./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product36.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_spec2_product36.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 de1d9a043543a6ff316ba93a02e2ab847e173d5e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:42:26,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:42:26,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:42:26,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:42:26,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:42:26,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:42:26,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:42:26,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:42:26,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:42:26,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:42:26,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:42:26,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:42:26,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:42:26,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:42:26,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:42:26,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:42:26,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:42:26,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:42:26,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:42:26,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:42:26,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:42:26,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:42:26,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:42:26,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:42:26,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:42:26,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:42:26,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:42:26,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:42:26,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:42:26,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:42:26,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:42:26,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:42:26,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:42:26,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:42:26,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:42:26,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:42:26,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:42:26,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:42:26,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:42:26,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:42:26,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:42:26,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:42:26,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:42:26,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:42:26,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:42:26,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:42:26,296 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:42:26,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:42:26,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:42:26,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:42:26,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:42:26,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:42:26,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:42:26,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:42:26,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:42:26,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:42:26,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:42:26,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:42:26,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:42:26,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:42:26,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:42:26,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:42:26,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:42:26,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:42:26,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:42:26,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:42:26,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:42:26,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:42:26,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:42:26,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:42:26,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:42:26,304 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 -> de1d9a043543a6ff316ba93a02e2ab847e173d5e [2020-10-20 01:42:26,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:42:26,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:42:26,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:42:26,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:42:26,542 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:42:26,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2020-10-20 01:42:26,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2f3799a9/21509bf371c24df28b0e77df8a16076e/FLAGfe91ae121 [2020-10-20 01:42:27,173 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:42:27,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2020-10-20 01:42:27,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2f3799a9/21509bf371c24df28b0e77df8a16076e/FLAGfe91ae121 [2020-10-20 01:42:27,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2f3799a9/21509bf371c24df28b0e77df8a16076e [2020-10-20 01:42:27,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:42:27,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:42:27,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:42:27,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:42:27,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:42:27,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:42:27" (1/1) ... [2020-10-20 01:42:27,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638588cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:27, skipping insertion in model container [2020-10-20 01:42:27,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:42:27" (1/1) ... [2020-10-20 01:42:27,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:42:27,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:42:27,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:42:27,947 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:42:28,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:42:28,127 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:42:28,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28 WrapperNode [2020-10-20 01:42:28,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:42:28,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:42:28,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:42:28,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:42:28,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28" (1/1) ... [2020-10-20 01:42:28,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28" (1/1) ... [2020-10-20 01:42:28,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:42:28,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:42:28,199 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:42:28,199 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:42:28,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28" (1/1) ... [2020-10-20 01:42:28,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28" (1/1) ... [2020-10-20 01:42:28,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28" (1/1) ... [2020-10-20 01:42:28,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28" (1/1) ... [2020-10-20 01:42:28,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28" (1/1) ... [2020-10-20 01:42:28,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28" (1/1) ... [2020-10-20 01:42:28,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28" (1/1) ... [2020-10-20 01:42:28,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:42:28,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:42:28,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:42:28,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:42:28,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28" (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 01:42:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:42:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:42:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:42:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:42:29,289 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:42:29,289 INFO L298 CfgBuilder]: Removed 110 assume(true) statements. [2020-10-20 01:42:29,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:42:29 BoogieIcfgContainer [2020-10-20 01:42:29,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:42:29,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:42:29,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:42:29,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:42:29,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:42:27" (1/3) ... [2020-10-20 01:42:29,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592e751b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:42:29, skipping insertion in model container [2020-10-20 01:42:29,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:42:28" (2/3) ... [2020-10-20 01:42:29,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@592e751b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:42:29, skipping insertion in model container [2020-10-20 01:42:29,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:42:29" (3/3) ... [2020-10-20 01:42:29,309 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2020-10-20 01:42:29,320 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:42:29,327 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:42:29,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:42:29,358 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:42:29,358 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:42:29,359 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:42:29,359 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:42:29,359 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:42:29,360 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:42:29,360 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:42:29,360 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:42:29,375 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-10-20 01:42:29,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 01:42:29,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:42:29,382 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 01:42:29,382 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:42:29,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:42:29,388 INFO L82 PathProgramCache]: Analyzing trace with hash -801484653, now seen corresponding path program 1 times [2020-10-20 01:42:29,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:42:29,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416192048] [2020-10-20 01:42:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:42:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:42:29,674 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 01:42:29,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416192048] [2020-10-20 01:42:29,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:42:29,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:42:29,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492772554] [2020-10-20 01:42:29,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:42:29,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:42:29,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:42:29,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:42:29,701 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 2 states. [2020-10-20 01:42:29,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:42:29,765 INFO L93 Difference]: Finished difference Result 164 states and 249 transitions. [2020-10-20 01:42:29,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:42:29,766 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-10-20 01:42:29,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:42:29,778 INFO L225 Difference]: With dead ends: 164 [2020-10-20 01:42:29,778 INFO L226 Difference]: Without dead ends: 80 [2020-10-20 01:42:29,782 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 01:42:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-20 01:42:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-20 01:42:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 01:42:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2020-10-20 01:42:29,827 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 18 [2020-10-20 01:42:29,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:42:29,828 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2020-10-20 01:42:29,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:42:29,828 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2020-10-20 01:42:29,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 01:42:29,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:42:29,829 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 01:42:29,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:42:29,830 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:42:29,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:42:29,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1754314045, now seen corresponding path program 1 times [2020-10-20 01:42:29,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:42:29,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904548560] [2020-10-20 01:42:29,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:42:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:42:29,957 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 01:42:29,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904548560] [2020-10-20 01:42:29,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:42:29,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:42:29,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442980457] [2020-10-20 01:42:29,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:42:29,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:42:29,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:42:29,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:42:29,962 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand 3 states. [2020-10-20 01:42:29,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:42:29,975 INFO L93 Difference]: Finished difference Result 80 states and 115 transitions. [2020-10-20 01:42:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:42:29,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-20 01:42:29,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:42:29,977 INFO L225 Difference]: With dead ends: 80 [2020-10-20 01:42:29,977 INFO L226 Difference]: Without dead ends: 38 [2020-10-20 01:42:29,978 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 01:42:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-20 01:42:29,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-20 01:42:29,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-20 01:42:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2020-10-20 01:42:29,990 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 19 [2020-10-20 01:42:29,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:42:29,992 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2020-10-20 01:42:29,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:42:29,993 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2020-10-20 01:42:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:42:29,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:42:29,995 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 01:42:29,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:42:29,996 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:42:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:42:29,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1219405376, now seen corresponding path program 1 times [2020-10-20 01:42:29,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:42:29,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319125023] [2020-10-20 01:42:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:42:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:42:30,145 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 01:42:30,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319125023] [2020-10-20 01:42:30,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:42:30,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:42:30,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330633057] [2020-10-20 01:42:30,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:42:30,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:42:30,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:42:30,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:42:30,151 INFO L87 Difference]: Start difference. First operand 38 states and 54 transitions. Second operand 5 states. [2020-10-20 01:42:30,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:42:30,302 INFO L93 Difference]: Finished difference Result 93 states and 137 transitions. [2020-10-20 01:42:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:42:30,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-20 01:42:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:42:30,306 INFO L225 Difference]: With dead ends: 93 [2020-10-20 01:42:30,307 INFO L226 Difference]: Without dead ends: 62 [2020-10-20 01:42:30,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 01:42:30,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-20 01:42:30,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2020-10-20 01:42:30,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-20 01:42:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2020-10-20 01:42:30,327 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 24 [2020-10-20 01:42:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:42:30,328 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2020-10-20 01:42:30,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:42:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2020-10-20 01:42:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:42:30,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:42:30,329 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] [2020-10-20 01:42:30,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:42:30,330 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:42:30,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:42:30,331 INFO L82 PathProgramCache]: Analyzing trace with hash 999444121, now seen corresponding path program 1 times [2020-10-20 01:42:30,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:42:30,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076250244] [2020-10-20 01:42:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:42:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:42:30,457 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 01:42:30,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076250244] [2020-10-20 01:42:30,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:42:30,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:42:30,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643687905] [2020-10-20 01:42:30,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:42:30,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:42:30,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:42:30,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:42:30,461 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand 3 states. [2020-10-20 01:42:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:42:30,515 INFO L93 Difference]: Finished difference Result 131 states and 195 transitions. [2020-10-20 01:42:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:42:30,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-20 01:42:30,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:42:30,517 INFO L225 Difference]: With dead ends: 131 [2020-10-20 01:42:30,518 INFO L226 Difference]: Without dead ends: 80 [2020-10-20 01:42:30,518 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 01:42:30,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-20 01:42:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-10-20 01:42:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-20 01:42:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 112 transitions. [2020-10-20 01:42:30,530 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 112 transitions. Word has length 25 [2020-10-20 01:42:30,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:42:30,531 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 112 transitions. [2020-10-20 01:42:30,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:42:30,531 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 112 transitions. [2020-10-20 01:42:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 01:42:30,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:42:30,532 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 01:42:30,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:42:30,533 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:42:30,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:42:30,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1239284745, now seen corresponding path program 1 times [2020-10-20 01:42:30,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:42:30,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988335019] [2020-10-20 01:42:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:42:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:42:30,627 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 01:42:30,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988335019] [2020-10-20 01:42:30,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:42:30,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:42:30,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131835628] [2020-10-20 01:42:30,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:42:30,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:42:30,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:42:30,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:42:30,630 INFO L87 Difference]: Start difference. First operand 78 states and 112 transitions. Second operand 5 states. [2020-10-20 01:42:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:42:30,736 INFO L93 Difference]: Finished difference Result 361 states and 530 transitions. [2020-10-20 01:42:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:42:30,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-20 01:42:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:42:30,740 INFO L225 Difference]: With dead ends: 361 [2020-10-20 01:42:30,740 INFO L226 Difference]: Without dead ends: 290 [2020-10-20 01:42:30,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:42:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-20 01:42:30,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 138. [2020-10-20 01:42:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-20 01:42:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 195 transitions. [2020-10-20 01:42:30,774 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 195 transitions. Word has length 27 [2020-10-20 01:42:30,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:42:30,774 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 195 transitions. [2020-10-20 01:42:30,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:42:30,775 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 195 transitions. [2020-10-20 01:42:30,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 01:42:30,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:42:30,779 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 01:42:30,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:42:30,779 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:42:30,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:42:30,780 INFO L82 PathProgramCache]: Analyzing trace with hash -194860415, now seen corresponding path program 1 times [2020-10-20 01:42:30,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:42:30,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237073065] [2020-10-20 01:42:30,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:42:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:42:30,920 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 01:42:30,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237073065] [2020-10-20 01:42:30,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:42:30,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:42:30,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222971387] [2020-10-20 01:42:30,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:42:30,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:42:30,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:42:30,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:42:30,924 INFO L87 Difference]: Start difference. First operand 138 states and 195 transitions. Second operand 5 states. [2020-10-20 01:42:31,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:42:31,069 INFO L93 Difference]: Finished difference Result 499 states and 711 transitions. [2020-10-20 01:42:31,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:42:31,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-20 01:42:31,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:42:31,072 INFO L225 Difference]: With dead ends: 499 [2020-10-20 01:42:31,072 INFO L226 Difference]: Without dead ends: 368 [2020-10-20 01:42:31,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 01:42:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-20 01:42:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 136. [2020-10-20 01:42:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-20 01:42:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 189 transitions. [2020-10-20 01:42:31,090 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 189 transitions. Word has length 28 [2020-10-20 01:42:31,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:42:31,091 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 189 transitions. [2020-10-20 01:42:31,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:42:31,091 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 189 transitions. [2020-10-20 01:42:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:42:31,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:42:31,093 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, 1, 1, 1, 1] [2020-10-20 01:42:31,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:42:31,094 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:42:31,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:42:31,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1409937664, now seen corresponding path program 1 times [2020-10-20 01:42:31,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:42:31,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089244875] [2020-10-20 01:42:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:42:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:42:31,153 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 01:42:31,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089244875] [2020-10-20 01:42:31,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:42:31,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:42:31,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509347920] [2020-10-20 01:42:31,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:42:31,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:42:31,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:42:31,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:42:31,156 INFO L87 Difference]: Start difference. First operand 136 states and 189 transitions. Second operand 5 states. [2020-10-20 01:42:31,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:42:31,234 INFO L93 Difference]: Finished difference Result 401 states and 556 transitions. [2020-10-20 01:42:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:42:31,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-20 01:42:31,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:42:31,237 INFO L225 Difference]: With dead ends: 401 [2020-10-20 01:42:31,237 INFO L226 Difference]: Without dead ends: 272 [2020-10-20 01:42:31,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:42:31,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-20 01:42:31,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 142. [2020-10-20 01:42:31,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-20 01:42:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 195 transitions. [2020-10-20 01:42:31,253 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 195 transitions. Word has length 32 [2020-10-20 01:42:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:42:31,254 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 195 transitions. [2020-10-20 01:42:31,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:42:31,254 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 195 transitions. [2020-10-20 01:42:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:42:31,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:42:31,255 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, 1, 1, 1, 1] [2020-10-20 01:42:31,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:42:31,256 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:42:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:42:31,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2111002242, now seen corresponding path program 1 times [2020-10-20 01:42:31,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:42:31,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775377960] [2020-10-20 01:42:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:42:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:42:31,327 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 01:42:31,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775377960] [2020-10-20 01:42:31,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:42:31,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 01:42:31,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633863056] [2020-10-20 01:42:31,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 01:42:31,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:42:31,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 01:42:31,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:42:31,330 INFO L87 Difference]: Start difference. First operand 142 states and 195 transitions. Second operand 6 states. [2020-10-20 01:42:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:42:31,442 INFO L93 Difference]: Finished difference Result 435 states and 595 transitions. [2020-10-20 01:42:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 01:42:31,442 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-20 01:42:31,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:42:31,444 INFO L225 Difference]: With dead ends: 435 [2020-10-20 01:42:31,445 INFO L226 Difference]: Without dead ends: 300 [2020-10-20 01:42:31,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:42:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-20 01:42:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 146. [2020-10-20 01:42:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-20 01:42:31,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 199 transitions. [2020-10-20 01:42:31,462 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 199 transitions. Word has length 32 [2020-10-20 01:42:31,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:42:31,462 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 199 transitions. [2020-10-20 01:42:31,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 01:42:31,462 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 199 transitions. [2020-10-20 01:42:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:42:31,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:42:31,463 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, 1, 1, 1, 1] [2020-10-20 01:42:31,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:42:31,464 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:42:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:42:31,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1524196228, now seen corresponding path program 1 times [2020-10-20 01:42:31,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:42:31,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188817555] [2020-10-20 01:42:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:42:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:42:31,529 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 01:42:31,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188817555] [2020-10-20 01:42:31,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:42:31,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:42:31,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993832471] [2020-10-20 01:42:31,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:42:31,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:42:31,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:42:31,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:42:31,532 INFO L87 Difference]: Start difference. First operand 146 states and 199 transitions. Second operand 3 states. [2020-10-20 01:42:31,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:42:31,571 INFO L93 Difference]: Finished difference Result 371 states and 505 transitions. [2020-10-20 01:42:31,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:42:31,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-20 01:42:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:42:31,573 INFO L225 Difference]: With dead ends: 371 [2020-10-20 01:42:31,573 INFO L226 Difference]: Without dead ends: 232 [2020-10-20 01:42:31,574 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 01:42:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-20 01:42:31,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2020-10-20 01:42:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-20 01:42:31,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 307 transitions. [2020-10-20 01:42:31,598 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 307 transitions. Word has length 32 [2020-10-20 01:42:31,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:42:31,599 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 307 transitions. [2020-10-20 01:42:31,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:42:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 307 transitions. [2020-10-20 01:42:31,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 01:42:31,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:42:31,600 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, 1, 1, 1, 1, 1] [2020-10-20 01:42:31,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:42:31,601 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:42:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:42:31,601 INFO L82 PathProgramCache]: Analyzing trace with hash 61292740, now seen corresponding path program 1 times [2020-10-20 01:42:31,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:42:31,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865913266] [2020-10-20 01:42:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:42:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:42:31,645 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 01:42:31,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865913266] [2020-10-20 01:42:31,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:42:31,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:42:31,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662591983] [2020-10-20 01:42:31,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:42:31,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:42:31,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:42:31,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:42:31,661 INFO L87 Difference]: Start difference. First operand 232 states and 307 transitions. Second operand 3 states. [2020-10-20 01:42:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:42:31,708 INFO L93 Difference]: Finished difference Result 315 states and 418 transitions. [2020-10-20 01:42:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:42:31,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-20 01:42:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:42:31,711 INFO L225 Difference]: With dead ends: 315 [2020-10-20 01:42:31,711 INFO L226 Difference]: Without dead ends: 313 [2020-10-20 01:42:31,712 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 01:42:31,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-20 01:42:31,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 265. [2020-10-20 01:42:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-20 01:42:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 356 transitions. [2020-10-20 01:42:31,739 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 356 transitions. Word has length 33 [2020-10-20 01:42:31,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:42:31,739 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 356 transitions. [2020-10-20 01:42:31,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:42:31,739 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 356 transitions. [2020-10-20 01:42:31,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-20 01:42:31,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:42:31,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:42:31,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:42:31,741 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:42:31,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:42:31,741 INFO L82 PathProgramCache]: Analyzing trace with hash -527636106, now seen corresponding path program 1 times [2020-10-20 01:42:31,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:42:31,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813338896] [2020-10-20 01:42:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:42:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:42:31,816 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:42:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:42:31,870 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:42:31,924 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:42:31,924 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:42:31,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 01:42:32,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:42:32 BoogieIcfgContainer [2020-10-20 01:42:32,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:42:32,074 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:42:32,074 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:42:32,075 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:42:32,075 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:42:29" (3/4) ... [2020-10-20 01:42:32,078 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:42:32,212 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:42:32,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:42:32,215 INFO L168 Benchmark]: Toolchain (without parser) took 4783.62 ms. Allocated memory was 34.6 MB in the beginning and 67.1 MB in the end (delta: 32.5 MB). Free memory was 11.0 MB in the beginning and 23.2 MB in the end (delta: -12.2 MB). Peak memory consumption was 35.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:42:32,216 INFO L168 Benchmark]: CDTParser took 0.89 ms. Allocated memory is still 34.1 MB. Free memory was 19.2 MB in the beginning and 19.2 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 01:42:32,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.00 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 10.1 MB in the beginning and 23.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:42:32,217 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.61 ms. Allocated memory is still 43.0 MB. Free memory was 23.8 MB in the beginning and 20.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:42:32,217 INFO L168 Benchmark]: Boogie Preprocessor took 43.56 ms. Allocated memory is still 43.0 MB. Free memory was 20.5 MB in the beginning and 18.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:42:32,218 INFO L168 Benchmark]: RCFGBuilder took 1049.10 ms. Allocated memory was 43.0 MB in the beginning and 47.2 MB in the end (delta: 4.2 MB). Free memory was 18.0 MB in the beginning and 12.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 01:42:32,218 INFO L168 Benchmark]: TraceAbstraction took 2779.96 ms. Allocated memory was 47.2 MB in the beginning and 67.1 MB in the end (delta: 19.9 MB). Free memory was 11.6 MB in the beginning and 9.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:42:32,219 INFO L168 Benchmark]: Witness Printer took 138.62 ms. Allocated memory is still 67.1 MB. Free memory was 9.9 MB in the beginning and 23.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:42:32,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.89 ms. Allocated memory is still 34.1 MB. Free memory was 19.2 MB in the beginning and 19.2 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 690.00 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 10.1 MB in the beginning and 23.8 MB in the end (delta: -13.7 MB). Peak memory consumption was 8.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 69.61 ms. Allocated memory is still 43.0 MB. Free memory was 23.8 MB in the beginning and 20.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 43.56 ms. Allocated memory is still 43.0 MB. Free memory was 20.5 MB in the beginning and 18.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1049.10 ms. Allocated memory was 43.0 MB in the beginning and 47.2 MB in the end (delta: 4.2 MB). Free memory was 18.0 MB in the beginning and 12.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2779.96 ms. Allocated memory was 47.2 MB in the beginning and 67.1 MB in the end (delta: 19.9 MB). Free memory was 11.6 MB in the beginning and 9.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 14.3 GB. * Witness Printer took 138.62 ms. Allocated memory is still 67.1 MB. Free memory was 9.9 MB in the beginning and 23.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 2.0 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: [L49] int waterLevel = 1; [L50] int methaneLevelCritical = 0; [L312] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L547] int cleanupTimeShifts = 4; [L653] int pumpRunning = 0; [L654] int systemActive = 1; [L907] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L625] int retValue_acc ; [L626] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L632] tmp = valid_product() [L634] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L912] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L830] int splverifierCounter ; [L831] int tmp ; [L832] int tmp___0 ; [L833] int tmp___1 ; [L834] int tmp___2 ; [L837] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L839] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L841] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L847] tmp = __VERIFIER_nondet_int() [L849] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L67] COND TRUE waterLevel < 2 [L68] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L857] tmp___0 = __VERIFIER_nondet_int() [L859] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L79] COND FALSE !(\read(methaneLevelCritical)) [L82] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L867] tmp___2 = __VERIFIER_nondet_int() [L869] COND TRUE \read(tmp___2) [L824] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L661] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L668] COND TRUE \read(systemActive) [L690] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L693] COND TRUE ! pumpRunning [L787] int retValue_acc ; [L788] int tmp ; [L789] int tmp___0 ; [L129] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L132] COND FALSE !(waterLevel < 2) [L136] retValue_acc = 0 [L137] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L793] tmp = isHighWaterSensorDry() [L795] COND FALSE !(\read(tmp)) [L798] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L800] retValue_acc = tmp___0 [L801] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L695] tmp = isHighWaterLevel() [L697] COND TRUE \read(tmp) [L718] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L917] int tmp ; [L918] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L922] tmp = isMethaneLevelCritical() [L924] COND TRUE \read(tmp) [L742] int retValue_acc ; [L745] retValue_acc = pumpRunning [L746] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L926] tmp___0 = isPumpRunning() [L928] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L929] COND FALSE !(\read(methAndRunningLastTime)) [L934] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L839] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L841] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L847] tmp = __VERIFIER_nondet_int() [L849] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L857] tmp___0 = __VERIFIER_nondet_int() [L859] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L867] tmp___2 = __VERIFIER_nondet_int() [L869] COND TRUE \read(tmp___2) [L824] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L661] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L55] COND TRUE waterLevel > 0 [L56] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L668] COND TRUE \read(systemActive) [L690] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L693] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L917] int tmp ; [L918] int tmp___0 ; [L88] int retValue_acc ; [L91] retValue_acc = methaneLevelCritical [L92] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L922] tmp = isMethaneLevelCritical() [L924] COND TRUE \read(tmp) [L742] int retValue_acc ; [L745] retValue_acc = pumpRunning [L746] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L926] tmp___0 = isPumpRunning() [L928] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L929] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L3] __assert_fail("0", "minepump_spec2_product36.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 708 SDtfs, 1032 SDslu, 982 SDs, 0 SdLazy, 120 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=265occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 722 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 13980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...