./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.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_4528db58-acba-48e2-a55a-e3a4f541fdc9/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/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_4528db58-acba-48e2-a55a-e3a4f541fdc9/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/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_4528db58-acba-48e2-a55a-e3a4f541fdc9/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 9f716f844e272d3040100c1f49345c7fdf02d773 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:30:58,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:30:58,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:30:58,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:30:58,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:30:58,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:30:58,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:30:58,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:30:58,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:30:58,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:30:58,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:30:58,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:30:58,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:30:58,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:30:58,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:30:58,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:30:58,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:30:58,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:30:58,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:30:58,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:30:58,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:30:58,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:30:58,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:30:58,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:30:58,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:30:58,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:30:58,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:30:58,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:30:58,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:30:58,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:30:58,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:30:58,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:30:58,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:30:58,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:30:58,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:30:58,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:30:58,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:30:58,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:30:58,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:30:58,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:30:58,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:30:58,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:30:58,808 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:30:58,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:30:58,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:30:58,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:30:58,810 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:30:58,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:30:58,811 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:30:58,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:30:58,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:30:58,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:30:58,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:30:58,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:30:58,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:30:58,813 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:30:58,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:30:58,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:30:58,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:30:58,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:30:58,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:30:58,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:30:58,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:30:58,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:30:58,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:30:58,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:30:58,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:30:58,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:30:58,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:30:58,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:30:58,817 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_4528db58-acba-48e2-a55a-e3a4f541fdc9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f716f844e272d3040100c1f49345c7fdf02d773 [2021-10-11 00:30:59,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:30:59,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:30:59,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:30:59,150 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:30:59,155 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:30:59,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2021-10-11 00:30:59,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/bin/uautomizer-Z5i5R5N3CC/data/4e8e89658/980af6216c714ebc8f75d599950b12db/FLAGe045a3dce [2021-10-11 00:30:59,779 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:30:59,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2021-10-11 00:30:59,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/bin/uautomizer-Z5i5R5N3CC/data/4e8e89658/980af6216c714ebc8f75d599950b12db/FLAGe045a3dce [2021-10-11 00:31:00,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/bin/uautomizer-Z5i5R5N3CC/data/4e8e89658/980af6216c714ebc8f75d599950b12db [2021-10-11 00:31:00,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:31:00,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:31:00,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:31:00,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:31:00,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:31:00,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:31:00" (1/1) ... [2021-10-11 00:31:00,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498cecd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00, skipping insertion in model container [2021-10-11 00:31:00,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:31:00" (1/1) ... [2021-10-11 00:31:00,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:31:00,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:31:00,466 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_4528db58-acba-48e2-a55a-e3a4f541fdc9/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[16936,16949] [2021-10-11 00:31:00,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:31:00,482 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:31:00,554 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_4528db58-acba-48e2-a55a-e3a4f541fdc9/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[16936,16949] [2021-10-11 00:31:00,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:31:00,605 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:31:00,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00 WrapperNode [2021-10-11 00:31:00,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:31:00,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:31:00,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:31:00,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:31:00,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00" (1/1) ... [2021-10-11 00:31:00,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00" (1/1) ... [2021-10-11 00:31:00,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:31:00,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:31:00,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:31:00,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:31:00,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00" (1/1) ... [2021-10-11 00:31:00,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00" (1/1) ... [2021-10-11 00:31:00,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00" (1/1) ... [2021-10-11 00:31:00,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00" (1/1) ... [2021-10-11 00:31:00,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00" (1/1) ... [2021-10-11 00:31:00,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00" (1/1) ... [2021-10-11 00:31:00,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00" (1/1) ... [2021-10-11 00:31:00,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:31:00,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:31:00,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:31:00,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:31:00,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/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 00:31:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:31:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:31:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:31:00,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:31:01,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:31:01,715 INFO L299 CfgBuilder]: Removed 96 assume(true) statements. [2021-10-11 00:31:01,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:01 BoogieIcfgContainer [2021-10-11 00:31:01,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:31:01,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:31:01,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:31:01,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:31:01,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:31:00" (1/3) ... [2021-10-11 00:31:01,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32aa78d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:31:01, skipping insertion in model container [2021-10-11 00:31:01,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:31:00" (2/3) ... [2021-10-11 00:31:01,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32aa78d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:31:01, skipping insertion in model container [2021-10-11 00:31:01,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:01" (3/3) ... [2021-10-11 00:31:01,731 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2021-10-11 00:31:01,751 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:31:01,755 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 00:31:01,768 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 00:31:01,811 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:31:01,812 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:31:01,812 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:31:01,812 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:31:01,812 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:31:01,812 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:31:01,812 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:31:01,812 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:31:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2021-10-11 00:31:01,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 00:31:01,838 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:01,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:31:01,840 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:01,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:01,846 INFO L82 PathProgramCache]: Analyzing trace with hash 768274677, now seen corresponding path program 1 times [2021-10-11 00:31:01,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:01,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715282931] [2021-10-11 00:31:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:02,192 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 00:31:02,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715282931] [2021-10-11 00:31:02,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:02,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:02,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356692776] [2021-10-11 00:31:02,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:31:02,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:02,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:31:02,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:31:02,216 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2021-10-11 00:31:02,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:02,245 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2021-10-11 00:31:02,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:31:02,247 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2021-10-11 00:31:02,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:02,259 INFO L225 Difference]: With dead ends: 150 [2021-10-11 00:31:02,259 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 00:31:02,263 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 00:31:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 00:31:02,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-11 00:31:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-10-11 00:31:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2021-10-11 00:31:02,326 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2021-10-11 00:31:02,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:02,327 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2021-10-11 00:31:02,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:31:02,328 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2021-10-11 00:31:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:31:02,329 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:02,330 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 00:31:02,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:31:02,330 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:02,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:02,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1484097871, now seen corresponding path program 1 times [2021-10-11 00:31:02,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:02,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4530420] [2021-10-11 00:31:02,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:02,515 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 00:31:02,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4530420] [2021-10-11 00:31:02,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:02,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:31:02,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011404661] [2021-10-11 00:31:02,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:31:02,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:02,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:31:02,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:02,521 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2021-10-11 00:31:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:02,542 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2021-10-11 00:31:02,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:31:02,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2021-10-11 00:31:02,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:02,545 INFO L225 Difference]: With dead ends: 74 [2021-10-11 00:31:02,547 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 00:31:02,548 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 00:31:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 00:31:02,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 00:31:02,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 00:31:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2021-10-11 00:31:02,557 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2021-10-11 00:31:02,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:02,557 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2021-10-11 00:31:02,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:31:02,558 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2021-10-11 00:31:02,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-11 00:31:02,561 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:02,562 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 00:31:02,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:31:02,563 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:02,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:02,564 INFO L82 PathProgramCache]: Analyzing trace with hash 670124178, now seen corresponding path program 1 times [2021-10-11 00:31:02,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:02,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707413930] [2021-10-11 00:31:02,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:02,724 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 00:31:02,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707413930] [2021-10-11 00:31:02,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:02,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:31:02,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247092623] [2021-10-11 00:31:02,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:31:02,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:02,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:31:02,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:31:02,727 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 6 states. [2021-10-11 00:31:02,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:02,939 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2021-10-11 00:31:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:31:02,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2021-10-11 00:31:02,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:02,945 INFO L225 Difference]: With dead ends: 62 [2021-10-11 00:31:02,946 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 00:31:02,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:31:02,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 00:31:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 00:31:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 00:31:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2021-10-11 00:31:02,952 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2021-10-11 00:31:02,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:02,953 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2021-10-11 00:31:02,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:31:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2021-10-11 00:31:02,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-11 00:31:02,954 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:02,954 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 00:31:02,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:31:02,954 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:02,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:02,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1804645939, now seen corresponding path program 1 times [2021-10-11 00:31:02,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:02,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169131583] [2021-10-11 00:31:02,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:03,071 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 00:31:03,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169131583] [2021-10-11 00:31:03,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:03,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:31:03,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599520766] [2021-10-11 00:31:03,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:31:03,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:03,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:31:03,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:31:03,079 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2021-10-11 00:31:03,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:03,137 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2021-10-11 00:31:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:31:03,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-10-11 00:31:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:03,139 INFO L225 Difference]: With dead ends: 83 [2021-10-11 00:31:03,141 INFO L226 Difference]: Without dead ends: 55 [2021-10-11 00:31:03,142 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 00:31:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-11 00:31:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-10-11 00:31:03,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 00:31:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2021-10-11 00:31:03,160 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2021-10-11 00:31:03,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:03,160 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2021-10-11 00:31:03,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:31:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2021-10-11 00:31:03,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-11 00:31:03,163 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:03,163 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] [2021-10-11 00:31:03,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:31:03,164 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:03,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:03,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1746371458, now seen corresponding path program 1 times [2021-10-11 00:31:03,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:03,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061319582] [2021-10-11 00:31:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:03,297 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 00:31:03,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061319582] [2021-10-11 00:31:03,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:03,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:31:03,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16467318] [2021-10-11 00:31:03,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:31:03,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:03,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:31:03,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:31:03,302 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2021-10-11 00:31:03,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:03,383 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2021-10-11 00:31:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:31:03,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-10-11 00:31:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:03,389 INFO L225 Difference]: With dead ends: 139 [2021-10-11 00:31:03,390 INFO L226 Difference]: Without dead ends: 92 [2021-10-11 00:31:03,391 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 00:31:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-11 00:31:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2021-10-11 00:31:03,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 00:31:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2021-10-11 00:31:03,418 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2021-10-11 00:31:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:03,419 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2021-10-11 00:31:03,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:31:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2021-10-11 00:31:03,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-11 00:31:03,421 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:03,421 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] [2021-10-11 00:31:03,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:31:03,421 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:03,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:03,422 INFO L82 PathProgramCache]: Analyzing trace with hash 916139585, now seen corresponding path program 1 times [2021-10-11 00:31:03,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:03,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130843932] [2021-10-11 00:31:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:03,579 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 00:31:03,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130843932] [2021-10-11 00:31:03,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:03,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-11 00:31:03,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86611100] [2021-10-11 00:31:03,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:31:03,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:03,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:31:03,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:31:03,592 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 8 states. [2021-10-11 00:31:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:04,065 INFO L93 Difference]: Finished difference Result 347 states and 497 transitions. [2021-10-11 00:31:04,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 00:31:04,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2021-10-11 00:31:04,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:04,069 INFO L225 Difference]: With dead ends: 347 [2021-10-11 00:31:04,070 INFO L226 Difference]: Without dead ends: 297 [2021-10-11 00:31:04,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-10-11 00:31:04,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-10-11 00:31:04,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 140. [2021-10-11 00:31:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-10-11 00:31:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2021-10-11 00:31:04,120 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 29 [2021-10-11 00:31:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:04,121 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2021-10-11 00:31:04,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:31:04,121 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2021-10-11 00:31:04,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-11 00:31:04,127 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:04,127 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] [2021-10-11 00:31:04,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:31:04,128 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:04,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:04,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1650264504, now seen corresponding path program 1 times [2021-10-11 00:31:04,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:04,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742835333] [2021-10-11 00:31:04,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:04,186 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 00:31:04,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742835333] [2021-10-11 00:31:04,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:31:04,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:31:04,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865271609] [2021-10-11 00:31:04,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:31:04,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:04,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:31:04,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:31:04,189 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand 4 states. [2021-10-11 00:31:04,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:04,221 INFO L93 Difference]: Finished difference Result 299 states and 406 transitions. [2021-10-11 00:31:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:31:04,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2021-10-11 00:31:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:04,223 INFO L225 Difference]: With dead ends: 299 [2021-10-11 00:31:04,223 INFO L226 Difference]: Without dead ends: 165 [2021-10-11 00:31:04,224 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 00:31:04,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-11 00:31:04,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 120. [2021-10-11 00:31:04,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2021-10-11 00:31:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 160 transitions. [2021-10-11 00:31:04,256 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 160 transitions. Word has length 44 [2021-10-11 00:31:04,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:04,258 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 160 transitions. [2021-10-11 00:31:04,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:31:04,259 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 160 transitions. [2021-10-11 00:31:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-11 00:31:04,266 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:04,267 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] [2021-10-11 00:31:04,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 00:31:04,267 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:04,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:04,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1693810360, now seen corresponding path program 1 times [2021-10-11 00:31:04,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:04,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313413670] [2021-10-11 00:31:04,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:04,387 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 00:31:04,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313413670] [2021-10-11 00:31:04,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682653679] [2021-10-11 00:31:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/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 00:31:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:31:04,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 00:31:04,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:31:04,739 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 00:31:04,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 00:31:04,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-10-11 00:31:04,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80908118] [2021-10-11 00:31:04,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:31:04,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:31:04,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:31:04,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:31:04,742 INFO L87 Difference]: Start difference. First operand 120 states and 160 transitions. Second operand 8 states. [2021-10-11 00:31:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:31:05,042 INFO L93 Difference]: Finished difference Result 412 states and 570 transitions. [2021-10-11 00:31:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-11 00:31:05,042 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2021-10-11 00:31:05,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:31:05,045 INFO L225 Difference]: With dead ends: 412 [2021-10-11 00:31:05,045 INFO L226 Difference]: Without dead ends: 321 [2021-10-11 00:31:05,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-11 00:31:05,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-10-11 00:31:05,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 159. [2021-10-11 00:31:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2021-10-11 00:31:05,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 211 transitions. [2021-10-11 00:31:05,064 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 211 transitions. Word has length 45 [2021-10-11 00:31:05,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:31:05,065 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 211 transitions. [2021-10-11 00:31:05,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:31:05,065 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 211 transitions. [2021-10-11 00:31:05,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-11 00:31:05,066 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:31:05,066 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] [2021-10-11 00:31:05,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-11 00:31:05,283 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:31:05,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:31:05,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1880584764, now seen corresponding path program 2 times [2021-10-11 00:31:05,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:31:05,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671157381] [2021-10-11 00:31:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:31:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:05,358 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:31:05,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:31:05,482 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:31:05,482 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:31:05,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 00:31:05,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:31:05 BoogieIcfgContainer [2021-10-11 00:31:05,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:31:05,651 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:31:05,651 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:31:05,652 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:31:05,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:31:01" (3/4) ... [2021-10-11 00:31:05,654 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:31:05,837 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4528db58-acba-48e2-a55a-e3a4f541fdc9/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:31:05,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:31:05,839 INFO L168 Benchmark]: Toolchain (without parser) took 5756.57 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 80.5 MB in the beginning and 109.4 MB in the end (delta: -28.9 MB). Peak memory consumption was 72.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:05,840 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 86.0 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 21.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:31:05,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.34 ms. Allocated memory is still 115.3 MB. Free memory was 80.5 MB in the beginning and 82.4 MB in the end (delta: -2.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:05,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.22 ms. Allocated memory is still 115.3 MB. Free memory was 82.4 MB in the beginning and 79.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:05,842 INFO L168 Benchmark]: Boogie Preprocessor took 63.83 ms. Allocated memory is still 115.3 MB. Free memory was 79.5 MB in the beginning and 76.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:05,842 INFO L168 Benchmark]: RCFGBuilder took 951.67 ms. Allocated memory is still 115.3 MB. Free memory was 76.9 MB in the beginning and 77.2 MB in the end (delta: -352.3 kB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:05,843 INFO L168 Benchmark]: TraceAbstraction took 3928.80 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 77.2 MB in the beginning and 56.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:05,843 INFO L168 Benchmark]: Witness Printer took 186.48 ms. Allocated memory is still 142.6 MB. Free memory was 56.0 MB in the beginning and 109.4 MB in the end (delta: -53.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:31:05,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 86.0 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 21.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 522.34 ms. Allocated memory is still 115.3 MB. Free memory was 80.5 MB in the beginning and 82.4 MB in the end (delta: -2.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.22 ms. Allocated memory is still 115.3 MB. Free memory was 82.4 MB in the beginning and 79.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.83 ms. Allocated memory is still 115.3 MB. Free memory was 79.5 MB in the beginning and 76.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 951.67 ms. Allocated memory is still 115.3 MB. Free memory was 76.9 MB in the beginning and 77.2 MB in the end (delta: -352.3 kB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3928.80 ms. Allocated memory was 115.3 MB in the beginning and 142.6 MB in the end (delta: 27.3 MB). Free memory was 77.2 MB in the beginning and 56.0 MB in the end (delta: 21.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 16.1 GB. * Witness Printer took 186.48 ms. Allocated memory is still 142.6 MB. Free memory was 56.0 MB in the beginning and 109.4 MB in the end (delta: -53.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 871]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L408] int cleanupTimeShifts = 4; [L617] int waterLevel = 1; [L618] int methaneLevelCritical = 0; [L714] int pumpRunning = 0; [L715] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L489] int retValue_acc ; [L490] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] int retValue_acc ; [L541] retValue_acc = 1 [L542] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L496] tmp = valid_product() [L498] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L635] COND TRUE waterLevel < 2 [L636] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L722] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L754] COND TRUE ! pumpRunning [L848] int retValue_acc ; [L849] int tmp ; [L850] int tmp___0 ; [L697] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L700] COND FALSE !(waterLevel < 2) [L704] retValue_acc = 0 [L705] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L854] tmp = isHighWaterSensorDry() [L856] COND FALSE !(\read(tmp)) [L859] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L861] retValue_acc = tmp___0 [L862] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L756] tmp = isHighWaterLevel() [L758] COND TRUE \read(tmp) [L779] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L882] tmp = getWaterLevel() [L884] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L565] tmp = __VERIFIER_nondet_int() [L567] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L722] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L623] COND TRUE waterLevel > 0 [L624] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L754] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L882] tmp = getWaterLevel() [L884] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L557] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L559] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L565] tmp = __VERIFIER_nondet_int() [L567] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L722] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L623] COND TRUE waterLevel > 0 [L624] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L729] COND TRUE \read(systemActive) [L751] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L754] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L877] int tmp ; [L878] int tmp___0 ; [L688] int retValue_acc ; [L691] retValue_acc = waterLevel [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L882] tmp = getWaterLevel() [L884] COND TRUE tmp == 0 [L803] int retValue_acc ; [L806] retValue_acc = pumpRunning [L807] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L886] tmp___0 = isPumpRunning() [L888] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L871] 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, 78 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 554 SDtfs, 877 SDslu, 1101 SDs, 0 SdLazy, 201 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred in iteration=8, 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, 8 MinimizatonAttempts, 402 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 330 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 16788 SizeOfPredicates, 3 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 36/42 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...