 [2019-11-19 21:22:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 21:22:46,671 INFO L462 AbstractCegarLoop]: Abstraction has 183 states and 255 transitions. [2019-11-19 21:22:46,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 21:22:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 255 transitions. [2019-11-19 21:22:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-19 21:22:46,676 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 21:22:46,676 INFO L410 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] [2019-11-19 21:22:46,676 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 21:22:46,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:22:46,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1465444421, now seen corresponding path program 1 times [2019-11-19 21:22:46,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 21:22:46,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693184170] [2019-11-19 21:22:46,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 21:22:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:22:46,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:22:46,866 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 21:22:46,866 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 21:22:46,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 09:22:46 BoogieIcfgContainer [2019-11-19 21:22:46,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 21:22:46,967 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:22:46,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:22:46,967 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:22:46,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:22:45" (3/4) ... [2019-11-19 21:22:46,970 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 21:22:47,099 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 21:22:47,100 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:22:47,102 INFO L168 Benchmark]: Toolchain (without parser) took 4021.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 956.3 MB in the beginning and 850.8 MB in the end (delta: 105.6 MB). Peak memory consumption was 246.1 MB. Max. memory is 11.5 GB. [2019-11-19 21:22:47,107 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:22:47,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 676.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2019-11-19 21:22:47,109 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-19 21:22:47,110 INFO L168 Benchmark]: Boogie Preprocessor took 103.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:22:47,110 INFO L168 Benchmark]: RCFGBuilder took 1182.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.2 MB). Peak memory consumption was 89.2 MB. Max. memory is 11.5 GB. [2019-11-19 21:22:47,111 INFO L168 Benchmark]: TraceAbstraction took 1821.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 863.8 MB in the end (delta: 150.0 MB). Peak memory consumption was 150.0 MB. Max. memory is 11.5 GB. [2019-11-19 21:22:47,112 INFO L168 Benchmark]: Witness Printer took 133.37 ms. Allocated memory is still 1.2 GB. Free memory was 863.8 MB in the beginning and 850.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2019-11-19 21:22:47,119 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 676.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 99.38 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 103.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1182.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 89.2 MB). Peak memory consumption was 89.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1821.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 863.8 MB in the end (delta: 150.0 MB). Peak memory consumption was 150.0 MB. Max. memory is 11.5 GB. * Witness Printer took 133.37 ms. Allocated memory is still 1.2 GB. Free memory was 863.8 MB in the beginning and 850.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 619]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L188] int pumpRunning = 0; [L189] int systemActive = 1; [L512] int waterLevel = 1; [L513] int methaneLevelCritical = 0; [L827] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L445] int splverifierCounter ; [L446] int tmp ; [L447] int tmp___0 ; [L448] int tmp___1 ; [L449] int tmp___2 ; [L452] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L454] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L456] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L462] tmp = __VERIFIER_nondet_int() [L464] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] COND TRUE waterLevel < 2 [L531] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L472] tmp___0 = __VERIFIER_nondet_int() [L474] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L482] tmp___2 = __VERIFIER_nondet_int() [L484] COND FALSE !(\read(tmp___2)) [L488] tmp___1 = __VERIFIER_nondet_int() [L490] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L432] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L439] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L196] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L203] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L625] int tmp ; [L626] int tmp___0 ; [L627] int tmp___1 ; [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L631] tmp = isMethaneLevelCritical() [L633] COND FALSE !(\read(tmp)) [L583] int retValue_acc ; [L586] retValue_acc = waterLevel [L587] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L637] tmp___0 = getWaterLevel() [L639] COND TRUE tmp___0 == 2 [L346] int retValue_acc ; [L349] retValue_acc = pumpRunning [L350] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L641] tmp___1 = isPumpRunning() [L643] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L619] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 233 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 867 SDtfs, 1048 SDslu, 972 SDs, 0 SdLazy, 89 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 374 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 5641 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...