./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC --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 b6d6d35826c479e1a93aed1cd13f45357e90f885 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2021-10-11 00:29:05,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:29:05,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:29:05,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:29:05,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:29:05,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:29:05,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:29:05,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:29:05,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:29:05,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:29:05,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:29:05,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:29:05,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:29:05,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:29:05,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:29:05,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:29:05,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:29:05,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:29:05,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:29:05,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:29:05,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:29:05,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:29:05,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:29:05,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:29:05,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:29:05,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:29:05,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:29:05,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:29:05,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:29:05,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:29:05,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:29:05,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:29:05,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:29:05,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:29:05,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:29:05,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:29:05,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:29:05,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:29:05,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:29:05,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:29:05,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:29:05,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:29:05,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:29:05,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:29:05,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:29:05,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:29:05,661 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:29:05,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:29:05,662 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:29:05,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:29:05,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:29:05,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:29:05,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:29:05,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:29:05,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:29:05,663 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:29:05,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:29:05,664 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:29:05,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:29:05,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:29:05,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:29:05,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:29:05,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:29:05,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:29:05,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:29:05,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:29:05,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:29:05,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:29:05,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:29:05,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:29:05,667 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6d6d35826c479e1a93aed1cd13f45357e90f885 [2021-10-11 00:29:05,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:29:06,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:29:06,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:29:06,011 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:29:06,015 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:29:06,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-10-11 00:29:06,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/data/e60d78c32/0147e2fc74404e669baf021d3e6335dd/FLAG8f3993f98 [2021-10-11 00:29:06,763 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:29:06,765 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c [2021-10-11 00:29:06,795 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/data/e60d78c32/0147e2fc74404e669baf021d3e6335dd/FLAG8f3993f98 [2021-10-11 00:29:07,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/data/e60d78c32/0147e2fc74404e669baf021d3e6335dd [2021-10-11 00:29:07,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:29:07,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:29:07,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:07,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:29:07,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:29:07,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:07" (1/1) ... [2021-10-11 00:29:07,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756dd6f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07, skipping insertion in model container [2021-10-11 00:29:07,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:29:07" (1/1) ... [2021-10-11 00:29:07,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:29:07,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:29:07,330 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[4780,4793] [2021-10-11 00:29:07,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:07,456 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:29:07,488 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/sv-benchmarks/c/product-lines/minepump_spec4_product43.cil.c[4780,4793] [2021-10-11 00:29:07,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:29:07,616 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:29:07,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07 WrapperNode [2021-10-11 00:29:07,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:29:07,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:07,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:29:07,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:29:07,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07" (1/1) ... [2021-10-11 00:29:07,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07" (1/1) ... [2021-10-11 00:29:07,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:29:07,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:29:07,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:29:07,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:29:07,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07" (1/1) ... [2021-10-11 00:29:07,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07" (1/1) ... [2021-10-11 00:29:07,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07" (1/1) ... [2021-10-11 00:29:07,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07" (1/1) ... [2021-10-11 00:29:07,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07" (1/1) ... [2021-10-11 00:29:07,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07" (1/1) ... [2021-10-11 00:29:07,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07" (1/1) ... [2021-10-11 00:29:07,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:29:07,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:29:07,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:29:07,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:29:07,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:29:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:29:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:29:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:29:07,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:29:08,909 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:29:08,910 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2021-10-11 00:29:08,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:08 BoogieIcfgContainer [2021-10-11 00:29:08,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:29:08,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:29:08,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:29:08,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:29:08,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:29:07" (1/3) ... [2021-10-11 00:29:08,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c8b2df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:08, skipping insertion in model container [2021-10-11 00:29:08,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:29:07" (2/3) ... [2021-10-11 00:29:08,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c8b2df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:29:08, skipping insertion in model container [2021-10-11 00:29:08,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:08" (3/3) ... [2021-10-11 00:29:08,926 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product43.cil.c [2021-10-11 00:29:08,940 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:29:08,943 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 00:29:08,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 00:29:08,981 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:29:08,981 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:29:08,982 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:29:08,982 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:29:08,982 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:29:08,982 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:29:08,982 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:29:08,982 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:29:08,999 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2021-10-11 00:29:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:29:09,005 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:09,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:09,007 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:09,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:09,013 INFO L82 PathProgramCache]: Analyzing trace with hash 929673937, now seen corresponding path program 1 times [2021-10-11 00:29:09,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:09,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881049443] [2021-10-11 00:29:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:09,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881049443] [2021-10-11 00:29:09,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:09,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:09,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35145289] [2021-10-11 00:29:09,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:29:09,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:09,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:29:09,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:29:09,307 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 2 states. [2021-10-11 00:29:09,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:09,365 INFO L93 Difference]: Finished difference Result 172 states and 257 transitions. [2021-10-11 00:29:09,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:29:09,367 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2021-10-11 00:29:09,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:09,392 INFO L225 Difference]: With dead ends: 172 [2021-10-11 00:29:09,392 INFO L226 Difference]: Without dead ends: 85 [2021-10-11 00:29:09,395 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 [2021-10-11 00:29:09,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-11 00:29:09,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-10-11 00:29:09,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-10-11 00:29:09,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2021-10-11 00:29:09,459 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2021-10-11 00:29:09,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:09,459 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2021-10-11 00:29:09,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:29:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2021-10-11 00:29:09,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:29:09,462 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:09,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:29:09,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:29:09,463 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:09,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:09,466 INFO L82 PathProgramCache]: Analyzing trace with hash -117082960, now seen corresponding path program 1 times [2021-10-11 00:29:09,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:09,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503966509] [2021-10-11 00:29:09,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:09,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:09,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503966509] [2021-10-11 00:29:09,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:09,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:29:09,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266241129] [2021-10-11 00:29:09,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:29:09,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:09,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:29:09,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:29:09,641 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand 3 states. [2021-10-11 00:29:09,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:09,650 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2021-10-11 00:29:09,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:29:09,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-10-11 00:29:09,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:09,652 INFO L225 Difference]: With dead ends: 85 [2021-10-11 00:29:09,652 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 00:29:09,653 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 [2021-10-11 00:29:09,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 00:29:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-11 00:29:09,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 00:29:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-10-11 00:29:09,658 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2021-10-11 00:29:09,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:09,659 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-10-11 00:29:09,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:29:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-10-11 00:29:09,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:29:09,660 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:09,660 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] [2021-10-11 00:29:09,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:29:09,661 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:09,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:09,661 INFO L82 PathProgramCache]: Analyzing trace with hash 337421565, now seen corresponding path program 1 times [2021-10-11 00:29:09,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:09,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614235417] [2021-10-11 00:29:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:09,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614235417] [2021-10-11 00:29:09,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:09,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:09,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102089179] [2021-10-11 00:29:09,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:29:09,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:09,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:29:09,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:29:09,842 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand 3 states. [2021-10-11 00:29:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:09,871 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2021-10-11 00:29:09,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:29:09,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-10-11 00:29:09,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:09,873 INFO L225 Difference]: With dead ends: 105 [2021-10-11 00:29:09,874 INFO L226 Difference]: Without dead ends: 72 [2021-10-11 00:29:09,874 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 [2021-10-11 00:29:09,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-11 00:29:09,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-10-11 00:29:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-10-11 00:29:09,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2021-10-11 00:29:09,886 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 22 [2021-10-11 00:29:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:09,886 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2021-10-11 00:29:09,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:29:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2021-10-11 00:29:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:29:09,887 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:09,888 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] [2021-10-11 00:29:09,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:29:09,888 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:09,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:09,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1224569535, now seen corresponding path program 1 times [2021-10-11 00:29:09,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:09,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782518966] [2021-10-11 00:29:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:09,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782518966] [2021-10-11 00:29:09,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:09,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:29:09,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778825949] [2021-10-11 00:29:09,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:29:09,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:09,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:29:09,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:29:09,984 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand 3 states. [2021-10-11 00:29:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:10,039 INFO L93 Difference]: Finished difference Result 171 states and 254 transitions. [2021-10-11 00:29:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:29:10,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-10-11 00:29:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:10,042 INFO L225 Difference]: With dead ends: 171 [2021-10-11 00:29:10,042 INFO L226 Difference]: Without dead ends: 109 [2021-10-11 00:29:10,043 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 [2021-10-11 00:29:10,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-11 00:29:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2021-10-11 00:29:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2021-10-11 00:29:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions. [2021-10-11 00:29:10,073 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 23 [2021-10-11 00:29:10,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:10,074 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 155 transitions. [2021-10-11 00:29:10,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:29:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions. [2021-10-11 00:29:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-11 00:29:10,075 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:10,075 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] [2021-10-11 00:29:10,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:29:10,076 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:10,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:10,076 INFO L82 PathProgramCache]: Analyzing trace with hash -840484654, now seen corresponding path program 1 times [2021-10-11 00:29:10,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:10,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339072579] [2021-10-11 00:29:10,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:10,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339072579] [2021-10-11 00:29:10,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:10,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:10,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611479975] [2021-10-11 00:29:10,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:29:10,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:10,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:29:10,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:10,197 INFO L87 Difference]: Start difference. First operand 107 states and 155 transitions. Second operand 5 states. [2021-10-11 00:29:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:10,305 INFO L93 Difference]: Finished difference Result 399 states and 585 transitions. [2021-10-11 00:29:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:29:10,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2021-10-11 00:29:10,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:10,309 INFO L225 Difference]: With dead ends: 399 [2021-10-11 00:29:10,319 INFO L226 Difference]: Without dead ends: 298 [2021-10-11 00:29:10,321 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 [2021-10-11 00:29:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-11 00:29:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 194. [2021-10-11 00:29:10,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2021-10-11 00:29:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 272 transitions. [2021-10-11 00:29:10,377 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 272 transitions. Word has length 25 [2021-10-11 00:29:10,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:10,377 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 272 transitions. [2021-10-11 00:29:10,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:29:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 272 transitions. [2021-10-11 00:29:10,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-11 00:29:10,379 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:10,379 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] [2021-10-11 00:29:10,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:29:10,395 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:10,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:10,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1495173652, now seen corresponding path program 1 times [2021-10-11 00:29:10,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:10,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057062041] [2021-10-11 00:29:10,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:10,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057062041] [2021-10-11 00:29:10,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:10,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:10,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550628464] [2021-10-11 00:29:10,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:29:10,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:10,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:29:10,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:10,533 INFO L87 Difference]: Start difference. First operand 194 states and 272 transitions. Second operand 5 states. [2021-10-11 00:29:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:10,695 INFO L93 Difference]: Finished difference Result 398 states and 570 transitions. [2021-10-11 00:29:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:29:10,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-10-11 00:29:10,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:10,703 INFO L225 Difference]: With dead ends: 398 [2021-10-11 00:29:10,704 INFO L226 Difference]: Without dead ends: 396 [2021-10-11 00:29:10,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:29:10,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-11 00:29:10,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 194. [2021-10-11 00:29:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2021-10-11 00:29:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 270 transitions. [2021-10-11 00:29:10,767 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 270 transitions. Word has length 26 [2021-10-11 00:29:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:10,768 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 270 transitions. [2021-10-11 00:29:10,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:29:10,771 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 270 transitions. [2021-10-11 00:29:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 00:29:10,773 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:10,774 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] [2021-10-11 00:29:10,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:29:10,775 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:10,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:10,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1499969411, now seen corresponding path program 1 times [2021-10-11 00:29:10,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:10,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671980624] [2021-10-11 00:29:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:10,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671980624] [2021-10-11 00:29:10,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:10,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:29:10,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021609518] [2021-10-11 00:29:10,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:10,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:10,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:10,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:10,891 INFO L87 Difference]: Start difference. First operand 194 states and 270 transitions. Second operand 4 states. [2021-10-11 00:29:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:10,992 INFO L93 Difference]: Finished difference Result 392 states and 557 transitions. [2021-10-11 00:29:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:29:10,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2021-10-11 00:29:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:10,995 INFO L225 Difference]: With dead ends: 392 [2021-10-11 00:29:10,995 INFO L226 Difference]: Without dead ends: 291 [2021-10-11 00:29:10,996 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 [2021-10-11 00:29:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-11 00:29:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2021-10-11 00:29:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 00:29:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 399 transitions. [2021-10-11 00:29:11,018 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 399 transitions. Word has length 33 [2021-10-11 00:29:11,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:11,018 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 399 transitions. [2021-10-11 00:29:11,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:11,018 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 399 transitions. [2021-10-11 00:29:11,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 00:29:11,020 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:11,020 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] [2021-10-11 00:29:11,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:29:11,021 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:11,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:11,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1515134207, now seen corresponding path program 1 times [2021-10-11 00:29:11,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:11,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830253765] [2021-10-11 00:29:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:11,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830253765] [2021-10-11 00:29:11,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:11,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:29:11,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149857185] [2021-10-11 00:29:11,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:29:11,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:11,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:29:11,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:29:11,086 INFO L87 Difference]: Start difference. First operand 287 states and 399 transitions. Second operand 4 states. [2021-10-11 00:29:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:11,152 INFO L93 Difference]: Finished difference Result 817 states and 1156 transitions. [2021-10-11 00:29:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:29:11,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2021-10-11 00:29:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:11,157 INFO L225 Difference]: With dead ends: 817 [2021-10-11 00:29:11,157 INFO L226 Difference]: Without dead ends: 621 [2021-10-11 00:29:11,158 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 [2021-10-11 00:29:11,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-10-11 00:29:11,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 287. [2021-10-11 00:29:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 00:29:11,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 397 transitions. [2021-10-11 00:29:11,190 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 397 transitions. Word has length 33 [2021-10-11 00:29:11,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:11,190 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 397 transitions. [2021-10-11 00:29:11,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:29:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 397 transitions. [2021-10-11 00:29:11,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-11 00:29:11,192 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:11,192 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] [2021-10-11 00:29:11,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:29:11,192 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:11,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:11,193 INFO L82 PathProgramCache]: Analyzing trace with hash 928328193, now seen corresponding path program 1 times [2021-10-11 00:29:11,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:11,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565709835] [2021-10-11 00:29:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:11,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565709835] [2021-10-11 00:29:11,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:11,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:29:11,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876473069] [2021-10-11 00:29:11,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:29:11,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:11,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:29:11,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:11,276 INFO L87 Difference]: Start difference. First operand 287 states and 397 transitions. Second operand 5 states. [2021-10-11 00:29:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:11,419 INFO L93 Difference]: Finished difference Result 609 states and 854 transitions. [2021-10-11 00:29:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:29:11,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2021-10-11 00:29:11,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:11,423 INFO L225 Difference]: With dead ends: 609 [2021-10-11 00:29:11,423 INFO L226 Difference]: Without dead ends: 413 [2021-10-11 00:29:11,424 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 [2021-10-11 00:29:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-10-11 00:29:11,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 318. [2021-10-11 00:29:11,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2021-10-11 00:29:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 443 transitions. [2021-10-11 00:29:11,452 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 443 transitions. Word has length 33 [2021-10-11 00:29:11,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:11,453 INFO L481 AbstractCegarLoop]: Abstraction has 318 states and 443 transitions. [2021-10-11 00:29:11,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:29:11,453 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 443 transitions. [2021-10-11 00:29:11,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-11 00:29:11,454 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:11,455 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] [2021-10-11 00:29:11,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 00:29:11,455 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:11,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:11,456 INFO L82 PathProgramCache]: Analyzing trace with hash -108849228, now seen corresponding path program 1 times [2021-10-11 00:29:11,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:11,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804473863] [2021-10-11 00:29:11,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 00:29:11,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804473863] [2021-10-11 00:29:11,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:11,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:29:11,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240551933] [2021-10-11 00:29:11,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:29:11,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:11,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:29:11,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:11,531 INFO L87 Difference]: Start difference. First operand 318 states and 443 transitions. Second operand 5 states. [2021-10-11 00:29:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:11,619 INFO L93 Difference]: Finished difference Result 902 states and 1251 transitions. [2021-10-11 00:29:11,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:29:11,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2021-10-11 00:29:11,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:11,628 INFO L225 Difference]: With dead ends: 902 [2021-10-11 00:29:11,628 INFO L226 Difference]: Without dead ends: 590 [2021-10-11 00:29:11,630 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 [2021-10-11 00:29:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-11 00:29:11,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 330. [2021-10-11 00:29:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 330 states. [2021-10-11 00:29:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 455 transitions. [2021-10-11 00:29:11,663 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 455 transitions. Word has length 47 [2021-10-11 00:29:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:11,665 INFO L481 AbstractCegarLoop]: Abstraction has 330 states and 455 transitions. [2021-10-11 00:29:11,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:29:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 455 transitions. [2021-10-11 00:29:11,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-11 00:29:11,666 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:11,667 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] [2021-10-11 00:29:11,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 00:29:11,667 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:11,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:11,668 INFO L82 PathProgramCache]: Analyzing trace with hash -618322318, now seen corresponding path program 1 times [2021-10-11 00:29:11,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:11,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503878220] [2021-10-11 00:29:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 00:29:11,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503878220] [2021-10-11 00:29:11,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:29:11,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:29:11,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518881517] [2021-10-11 00:29:11,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:29:11,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:11,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:29:11,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:29:11,740 INFO L87 Difference]: Start difference. First operand 330 states and 455 transitions. Second operand 5 states. [2021-10-11 00:29:11,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:11,830 INFO L93 Difference]: Finished difference Result 713 states and 973 transitions. [2021-10-11 00:29:11,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:29:11,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2021-10-11 00:29:11,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:11,834 INFO L225 Difference]: With dead ends: 713 [2021-10-11 00:29:11,834 INFO L226 Difference]: Without dead ends: 389 [2021-10-11 00:29:11,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:29:11,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-10-11 00:29:11,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 261. [2021-10-11 00:29:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2021-10-11 00:29:11,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 351 transitions. [2021-10-11 00:29:11,869 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 351 transitions. Word has length 47 [2021-10-11 00:29:11,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:11,870 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 351 transitions. [2021-10-11 00:29:11,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:29:11,870 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 351 transitions. [2021-10-11 00:29:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-11 00:29:11,871 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:11,871 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] [2021-10-11 00:29:11,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 00:29:11,871 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:11,872 INFO L82 PathProgramCache]: Analyzing trace with hash -423849614, now seen corresponding path program 1 times [2021-10-11 00:29:11,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:11,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948988912] [2021-10-11 00:29:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:11,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948988912] [2021-10-11 00:29:11,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346221529] [2021-10-11 00:29:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:29:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:29:12,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:29:12,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:29:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:29:12,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:29:12,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-11 00:29:12,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856183619] [2021-10-11 00:29:12,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:29:12,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:29:12,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:29:12,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:29:12,282 INFO L87 Difference]: Start difference. First operand 261 states and 351 transitions. Second operand 6 states. [2021-10-11 00:29:12,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:29:12,499 INFO L93 Difference]: Finished difference Result 735 states and 1011 transitions. [2021-10-11 00:29:12,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:29:12,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2021-10-11 00:29:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:29:12,504 INFO L225 Difference]: With dead ends: 735 [2021-10-11 00:29:12,504 INFO L226 Difference]: Without dead ends: 534 [2021-10-11 00:29:12,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-11 00:29:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-10-11 00:29:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 321. [2021-10-11 00:29:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2021-10-11 00:29:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 433 transitions. [2021-10-11 00:29:12,550 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 433 transitions. Word has length 48 [2021-10-11 00:29:12,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:29:12,551 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 433 transitions. [2021-10-11 00:29:12,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:29:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 433 transitions. [2021-10-11 00:29:12,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-11 00:29:12,553 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:29:12,553 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 00:29:12,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 00:29:12,779 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:29:12,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:29:12,780 INFO L82 PathProgramCache]: Analyzing trace with hash -568509983, now seen corresponding path program 2 times [2021-10-11 00:29:12,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:29:12,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718023386] [2021-10-11 00:29:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:29:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:12,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:29:12,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:29:13,070 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:29:13,071 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:29:13,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 00:29:13,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:29:13 BoogieIcfgContainer [2021-10-11 00:29:13,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:29:13,297 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:29:13,297 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:29:13,297 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:29:13,298 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:29:08" (3/4) ... [2021-10-11 00:29:13,300 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:29:13,473 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34976821-2d1b-471f-a312-f2f46d1b58d1/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:29:13,473 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:29:13,475 INFO L168 Benchmark]: Toolchain (without parser) took 6454.28 ms. Allocated memory was 100.7 MB in the beginning and 167.8 MB in the end (delta: 67.1 MB). Free memory was 69.6 MB in the beginning and 78.2 MB in the end (delta: -8.6 MB). Peak memory consumption was 57.7 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:13,475 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 100.7 MB. Free memory was 57.2 MB in the beginning and 57.1 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:29:13,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.69 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.3 MB in the beginning and 86.9 MB in the end (delta: -17.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:13,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.60 ms. Allocated memory is still 121.6 MB. Free memory was 86.9 MB in the beginning and 83.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:13,478 INFO L168 Benchmark]: Boogie Preprocessor took 43.68 ms. Allocated memory is still 121.6 MB. Free memory was 83.5 MB in the beginning and 81.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:13,480 INFO L168 Benchmark]: RCFGBuilder took 1167.80 ms. Allocated memory is still 121.6 MB. Free memory was 81.4 MB in the beginning and 80.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:13,480 INFO L168 Benchmark]: TraceAbstraction took 4379.32 ms. Allocated memory was 121.6 MB in the beginning and 167.8 MB in the end (delta: 46.1 MB). Free memory was 79.2 MB in the beginning and 103.4 MB in the end (delta: -24.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:13,481 INFO L168 Benchmark]: Witness Printer took 176.17 ms. Allocated memory is still 167.8 MB. Free memory was 103.4 MB in the beginning and 78.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:29:13,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 100.7 MB. Free memory was 57.2 MB in the beginning and 57.1 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 598.69 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.3 MB in the beginning and 86.9 MB in the end (delta: -17.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.60 ms. Allocated memory is still 121.6 MB. Free memory was 86.9 MB in the beginning and 83.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.68 ms. Allocated memory is still 121.6 MB. Free memory was 83.5 MB in the beginning and 81.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1167.80 ms. Allocated memory is still 121.6 MB. Free memory was 81.4 MB in the beginning and 80.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4379.32 ms. Allocated memory was 121.6 MB in the beginning and 167.8 MB in the end (delta: 46.1 MB). Free memory was 79.2 MB in the beginning and 103.4 MB in the end (delta: -24.1 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * Witness Printer took 176.17 ms. Allocated memory is still 167.8 MB. Free memory was 103.4 MB in the beginning and 78.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 312]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L122] int pumpRunning = 0; [L123] int systemActive = 1; [L317] int cleanupTimeShifts = 4; [L417] int waterLevel = 1; [L418] int methaneLevelCritical = 0; [L715] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L393] int retValue_acc ; [L394] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L537] int retValue_acc ; [L540] retValue_acc = 1 [L541] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L400] tmp = valid_product() [L402] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L435] COND TRUE waterLevel < 2 [L436] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L162] COND TRUE ! pumpRunning [L274] int retValue_acc ; [L275] int tmp ; [L276] int tmp___0 ; [L497] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L500] COND FALSE !(waterLevel < 2) [L504] retValue_acc = 0 [L505] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L280] tmp = isHighWaterSensorDry() [L282] COND FALSE !(\read(tmp)) [L285] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L287] retValue_acc = tmp___0 [L288] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] tmp = isHighWaterLevel() [L166] COND TRUE \read(tmp) [L193] int tmp ; [L218] int retValue_acc ; [L456] int retValue_acc ; [L459] retValue_acc = methaneLevelCritical [L460] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L222] retValue_acc = isMethaneLevelCritical() [L224] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] tmp = isMethaneAlarm() [L199] COND FALSE !(\read(tmp)) [L187] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L918] tmp = getWaterLevel() [L920] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L130] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L423] COND TRUE waterLevel > 0 [L424] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L162] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L918] tmp = getWaterLevel() [L920] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L130] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L423] COND TRUE waterLevel > 0 [L424] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L137] COND TRUE \read(systemActive) [L159] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L162] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L913] int tmp ; [L914] int tmp___0 ; [L488] int retValue_acc ; [L491] retValue_acc = waterLevel [L492] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L918] tmp = getWaterLevel() [L920] COND TRUE tmp == 0 [L229] int retValue_acc ; [L232] retValue_acc = pumpRunning [L233] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L922] tmp___0 = isPumpRunning() [L924] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L312] 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, 89 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1093 SDtfs, 1254 SDslu, 1597 SDs, 0 SdLazy, 237 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 1346 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 481 NumberOfCodeBlocks, 481 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 26739 SizeOfPredicates, 3 NumberOfNonLiveVariables, 413 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 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...