./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product51.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_spec1_product51.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 3219ef411dc22888fa71dd9e88c133c38c4dd29d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 01:41:48,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:41:48,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:41:48,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:41:48,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:41:48,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:41:48,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:41:48,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:41:48,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:41:48,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:41:48,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:41:48,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:41:48,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:41:48,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:41:48,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:41:48,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:41:48,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:41:48,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:41:48,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:41:48,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:41:48,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:41:48,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:41:48,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:41:48,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:41:48,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:41:48,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:41:48,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:41:48,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:41:48,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:41:48,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:41:48,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:41:48,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:41:48,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:41:48,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:41:48,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:41:48,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:41:48,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:41:48,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:41:48,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:41:48,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:41:48,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:41:48,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:41:48,261 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:41:48,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:41:48,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:41:48,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:41:48,264 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:41:48,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:41:48,265 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:41:48,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:41:48,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:41:48,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:41:48,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:41:48,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:41:48,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:41:48,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:41:48,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:41:48,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:41:48,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:41:48,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:41:48,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:41:48,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:41:48,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:41:48,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:41:48,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:41:48,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:41:48,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:41:48,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:41:48,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:41:48,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:41:48,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:41:48,270 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 -> 3219ef411dc22888fa71dd9e88c133c38c4dd29d [2020-10-20 01:41:48,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:41:48,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:41:48,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:41:48,532 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:41:48,533 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:41:48,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2020-10-20 01:41:48,612 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8615fc666/4b4dee11ca084840b01225a582cbaad9/FLAGcdcb1c59e [2020-10-20 01:41:49,223 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:41:49,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product51.cil.c [2020-10-20 01:41:49,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8615fc666/4b4dee11ca084840b01225a582cbaad9/FLAGcdcb1c59e [2020-10-20 01:41:49,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8615fc666/4b4dee11ca084840b01225a582cbaad9 [2020-10-20 01:41:49,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:41:49,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:41:49,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:49,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:41:49,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:41:49,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:49" (1/1) ... [2020-10-20 01:41:49,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a6296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:49, skipping insertion in model container [2020-10-20 01:41:49,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:41:49" (1/1) ... [2020-10-20 01:41:49,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:41:49,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:41:49,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:50,002 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:41:50,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:41:50,132 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:41:50,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50 WrapperNode [2020-10-20 01:41:50,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:41:50,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:50,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:41:50,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:41:50,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:41:50,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:41:50,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:41:50,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:41:50,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (1/1) ... [2020-10-20 01:41:50,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:41:50,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:41:50,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:41:50,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:41:50,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (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 01:41:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:41:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:41:50,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:41:50,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:41:51,415 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:41:51,415 INFO L298 CfgBuilder]: Removed 166 assume(true) statements. [2020-10-20 01:41:51,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:51 BoogieIcfgContainer [2020-10-20 01:41:51,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:41:51,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:41:51,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:41:51,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:41:51,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:41:49" (1/3) ... [2020-10-20 01:41:51,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae00a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:51, skipping insertion in model container [2020-10-20 01:41:51,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:41:50" (2/3) ... [2020-10-20 01:41:51,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae00a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:41:51, skipping insertion in model container [2020-10-20 01:41:51,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:51" (3/3) ... [2020-10-20 01:41:51,427 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product51.cil.c [2020-10-20 01:41:51,439 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:41:51,447 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-20 01:41:51,461 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-20 01:41:51,485 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:41:51,485 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:41:51,485 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:41:51,485 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:41:51,486 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:41:51,486 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:41:51,486 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:41:51,486 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:41:51,506 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-10-20 01:41:51,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 01:41:51,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:51,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:51,515 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:51,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:51,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1866399249, now seen corresponding path program 1 times [2020-10-20 01:41:51,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:51,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260028943] [2020-10-20 01:41:51,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:51,807 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 01:41:51,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260028943] [2020-10-20 01:41:51,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:51,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:51,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332706643] [2020-10-20 01:41:51,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 01:41:51,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 01:41:51,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 01:41:51,830 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 2 states. [2020-10-20 01:41:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:51,867 INFO L93 Difference]: Finished difference Result 235 states and 356 transitions. [2020-10-20 01:41:51,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 01:41:51,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-20 01:41:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:51,883 INFO L225 Difference]: With dead ends: 235 [2020-10-20 01:41:51,883 INFO L226 Difference]: Without dead ends: 115 [2020-10-20 01:41:51,888 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 01:41:51,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-20 01:41:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-10-20 01:41:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-20 01:41:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2020-10-20 01:41:51,940 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 16 [2020-10-20 01:41:51,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:51,940 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2020-10-20 01:41:51,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 01:41:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2020-10-20 01:41:51,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:41:51,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:51,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:41:51,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:41:51,943 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:51,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:51,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1381811150, now seen corresponding path program 1 times [2020-10-20 01:41:51,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:51,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63886847] [2020-10-20 01:41:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:52,151 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 01:41:52,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63886847] [2020-10-20 01:41:52,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:52,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 01:41:52,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798158269] [2020-10-20 01:41:52,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:52,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:52,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:52,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:52,156 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand 3 states. [2020-10-20 01:41:52,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:52,171 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2020-10-20 01:41:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:52,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-20 01:41:52,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:52,173 INFO L225 Difference]: With dead ends: 115 [2020-10-20 01:41:52,174 INFO L226 Difference]: Without dead ends: 49 [2020-10-20 01:41:52,175 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 01:41:52,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-20 01:41:52,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-20 01:41:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 01:41:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2020-10-20 01:41:52,183 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 17 [2020-10-20 01:41:52,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:52,183 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2020-10-20 01:41:52,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:52,184 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2020-10-20 01:41:52,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 01:41:52,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:52,185 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] [2020-10-20 01:41:52,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:41:52,186 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:52,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:52,187 INFO L82 PathProgramCache]: Analyzing trace with hash -426243093, now seen corresponding path program 1 times [2020-10-20 01:41:52,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:52,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603641402] [2020-10-20 01:41:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:52,315 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 01:41:52,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603641402] [2020-10-20 01:41:52,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:52,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:52,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058445845] [2020-10-20 01:41:52,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:52,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:52,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:52,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:52,318 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 3 states. [2020-10-20 01:41:52,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:52,342 INFO L93 Difference]: Finished difference Result 135 states and 201 transitions. [2020-10-20 01:41:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:52,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-20 01:41:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:52,345 INFO L225 Difference]: With dead ends: 135 [2020-10-20 01:41:52,345 INFO L226 Difference]: Without dead ends: 92 [2020-10-20 01:41:52,346 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 01:41:52,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-20 01:41:52,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2020-10-20 01:41:52,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-20 01:41:52,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 131 transitions. [2020-10-20 01:41:52,362 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 131 transitions. Word has length 22 [2020-10-20 01:41:52,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:52,363 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 131 transitions. [2020-10-20 01:41:52,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:52,363 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 131 transitions. [2020-10-20 01:41:52,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 01:41:52,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:52,365 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 01:41:52,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 01:41:52,366 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:52,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:52,366 INFO L82 PathProgramCache]: Analyzing trace with hash 844046893, now seen corresponding path program 1 times [2020-10-20 01:41:52,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:52,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858219038] [2020-10-20 01:41:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:52,437 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 01:41:52,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858219038] [2020-10-20 01:41:52,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:52,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:52,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329812408] [2020-10-20 01:41:52,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:52,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:52,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:52,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:52,440 INFO L87 Difference]: Start difference. First operand 88 states and 131 transitions. Second operand 3 states. [2020-10-20 01:41:52,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:52,493 INFO L93 Difference]: Finished difference Result 211 states and 318 transitions. [2020-10-20 01:41:52,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:52,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-20 01:41:52,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:52,496 INFO L225 Difference]: With dead ends: 211 [2020-10-20 01:41:52,496 INFO L226 Difference]: Without dead ends: 129 [2020-10-20 01:41:52,498 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 01:41:52,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-20 01:41:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2020-10-20 01:41:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-20 01:41:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 185 transitions. [2020-10-20 01:41:52,515 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 185 transitions. Word has length 24 [2020-10-20 01:41:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:52,516 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 185 transitions. [2020-10-20 01:41:52,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 185 transitions. [2020-10-20 01:41:52,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 01:41:52,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:52,518 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 01:41:52,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:41:52,518 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:52,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:52,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1604149312, now seen corresponding path program 1 times [2020-10-20 01:41:52,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:52,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248977312] [2020-10-20 01:41:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:52,591 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 01:41:52,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248977312] [2020-10-20 01:41:52,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:52,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:52,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366161906] [2020-10-20 01:41:52,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:52,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:52,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:52,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:52,593 INFO L87 Difference]: Start difference. First operand 127 states and 185 transitions. Second operand 5 states. [2020-10-20 01:41:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:52,717 INFO L93 Difference]: Finished difference Result 683 states and 1014 transitions. [2020-10-20 01:41:52,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:41:52,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-20 01:41:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:52,723 INFO L225 Difference]: With dead ends: 683 [2020-10-20 01:41:52,723 INFO L226 Difference]: Without dead ends: 562 [2020-10-20 01:41:52,725 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 01:41:52,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-20 01:41:52,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 238. [2020-10-20 01:41:52,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-20 01:41:52,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 343 transitions. [2020-10-20 01:41:52,758 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 343 transitions. Word has length 25 [2020-10-20 01:41:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:52,758 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 343 transitions. [2020-10-20 01:41:52,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 343 transitions. [2020-10-20 01:41:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 01:41:52,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:52,761 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 01:41:52,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 01:41:52,761 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:52,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:52,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1807956406, now seen corresponding path program 1 times [2020-10-20 01:41:52,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:52,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295579741] [2020-10-20 01:41:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:52,866 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 01:41:52,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295579741] [2020-10-20 01:41:52,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:52,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:52,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255829657] [2020-10-20 01:41:52,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:52,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:52,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:52,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:52,870 INFO L87 Difference]: Start difference. First operand 238 states and 343 transitions. Second operand 5 states. [2020-10-20 01:41:53,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:53,066 INFO L93 Difference]: Finished difference Result 684 states and 990 transitions. [2020-10-20 01:41:53,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:41:53,067 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-20 01:41:53,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:53,071 INFO L225 Difference]: With dead ends: 684 [2020-10-20 01:41:53,072 INFO L226 Difference]: Without dead ends: 682 [2020-10-20 01:41:53,073 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 01:41:53,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-10-20 01:41:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 238. [2020-10-20 01:41:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-20 01:41:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 341 transitions. [2020-10-20 01:41:53,106 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 341 transitions. Word has length 26 [2020-10-20 01:41:53,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:53,106 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 341 transitions. [2020-10-20 01:41:53,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 341 transitions. [2020-10-20 01:41:53,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:53,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:53,109 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] [2020-10-20 01:41:53,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:41:53,109 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:53,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:53,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1131451540, now seen corresponding path program 1 times [2020-10-20 01:41:53,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:53,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673640101] [2020-10-20 01:41:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:53,168 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 01:41:53,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673640101] [2020-10-20 01:41:53,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:53,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:41:53,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090070491] [2020-10-20 01:41:53,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:41:53,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:53,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:41:53,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:53,170 INFO L87 Difference]: Start difference. First operand 238 states and 341 transitions. Second operand 5 states. [2020-10-20 01:41:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:53,275 INFO L93 Difference]: Finished difference Result 650 states and 916 transitions. [2020-10-20 01:41:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:41:53,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-10-20 01:41:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:53,278 INFO L225 Difference]: With dead ends: 650 [2020-10-20 01:41:53,278 INFO L226 Difference]: Without dead ends: 418 [2020-10-20 01:41:53,279 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 01:41:53,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-20 01:41:53,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 262. [2020-10-20 01:41:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-20 01:41:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 365 transitions. [2020-10-20 01:41:53,301 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 365 transitions. Word has length 31 [2020-10-20 01:41:53,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:53,302 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 365 transitions. [2020-10-20 01:41:53,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:41:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 365 transitions. [2020-10-20 01:41:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:53,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:53,304 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] [2020-10-20 01:41:53,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 01:41:53,305 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:53,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:53,306 INFO L82 PathProgramCache]: Analyzing trace with hash 738424530, now seen corresponding path program 1 times [2020-10-20 01:41:53,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:53,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415372420] [2020-10-20 01:41:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:53,357 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 01:41:53,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415372420] [2020-10-20 01:41:53,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:53,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:41:53,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710042763] [2020-10-20 01:41:53,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:41:53,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:53,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:41:53,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:41:53,361 INFO L87 Difference]: Start difference. First operand 262 states and 365 transitions. Second operand 4 states. [2020-10-20 01:41:53,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:53,435 INFO L93 Difference]: Finished difference Result 638 states and 878 transitions. [2020-10-20 01:41:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 01:41:53,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-20 01:41:53,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:53,438 INFO L225 Difference]: With dead ends: 638 [2020-10-20 01:41:53,439 INFO L226 Difference]: Without dead ends: 382 [2020-10-20 01:41:53,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:41:53,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-20 01:41:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 278. [2020-10-20 01:41:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-20 01:41:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 381 transitions. [2020-10-20 01:41:53,461 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 381 transitions. Word has length 31 [2020-10-20 01:41:53,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:53,462 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 381 transitions. [2020-10-20 01:41:53,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:41:53,462 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 381 transitions. [2020-10-20 01:41:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 01:41:53,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:53,464 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] [2020-10-20 01:41:53,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 01:41:53,465 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:53,465 INFO L82 PathProgramCache]: Analyzing trace with hash 996589968, now seen corresponding path program 1 times [2020-10-20 01:41:53,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:53,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775408017] [2020-10-20 01:41:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:41:53,508 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 01:41:53,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775408017] [2020-10-20 01:41:53,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:41:53,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 01:41:53,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128766007] [2020-10-20 01:41:53,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 01:41:53,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:41:53,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 01:41:53,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 01:41:53,511 INFO L87 Difference]: Start difference. First operand 278 states and 381 transitions. Second operand 3 states. [2020-10-20 01:41:53,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:41:53,670 INFO L93 Difference]: Finished difference Result 654 states and 890 transitions. [2020-10-20 01:41:53,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:41:53,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-10-20 01:41:53,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:41:53,673 INFO L225 Difference]: With dead ends: 654 [2020-10-20 01:41:53,674 INFO L226 Difference]: Without dead ends: 382 [2020-10-20 01:41:53,674 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 01:41:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-20 01:41:53,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2020-10-20 01:41:53,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-20 01:41:53,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 507 transitions. [2020-10-20 01:41:53,704 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 507 transitions. Word has length 31 [2020-10-20 01:41:53,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:41:53,705 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 507 transitions. [2020-10-20 01:41:53,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 01:41:53,705 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 507 transitions. [2020-10-20 01:41:53,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 01:41:53,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:41:53,707 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 01:41:53,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 01:41:53,708 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:41:53,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:41:53,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1116169902, now seen corresponding path program 1 times [2020-10-20 01:41:53,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:41:53,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695729159] [2020-10-20 01:41:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:41:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:53,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:41:53,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:41:53,934 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:41:53,934 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:41:53,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 01:41:54,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:41:54 BoogieIcfgContainer [2020-10-20 01:41:54,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:41:54,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:41:54,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:41:54,089 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:41:54,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:41:51" (3/4) ... [2020-10-20 01:41:54,093 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:41:54,240 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:41:54,241 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:41:54,244 INFO L168 Benchmark]: Toolchain (without parser) took 4668.36 ms. Allocated memory was 41.9 MB in the beginning and 80.7 MB in the end (delta: 38.8 MB). Free memory was 21.3 MB in the beginning and 32.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,244 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 31.5 MB. Free memory was 8.6 MB in the beginning and 8.6 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.77 ms. Allocated memory was 41.9 MB in the beginning and 44.6 MB in the end (delta: 2.6 MB). Free memory was 20.4 MB in the beginning and 27.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.91 ms. Allocated memory is still 44.6 MB. Free memory was 27.4 MB in the beginning and 23.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,246 INFO L168 Benchmark]: Boogie Preprocessor took 50.26 ms. Allocated memory is still 44.6 MB. Free memory was 23.3 MB in the beginning and 20.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,246 INFO L168 Benchmark]: RCFGBuilder took 1160.41 ms. Allocated memory was 44.6 MB in the beginning and 49.8 MB in the end (delta: 5.2 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 13.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,247 INFO L168 Benchmark]: TraceAbstraction took 2669.04 ms. Allocated memory was 49.8 MB in the beginning and 80.7 MB in the end (delta: 30.9 MB). Free memory was 17.4 MB in the beginning and 48.0 MB in the end (delta: -30.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,247 INFO L168 Benchmark]: Witness Printer took 152.56 ms. Allocated memory is still 80.7 MB. Free memory was 48.0 MB in the beginning and 32.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:41:54,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 31.5 MB. Free memory was 8.6 MB in the beginning and 8.6 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 553.77 ms. Allocated memory was 41.9 MB in the beginning and 44.6 MB in the end (delta: 2.6 MB). Free memory was 20.4 MB in the beginning and 27.4 MB in the end (delta: -7.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 71.91 ms. Allocated memory is still 44.6 MB. Free memory was 27.4 MB in the beginning and 23.3 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 50.26 ms. Allocated memory is still 44.6 MB. Free memory was 23.3 MB in the beginning and 20.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1160.41 ms. Allocated memory was 44.6 MB in the beginning and 49.8 MB in the end (delta: 5.2 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 13.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2669.04 ms. Allocated memory was 49.8 MB in the beginning and 80.7 MB in the end (delta: 30.9 MB). Free memory was 17.4 MB in the beginning and 48.0 MB in the end (delta: -30.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 14.3 GB. * Witness Printer took 152.56 ms. Allocated memory is still 80.7 MB. Free memory was 48.0 MB in the beginning and 32.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 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: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L505] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L775] int cleanupTimeShifts = 4; [L872] int waterLevel = 1; [L873] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L848] int retValue_acc ; [L849] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L740] int retValue_acc ; [L743] retValue_acc = 1 [L744] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L855] tmp = valid_product() [L857] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L890] COND TRUE waterLevel < 2 [L891] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L902] COND FALSE !(\read(methaneLevelCritical)) [L905] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L131] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L138] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L189] COND FALSE !(\read(pumpRunning)) [L160] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L163] COND TRUE ! pumpRunning [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L952] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L955] COND FALSE !(waterLevel < 2) [L959] retValue_acc = 0 [L960] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L214] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L750] int tmp ; [L751] int tmp___0 ; [L911] int retValue_acc ; [L914] retValue_acc = methaneLevelCritical [L915] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L755] tmp = isMethaneLevelCritical() [L757] COND TRUE \read(tmp) [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L759] tmp___0 = isPumpRunning() [L761] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L3] __assert_fail("0", "minepump_spec1_product51.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 877 SDtfs, 966 SDslu, 1164 SDs, 0 SdLazy, 147 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=382occurred in iteration=9, 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, 9 MinimizatonAttempts, 1034 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 10476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...