./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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_spec4_product46.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 0c528157ad3ccc512d501b1e66086beae537118a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-25 23:07:34,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 23:07:34,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 23:07:34,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 23:07:34,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 23:07:34,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 23:07:34,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 23:07:34,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 23:07:34,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 23:07:34,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 23:07:34,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 23:07:34,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 23:07:34,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 23:07:34,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 23:07:34,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 23:07:34,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 23:07:34,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 23:07:34,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 23:07:34,451 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 23:07:34,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 23:07:34,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 23:07:34,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 23:07:34,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 23:07:34,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 23:07:34,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 23:07:34,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 23:07:34,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 23:07:34,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 23:07:34,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 23:07:34,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 23:07:34,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 23:07:34,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 23:07:34,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 23:07:34,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 23:07:34,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 23:07:34,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 23:07:34,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 23:07:34,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 23:07:34,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 23:07:34,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 23:07:34,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 23:07:34,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 23:07:34,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 23:07:34,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 23:07:34,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 23:07:34,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 23:07:34,541 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 23:07:34,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 23:07:34,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 23:07:34,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 23:07:34,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 23:07:34,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 23:07:34,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 23:07:34,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 23:07:34,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 23:07:34,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 23:07:34,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 23:07:34,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 23:07:34,544 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 23:07:34,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 23:07:34,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 23:07:34,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 23:07:34,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 23:07:34,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 23:07:34,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 23:07:34,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 23:07:34,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 23:07:34,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 23:07:34,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 23:07:34,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 23:07:34,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 23:07:34,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c528157ad3ccc512d501b1e66086beae537118a [2020-10-25 23:07:34,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 23:07:34,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 23:07:34,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 23:07:34,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 23:07:34,999 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 23:07:35,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2020-10-25 23:07:35,085 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce7322390/c364ea93048e489bb9ff4cd5fd417558/FLAG7566807f1 [2020-10-25 23:07:35,829 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 23:07:35,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2020-10-25 23:07:35,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce7322390/c364ea93048e489bb9ff4cd5fd417558/FLAG7566807f1 [2020-10-25 23:07:36,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce7322390/c364ea93048e489bb9ff4cd5fd417558 [2020-10-25 23:07:36,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 23:07:36,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 23:07:36,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 23:07:36,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 23:07:36,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 23:07:36,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca1a03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36, skipping insertion in model container [2020-10-25 23:07:36,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 23:07:36,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 23:07:36,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:07:36,663 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 23:07:36,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 23:07:36,840 INFO L208 MainTranslator]: Completed translation [2020-10-25 23:07:36,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36 WrapperNode [2020-10-25 23:07:36,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 23:07:36,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 23:07:36,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 23:07:36,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 23:07:36,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 23:07:36,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 23:07:36,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 23:07:36,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 23:07:36,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:36,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:37,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:37,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:37,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (1/1) ... [2020-10-25 23:07:37,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 23:07:37,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 23:07:37,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 23:07:37,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 23:07:37,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (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 [2020-10-25 23:07:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 23:07:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 23:07:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 23:07:37,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 23:07:38,223 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 23:07:38,224 INFO L298 CfgBuilder]: Removed 200 assume(true) statements. [2020-10-25 23:07:38,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:07:38 BoogieIcfgContainer [2020-10-25 23:07:38,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 23:07:38,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 23:07:38,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 23:07:38,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 23:07:38,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 11:07:36" (1/3) ... [2020-10-25 23:07:38,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e18d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:07:38, skipping insertion in model container [2020-10-25 23:07:38,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 11:07:36" (2/3) ... [2020-10-25 23:07:38,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16e18d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 11:07:38, skipping insertion in model container [2020-10-25 23:07:38,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:07:38" (3/3) ... [2020-10-25 23:07:38,235 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-10-25 23:07:38,248 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 23:07:38,253 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-25 23:07:38,267 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-25 23:07:38,292 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 23:07:38,293 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 23:07:38,293 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 23:07:38,293 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 23:07:38,293 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 23:07:38,293 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 23:07:38,293 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 23:07:38,293 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 23:07:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-10-25 23:07:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 23:07:38,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:38,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:38,321 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:38,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:38,328 INFO L82 PathProgramCache]: Analyzing trace with hash 677139685, now seen corresponding path program 1 times [2020-10-25 23:07:38,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:38,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101987339] [2020-10-25 23:07:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:38,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101987339] [2020-10-25 23:07:38,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:38,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:07:38,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103075241] [2020-10-25 23:07:38,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 23:07:38,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:38,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 23:07:38,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 23:07:38,711 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 2 states. [2020-10-25 23:07:38,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:38,761 INFO L93 Difference]: Finished difference Result 255 states and 380 transitions. [2020-10-25 23:07:38,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 23:07:38,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-25 23:07:38,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:38,775 INFO L225 Difference]: With dead ends: 255 [2020-10-25 23:07:38,776 INFO L226 Difference]: Without dead ends: 125 [2020-10-25 23:07:38,780 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 [2020-10-25 23:07:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-25 23:07:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-10-25 23:07:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-25 23:07:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2020-10-25 23:07:38,836 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2020-10-25 23:07:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:38,839 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2020-10-25 23:07:38,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 23:07:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2020-10-25 23:07:38,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 23:07:38,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:38,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:38,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 23:07:38,842 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:38,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:38,845 INFO L82 PathProgramCache]: Analyzing trace with hash -369617212, now seen corresponding path program 1 times [2020-10-25 23:07:38,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:38,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976644615] [2020-10-25 23:07:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:38,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976644615] [2020-10-25 23:07:38,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:38,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 23:07:38,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276658810] [2020-10-25 23:07:38,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:07:38,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:38,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:07:38,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:07:38,986 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand 3 states. [2020-10-25 23:07:39,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:39,002 INFO L93 Difference]: Finished difference Result 125 states and 180 transitions. [2020-10-25 23:07:39,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:07:39,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 23:07:39,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:39,004 INFO L225 Difference]: With dead ends: 125 [2020-10-25 23:07:39,004 INFO L226 Difference]: Without dead ends: 51 [2020-10-25 23:07:39,006 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 [2020-10-25 23:07:39,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-25 23:07:39,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-25 23:07:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-25 23:07:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2020-10-25 23:07:39,014 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 17 [2020-10-25 23:07:39,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:39,015 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2020-10-25 23:07:39,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:07:39,015 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2020-10-25 23:07:39,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-25 23:07:39,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:39,017 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] [2020-10-25 23:07:39,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 23:07:39,017 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:39,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:39,018 INFO L82 PathProgramCache]: Analyzing trace with hash 640818778, now seen corresponding path program 1 times [2020-10-25 23:07:39,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:39,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702340027] [2020-10-25 23:07:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:39,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702340027] [2020-10-25 23:07:39,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:39,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 23:07:39,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754300081] [2020-10-25 23:07:39,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:07:39,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:39,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:07:39,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:07:39,162 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand 3 states. [2020-10-25 23:07:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:39,195 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2020-10-25 23:07:39,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:07:39,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-25 23:07:39,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:39,197 INFO L225 Difference]: With dead ends: 96 [2020-10-25 23:07:39,197 INFO L226 Difference]: Without dead ends: 51 [2020-10-25 23:07:39,198 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 [2020-10-25 23:07:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-25 23:07:39,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-25 23:07:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-25 23:07:39,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2020-10-25 23:07:39,210 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 22 [2020-10-25 23:07:39,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:39,211 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2020-10-25 23:07:39,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:07:39,211 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2020-10-25 23:07:39,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-25 23:07:39,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:39,212 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] [2020-10-25 23:07:39,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 23:07:39,213 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:39,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:39,216 INFO L82 PathProgramCache]: Analyzing trace with hash -855709928, now seen corresponding path program 1 times [2020-10-25 23:07:39,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:39,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884215215] [2020-10-25 23:07:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:39,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884215215] [2020-10-25 23:07:39,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:39,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 23:07:39,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132529253] [2020-10-25 23:07:39,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 23:07:39,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:39,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 23:07:39,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 23:07:39,327 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand 3 states. [2020-10-25 23:07:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:39,410 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2020-10-25 23:07:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 23:07:39,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-25 23:07:39,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:39,412 INFO L225 Difference]: With dead ends: 117 [2020-10-25 23:07:39,412 INFO L226 Difference]: Without dead ends: 72 [2020-10-25 23:07:39,413 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 [2020-10-25 23:07:39,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-25 23:07:39,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-25 23:07:39,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-25 23:07:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2020-10-25 23:07:39,432 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2020-10-25 23:07:39,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:39,433 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2020-10-25 23:07:39,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 23:07:39,433 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2020-10-25 23:07:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-25 23:07:39,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:39,434 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] [2020-10-25 23:07:39,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 23:07:39,435 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:39,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:39,436 INFO L82 PathProgramCache]: Analyzing trace with hash -407287284, now seen corresponding path program 1 times [2020-10-25 23:07:39,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:39,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682919892] [2020-10-25 23:07:39,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:39,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682919892] [2020-10-25 23:07:39,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:39,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:07:39,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993377921] [2020-10-25 23:07:39,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:39,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:39,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:39,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:39,535 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand 5 states. [2020-10-25 23:07:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:39,634 INFO L93 Difference]: Finished difference Result 247 states and 354 transitions. [2020-10-25 23:07:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:07:39,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-25 23:07:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:39,637 INFO L225 Difference]: With dead ends: 247 [2020-10-25 23:07:39,637 INFO L226 Difference]: Without dead ends: 183 [2020-10-25 23:07:39,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:07:39,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-25 23:07:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2020-10-25 23:07:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-25 23:07:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2020-10-25 23:07:39,655 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 30 [2020-10-25 23:07:39,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:39,655 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2020-10-25 23:07:39,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:39,656 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2020-10-25 23:07:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 23:07:39,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:39,658 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] [2020-10-25 23:07:39,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 23:07:39,658 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:39,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:39,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1879863818, now seen corresponding path program 1 times [2020-10-25 23:07:39,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:39,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327984551] [2020-10-25 23:07:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:39,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327984551] [2020-10-25 23:07:39,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:39,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 23:07:39,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138966095] [2020-10-25 23:07:39,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 23:07:39,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:39,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 23:07:39,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 23:07:39,732 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand 4 states. [2020-10-25 23:07:39,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:39,890 INFO L93 Difference]: Finished difference Result 234 states and 328 transitions. [2020-10-25 23:07:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 23:07:39,891 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-25 23:07:39,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:39,893 INFO L225 Difference]: With dead ends: 234 [2020-10-25 23:07:39,893 INFO L226 Difference]: Without dead ends: 170 [2020-10-25 23:07:39,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 23:07:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-25 23:07:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2020-10-25 23:07:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-25 23:07:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 230 transitions. [2020-10-25 23:07:39,933 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 230 transitions. Word has length 31 [2020-10-25 23:07:39,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:39,935 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 230 transitions. [2020-10-25 23:07:39,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 23:07:39,935 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 230 transitions. [2020-10-25 23:07:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 23:07:39,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:39,939 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] [2020-10-25 23:07:39,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 23:07:39,941 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:39,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:39,943 INFO L82 PathProgramCache]: Analyzing trace with hash 2138029256, now seen corresponding path program 1 times [2020-10-25 23:07:39,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:39,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181996526] [2020-10-25 23:07:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:40,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181996526] [2020-10-25 23:07:40,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:40,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:07:40,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455337281] [2020-10-25 23:07:40,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 23:07:40,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:40,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 23:07:40,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 23:07:40,027 INFO L87 Difference]: Start difference. First operand 167 states and 230 transitions. Second operand 4 states. [2020-10-25 23:07:40,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:40,117 INFO L93 Difference]: Finished difference Result 465 states and 652 transitions. [2020-10-25 23:07:40,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 23:07:40,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-25 23:07:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:40,121 INFO L225 Difference]: With dead ends: 465 [2020-10-25 23:07:40,122 INFO L226 Difference]: Without dead ends: 346 [2020-10-25 23:07:40,126 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 [2020-10-25 23:07:40,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-25 23:07:40,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 167. [2020-10-25 23:07:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-25 23:07:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2020-10-25 23:07:40,146 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 31 [2020-10-25 23:07:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:40,146 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2020-10-25 23:07:40,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 23:07:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2020-10-25 23:07:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-25 23:07:40,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:40,148 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] [2020-10-25 23:07:40,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 23:07:40,148 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:40,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:40,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1745002246, now seen corresponding path program 1 times [2020-10-25 23:07:40,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:40,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489953969] [2020-10-25 23:07:40,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:40,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489953969] [2020-10-25 23:07:40,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:40,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-25 23:07:40,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148911791] [2020-10-25 23:07:40,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 23:07:40,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:40,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 23:07:40,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:07:40,218 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand 6 states. [2020-10-25 23:07:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:40,364 INFO L93 Difference]: Finished difference Result 582 states and 811 transitions. [2020-10-25 23:07:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 23:07:40,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-25 23:07:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:40,367 INFO L225 Difference]: With dead ends: 582 [2020-10-25 23:07:40,368 INFO L226 Difference]: Without dead ends: 421 [2020-10-25 23:07:40,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-25 23:07:40,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-25 23:07:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 176. [2020-10-25 23:07:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-25 23:07:40,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 235 transitions. [2020-10-25 23:07:40,390 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 235 transitions. Word has length 31 [2020-10-25 23:07:40,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:40,390 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 235 transitions. [2020-10-25 23:07:40,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 23:07:40,390 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 235 transitions. [2020-10-25 23:07:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-25 23:07:40,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:40,392 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, 1] [2020-10-25 23:07:40,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 23:07:40,392 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:40,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1770472833, now seen corresponding path program 1 times [2020-10-25 23:07:40,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:40,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168335392] [2020-10-25 23:07:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:40,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168335392] [2020-10-25 23:07:40,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:40,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:07:40,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443463856] [2020-10-25 23:07:40,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 23:07:40,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:40,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 23:07:40,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:07:40,463 INFO L87 Difference]: Start difference. First operand 176 states and 235 transitions. Second operand 6 states. [2020-10-25 23:07:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:40,674 INFO L93 Difference]: Finished difference Result 834 states and 1114 transitions. [2020-10-25 23:07:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-25 23:07:40,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-25 23:07:40,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:40,678 INFO L225 Difference]: With dead ends: 834 [2020-10-25 23:07:40,679 INFO L226 Difference]: Without dead ends: 664 [2020-10-25 23:07:40,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-25 23:07:40,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2020-10-25 23:07:40,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 334. [2020-10-25 23:07:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-25 23:07:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 439 transitions. [2020-10-25 23:07:40,719 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 439 transitions. Word has length 34 [2020-10-25 23:07:40,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:40,720 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 439 transitions. [2020-10-25 23:07:40,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 23:07:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 439 transitions. [2020-10-25 23:07:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-25 23:07:40,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:40,722 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, 1] [2020-10-25 23:07:40,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-25 23:07:40,723 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:40,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:40,723 INFO L82 PathProgramCache]: Analyzing trace with hash 4534529, now seen corresponding path program 1 times [2020-10-25 23:07:40,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:40,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291380595] [2020-10-25 23:07:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:40,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:40,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291380595] [2020-10-25 23:07:40,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:40,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:07:40,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327959550] [2020-10-25 23:07:40,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:40,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:40,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:40,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:40,806 INFO L87 Difference]: Start difference. First operand 334 states and 439 transitions. Second operand 5 states. [2020-10-25 23:07:41,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:41,032 INFO L93 Difference]: Finished difference Result 740 states and 975 transitions. [2020-10-25 23:07:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 23:07:41,033 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-25 23:07:41,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:41,036 INFO L225 Difference]: With dead ends: 740 [2020-10-25 23:07:41,036 INFO L226 Difference]: Without dead ends: 502 [2020-10-25 23:07:41,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-25 23:07:41,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-25 23:07:41,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 328. [2020-10-25 23:07:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-25 23:07:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 427 transitions. [2020-10-25 23:07:41,076 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 427 transitions. Word has length 34 [2020-10-25 23:07:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:41,076 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 427 transitions. [2020-10-25 23:07:41,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 427 transitions. [2020-10-25 23:07:41,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-25 23:07:41,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:41,078 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-25 23:07:41,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-25 23:07:41,078 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:41,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:41,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1946639489, now seen corresponding path program 1 times [2020-10-25 23:07:41,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:41,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7168854] [2020-10-25 23:07:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-25 23:07:41,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7168854] [2020-10-25 23:07:41,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:41,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:07:41,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494550552] [2020-10-25 23:07:41,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 23:07:41,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:41,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 23:07:41,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 23:07:41,147 INFO L87 Difference]: Start difference. First operand 328 states and 427 transitions. Second operand 5 states. [2020-10-25 23:07:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:41,270 INFO L93 Difference]: Finished difference Result 745 states and 973 transitions. [2020-10-25 23:07:41,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 23:07:41,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-25 23:07:41,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:41,274 INFO L225 Difference]: With dead ends: 745 [2020-10-25 23:07:41,274 INFO L226 Difference]: Without dead ends: 423 [2020-10-25 23:07:41,275 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 [2020-10-25 23:07:41,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-25 23:07:41,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 328. [2020-10-25 23:07:41,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-25 23:07:41,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 421 transitions. [2020-10-25 23:07:41,313 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 421 transitions. Word has length 51 [2020-10-25 23:07:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:41,313 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 421 transitions. [2020-10-25 23:07:41,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 23:07:41,313 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 421 transitions. [2020-10-25 23:07:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-25 23:07:41,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:41,315 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-25 23:07:41,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-25 23:07:41,315 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:41,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1245039615, now seen corresponding path program 1 times [2020-10-25 23:07:41,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:41,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439224646] [2020-10-25 23:07:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-25 23:07:41,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439224646] [2020-10-25 23:07:41,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:41,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 23:07:41,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046384640] [2020-10-25 23:07:41,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 23:07:41,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:41,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 23:07:41,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 23:07:41,390 INFO L87 Difference]: Start difference. First operand 328 states and 421 transitions. Second operand 4 states. [2020-10-25 23:07:41,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:41,463 INFO L93 Difference]: Finished difference Result 668 states and 867 transitions. [2020-10-25 23:07:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 23:07:41,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-25 23:07:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:41,465 INFO L225 Difference]: With dead ends: 668 [2020-10-25 23:07:41,466 INFO L226 Difference]: Without dead ends: 346 [2020-10-25 23:07:41,467 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 [2020-10-25 23:07:41,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-25 23:07:41,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 262. [2020-10-25 23:07:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-25 23:07:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 335 transitions. [2020-10-25 23:07:41,509 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 335 transitions. Word has length 51 [2020-10-25 23:07:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:41,509 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 335 transitions. [2020-10-25 23:07:41,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 23:07:41,509 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 335 transitions. [2020-10-25 23:07:41,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-25 23:07:41,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:41,510 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2020-10-25 23:07:41,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-25 23:07:41,511 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:41,511 INFO L82 PathProgramCache]: Analyzing trace with hash -2094788923, now seen corresponding path program 1 times [2020-10-25 23:07:41,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:41,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208770292] [2020-10-25 23:07:41,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-25 23:07:41,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208770292] [2020-10-25 23:07:41,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 23:07:41,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 23:07:41,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324647687] [2020-10-25 23:07:41,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 23:07:41,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:41,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 23:07:41,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:07:41,588 INFO L87 Difference]: Start difference. First operand 262 states and 335 transitions. Second operand 6 states. [2020-10-25 23:07:41,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:41,795 INFO L93 Difference]: Finished difference Result 714 states and 934 transitions. [2020-10-25 23:07:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-25 23:07:41,795 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-25 23:07:41,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:41,798 INFO L225 Difference]: With dead ends: 714 [2020-10-25 23:07:41,798 INFO L226 Difference]: Without dead ends: 506 [2020-10-25 23:07:41,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-25 23:07:41,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-25 23:07:41,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 262. [2020-10-25 23:07:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-25 23:07:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 334 transitions. [2020-10-25 23:07:41,834 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 334 transitions. Word has length 52 [2020-10-25 23:07:41,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:41,834 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 334 transitions. [2020-10-25 23:07:41,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 23:07:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 334 transitions. [2020-10-25 23:07:41,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-25 23:07:41,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:41,836 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-10-25 23:07:41,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-25 23:07:41,836 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:41,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:41,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1208636850, now seen corresponding path program 1 times [2020-10-25 23:07:41,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:41,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137234902] [2020-10-25 23:07:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:41,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137234902] [2020-10-25 23:07:41,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247106818] [2020-10-25 23:07:41,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 23:07:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 23:07:42,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 23:07:42,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 23:07:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 23:07:42,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 23:07:42,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-25 23:07:42,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094014130] [2020-10-25 23:07:42,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 23:07:42,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 23:07:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 23:07:42,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-25 23:07:42,162 INFO L87 Difference]: Start difference. First operand 262 states and 334 transitions. Second operand 6 states. [2020-10-25 23:07:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 23:07:42,509 INFO L93 Difference]: Finished difference Result 805 states and 1041 transitions. [2020-10-25 23:07:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 23:07:42,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-25 23:07:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 23:07:42,512 INFO L225 Difference]: With dead ends: 805 [2020-10-25 23:07:42,513 INFO L226 Difference]: Without dead ends: 597 [2020-10-25 23:07:42,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-25 23:07:42,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-25 23:07:42,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 366. [2020-10-25 23:07:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-25 23:07:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 471 transitions. [2020-10-25 23:07:42,584 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 471 transitions. Word has length 53 [2020-10-25 23:07:42,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 23:07:42,584 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 471 transitions. [2020-10-25 23:07:42,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 23:07:42,584 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 471 transitions. [2020-10-25 23:07:42,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-25 23:07:42,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 23:07:42,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-25 23:07:42,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-25 23:07:42,799 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 23:07:42,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 23:07:42,799 INFO L82 PathProgramCache]: Analyzing trace with hash 742788065, now seen corresponding path program 2 times [2020-10-25 23:07:42,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 23:07:42,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419924222] [2020-10-25 23:07:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 23:07:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:07:42,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:07:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 23:07:42,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 23:07:43,086 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 23:07:43,088 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 23:07:43,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-25 23:07:43,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 11:07:43 BoogieIcfgContainer [2020-10-25 23:07:43,338 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 23:07:43,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 23:07:43,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 23:07:43,340 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 23:07:43,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 11:07:38" (3/4) ... [2020-10-25 23:07:43,343 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 23:07:43,575 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 23:07:43,575 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 23:07:43,577 INFO L168 Benchmark]: Toolchain (without parser) took 7480.97 ms. Allocated memory was 41.9 MB in the beginning and 121.6 MB in the end (delta: 79.7 MB). Free memory was 18.1 MB in the beginning and 73.3 MB in the end (delta: -55.2 MB). Peak memory consumption was 71.8 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:43,578 INFO L168 Benchmark]: CDTParser took 0.85 ms. Allocated memory is still 41.9 MB. Free memory is still 26.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 23:07:43,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.91 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 17.5 MB in the beginning and 27.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:43,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.84 ms. Allocated memory is still 52.4 MB. Free memory was 27.4 MB in the beginning and 34.6 MB in the end (delta: -7.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:43,580 INFO L168 Benchmark]: Boogie Preprocessor took 107.03 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 31.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:43,580 INFO L168 Benchmark]: RCFGBuilder took 1166.43 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 31.7 MB in the beginning and 43.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:43,581 INFO L168 Benchmark]: TraceAbstraction took 5110.89 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 42.6 MB in the beginning and 38.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:43,582 INFO L168 Benchmark]: Witness Printer took 235.32 ms. Allocated memory is still 121.6 MB. Free memory was 38.1 MB in the beginning and 73.3 MB in the end (delta: -35.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2020-10-25 23:07:43,584 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 ms. Allocated memory is still 41.9 MB. Free memory is still 26.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 738.91 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 17.5 MB in the beginning and 27.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 107.84 ms. Allocated memory is still 52.4 MB. Free memory was 27.4 MB in the beginning and 34.6 MB in the end (delta: -7.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 107.03 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 31.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1166.43 ms. Allocated memory was 52.4 MB in the beginning and 69.2 MB in the end (delta: 16.8 MB). Free memory was 31.7 MB in the beginning and 43.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5110.89 ms. Allocated memory was 69.2 MB in the beginning and 121.6 MB in the end (delta: 52.4 MB). Free memory was 42.6 MB in the beginning and 38.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. * Witness Printer took 235.32 ms. Allocated memory is still 121.6 MB. Free memory was 38.1 MB in the beginning and 73.3 MB in the end (delta: -35.2 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 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: [L42] int cleanupTimeShifts = 4; [L344] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L557] int pumpRunning = 0; [L558] int systemActive = 1; [L760] int waterLevel = 1; [L761] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L947] int retValue_acc ; [L950] retValue_acc = 1 [L951] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L855] int splverifierCounter ; [L856] int tmp ; [L857] int tmp___0 ; [L858] int tmp___1 ; [L859] int tmp___2 ; [L862] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L872] tmp = __VERIFIER_nondet_int() [L874] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L778] COND TRUE waterLevel < 2 [L779] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L564] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L622] COND FALSE !(\read(pumpRunning)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND TRUE ! pumpRunning [L733] int retValue_acc ; [L734] int tmp ; [L735] int tmp___0 ; [L840] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L843] COND FALSE !(waterLevel < 2) [L847] retValue_acc = 0 [L848] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L739] tmp = isHighWaterSensorDry() [L741] COND FALSE !(\read(tmp)) [L744] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L746] retValue_acc = tmp___0 [L747] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L598] tmp = isHighWaterLevel() [L600] COND TRUE \read(tmp) [L652] int tmp ; [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] tmp = isMethaneAlarm() [L658] COND FALSE !(\read(tmp)) [L647] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] tmp = getWaterLevel() [L157] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L872] tmp = __VERIFIER_nondet_int() [L874] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L564] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L766] COND TRUE waterLevel > 0 [L767] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L622] COND TRUE \read(pumpRunning) [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L624] tmp = isMethaneAlarm() [L626] COND FALSE !(\read(tmp)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L596] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L155] tmp = getWaterLevel() [L157] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L864] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L866] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L872] tmp = __VERIFIER_nondet_int() [L874] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L882] tmp___0 = __VERIFIER_nondet_int() [L884] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L892] tmp___2 = __VERIFIER_nondet_int() [L894] COND TRUE \read(tmp___2) [L755] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L564] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L766] COND TRUE waterLevel > 0 [L767] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L571] COND TRUE \read(systemActive) [L619] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L622] COND TRUE \read(pumpRunning) [L677] int retValue_acc ; [L799] int retValue_acc ; [L802] retValue_acc = methaneLevelCritical [L803] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L681] retValue_acc = isMethaneLevelCritical() [L683] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L624] tmp = isMethaneAlarm() [L626] COND FALSE !(\read(tmp)) [L593] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L596] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L150] int tmp ; [L151] int tmp___0 ; [L831] int retValue_acc ; [L834] retValue_acc = waterLevel [L835] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L155] tmp = getWaterLevel() [L157] COND TRUE tmp == 0 [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L159] tmp___0 = isPumpRunning() [L161] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L3] __assert_fail("0", "minepump_spec4_product46.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 132 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1555 SDtfs, 2199 SDslu, 2569 SDs, 0 SdLazy, 378 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 1657 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 602 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 38105 SizeOfPredicates, 4 NumberOfNonLiveVariables, 436 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 64/70 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...