./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product59.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_product59.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 064e408d9f8eb6588718dabe79f6e3f439ef5ca6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 01:43:33,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:43:33,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:43:33,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:43:33,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:43:33,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:43:33,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:43:33,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:43:33,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:43:33,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:43:33,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:43:33,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:43:33,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:43:33,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:43:33,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:43:33,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:43:33,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:43:33,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:43:33,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:43:33,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:43:33,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:43:33,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:43:33,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:43:33,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:43:33,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:43:33,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:43:33,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:43:33,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:43:33,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:43:33,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:43:33,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:43:33,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:43:33,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:43:33,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:43:33,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:43:33,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:43:33,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:43:33,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:43:33,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:43:33,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:43:33,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:43:33,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:43:33,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:43:33,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:43:33,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:43:33,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:43:33,203 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:43:33,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:43:33,204 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:43:33,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:43:33,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:43:33,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:43:33,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:43:33,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:43:33,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:43:33,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:43:33,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:43:33,206 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:43:33,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:43:33,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:43:33,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:43:33,208 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:43:33,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:43:33,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:43:33,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:43:33,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:43:33,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:43:33,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:43:33,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:43:33,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:43:33,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:43:33,210 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 -> 064e408d9f8eb6588718dabe79f6e3f439ef5ca6 [2020-10-20 01:43:33,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:43:33,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:43:33,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:43:33,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:43:33,450 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:43:33,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c [2020-10-20 01:43:33,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37201817f/68c38d879a76452ca8ca54ba980ea7d9/FLAGa6eea3bd1 [2020-10-20 01:43:34,026 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:43:34,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product59.cil.c [2020-10-20 01:43:34,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37201817f/68c38d879a76452ca8ca54ba980ea7d9/FLAGa6eea3bd1 [2020-10-20 01:43:34,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37201817f/68c38d879a76452ca8ca54ba980ea7d9 [2020-10-20 01:43:34,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:43:34,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:43:34,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:43:34,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:43:34,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:43:34,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:43:34" (1/1) ... [2020-10-20 01:43:34,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@270843d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34, skipping insertion in model container [2020-10-20 01:43:34,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:43:34" (1/1) ... [2020-10-20 01:43:34,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:43:34,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:43:34,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:43:34,798 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:43:34,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:43:34,944 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:43:34,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34 WrapperNode [2020-10-20 01:43:34,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:43:34,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:43:34,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:43:34,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:43:34,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34" (1/1) ... [2020-10-20 01:43:34,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34" (1/1) ... [2020-10-20 01:43:35,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:43:35,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:43:35,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:43:35,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:43:35,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34" (1/1) ... [2020-10-20 01:43:35,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34" (1/1) ... [2020-10-20 01:43:35,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34" (1/1) ... [2020-10-20 01:43:35,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34" (1/1) ... [2020-10-20 01:43:35,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34" (1/1) ... [2020-10-20 01:43:35,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34" (1/1) ... [2020-10-20 01:43:35,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34" (1/1) ... [2020-10-20 01:43:35,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:43:35,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:43:35,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:43:35,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:43:35,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34" (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 01:43:35,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:43:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:43:35,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:43:35,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:43:36,211 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:43:36,211 INFO L298 CfgBuilder]: Removed 208 assume(true) statements. [2020-10-20 01:43:36,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:36 BoogieIcfgContainer [2020-10-20 01:43:36,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:43:36,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:43:36,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:43:36,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:43:36,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:43:34" (1/3) ... [2020-10-20 01:43:36,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5676dc29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:43:36, skipping insertion in model container [2020-10-20 01:43:36,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:43:34" (2/3) ... [2020-10-20 01:43:36,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5676dc29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:43:36, skipping insertion in model container [2020-10-20 01:43:36,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:36" (3/3) ... [2020-10-20 01:43:36,222 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product59.cil.c [2020-10-20 01:43:36,234 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:43:36,241 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:43:36,255 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:43:36,281 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:43:36,281 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:43:36,282 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:43:36,282 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:43:36,282 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:43:36,282 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:43:36,282 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:43:36,283 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:43:36,303 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-10-20 01:43:36,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 01:43:36,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:36,313 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 01:43:36,313 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:36,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:36,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1113563930, now seen corresponding path program 1 times [2020-10-20 01:43:36,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:36,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143616479] [2020-10-20 01:43:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:36,622 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 01:43:36,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143616479] [2020-10-20 01:43:36,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:36,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:43:36,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770213628] [2020-10-20 01:43:36,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:43:36,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:36,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:43:36,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:43:36,649 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 2 states. [2020-10-20 01:43:36,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:36,687 INFO L93 Difference]: Finished difference Result 283 states and 422 transitions. [2020-10-20 01:43:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:43:36,689 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-10-20 01:43:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:36,702 INFO L225 Difference]: With dead ends: 283 [2020-10-20 01:43:36,703 INFO L226 Difference]: Without dead ends: 139 [2020-10-20 01:43:36,707 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 01:43:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-20 01:43:36,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2020-10-20 01:43:36,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-20 01:43:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 201 transitions. [2020-10-20 01:43:36,755 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 201 transitions. Word has length 18 [2020-10-20 01:43:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:36,755 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 201 transitions. [2020-10-20 01:43:36,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:43:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 201 transitions. [2020-10-20 01:43:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 01:43:36,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:36,757 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 01:43:36,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:43:36,758 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:36,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:36,759 INFO L82 PathProgramCache]: Analyzing trace with hash -616187229, now seen corresponding path program 1 times [2020-10-20 01:43:36,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:36,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671828128] [2020-10-20 01:43:36,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:36,886 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 01:43:36,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671828128] [2020-10-20 01:43:36,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:36,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:43:36,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184580694] [2020-10-20 01:43:36,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:43:36,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:36,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:43:36,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:36,890 INFO L87 Difference]: Start difference. First operand 139 states and 201 transitions. Second operand 3 states. [2020-10-20 01:43:36,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:36,906 INFO L93 Difference]: Finished difference Result 139 states and 201 transitions. [2020-10-20 01:43:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:43:36,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-20 01:43:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:36,908 INFO L225 Difference]: With dead ends: 139 [2020-10-20 01:43:36,908 INFO L226 Difference]: Without dead ends: 57 [2020-10-20 01:43:36,910 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 01:43:36,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-20 01:43:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-20 01:43:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 01:43:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 82 transitions. [2020-10-20 01:43:36,917 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 82 transitions. Word has length 19 [2020-10-20 01:43:36,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:36,918 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 82 transitions. [2020-10-20 01:43:36,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:43:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 82 transitions. [2020-10-20 01:43:36,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:43:36,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:36,919 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 01:43:36,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:43:36,920 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:36,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:36,920 INFO L82 PathProgramCache]: Analyzing trace with hash 35331171, now seen corresponding path program 1 times [2020-10-20 01:43:36,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:36,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482160971] [2020-10-20 01:43:36,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:37,028 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 01:43:37,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482160971] [2020-10-20 01:43:37,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:37,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:43:37,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962706109] [2020-10-20 01:43:37,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:43:37,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:37,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:43:37,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:37,030 INFO L87 Difference]: Start difference. First operand 57 states and 82 transitions. Second operand 3 states. [2020-10-20 01:43:37,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:37,051 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2020-10-20 01:43:37,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:43:37,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-20 01:43:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:37,053 INFO L225 Difference]: With dead ends: 159 [2020-10-20 01:43:37,053 INFO L226 Difference]: Without dead ends: 108 [2020-10-20 01:43:37,054 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 01:43:37,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-20 01:43:37,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2020-10-20 01:43:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-20 01:43:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 153 transitions. [2020-10-20 01:43:37,071 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 153 transitions. Word has length 24 [2020-10-20 01:43:37,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:37,071 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 153 transitions. [2020-10-20 01:43:37,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:43:37,071 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 153 transitions. [2020-10-20 01:43:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:43:37,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:37,073 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 01:43:37,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:43:37,073 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:37,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:37,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1148352902, now seen corresponding path program 1 times [2020-10-20 01:43:37,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:37,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811911788] [2020-10-20 01:43:37,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:37,149 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 01:43:37,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811911788] [2020-10-20 01:43:37,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:37,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:43:37,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225507182] [2020-10-20 01:43:37,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:43:37,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:37,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:43:37,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:43:37,151 INFO L87 Difference]: Start difference. First operand 104 states and 153 transitions. Second operand 3 states. [2020-10-20 01:43:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:37,198 INFO L93 Difference]: Finished difference Result 247 states and 368 transitions. [2020-10-20 01:43:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:43:37,199 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-20 01:43:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:37,201 INFO L225 Difference]: With dead ends: 247 [2020-10-20 01:43:37,201 INFO L226 Difference]: Without dead ends: 149 [2020-10-20 01:43:37,202 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 01:43:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-20 01:43:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2020-10-20 01:43:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-20 01:43:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 213 transitions. [2020-10-20 01:43:37,218 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 213 transitions. Word has length 26 [2020-10-20 01:43:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:37,219 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 213 transitions. [2020-10-20 01:43:37,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:43:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 213 transitions. [2020-10-20 01:43:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 01:43:37,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:37,221 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 01:43:37,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:43:37,221 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:37,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1938820856, now seen corresponding path program 1 times [2020-10-20 01:43:37,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:37,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687721702] [2020-10-20 01:43:37,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:43:37,339 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 01:43:37,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687721702] [2020-10-20 01:43:37,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:43:37,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:43:37,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740214444] [2020-10-20 01:43:37,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:43:37,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:43:37,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:43:37,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:43:37,342 INFO L87 Difference]: Start difference. First operand 147 states and 213 transitions. Second operand 5 states. [2020-10-20 01:43:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:43:37,516 INFO L93 Difference]: Finished difference Result 773 states and 1137 transitions. [2020-10-20 01:43:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:43:37,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-20 01:43:37,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:43:37,520 INFO L225 Difference]: With dead ends: 773 [2020-10-20 01:43:37,521 INFO L226 Difference]: Without dead ends: 632 [2020-10-20 01:43:37,522 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 01:43:37,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-10-20 01:43:37,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 244. [2020-10-20 01:43:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-20 01:43:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 344 transitions. [2020-10-20 01:43:37,566 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 344 transitions. Word has length 27 [2020-10-20 01:43:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:43:37,566 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 344 transitions. [2020-10-20 01:43:37,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:43:37,566 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 344 transitions. [2020-10-20 01:43:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 01:43:37,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:43:37,568 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 01:43:37,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:43:37,568 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:43:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:43:37,569 INFO L82 PathProgramCache]: Analyzing trace with hash 238557114, now seen corresponding path program 1 times [2020-10-20 01:43:37,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:43:37,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964597042] [2020-10-20 01:43:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:43:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:43:37,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:43:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:43:37,727 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:43:37,791 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:43:37,791 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:43:37,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:43:37,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:43:37 BoogieIcfgContainer [2020-10-20 01:43:37,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:43:37,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:43:37,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:43:37,945 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:43:37,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:43:36" (3/4) ... [2020-10-20 01:43:37,948 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:43:38,079 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:43:38,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:43:38,081 INFO L168 Benchmark]: Toolchain (without parser) took 3782.38 ms. Allocated memory was 35.7 MB in the beginning and 63.4 MB in the end (delta: 27.8 MB). Free memory was 13.6 MB in the beginning and 17.2 MB in the end (delta: -3.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:38,082 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 33.6 MB. Free memory was 8.5 MB in the beginning and 8.5 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. [2020-10-20 01:43:38,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.78 ms. Allocated memory was 35.7 MB in the beginning and 45.6 MB in the end (delta: 10.0 MB). Free memory was 12.7 MB in the beginning and 25.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:38,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.18 ms. Allocated memory is still 45.6 MB. Free memory was 25.2 MB in the beginning and 20.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:38,083 INFO L168 Benchmark]: Boogie Preprocessor took 52.42 ms. Allocated memory is still 45.6 MB. Free memory was 20.6 MB in the beginning and 17.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:38,084 INFO L168 Benchmark]: RCFGBuilder took 1138.26 ms. Allocated memory was 45.6 MB in the beginning and 51.9 MB in the end (delta: 6.3 MB). Free memory was 17.4 MB in the beginning and 18.2 MB in the end (delta: -762.9 kB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:38,084 INFO L168 Benchmark]: TraceAbstraction took 1727.93 ms. Allocated memory was 51.9 MB in the beginning and 63.4 MB in the end (delta: 11.5 MB). Free memory was 17.8 MB in the beginning and 30.9 MB in the end (delta: -13.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:38,085 INFO L168 Benchmark]: Witness Printer took 134.84 ms. Allocated memory is still 63.4 MB. Free memory was 30.9 MB in the beginning and 17.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:43:38,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 33.6 MB. Free memory was 8.5 MB in the beginning and 8.5 MB in the end (delta: 43.6 kB). Peak memory consumption was 43.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 640.78 ms. Allocated memory was 35.7 MB in the beginning and 45.6 MB in the end (delta: 10.0 MB). Free memory was 12.7 MB in the beginning and 25.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 77.18 ms. Allocated memory is still 45.6 MB. Free memory was 25.2 MB in the beginning and 20.8 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 52.42 ms. Allocated memory is still 45.6 MB. Free memory was 20.6 MB in the beginning and 17.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1138.26 ms. Allocated memory was 45.6 MB in the beginning and 51.9 MB in the end (delta: 6.3 MB). Free memory was 17.4 MB in the beginning and 18.2 MB in the end (delta: -762.9 kB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1727.93 ms. Allocated memory was 51.9 MB in the beginning and 63.4 MB in the end (delta: 11.5 MB). Free memory was 17.8 MB in the beginning and 30.9 MB in the end (delta: -13.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 14.3 GB. * Witness Printer took 134.84 ms. Allocated memory is still 63.4 MB. Free memory was 30.9 MB in the beginning and 17.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 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: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int waterLevel = 1; [L417] int methaneLevelCritical = 0; [L519] int cleanupTimeShifts = 4; [L771] int pumpRunning = 0; [L772] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L598] int retValue_acc ; [L599] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L647] int retValue_acc ; [L650] retValue_acc = 1 [L651] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L605] tmp = valid_product() [L607] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L703] int splverifierCounter ; [L704] int tmp ; [L705] int tmp___0 ; [L706] int tmp___1 ; [L707] int tmp___2 ; [L710] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L712] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L714] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L720] tmp = __VERIFIER_nondet_int() [L722] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L434] COND TRUE waterLevel < 2 [L435] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L730] tmp___0 = __VERIFIER_nondet_int() [L732] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L740] tmp___2 = __VERIFIER_nondet_int() [L742] COND FALSE !(\read(tmp___2)) [L746] tmp___1 = __VERIFIER_nondet_int() [L748] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L989] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L996] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L778] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L785] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L659] int tmp ; [L660] int tmp___0 ; [L661] int tmp___1 ; [L455] int retValue_acc ; [L458] retValue_acc = methaneLevelCritical [L459] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L665] tmp = isMethaneLevelCritical() [L667] COND FALSE !(\read(tmp)) [L487] int retValue_acc ; [L490] retValue_acc = waterLevel [L491] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L671] tmp___0 = getWaterLevel() [L673] COND TRUE tmp___0 == 2 [L903] int retValue_acc ; [L906] retValue_acc = pumpRunning [L907] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L675] tmp___1 = isPumpRunning() [L677] 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_product59.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, 146 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: 583 SDtfs, 512 SDslu, 450 SDs, 0 SdLazy, 65 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=244occurred 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, 394 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...