./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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_product47.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01c6094ce00b6bee5e4a1d4107850fe1bcc8c33e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-9a8b2e8 [2020-10-20 01:43:23,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:43:23,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:43:23,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:43:23,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:43:23,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:43:23,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:43:23,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:43:23,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:43:23,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:43:23,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:43:23,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:43:23,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:43:23,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:43:23,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:43:23,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:43:23,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:43:23,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:43:23,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:43:23,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:43:23,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:43:23,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:43:23,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:43:23,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:43:23,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:43:23,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:43:23,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:43:23,873 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:43:23,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:43:23,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:43:23,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:43:23,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:43:23,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:43:23,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:43:23,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:43:23,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:43:23,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:43:23,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:43:23,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:43:23,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:43:23,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:43:23,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:43:23,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:43:23,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:43:23,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:43:23,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:43:23,944 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:43:23,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:43:23,945 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:43:23,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:43:23,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:43:23,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:43:23,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:43:23,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:43:23,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:43:23,948 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:43:23,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:43:23,948 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:43:23,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:43:23,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:43:23,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:43:23,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:43:23,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:43:23,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:43:23,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:43:23,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:43:23,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:43:23,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:43:23,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:43:23,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:43:23,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:43:23,952 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(reach_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 -> 01c6094ce00b6bee5e4a1d4107850fe1bcc8c33e [2020-10-20 01:43:24,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:43:24,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:43:24,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:43:24,204 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:43:24,205 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:43:24,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c [2020-10-20 01:43:24,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94e61e9e/77921dfebf124347bce2e6d9140b5e80/FLAG9a5148d21 [2020-10-20 01:43:24,808 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:43:24,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product47.cil.c [2020-10-20 01:43:24,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94e61e9e/77921dfebf124347bce2e6d9140b5e80/FLAG9a5148d21 [2020-10-20 01:43:25,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94e61e9e/77921dfebf124347bce2e6d9140b5e80 [2020-10-20 01:43:25,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:43:25,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:43:25,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:43:25,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:43:25,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:43:25,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:43:25" (1/1) ... [2020-10-20 01:43:25,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64254a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25, skipping insertion in model container [2020-10-20 01:43:25,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:43:25" (1/1) ... [2020-10-20 01:43:25,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:43:25,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:43:25,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:43:25,685 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:43:25,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:43:25,834 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:43:25,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25 WrapperNode [2020-10-20 01:43:25,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:43:25,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:43:25,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:43:25,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:43:25,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25" (1/1) ... [2020-10-20 01:43:25,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25" (1/1) ... [2020-10-20 01:43:25,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:43:25,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:43:25,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:43:25,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:43:25,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25" (1/1) ... [2020-10-20 01:43:25,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25" (1/1) ... [2020-10-20 01:43:25,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25" (1/1) ... [2020-10-20 01:43:25,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25" (1/1) ... [2020-10-20 01:43:25,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25" (1/1) ... [2020-10-20 01:43:25,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25" (1/1) ... [2020-10-20 01:43:25,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25" (1/1) ... [2020-10-20 01:43:25,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:43:25,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:43:25,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:43:25,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:43:25,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25" (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 [2020-10-20 01:43:26,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:43:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:43:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:43:26,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:43:27,242 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:43:27,242 INFO L298 CfgBuilder]: Removed 208 assume(true) statements. [2020-10-20 01:43:27,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:27 BoogieIcfgContainer [2020-10-20 01:43:27,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:43:27,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:43:27,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:43:27,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:43:27,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:43:25" (1/3) ... [2020-10-20 01:43:27,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b986604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:43:27, skipping insertion in model container [2020-10-20 01:43:27,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:25" (2/3) ... [2020-10-20 01:43:27,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b986604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:43:27, skipping insertion in model container [2020-10-20 01:43:27,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:27" (3/3) ... [2020-10-20 01:43:27,260 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product47.cil.c [2020-10-20 01:43:27,273 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:43:27,281 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:43:27,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:43:27,329 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:43:27,329 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:43:27,330 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:43:27,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:43:27,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:43:27,333 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:43:27,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:43:27,333 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:43:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states. [2020-10-20 01:43:27,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 01:43:27,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:27,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:43:27,365 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:27,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:27,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1980071850, now seen corresponding path program 1 times [2020-10-20 01:43:27,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:27,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415584061] [2020-10-20 01:43:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:43:27,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415584061] [2020-10-20 01:43:27,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:27,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:43:27,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708305815] [2020-10-20 01:43:27,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:43:27,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:27,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:43:27,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:43:27,687 INFO L87 Difference]: Start difference. First operand 140 states. Second operand 2 states. [2020-10-20 01:43:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:27,726 INFO L93 Difference]: Finished difference Result 271 states and 404 transitions. [2020-10-20 01:43:27,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:43:27,727 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-10-20 01:43:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:27,741 INFO L225 Difference]: With dead ends: 271 [2020-10-20 01:43:27,741 INFO L226 Difference]: Without dead ends: 133 [2020-10-20 01:43:27,745 INFO L677 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 [2020-10-20 01:43:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-20 01:43:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2020-10-20 01:43:27,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-20 01:43:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 192 transitions. [2020-10-20 01:43:27,797 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 192 transitions. Word has length 18 [2020-10-20 01:43:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:27,797 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 192 transitions. [2020-10-20 01:43:27,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:43:27,798 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 192 transitions. [2020-10-20 01:43:27,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 01:43:27,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:27,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:43:27,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:43:27,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:27,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:27,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1403864693, now seen corresponding path program 1 times [2020-10-20 01:43:27,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:27,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140189251] [2020-10-20 01:43:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:43:27,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140189251] [2020-10-20 01:43:27,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:27,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:43:27,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699293444] [2020-10-20 01:43:27,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:43:27,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:27,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:43:27,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:27,947 INFO L87 Difference]: Start difference. First operand 133 states and 192 transitions. Second operand 3 states. [2020-10-20 01:43:27,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:27,962 INFO L93 Difference]: Finished difference Result 133 states and 192 transitions. [2020-10-20 01:43:27,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:43:27,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-20 01:43:27,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:27,964 INFO L225 Difference]: With dead ends: 133 [2020-10-20 01:43:27,964 INFO L226 Difference]: Without dead ends: 55 [2020-10-20 01:43:27,965 INFO L677 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 [2020-10-20 01:43:27,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-20 01:43:27,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-20 01:43:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-20 01:43:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 79 transitions. [2020-10-20 01:43:27,972 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 79 transitions. Word has length 19 [2020-10-20 01:43:27,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:27,973 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 79 transitions. [2020-10-20 01:43:27,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:43:27,973 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 79 transitions. [2020-10-20 01:43:27,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:43:27,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:27,974 INFO L422 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] [2020-10-20 01:43:27,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:43:27,974 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:27,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:27,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1636802596, now seen corresponding path program 1 times [2020-10-20 01:43:27,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:27,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045645101] [2020-10-20 01:43:27,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:43:28,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045645101] [2020-10-20 01:43:28,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:28,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:43:28,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40264622] [2020-10-20 01:43:28,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:43:28,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:28,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:43:28,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:28,062 INFO L87 Difference]: Start difference. First operand 55 states and 79 transitions. Second operand 3 states. [2020-10-20 01:43:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:28,081 INFO L93 Difference]: Finished difference Result 153 states and 225 transitions. [2020-10-20 01:43:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:43:28,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-20 01:43:28,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:28,083 INFO L225 Difference]: With dead ends: 153 [2020-10-20 01:43:28,083 INFO L226 Difference]: Without dead ends: 104 [2020-10-20 01:43:28,084 INFO L677 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 [2020-10-20 01:43:28,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-20 01:43:28,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2020-10-20 01:43:28,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-20 01:43:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 147 transitions. [2020-10-20 01:43:28,103 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 147 transitions. Word has length 24 [2020-10-20 01:43:28,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:28,104 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 147 transitions. [2020-10-20 01:43:28,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:43:28,104 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 147 transitions. [2020-10-20 01:43:28,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:43:28,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:28,105 INFO L422 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] [2020-10-20 01:43:28,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:43:28,106 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:28,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:28,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1444892134, now seen corresponding path program 1 times [2020-10-20 01:43:28,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:28,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999280883] [2020-10-20 01:43:28,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:43:28,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999280883] [2020-10-20 01:43:28,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:28,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:43:28,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260564202] [2020-10-20 01:43:28,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:43:28,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:28,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:43:28,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:28,174 INFO L87 Difference]: Start difference. First operand 100 states and 147 transitions. Second operand 3 states. [2020-10-20 01:43:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:28,249 INFO L93 Difference]: Finished difference Result 239 states and 356 transitions. [2020-10-20 01:43:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:43:28,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-20 01:43:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:28,252 INFO L225 Difference]: With dead ends: 239 [2020-10-20 01:43:28,252 INFO L226 Difference]: Without dead ends: 145 [2020-10-20 01:43:28,253 INFO L677 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 [2020-10-20 01:43:28,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-20 01:43:28,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-10-20 01:43:28,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-20 01:43:28,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 207 transitions. [2020-10-20 01:43:28,269 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 207 transitions. Word has length 26 [2020-10-20 01:43:28,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:28,269 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 207 transitions. [2020-10-20 01:43:28,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:43:28,270 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 207 transitions. [2020-10-20 01:43:28,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 01:43:28,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:28,271 INFO L422 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] [2020-10-20 01:43:28,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:43:28,271 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:28,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:28,272 INFO L82 PathProgramCache]: Analyzing trace with hash 266687089, now seen corresponding path program 1 times [2020-10-20 01:43:28,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:28,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662338726] [2020-10-20 01:43:28,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:43:28,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662338726] [2020-10-20 01:43:28,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:28,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:43:28,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903125295] [2020-10-20 01:43:28,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:43:28,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:28,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:43:28,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:43:28,368 INFO L87 Difference]: Start difference. First operand 143 states and 207 transitions. Second operand 5 states. [2020-10-20 01:43:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:28,554 INFO L93 Difference]: Finished difference Result 757 states and 1113 transitions. [2020-10-20 01:43:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:43:28,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-20 01:43:28,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:28,560 INFO L225 Difference]: With dead ends: 757 [2020-10-20 01:43:28,560 INFO L226 Difference]: Without dead ends: 620 [2020-10-20 01:43:28,562 INFO L677 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 [2020-10-20 01:43:28,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2020-10-20 01:43:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 240. [2020-10-20 01:43:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-20 01:43:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 338 transitions. [2020-10-20 01:43:28,596 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 338 transitions. Word has length 27 [2020-10-20 01:43:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:28,597 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 338 transitions. [2020-10-20 01:43:28,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:43:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 338 transitions. [2020-10-20 01:43:28,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 01:43:28,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:28,599 INFO L422 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] [2020-10-20 01:43:28,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:43:28,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:28,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:28,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1433576653, now seen corresponding path program 1 times [2020-10-20 01:43:28,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:28,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796492728] [2020-10-20 01:43:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:43:28,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:43:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:43:28,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:43:28,844 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:43:28,844 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:43:28,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:43:28,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:43:28 BoogieIcfgContainer [2020-10-20 01:43:28,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:43:28,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:43:28,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:43:28,963 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:43:28,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:27" (3/4) ... [2020-10-20 01:43:28,966 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:43:29,092 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:43:29,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:43:29,095 INFO L168 Benchmark]: Toolchain (without parser) took 3963.66 ms. Allocated memory was 36.7 MB in the beginning and 67.1 MB in the end (delta: 30.4 MB). Free memory was 19.4 MB in the beginning and 43.6 MB in the end (delta: -24.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:29,096 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 34.6 MB. Free memory was 12.9 MB in the beginning and 12.9 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:43:29,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.27 ms. Allocated memory was 36.7 MB in the beginning and 45.6 MB in the end (delta: 8.9 MB). Free memory was 18.5 MB in the beginning and 27.9 MB in the end (delta: -9.5 MB). Peak memory consumption was 17.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:29,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.11 ms. Allocated memory is still 45.6 MB. Free memory was 27.9 MB in the beginning and 23.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:29,098 INFO L168 Benchmark]: Boogie Preprocessor took 61.10 ms. Allocated memory is still 45.6 MB. Free memory was 23.6 MB in the beginning and 20.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:29,098 INFO L168 Benchmark]: RCFGBuilder took 1268.82 ms. Allocated memory was 45.6 MB in the beginning and 53.0 MB in the end (delta: 7.3 MB). Free memory was 20.3 MB in the beginning and 28.0 MB in the end (delta: -7.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:29,099 INFO L168 Benchmark]: TraceAbstraction took 1710.68 ms. Allocated memory was 53.0 MB in the beginning and 62.4 MB in the end (delta: 9.4 MB). Free memory was 27.6 MB in the beginning and 21.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 27.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:29,100 INFO L168 Benchmark]: Witness Printer took 131.16 ms. Allocated memory was 62.4 MB in the beginning and 67.1 MB in the end (delta: 4.7 MB). Free memory was 21.6 MB in the beginning and 43.6 MB in the end (delta: -21.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:29,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 34.6 MB. Free memory was 12.9 MB in the beginning and 12.9 MB in the end (delta: 47.6 kB). Peak memory consumption was 47.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 698.27 ms. Allocated memory was 36.7 MB in the beginning and 45.6 MB in the end (delta: 8.9 MB). Free memory was 18.5 MB in the beginning and 27.9 MB in the end (delta: -9.5 MB). Peak memory consumption was 17.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 81.11 ms. Allocated memory is still 45.6 MB. Free memory was 27.9 MB in the beginning and 23.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 61.10 ms. Allocated memory is still 45.6 MB. Free memory was 23.6 MB in the beginning and 20.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1268.82 ms. Allocated memory was 45.6 MB in the beginning and 53.0 MB in the end (delta: 7.3 MB). Free memory was 20.3 MB in the beginning and 28.0 MB in the end (delta: -7.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1710.68 ms. Allocated memory was 53.0 MB in the beginning and 62.4 MB in the end (delta: 9.4 MB). Free memory was 27.6 MB in the beginning and 21.6 MB in the end (delta: 6.0 MB). Peak memory consumption was 27.7 MB. Max. memory is 14.3 GB. * Witness Printer took 131.16 ms. Allocated memory was 62.4 MB in the beginning and 67.1 MB in the end (delta: 4.7 MB). Free memory was 21.6 MB in the beginning and 43.6 MB in the end (delta: -21.9 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] int cleanupTimeShifts = 4; [L359] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L631] int pumpRunning = 0; [L632] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L132] int retValue_acc ; [L133] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L181] int retValue_acc ; [L184] retValue_acc = 1 [L185] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L139] tmp = valid_product() [L141] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L558] int splverifierCounter ; [L559] int tmp ; [L560] int tmp___0 ; [L561] int tmp___1 ; [L562] int tmp___2 ; [L565] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L567] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L569] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L575] tmp = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L585] tmp___0 = __VERIFIER_nondet_int() [L587] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L595] tmp___2 = __VERIFIER_nondet_int() [L597] COND FALSE !(\read(tmp___2)) [L601] tmp___1 = __VERIFIER_nondet_int() [L603] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L830] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L837] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L639] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L646] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L938] int tmp ; [L939] int tmp___0 ; [L940] int tmp___1 ; [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L944] tmp = isMethaneLevelCritical() [L946] COND FALSE !(\read(tmp)) [L914] int retValue_acc ; [L917] retValue_acc = waterLevel [L918] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L950] tmp___0 = getWaterLevel() [L952] COND TRUE tmp___0 == 2 [L763] int retValue_acc ; [L766] retValue_acc = pumpRunning [L767] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L954] tmp___1 = isPumpRunning() [L956] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L3] __assert_fail("0", "minepump_spec3_product47.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 140 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 559 SDtfs, 497 SDslu, 431 SDs, 0 SdLazy, 63 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=5, 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, 386 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 5251 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...