./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product50.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_9af16c92-e27b-4c87-844e-a36a7f0c17fc/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/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_9af16c92-e27b-4c87-844e-a36a7f0c17fc/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/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_9af16c92-e27b-4c87-844e-a36a7f0c17fc/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 46490a57ce91137af910512252196515ce511def ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:32:15,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:32:15,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:32:15,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:32:15,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:32:15,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:32:15,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:32:15,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:32:15,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:32:15,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:32:15,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:32:15,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:32:15,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:32:15,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:32:15,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:32:15,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:32:15,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:32:15,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:32:15,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:32:15,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:32:15,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:32:15,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:32:15,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:32:15,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:32:15,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:32:15,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:32:15,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:32:15,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:32:15,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:32:15,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:32:15,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:32:15,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:32:15,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:32:15,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:32:15,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:32:15,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:32:15,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:32:15,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:32:15,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:32:15,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:32:15,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:32:15,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:32:15,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:32:15,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:32:15,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:32:15,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:32:15,762 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:32:15,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:32:15,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:32:15,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:32:15,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:32:15,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:32:15,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:32:15,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:32:15,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:32:15,764 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:32:15,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:32:15,764 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:32:15,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:32:15,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:32:15,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:32:15,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:32:15,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:32:15,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:32:15,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:32:15,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:32:15,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:32:15,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:32:15,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:32:15,767 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:32:15,767 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_9af16c92-e27b-4c87-844e-a36a7f0c17fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46490a57ce91137af910512252196515ce511def [2021-10-11 00:32:16,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:32:16,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:32:16,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:32:16,124 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:32:16,125 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:32:16,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2021-10-11 00:32:16,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/bin/uautomizer-Z5i5R5N3CC/data/63affb18d/1923b11fb9454ac3adc809030efdec23/FLAG8a17bd7fb [2021-10-11 00:32:16,865 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:32:16,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2021-10-11 00:32:16,883 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/bin/uautomizer-Z5i5R5N3CC/data/63affb18d/1923b11fb9454ac3adc809030efdec23/FLAG8a17bd7fb [2021-10-11 00:32:17,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/bin/uautomizer-Z5i5R5N3CC/data/63affb18d/1923b11fb9454ac3adc809030efdec23 [2021-10-11 00:32:17,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:32:17,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:32:17,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:32:17,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:32:17,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:32:17,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:32:17" (1/1) ... [2021-10-11 00:32:17,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a1852e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17, skipping insertion in model container [2021-10-11 00:32:17,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:32:17" (1/1) ... [2021-10-11 00:32:17,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:32:17,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:32:17,392 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_9af16c92-e27b-4c87-844e-a36a7f0c17fc/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c[5930,5943] [2021-10-11 00:32:17,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:32:17,539 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:32:17,624 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_9af16c92-e27b-4c87-844e-a36a7f0c17fc/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c[5930,5943] [2021-10-11 00:32:17,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:32:17,762 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:32:17,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17 WrapperNode [2021-10-11 00:32:17,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:32:17,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:32:17,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:32:17,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:32:17,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17" (1/1) ... [2021-10-11 00:32:17,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17" (1/1) ... [2021-10-11 00:32:17,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:32:17,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:32:17,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:32:17,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:32:17,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17" (1/1) ... [2021-10-11 00:32:17,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17" (1/1) ... [2021-10-11 00:32:17,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17" (1/1) ... [2021-10-11 00:32:17,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17" (1/1) ... [2021-10-11 00:32:17,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17" (1/1) ... [2021-10-11 00:32:17,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17" (1/1) ... [2021-10-11 00:32:17,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17" (1/1) ... [2021-10-11 00:32:17,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:32:17,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:32:17,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:32:17,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:32:17,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/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 00:32:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:32:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:32:18,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:32:18,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:32:19,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:32:19,310 INFO L299 CfgBuilder]: Removed 158 assume(true) statements. [2021-10-11 00:32:19,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:19 BoogieIcfgContainer [2021-10-11 00:32:19,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:32:19,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:32:19,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:32:19,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:32:19,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:32:17" (1/3) ... [2021-10-11 00:32:19,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c99baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:32:19, skipping insertion in model container [2021-10-11 00:32:19,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:32:17" (2/3) ... [2021-10-11 00:32:19,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c99baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:32:19, skipping insertion in model container [2021-10-11 00:32:19,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:19" (3/3) ... [2021-10-11 00:32:19,324 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2021-10-11 00:32:19,343 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:32:19,348 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 00:32:19,369 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 00:32:19,399 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:32:19,400 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:32:19,400 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:32:19,400 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:32:19,400 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:32:19,400 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:32:19,401 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:32:19,401 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:32:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2021-10-11 00:32:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:32:19,429 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:19,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:32:19,430 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:19,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:19,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1800894747, now seen corresponding path program 1 times [2021-10-11 00:32:19,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:19,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284449626] [2021-10-11 00:32:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:19,761 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 00:32:19,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284449626] [2021-10-11 00:32:19,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:19,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:32:19,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962218611] [2021-10-11 00:32:19,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:32:19,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:19,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:32:19,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:32:19,788 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 2 states. [2021-10-11 00:32:19,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:19,825 INFO L93 Difference]: Finished difference Result 228 states and 347 transitions. [2021-10-11 00:32:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:32:19,827 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2021-10-11 00:32:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:19,849 INFO L225 Difference]: With dead ends: 228 [2021-10-11 00:32:19,849 INFO L226 Difference]: Without dead ends: 113 [2021-10-11 00:32:19,853 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 00:32:19,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-11 00:32:19,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-10-11 00:32:19,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2021-10-11 00:32:19,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 165 transitions. [2021-10-11 00:32:19,906 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 165 transitions. Word has length 16 [2021-10-11 00:32:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:19,907 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 165 transitions. [2021-10-11 00:32:19,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:32:19,907 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 165 transitions. [2021-10-11 00:32:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:32:19,909 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:19,909 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 00:32:19,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:32:19,909 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:19,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:19,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1447315652, now seen corresponding path program 1 times [2021-10-11 00:32:19,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:19,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433004434] [2021-10-11 00:32:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,081 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 00:32:20,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433004434] [2021-10-11 00:32:20,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:32:20,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213762218] [2021-10-11 00:32:20,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:32:20,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:32:20,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:32:20,085 INFO L87 Difference]: Start difference. First operand 113 states and 165 transitions. Second operand 3 states. [2021-10-11 00:32:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,104 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2021-10-11 00:32:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:32:20,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-10-11 00:32:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,113 INFO L225 Difference]: With dead ends: 113 [2021-10-11 00:32:20,114 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 00:32:20,115 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 00:32:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 00:32:20,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-11 00:32:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 00:32:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2021-10-11 00:32:20,122 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2021-10-11 00:32:20,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,122 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2021-10-11 00:32:20,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:32:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2021-10-11 00:32:20,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:32:20,124 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,124 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 00:32:20,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:32:20,127 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,130 INFO L82 PathProgramCache]: Analyzing trace with hash -230586389, now seen corresponding path program 1 times [2021-10-11 00:32:20,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559615227] [2021-10-11 00:32:20,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,300 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 00:32:20,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559615227] [2021-10-11 00:32:20,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:32:20,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18309522] [2021-10-11 00:32:20,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:20,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:20,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:20,302 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 5 states. [2021-10-11 00:32:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,347 INFO L93 Difference]: Finished difference Result 88 states and 130 transitions. [2021-10-11 00:32:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:32:20,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-10-11 00:32:20,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,349 INFO L225 Difference]: With dead ends: 88 [2021-10-11 00:32:20,349 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 00:32:20,350 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 00:32:20,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 00:32:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-11 00:32:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 00:32:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 67 transitions. [2021-10-11 00:32:20,356 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 67 transitions. Word has length 22 [2021-10-11 00:32:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,357 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 67 transitions. [2021-10-11 00:32:20,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 67 transitions. [2021-10-11 00:32:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 00:32:20,358 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,358 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] [2021-10-11 00:32:20,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:32:20,359 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,360 INFO L82 PathProgramCache]: Analyzing trace with hash -108421843, now seen corresponding path program 1 times [2021-10-11 00:32:20,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352114347] [2021-10-11 00:32:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,423 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 00:32:20,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352114347] [2021-10-11 00:32:20,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:32:20,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829039736] [2021-10-11 00:32:20,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:32:20,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:32:20,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:32:20,426 INFO L87 Difference]: Start difference. First operand 47 states and 67 transitions. Second operand 3 states. [2021-10-11 00:32:20,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,476 INFO L93 Difference]: Finished difference Result 109 states and 158 transitions. [2021-10-11 00:32:20,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:32:20,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-10-11 00:32:20,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,478 INFO L225 Difference]: With dead ends: 109 [2021-10-11 00:32:20,478 INFO L226 Difference]: Without dead ends: 68 [2021-10-11 00:32:20,479 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 00:32:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-11 00:32:20,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-10-11 00:32:20,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-10-11 00:32:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2021-10-11 00:32:20,490 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 24 [2021-10-11 00:32:20,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,491 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2021-10-11 00:32:20,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:32:20,491 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2021-10-11 00:32:20,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 00:32:20,493 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,493 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] [2021-10-11 00:32:20,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:32:20,493 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1619186466, now seen corresponding path program 1 times [2021-10-11 00:32:20,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38879085] [2021-10-11 00:32:20,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,584 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 00:32:20,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38879085] [2021-10-11 00:32:20,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:32:20,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087303757] [2021-10-11 00:32:20,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:20,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:20,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:20,587 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand 5 states. [2021-10-11 00:32:20,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,700 INFO L93 Difference]: Finished difference Result 175 states and 245 transitions. [2021-10-11 00:32:20,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:32:20,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2021-10-11 00:32:20,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,708 INFO L225 Difference]: With dead ends: 175 [2021-10-11 00:32:20,708 INFO L226 Difference]: Without dead ends: 115 [2021-10-11 00:32:20,711 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 00:32:20,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-11 00:32:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 72. [2021-10-11 00:32:20,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-10-11 00:32:20,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2021-10-11 00:32:20,735 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 30 [2021-10-11 00:32:20,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,736 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2021-10-11 00:32:20,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:20,736 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2021-10-11 00:32:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 00:32:20,744 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,744 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] [2021-10-11 00:32:20,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:32:20,744 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1043324577, now seen corresponding path program 1 times [2021-10-11 00:32:20,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408626753] [2021-10-11 00:32:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,808 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 00:32:20,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408626753] [2021-10-11 00:32:20,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:32:20,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027527538] [2021-10-11 00:32:20,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:20,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:20,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:20,810 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand 5 states. [2021-10-11 00:32:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:20,894 INFO L93 Difference]: Finished difference Result 382 states and 538 transitions. [2021-10-11 00:32:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:32:20,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2021-10-11 00:32:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:20,897 INFO L225 Difference]: With dead ends: 382 [2021-10-11 00:32:20,898 INFO L226 Difference]: Without dead ends: 316 [2021-10-11 00:32:20,898 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 00:32:20,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-11 00:32:20,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 132. [2021-10-11 00:32:20,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-10-11 00:32:20,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 181 transitions. [2021-10-11 00:32:20,918 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 181 transitions. Word has length 30 [2021-10-11 00:32:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:20,918 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 181 transitions. [2021-10-11 00:32:20,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:20,918 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 181 transitions. [2021-10-11 00:32:20,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 00:32:20,919 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:20,920 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] [2021-10-11 00:32:20,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:32:20,920 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:20,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:20,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1715093079, now seen corresponding path program 1 times [2021-10-11 00:32:20,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:20,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65082693] [2021-10-11 00:32:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:20,981 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 00:32:20,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65082693] [2021-10-11 00:32:20,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:20,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:32:20,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619335316] [2021-10-11 00:32:20,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:32:20,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:20,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:32:20,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:32:20,983 INFO L87 Difference]: Start difference. First operand 132 states and 181 transitions. Second operand 5 states. [2021-10-11 00:32:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:21,137 INFO L93 Difference]: Finished difference Result 378 states and 520 transitions. [2021-10-11 00:32:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 00:32:21,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2021-10-11 00:32:21,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:21,142 INFO L225 Difference]: With dead ends: 378 [2021-10-11 00:32:21,142 INFO L226 Difference]: Without dead ends: 376 [2021-10-11 00:32:21,144 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 00:32:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-10-11 00:32:21,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 132. [2021-10-11 00:32:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2021-10-11 00:32:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2021-10-11 00:32:21,175 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 31 [2021-10-11 00:32:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:21,175 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2021-10-11 00:32:21,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:32:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2021-10-11 00:32:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 00:32:21,177 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:21,177 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] [2021-10-11 00:32:21,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:32:21,177 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:21,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:21,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1340444974, now seen corresponding path program 1 times [2021-10-11 00:32:21,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:21,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925663787] [2021-10-11 00:32:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:21,246 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 00:32:21,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925663787] [2021-10-11 00:32:21,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:21,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:32:21,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670696559] [2021-10-11 00:32:21,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:32:21,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:21,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:32:21,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:32:21,248 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand 6 states. [2021-10-11 00:32:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:21,351 INFO L93 Difference]: Finished difference Result 354 states and 478 transitions. [2021-10-11 00:32:21,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:32:21,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2021-10-11 00:32:21,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:21,353 INFO L225 Difference]: With dead ends: 354 [2021-10-11 00:32:21,353 INFO L226 Difference]: Without dead ends: 228 [2021-10-11 00:32:21,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:32:21,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-11 00:32:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 140. [2021-10-11 00:32:21,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-10-11 00:32:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2021-10-11 00:32:21,373 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 31 [2021-10-11 00:32:21,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:21,373 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2021-10-11 00:32:21,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:32:21,373 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2021-10-11 00:32:21,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-11 00:32:21,374 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:21,375 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] [2021-10-11 00:32:21,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 00:32:21,375 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:21,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:21,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1082279536, now seen corresponding path program 1 times [2021-10-11 00:32:21,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:21,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149697362] [2021-10-11 00:32:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:32:21,423 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 00:32:21,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149697362] [2021-10-11 00:32:21,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:32:21,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:32:21,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102557365] [2021-10-11 00:32:21,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:32:21,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:32:21,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:32:21,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:32:21,429 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand 3 states. [2021-10-11 00:32:21,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:32:21,474 INFO L93 Difference]: Finished difference Result 324 states and 434 transitions. [2021-10-11 00:32:21,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:32:21,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2021-10-11 00:32:21,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:32:21,476 INFO L225 Difference]: With dead ends: 324 [2021-10-11 00:32:21,476 INFO L226 Difference]: Without dead ends: 190 [2021-10-11 00:32:21,477 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 00:32:21,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-11 00:32:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-10-11 00:32:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2021-10-11 00:32:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 248 transitions. [2021-10-11 00:32:21,517 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 248 transitions. Word has length 31 [2021-10-11 00:32:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:32:21,519 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 248 transitions. [2021-10-11 00:32:21,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:32:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 248 transitions. [2021-10-11 00:32:21,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-11 00:32:21,523 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:32:21,523 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] [2021-10-11 00:32:21,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 00:32:21,524 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:32:21,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:32:21,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1099927890, now seen corresponding path program 1 times [2021-10-11 00:32:21,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:32:21,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532261429] [2021-10-11 00:32:21,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:32:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:32:21,640 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:32:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:32:21,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:32:21,784 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:32:21,785 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:32:21,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 00:32:21,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:32:21 BoogieIcfgContainer [2021-10-11 00:32:21,945 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:32:21,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:32:21,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:32:21,946 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:32:21,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:32:19" (3/4) ... [2021-10-11 00:32:21,952 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:32:22,102 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9af16c92-e27b-4c87-844e-a36a7f0c17fc/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:32:22,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:32:22,105 INFO L168 Benchmark]: Toolchain (without parser) took 5029.08 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 95.5 MB in the beginning and 69.4 MB in the end (delta: 26.0 MB). Peak memory consumption was 52.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:22,106 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 86.0 MB. Free memory was 59.6 MB in the beginning and 59.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:32:22,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.45 ms. Allocated memory is still 119.5 MB. Free memory was 95.5 MB in the beginning and 74.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:22,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.35 ms. Allocated memory is still 119.5 MB. Free memory was 74.7 MB in the beginning and 71.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:22,107 INFO L168 Benchmark]: Boogie Preprocessor took 49.99 ms. Allocated memory is still 119.5 MB. Free memory was 71.0 MB in the beginning and 68.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:22,108 INFO L168 Benchmark]: RCFGBuilder took 1392.95 ms. Allocated memory is still 119.5 MB. Free memory was 68.1 MB in the beginning and 74.2 MB in the end (delta: -6.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:22,110 INFO L168 Benchmark]: TraceAbstraction took 2629.75 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 73.7 MB in the beginning and 82.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:22,111 INFO L168 Benchmark]: Witness Printer took 157.27 ms. Allocated memory is still 144.7 MB. Free memory was 82.0 MB in the beginning and 69.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:32:22,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 86.0 MB. Free memory was 59.6 MB in the beginning and 59.5 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 686.45 ms. Allocated memory is still 119.5 MB. Free memory was 95.5 MB in the beginning and 74.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.35 ms. Allocated memory is still 119.5 MB. Free memory was 74.7 MB in the beginning and 71.0 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.99 ms. Allocated memory is still 119.5 MB. Free memory was 71.0 MB in the beginning and 68.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1392.95 ms. Allocated memory is still 119.5 MB. Free memory was 68.1 MB in the beginning and 74.2 MB in the end (delta: -6.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2629.75 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 73.7 MB in the beginning and 82.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Witness Printer took 157.27 ms. Allocated memory is still 144.7 MB. Free memory was 82.0 MB in the beginning and 69.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 390]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L78] int waterLevel = 1; [L79] int methaneLevelCritical = 0; [L181] int cleanupTimeShifts = 4; [L397] int pumpRunning = 0; [L398] int systemActive = 1; [L771] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L260] int retValue_acc ; [L261] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L309] int retValue_acc ; [L312] retValue_acc = 1 [L313] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L267] tmp = valid_product() [L269] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L320] int splverifierCounter ; [L321] int tmp ; [L322] int tmp___0 ; [L323] int tmp___1 ; [L324] int tmp___2 ; [L327] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L329] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L331] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L337] tmp = __VERIFIER_nondet_int() [L339] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L96] COND TRUE waterLevel < 2 [L97] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L347] tmp___0 = __VERIFIER_nondet_int() [L349] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L108] COND FALSE !(\read(methaneLevelCritical)) [L111] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L357] tmp___2 = __VERIFIER_nondet_int() [L359] COND TRUE \read(tmp___2) [L597] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L404] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L411] COND TRUE \read(systemActive) [L459] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L462] COND FALSE !(\read(pumpRunning)) [L433] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L436] COND TRUE ! pumpRunning [L556] int retValue_acc ; [L557] int tmp ; [L558] int tmp___0 ; [L158] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L161] COND FALSE !(waterLevel < 2) [L165] retValue_acc = 0 [L166] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L562] tmp = isHighWaterSensorDry() [L564] COND FALSE !(\read(tmp)) [L567] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L569] retValue_acc = tmp___0 [L570] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L438] tmp = isHighWaterLevel() [L440] COND TRUE \read(tmp) [L487] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L46] int tmp ; [L47] int tmp___0 ; [L117] int retValue_acc ; [L120] retValue_acc = methaneLevelCritical [L121] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L51] tmp = isMethaneLevelCritical() [L53] COND TRUE \read(tmp) [L511] int retValue_acc ; [L514] retValue_acc = pumpRunning [L515] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L55] tmp___0 = isPumpRunning() [L57] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L390] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 117 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 826 SDtfs, 1232 SDslu, 1058 SDs, 0 SdLazy, 146 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 561 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 11751 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...